LTE RF Optimization Methods & Procedures

RF-E346

LTE FDD RF Optimization Methods & Procedures – Internal Version

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LTE FDD RF Optimization Methods & Procedures Internal Version V2.0 September 2, 2011

As the undersigned EDITOR I am responsible for keeping this document current, and conforms to the RF Document Template RF-Q001 Original Signature on File William Hsieh

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Date:

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Authors This part provides the names of the authors who wrote the respective sections (Some sections have been deleted). Section Number 1 2 3 4 5

Section Title

Author

Entrance Criteria Exit criteria Support Information Organization chart Optimization Strategy

6

Data collection kit configuration

7 8 9 10

Naming Convention How to set up and use LG Adrenalin UE Using IPerf and WINDS How to set up and use LLDM to collect drive test data How to set up and use NEMO to collect drive test data How to use JDSU E6474A-X to collect Drive Test Data How to use JDSU scanner How to use PcTel scanner How to set up and use Syncro Test Data Collection Procedure How to use eDAT How to detect problems and how to fix them How to use SAM to examine network status How to use SAM to change eNodeB parameters How to change OCNS How to examine system parameters and change neighbor list using WPS How to use SAM to collect call trace data How to use SAM to change the antenna electrical tilt Procedure to change antenna azimuth and mechanical tilt Plot scanner data to compare LTE signal strength vs. UMTS and GSM signal strength Additional Information

William Hsieh William Hsieh Sreenu Pamidi Sri Adimulam Alex Anokye Sri Adimulam (Design Engineer Role) Guillermo Alvarez (Kit configuration) Alex Anokye (PC configuration) Saad Al Adhami Guillermo Alvarez Alex Anokye Alex Anokye

11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27

Guillermo Alvarez Guillermo Alvarez Cliff Castillo Auillermo Alvarez Aderemi Adeyeye Aderremi Adeyeye Mateen Hussain Alex Anokye Sri Adimulam Sri Adimulam Cliff Castillo Vansotheavy Sem Sri Adimulam Sri Adimulam William Hsieh Vansotheavy Sem Sreenu Pamidi (Support Escalation Path), Alex Anokye (Server)

CHANGE RECORD This section provides a history of changes made to this document. 9/2/2011

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RF-E346

Date September,29, 2010 September 2, 2011

LTE FDD RF Optimization Methods & Procedures – Internal Version

Reason

Section Title Initial Release All sections

Revise the organization and the content of the whole document

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Issue # V1.0 V2.0

END OF CHANGES

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TABLE OF CONTENTS 1

Entrance Criteria........................................................................................................................................ 8

2

Exit Criteria................................................................................................................................................. 8

3

Support Information.................................................................................................................................. 8

4

Organization Chart..................................................................................................................................... 9

5

Optimization Strategy................................................................................................................................ 9 5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.8 5.9 5.10 5.11 5.12 5.13 5.14 5.15 5.16 5.16.1 5.16.2 5.17 5.17.1 5.17.2 5.17.3 5.17.4

6

Performance in a LTE system depends on many different critical elements..................................9 RF Optimization Objectives................................................................................................................. 9 RF Optimization Parameters................................................................................................................ 9 RF Loading Consideration................................................................................................................. 10 Optimization Deployment Team Structure........................................................................................ 11 LTE RF Optimization Trouble Shooting Support..............................................................................13 Customer Communications & Reporting.........................................................................................13 Pre-Launch Optimization Steps......................................................................................................... 13 Key Entrance Criteria (before Preparation / Pre Test phase)..........................................................14 Preparation / Pre-Drive....................................................................................................................... 14 Sector Testing / Stationary Tests....................................................................................................... 15 Cluster Tests....................................................................................................................................... 15 System Test......................................................................................................................................... 16 Final Report......................................................................................................................................... 16 Troubleshooting considerations for other elements of the LTE network......................................17 Antenna Down Tilt Adjustment.......................................................................................................... 19 Pilot pollution................................................................................................................................... 20 Overshooting Cell............................................................................................................................ 21 IRAT..................................................................................................................................................... 23 IRAT Test Preparation Procedure:................................................................................................... 23 IRAT Test Execution Procedure:...................................................................................................... 23 Measuring LTE->UMTS/eHRPD HO interruption time using WiReshark.........................................25 Idle LTE- eHRPD/UMTS Handover.................................................................................................. 25

Data Collection Kit Configuration........................................................................................................... 26 6.1 6.2

Kit Configuration................................................................................................................................ 26 PC Configuration................................................................................................................................ 26

7

Naming Convention................................................................................................................................. 27

8

How to set up and use LG Adrenalin UE................................................................................................27 8.1 8.2

9

LG Adrenaline Tips............................................................................................................................. 27 Useful AT Commands......................................................................................................................... 28 Using IPerf and WINDS............................................................................................................................ 28

9.1 9.2 10

IPerf...................................................................................................................................................... 28 WINDS.................................................................................................................................................. 30 How to set up and use LLDM to collect drive test data........................................................................36

10.1 10.1.1 10.1.2 10.1.3

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LLDM (LGE Logging Diagnostic Monitor) Introduction...................................................................36 What is LLDM?................................................................................................................................ 36 Components:................................................................................................................................... 36 Target Systems................................................................................................................................ 37

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10.2 Installation........................................................................................................................................... 37 10.2.1 Required H/W and S/W................................................................................................................... 37 10.2.2 Installing LLDM................................................................................................................................ 37 10.3 License Key activation....................................................................................................................... 40 10.3.1 Step 1.............................................................................................................................................. 41 10.3.2 Step 2.............................................................................................................................................. 41 10.3.3 Step 3.............................................................................................................................................. 41 10.4 Operation............................................................................................................................................. 42 10.4.1 Setup Menu..................................................................................................................................... 42 10.4.1.1 Set Com Port.............................................................................................................................. 42 10.4.1.2 Logging Mask............................................................................................................................. 44 10.4.2 Information Menu............................................................................................................................. 45 10.4.2.1 Logging Status........................................................................................................................... 46 10.4.3 Replay Menu................................................................................................................................... 47 10.4.3.1 Load Replay Menu..................................................................................................................... 47 1.1.1. Replay Toolbar................................................................................................................................. 48 10.4.4 Exit Menu......................................................................................................................................... 48 10.4.5 Tree View Menu............................................................................................................................... 48 10.4.6 Layer 1 Menu................................................................................................................................... 49 10.4.6.1 Wide- Band CQI Information...................................................................................................... 50 10.4.6.2 Serving Cell Quality Information................................................................................................. 51 10.4.7 Cell Information............................................................................................................................... 51 10.4.7.1 PDSCH PHY Throughput........................................................................................................... 51 10.4.7.2 PDSC H BLER (Block Error Rate)..............................................................................................52 10.4.7.3 PDCCH Detection Rate.............................................................................................................. 52 10.4.7.4 PUSCH PHY Throughput........................................................................................................... 52 10.4.7.5 LOGMASK.................................................................................................................................. 53 10.5 How to use LLDM................................................................................................................................ 55 11

How to set up and use NEMO to collect drive test data.......................................................................61

11.1 Getting Started.................................................................................................................................... 61 11.2 NEMO Outdoor.................................................................................................................................... 61 11.2.1 OPEN NEMO OUTDOOR............................................................................................................... 61 11.2.2 VERIFY YOUR SCRIPT SETTINGS...............................................................................................62 11.2.2.1 Check UE1 Settings (Iperf):........................................................................................................ 62 11.2.2.2 Check UE2 Settings (FTP)......................................................................................................... 63 11.2.2.3 Check UE3 Settings (Ping)......................................................................................................... 64 11.2.3 CONNECT YOUR SCANNERS....................................................................................................... 64 11.2.4 SCANNER(S) BECOME NON-RESPONSIVE................................................................................65 11.2.5 NEMO-OUTDOOR: WORK ON-LINE..............................................................................................66 11.2.6 NEMO OUTDOOR TIPS.................................................................................................................. 66 11.3 ADRENALINE & USB HUB PHYSICAL CONNECTIONS...................................................................74 11.4 TOOLS LAB ATT-LTE RF DRIVE TEST KIT CONFIGURATION.........................................................74 11.5 ADRENALINE RECOGNIZED BY LAPTOP........................................................................................75 11.6 HOW TO IDENTIFY COM PORT NUMBER ASSIGNMENTS..............................................................77 11.7 QUERY YOUR MODEM....................................................................................................................... 78 11.8 DRIVERS & SOFTWARE..................................................................................................................... 78 11.9 ADRENALINE UE SOFTWARE UPDATES......................................................................................... 78 11.10 LGE ADRENALINE TIPS..................................................................................................................... 79 12

How to use JDSU E6474A-X to collect Drive Test Data........................................................................79

13

How to use JDSU Scanner...................................................................................................................... 82

13.1 13.2 13.3 13.4 13.5 13.6 13.7 9/2/2011

Activate JDSU E6474A-X.................................................................................................................... 82 Creating a Project............................................................................................................................... 82 How to add a receiver based measurement.....................................................................................85 Creating a Measurement.................................................................................................................... 89 Creating a Workspace........................................................................................................................ 91 Probing the device (Connecting the device)....................................................................................98 Checking your settings.................................................................................................................... 100 Alcatel-Lucent – PROPRIETARY – Use pursuant to Company Instructions

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How to use PcTel Scanner.................................................................................................................... 109 Frequency Scanning - PCTEL GSM/UMTS Scanners....................................................................109 Frequency Scanning - PCTEL EX LTE Scanner..............................................................................111 Frequency Scanning - PCT GSM Scanner......................................................................................112 TOP-N Pilot Scanning PCTEL - UMTS............................................................................................. 114 LTE OFDM Scanning - PCTEL EX LTE............................................................................................. 116 How to set up and use Syncro Test...................................................................................................... 118

15.1 15.2 15.3 15.3.1 15.3.2 15.3.3 15.4 15.4.1 15.4.2 15.4.3 15.4.4 15.4.5 16

Establish Remote Control Connection........................................................................................... 119 Configure Adapters to Avoid Conflicts........................................................................................... 119 Configuring the Master Controller Control panel..........................................................................124 Testing Panel................................................................................................................................. 124 Log Data Panel.............................................................................................................................. 125 Snapshot View Panel..................................................................................................................... 126 Configuring Probe (LLDM, NEMO, etc.).......................................................................................... 127 LLDM Probe.................................................................................................................................. 127 Syncro Test LLDM Probe Options.................................................................................................128 Verify connectivity of Probe to the Master Controller.....................................................................129 Load Test Cases into the Master Controller...................................................................................132 Select the test to run on each UE.................................................................................................. 134

Data Collection Procedure.................................................................................................................... 136

16.1 16.2 16.3 16.4 17

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Opening a Project (eg. ATT LTE)..................................................................................................... 103 Collecting data.................................................................................................................................. 105 How to export a project and associated drive test data................................................................106

14.1 14.2 14.3 14.4 14.5 15

LTE FDD RF Optimization Methods & Procedures – Internal Version

LLDM Data Collection Software....................................................................................................... 136 Syncro Test....................................................................................................................................... 139 For Data Collector in the van:.......................................................................................................... 139 For Remote Control or Local Control.............................................................................................143 How to use eDAT.................................................................................................................................... 146

17.1 Download and Install eDAT.............................................................................................................. 147 17.2 Create a Project................................................................................................................................ 147 17.3 Open an existing Project.................................................................................................................. 147 17.4 Add Data to an Existing Project...................................................................................................... 147 17.5 Study: Examining and Aligning Data Files.....................................................................................147 17.6 Create Cell location files (LCAT)..................................................................................................... 149 17.7 Default Views of Metric and data..................................................................................................... 150 17.7.1 Un-binned data.............................................................................................................................. 151 17.7.2 Temporally binned data................................................................................................................. 151 17.7.3 Spatially binned data..................................................................................................................... 152 17.7.4 Scatter Plots.................................................................................................................................. 152 17.7.5 Histogram...................................................................................................................................... 152 17.7.6 Grid................................................................................................................................................ 153 17.7.7 Maps.............................................................................................................................................. 153 17.7.7.1 Show eNodeB sites.................................................................................................................. 154 17.7.7.2 Zoom in and Zoom out............................................................................................................. 154 17.8 Change Appearances....................................................................................................................... 154 17.8.1 Fixing Legend window................................................................................................................... 154 17.8.2 Changing bin size.......................................................................................................................... 154 17.8.3 Displaying labels............................................................................................................................ 154 17.8.4 Changing Themes......................................................................................................................... 155 17.9 Multi-Metric Map View...................................................................................................................... 157 17.9.1 View several metrics in the same map – View Synchronization....................................................157 17.9.2 Multi-Metrics Grid View.................................................................................................................. 158 17.9.3 View Map and Grid........................................................................................................................ 159 17.10 Filters................................................................................................................................................. 160 17.10.1 Excluding data not meeting RSRP or SNR thresholds..................................................................160 17.10.2 Filtering with other criteria.............................................................................................................. 161 9/2/2011

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17.11 Messages (Message Explorer)......................................................................................................... 162 17.11.1 Text Search.................................................................................................................................... 162 17.11.2 Message Groups........................................................................................................................... 163 17.12 Reporting........................................................................................................................................... 165 18

How to detect problems and how to fix them......................................................................................167

18.1 18.2 18.3 18.4 18.5 18.6 18.7 18.8 18.9 18.10

Maximize distance between co-PCI cells........................................................................................ 167 Eliminate Co-PCI neighbors............................................................................................................. 168 Neighbor Reciprocity....................................................................................................................... 169 Missing Neighbor.............................................................................................................................. 170 Drop call Scenario – No Handover Command Received...............................................................171 Drop call Scenario – missing Neighbor contributed to 4 repeated drop calls............................173 RACH ISSUE...................................................................................................................................... 173 Identifying Pilot Polluted Areas....................................................................................................... 174 Call drop scenarios in the Handover regions.................................................................................177 Handover Parameters and Recommended Settings......................................................................180

19

How to use SAM to examine network status.......................................................................................188

20

How to use SAM to change eNodeB parameters................................................................................191

21

How to change OCNS............................................................................................................................ 194

22

How to examine system parameters and change neighbor list using WPS.....................................206

23

How to use SAM to collect call trace data...........................................................................................207

24

How to use SAM to change the antenna electrical tilt........................................................................210

25

Procedure to change antenna azimuth and mechanical tilt...............................................................214

26

Plot scanner data to compare LTE signal strength vs. UMTS and GSM signal strength.................215

27

Additional Information........................................................................................................................... 215

27.1 27.2 27.3

Support Escalation Path.................................................................................................................. 215 Filzella................................................................................................................................................ 219 DOS FTP............................................................................................................................................ 221

28

Reference............................................................................................................................................... 221

29

Acronyms............................................................................................................................................... 222

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1 Entrance Criteria The Statement Of Work (SOW) should specify the condition of the network before the RF team starts the optimization. The status of the network criteria should be delivered to the RF Lead 1 week before the commencement of the RF optimization. The RF Lead should review the status. If they meet the criteria stated in the SOW, the RF Lead will direct the team to go ahead with the optimization. The criteria usually listed in the SOWs are:  Providing the RSRP map and SINR map (by customer if customer performs the design, by the ALU design team if it performs the design).  Providing eNodeB site locations (Lat / Lon and physical address), antenna azimuths, tilts, cell ids, and neighbor lists by customer if customer performs the design, by the ALU design team if it performs the design)  Providing all the eNodeB attributes, preferably in an Excel format (by the integration team)  Providing the configured Neighbor Lists, preferably in an Excel format (by the integration team)  Specify the agreed upon condition of the test environment like minimum RSRP, SINR, and backhaul available throughput (usually listed in the SOW).  Having completed all the functional tests and site integration activities for all targeted eNodeBs and untargeted eNodeBs located out to the 2nd tier.  Being free of critical and major alarms for 48 hours  Passing all Acceptance Test Procedures. A copy of the Integration Report is show in the document below:

Integration Report.doc

    

Having full end-to-end connectivity with the EPC (S1-SGW, S1-MME.) Having successfully originated and terminated calls on every sector Having transmitted the proper Cell ID from each sector Having successfully handovered calls between sectors of the same eNodeB Having cleared the spectrum in the planned optimization region. Any unresolved external interference sources shall be documented and identified as part of the Excluded Area.  Stationary throughput test having passed the agreed upon percentage of eNodeBs in a cluster. Additional Network Readiness items beyond site integration include:  Full X2 connectivity to all neighbor candidates via X2-MME  Neighbor list established and active 2 Exit Criteria Exit criteria are defined in SOW. They typically include:  Up Link Throughput  Down Link Throughput  Radio Resource Control (RRC) Failure Rate  Radio Resource Control (RRC) Drop Rate The exit KPI measurement environments and conditions and Exit Criteria should be clearly defined and signed by ALU and the customer to avoid cost and time overrun due to misunderstandings. 3

Support Information

Toolkit, NEMO, LLDM, JDSU, IPerf: Contact numbers in: http://usnavsgtk01.ndc.lucent.com/rftoolslab/Contacts.aspx

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eDAT, Syncro Test, WINDS, SPO, ROVA: URL: http://navigator.web.alcatel-lucent.com/ Tel: 908-743-4599 e-mail: [email protected] eNodeB and Core Network related: To be provided by Directors of the customer team. Customer Contacts: To be provided by Directors of the customer team. 4 Organization Chart To be provided by the Director of the Optimization Team. 5

Optimization Strategy

5.1          

Performance in a LTE system depends on many different critical elements RF link eNodeB SGW/PGW Backhaul MME Routers Core Network Backbone Test Server (FTP/UDP) Test Client UE (User Equipment)

Proper optimization of each element is important to attain good end-user experience and system performance. Lessons learned from prior deployments and from a technology trial will help refine RF optimization procedures 5.2

RF Optimization Objectives  The goal of RF optimization is to optimize user experience and system performance in a defined coverage area by fine-tuning all aspects of air-interface elements.  System performance consists of: o High data rates o Low latency o Good call setup rate o Low Drop call rate 

 5.3

Performance is measured through a series of stationary and drive tests after a cluster of cells is integrated and on the air o Measurement with test UE o Use of test Application (e.g. FTP, UDP, Ping) Performance is optimized by fine tuning key RF parameters on a cluster of cells RF Optimization Parameters

  

There are a lot of performance impacting parameters available In order to deploy a network in a timely manner, it is critical to identify and categorize key RF parameters Categorizing the parameters according to their importance, scope and frequency of adjustments

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Primary Parameters – Most often used for coarse coverage adjustment to ensure cluster and system wide acceptable performance Secondary Parameters – Fine tune performance in localized problem areas Fixed Parameters – Algorithmic parameters  Often require careful study including simulations and lab evaluation  Typically should not be customized to fix local problems – the parameter values are set for an operator’s whole system  Many important recommendations are derived from technology trials  Field evaluation of commercial network will fine tune recommendations in the future



Cell site coverage parameters o Antenna Adjustments  Antenna down tilt (mechanical and electrical), azimuth, beam width attributes  Maximize coverage while controlling interference and overshoots to neighboring cells  Antenna adjustments impact footprint of both links equally  For overlaid systems, many operators use shared antennas for two or more technologies. Because adjusting the antenna for one technology will impact the coverage of another technology, this is usually not a viable option. Moreover, share antennas usually have lower gain compared to single used antennas.



eNodeB Power o Can be conveniently adjusted with the Reference Signal power (dBm/RE) configuration.  Power level for all other channels (i.e. PDCCH, PDSCH, Primary and Secondary Sync, PCFICH, PHICH) are provisioned relative to Reference Signal level  Note, however, this is not a preferred approach for adjusting cell coverage for several reasons o Generally prefer antenna adjustments over cell site power when adjusting coverage in order to maintain Uplink/Downlink balance Handover parameters o Hard Handovers in LTE o UE uses Hysteresis threshold and Time-To-Trigger to request Handover in connected state  Trade off between call drags and frequent data interruption (ping-ponging) o Similar set of parameters in idle mode  Hysteresis, Reselection timer, Min RSRP level for the candidate cell, RSRP level at the serving cell below which UE initiates intra frequency idle HO search

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5.4

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Fixed Parameters o Several algorithmic parameters available in the deployment system o Below is a list of functional areas/algorithms containing Fixed Parameters  Overhead and Traffic power settings  DL/UL scheduler settings  MCS translation table  CQI to SINR mapping table  Power Control parameters  RACH parameters  HARQ parameters  MIMO parameters  Call admission  Inter-Cell Interference coordination  RRH tx/rx propagation delays

RF Loading Consideration  DownLink o OCNS may be used to simulate other cell loading

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 Specified number of REs can be keyed up to generate RF interference from surrounding cells Actual user gets higher priority  As test UE moves around, actual user data packets will substitute OCNS RE on the serving sector Sufficient to simulate other cell loading, no need to generate Resource contention within the test cell  Single user will be assigned most of the available traffic REs  Per user throughput will simply scale down in proportion if additional users are added or simulated on the serving sector (proportional fair scheduler)

Uplink o IoT can be used on the UL to simulate the effect of interference from users of surrounding sectors and of the serving sector. Mutual agreement with customer on OCNS and IoT settings for testing

Before the start of the optimization, team structure should be in place and each person’s roles and responsibilities should be communicated to the entire team. 5.5

Optimization Deployment Team Structure RF Director Technical Lead

Troubleshooting Team

RF Cluster Lead

Data Factory

SME

SAM Engineer

CTA/PLM

Figure 1 Optimization Deployment Team Structure 

RF Director o Provide leadership and direction throughout the staff planning and the project delivery o Ensure successful delivery, including managing of changes, up scopes, and profitability for the project o Manage customer relationship o Accountable to the customer and ALU for delivering the project in accordance with the contract



RF Technical Lead o Principle technical Interface to customer o Maintains master schedule and tracks progress o Defines Process and tools for test tracking o Runs Project Meetings  Weekly Status  Daily execution o Works with R&D and PLM to close Deployment gaps o Project reporting o Tracks critical deliverables  HW, SW, UEs, tools etc...



Subject Matter Expert (SME) o Works closely with field and R&D to identify, isolate and resolve issues  Takes ownership of issues so lab teams and field teams can continue to progress o Interfaces with R&D and UE manufacturer to prioritize, track and resolve issues  Communicates status and fixes to the rest of the team

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Provides LTE technical troubleshooting support Provides assistance to RF Lead and Cluster Engineer in solving real-time problems Provides support to RF lead in explaining any technical issue that comes from the customer Provides training for new RF engineers and contractors Work very closely with Troubleshooting team in Resolving RF issues Provide data analysis and presentation



Service Aware Manager (SAM) Engineer o Monitors and Verifies Cell status on daily basis  Ensure that network elements are active prior to drive testing o Verifies RF configuration settings using WPS o Makes changes to RF configuration at the request of RF Cluster Engineer o Executes all Work orders using SAM o Runs OCNS for RF Loading o Tracks all Physical antenna changes, uses SAM to remotely control electrical tilts o Uses WPS to make all parameter changes o Executes all WTA traces, (eNodeB and MME, SAM, XMS traces) o Point of Contact for all eNodeB issues to DSC team for Resolution o Places well compressed data files of various size (1GB, 200MB, 100MB) on the test server o Obtains cell sites attributes (lat, lon, heights, azimuth, BW) and pass them on to the Cluster Engineers

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Data Factory o Responsible for processing Cluster Drive data upon request from Market

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RF Cluster Engineer Lead o Provides support to cluster test drive team during testing o Analyses Data and creates Presentations o Works with customer to make sure all physical antenna changes recommended by RF cluster engineers are scheduled and implemented o Test planning  Definition of test cases and procedures  Analyses in support of test plan  Interface with R&D on product needs  Specifies new tools needed and defines required enhancement of existing tools. o Manages weekly and daily optimization goals, coordinates drive routes and organizes cluster test plan

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CTA/PLM o Provides information on eNode B integration status and schedule o Provides help in resolving all eNode B issues o Provides escalation path of all issues that are RF dependent o Can be used as path of escalation to customer issues such as transport issues, defective antenna/cable issues, transport/backhaul o Assists in getting access to customer sites for site visits

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Logistics Coordinator/Drive Test Coordinator o Integrate Drive Test equipment  Ensures the team uses calibrated test UE with up to date firmware  Properly configures client laptop, GPS equipment, LLDM, NEMO software versions o Field equipment readiness o Field preparation o Verifies procedures, tools etc o Keeps track of all equipment that is necessary for RF Optimization o Labels and assigns all equipment under the direction of the RF Lead o Guides the activities every day during the cluster test

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Office Assistant - optional o Provides support to the RF Lead and entire RF Team o Manages office environment  Makes sure printers are set up in the office  Keeps inventory of all equipment that will be shipped to the office  Keeps track of Third party contractor time sheet  Helps process RF data for RF cluster engineers  Makes sure sample plots are displayed on the walls of War Rooms  Tracks all integrated cell sites and the pending sites  Keeps record of all rented vans and other misc stuff that would be purchased locally.



Drive Teams o Each drive team includes 1 data collector and 1 driver. The drive team performs the tests and collects data.

5.6

LTE RF Optimization Trouble Shooting Support

Figure 2 Trouble Shooting Support

5.7    

Customer Communications & Reporting Status Reports providing one consistent view of the RF optimization progress to the customer are strongly recommended The reports should be created once a week or as negotiated with the customer To strengthen communication links, ALU RF engineers should co-locate with customer RF engineers while still keeping in a private area Ongoing communication with the customer is strongly recommended

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5.8 Pre-Launch Optimization Steps RF Optimization process consists of a series of phases and tests  Preparation and Pre-Drive  Single user stationary good RF test and Sector Tests  Cluster Optimization Test  System Tests Below are some basic pre-optimization Check Lists

1 2 3 4 5 6 7 8

9 10 5.9

Obtain a copy of the RNP 9955 export that shows sites list, cell configuration: antenna heights, Azimuth, and tilts, PCI, Neighbor List Get a WPS export to verify RNP data is captured correctly during provisioning ( this can possibly be done using RNP2PMCtool) Obtain a copy of RF design CID report and view coverage prediction Obtain MAPinfo files for Cluster & Supercluster Polygons (from Design Team) Obtain Cluster Drive Route (Mutually agreed to by AT&T and Optimization Team) & Supercluster Drive Routes (from AT&T) Export sites configuration & polygons onto Google Earth and view morphology of the Cluster Obtain copies of antenna tilt settings screen-capture from installation team & verify against design baseline When sites come on air, review RITC integration report and check (1)Tx Power, (2) RTWP values, and (3) that call test were made Before starting any site test check for any eNodeB alarms either directly through accessing SAM or from Operations. Please ensure that (1) the site is declared QOS ready for optimization by AT&T and (2) eNodeB must be in the "reserved for operator use" state. Assess alarm impact & plan testing accordingly

Key Entrance Criteria (before Preparation / Pre Test phase)  Cluster Cells have been integrated  Cluster Cells are transmitting and call through testing completed to verify basic connectivity  Cluster a contiguous area served by 15-20 eNodeBs.

Figure 3 Key Entrance Criteria

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5.10 Preparation / Pre-Drive Prepare the cluster before initiating RF optimization tests. The more exhaustive the pre-checks, the fewer obstacles and delays will be encountered during RF optimization. Steps include:  Spectrum Clearance o Usually conducted by the operator o Best to isolate external interferers prior to cell integration – it is a time consuming process 

Drive Route Selection o Mutually selected drive route for optimization and cluster testing o Typically 6-8 hours long drive route per cluster of 15 -20 cells o Mix of major highways, primary and secondary routes through varying terrain o Identify stationary locations and Sector test routes close to the test cells

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Underlay System Baseline o Good idea to obtain coverage and RF performance maps for the underlying system to pre-identify trouble RF spots

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Neighbor List Planning o Careful planning goes a long way in minimizing Handover failures and throughput impact from call drags due to NL omissions o Underlay system configuration can be utilized to expedite NL planning and minimize omissions

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Verify Configuration Settings o Configure parameter settings in the system in accordance with ALU recommendations and mutually agreed to golden set parameters”.



Obtain cell site attributes o Location, cell identity, antenna attributes to help with drive test data analysis

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Validate various network elements that are active prior to drive testing o Hardware Audits o Alarms and Fault management – Timing issues, etc o Network integrity – ping each IP network component in the system to verify inter-connectivity



Integrate Drive Test equipment o Ensure use of calibrated test UE with up to date firmware, properly configured client laptop and test server, GPS equipment, LLDM, NEMO software versions o Interconnect drive test kit components, integrate in the test van o Place well compressed data files on the test server fro FTP downloads o Collect sample drive test logs / cell traces with FTP download and run through post processing tools to validate compatibility

5.11 Sector Testing / Stationary Tests  Stationary Tests o Goal to obtain best achievable data rates/low latency close to the cell in good RF o Single user on the test sector, no users anywhere else o Verifies that non RF components are fully optimized  Minimal packet drops on the backhaul, no issues with test UE/data logging, low latency to the test server, etc  Difficult to isolate such problem elements using drive tests where RF conditions have more dominant impact on the performance o Typically, a small number of sectors are sampled during commercial deployment but since this is new technology it may be advisable to conduct the test on all sectors one by one o FTP downloads, uploads and ping tests 

Sector Testing

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Drive around 3 sectors close to a cell to ensure each sector is transmitting in the desired direction To verify that PCIs are implemented correctly as per RF Design Essentially validate proper cell identity, antenna orientation and antenna cabling for each sector

5.12 Cluster Tests  Collect a comprehensive set of RF performance statistics by drive testing on the pre-defined Cluster drive routes o Essential coverage drives with the test UE o Iterative drive testing, after each set of parameter adjustments 

Goal to improve performance to meet acceptance and exit criteria levels o Isolate problem areas in terms of low throughputs and call drops o Identify root cause through inspection of drive test logs and system traces o Categorize root cause in terms of  Low signal strength  Excessive cell overlap  Neighbor List omissions  Sub-optimal parameter settings  Hardware defect, software issue, etc o Adjust and iterate relevant RF parameters to Resolve performance issue  Primary and Secondary parameter o Escalate product issues to development to remedy defect o Catalog unresolved issues for long term solution (e.g., antenna adjustments)



Key RF Performance metrics (distribution and map plots) o SINR o Data Rates, MCS, RBs o Throughput (DL & UL) o BLER o UE transmit/receive power levels o Drop calls o MIMO mode o Latency results



Data collection primarily involves continuous FTP downloads of a large file o Potentially multiple iterations after adjusting primary and secondary optimization parameters o When the cluster is fairly optimized, several additional benchmarking tests can be executed towards the end

5.13 System Test  After concluding Cluster level optimization on each cluster, various clusters in the network are merged  System Test are designed to measure performance throughout the system o Goal to ensure performance is preserved along cluster boundaries  Typical a drive route 4-6 hours long per system of 100 cells o Iterate parameter adjustments similar to the Cluster tests  Benchmark typical RF performance metrics (listed earlier) o Some of them serve as Exit Criteria to determine System readiness for commercial launch  Many times either Cluster or System Tests are executed, but not both o Depends on size of the system and agreement with the customer 5.14 Final Report

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The final report shall include all or some of the following items, depending on the agreement with the customer:  Raw drive test data  Baseline of Coverage, Accessibility, Mobility, Retainability and Service Integrity. (Cluster level) and Histograms (cluster). Plots should explicitly identify the included Area and any Excluded Areas  Optimized Coverage, Accessibility, Mobility, Retainability and Service Integrity (cluster level) and Histograms (cluster). Plots should explicitly identify the included Area and Excluded Area  Baseline Site Configuration (table and database)  Optimized site configuration (tables or database)  Summary of all configuration changes and reasons for those changes  Baseline KPIs, at the cluster level. Any non-compliant KPIs would be expanded upon for future attention  Any identified service-affecting bugs, faults, failures in any equipment during testing  The following metrics would be captured in the Reports o Coverage  Serving RSRP, RSRQ, RSSI, RS-SINR  PUSCH and PUCCH Tx Powers  Serving Cells within 10dB o Accessibility  RRC Connection Success Rate  Attach Success Rate  Service Request Success Rate  Access RACH Latency o Retainability  RRC Drop Rate  Dedicated Bearer Drop Rate o Mobility  S1 Handover Failure Rate  X2 Handover Failure Rate  S1 Handover Interruptions Time  X2 Handover Interruptions Time  IRAT Handover success rate and locations o Service Integrity  DL/UL throughputs  PDSCH/PUSCH throughputs  PDSCH/PUSCH BLER  RLC BLER  MCS, Resource Utilization 5.15 Troubleshooting considerations for other elements of the LTE network 

Some typical hardware issues/symptoms: o Loose Antenna connector/Swapped sector cables (Sector drives/Functional Test) o Low power / SNR (power amplifier module/filter/radio) o GPS Timing circuitry (likely will impact co-located 1x/DO cells) o High RSSI (possibly linked to external interference, eliminate that first) o Issues in the uplink chain (RACH attempts maxing out) o Issues in the forward link chain (low DL SINR and data rates close to the cell)



LTE Backhaul o Provision adequate Bandwidth (100Mbps) and storage space (100GByte) in the server to support peak data rates o High Packet loss/latency/jitter  Ping from UE (client) to server under benign RF  Flood ping from MME and SGW to eNodeB

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 Use of PDM tool to isolate issues 

Routers o Two types of routers used to offer IP/MPLS service over backhaul  7750 Service Router terminates the backhaul at the ePC site  7705 Service Aggregation Router terminates backhaul at each eNodeB o Ensures proper VLAN provisioning to separate OA&M traffic from user data and signaling traffic o Floods ping/PDM tool to isolate packet drop/latency/jitter issues

Figure 4 LTE Elements 





MME (Improper configuration of MME elements can impact throughput performance) o Maintain and verify proper IP connectivity across various IP elements  eNB to MME and SGW  Proper VLAN provisioning for OA&M and user data streams o

Use of high bandwidth ping to isolate bottlenecks

o

Duplicate IP address assignments can lead to high packet loss/latency

SGW/PGW o Beware of any mismatches in the SGW/PGW Ethernet interface configuration  Match line speeds and mode between a pair of Ethernet interfaces o

Mismatch between two endpoints will cause collisions, packet drops and/or large variations in latency  Becomes more apparent with multiple users  E.g., Full duplex on one side/Auto-config on the other side  Applies to any intervening switches/routers between the PGW and SGW

o

Allocate adequate bandwidth between PGW and SGW

Core Network Backbone

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Ensure minimal latency and packet drops between the PGW and external gateway to the internet/test server Important for realizing full potential of the LTE high speed data rates  FTP more sensitive to packet losses  HTTP more sensitive to latency Consider regional distribution of PGW and SGW as opposed to cross-country location  Ideally both should be co-located Use of IP network tools to trace and isolate the problem link/element

o

Match line modes/speeds between various network elements in the chain

o

Allocate proper bandwidth in the core network to support LTE peak data rates with several users across several eNBs

o o

o

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Test Server o Some of the considerations discussed earlier apply  Match line speeds/modes with the PGW/intervening switches/routers  Provision enough bandwidth (100 MB) between the PGW and the server to allow high data rates with multiple users  Minimal hops/latency to the PGW o

Server should be capable of staging multiple FTP sessions  Windows Server Edition is a good choice



Test UE o Test with known/well calibrated terminals  Use of internal antennas for test consistency  Makes sure UE is not close to the laptop or on the ground of the van  Ensure no impact on throughput due to LLDM logging



Client o Configure protocol stack parameters to optimize throughput performance  During RF optimization  Place UE away from the client laptop through USB cable  Do not plug UE directly in USB of client  Do not put UE on touchpad of Client laptop o

Some recommended settings:  TCP window size: 512kbytes for DL/UL bi-directional  TCP window size: 1MB DL to achieve high single user DL TCP throughput  IP Header/VJ compression: off  Selective Ack: on  TCP Time stamping: off  Use Windows XP client

o

Use well compressed binary files for FTP testing  Binary mode for data transfer

5.16 Antenna Down Tilt Adjustment o The optimal tilt angle depends on:  Base station height  Vertical beam width  Site spacing

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Figure 5 Antenna Beam The following situations can be used to justify or recommend mechanical down tilt to the customer 5.16.1 Pilot pollution

Figure 6 Pilot Pollution

The circled areas are pilot polluted areas that lead to drop calls. Pilots need to be controlled to create one or two dominant pilots. Preference would be to control the pilot through antenna physical change such as mechanical down tilts and electrical tilt

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Figure 7 Dropped Call caused by Pilot Pollution 5.16.2 Overshooting Cell

Figure 8 Overshoot Cell id 12 is overshooting beyond its coverage area into a neighbor cell causing interference. Signal can be controlled through physical down tilts. 9/2/2011

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Overshooting Cell contributing to low throughput and drop call

Figure 9 Overshoot Impact on RSRP

Figure 10 Overshoot Impact on Throughput

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Figure 11 Overshoot Impact on Drop Call

5.17 IRAT 5.17.1 1. 2. 3. 4. 5.

IRAT Test Preparation Procedure: Make sure that all parameters for LTE to eHRPD are reviewed Define LTE to UMTS/eHRPD border route and agree with the customer Test the UE in LTE only to make sure it works in LTE Test the UE in UMTS/CDMA only to make sure it works in UMTS/CDMA Configure the Communication Module to “GMSS”

5.17.2 IRAT Test Execution Procedure: Open LLDM for LTE and QXDM for eHRPD/UMTS on the same laptop

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Figure 12 LLDM and QXDM 1. 2. 3. 4. 5.

Attach in LTE Check IP assignment (make a note) Start DL UDP or FTP Gradually drive towards the eHRPD/UMTS coverage area (away from LTE signal) Look for Measurement Report (MR) followed by RRCConnectionRealease on LLDM (This inicates HO to eHRPD/UMTS) 6. On QXDM you will see some activity – monitor Pilots sets and HDR Power 7. Check for successful IRAT by looking at [“RRC Connection Release” Other, Redirected Carrier info (EUTRA: NA, Fdd 4415, Tdd: NA] on signal log message 8. IRAT fails if you see [“RRC Connection Release” Other, Redirected Carrier info (E-UTRA: NA, Fdd:NA, Tdd: NA]

Figure 13 Messages collected by UE

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5.17.3 Measuring LTE->UMTS/eHRPD HO interruption time using WiReshark (start capture packets in non-promiscuous mode) 1. 2. 3. 4.

Call is up on LTE – active DL data transfer (UDP or FTP) HO to UMTS/eHRPD, wait until data transfer Resumes before you stop the logging Take a note of the timestamp where MR was sent ‘Signal Log Messages’ on LLDM Eye-ball around that timestamp on wireshark (make sure you have the right display format for time – from ‘view’ -> Time Display Format -> Time of Day (ctrl-Alt+2) 5. Take the difference between the packet timestamps for the particular protocol type (UDP or FTP, ICMP) that you used during data transfer

Figure 14 IRAT Handover Messages

5.17.4 Idle LTE- eHRPD/UMTS Handover 1. 2. 3. 4. 5. 6.

Attach on LTE Check IP assignment (make a note) Start pinging your test server (e.g. 10.203.9.200) Stop pinging (make sure the UE goes idle) Gradually drive towards the UMTS/eHRPD coverage area (away from LTE signal) Make sure LTE signal is lost and you have UMTS/eHRPD – check your IP

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1. ipconfig identify the IP address of the PPP link, e.g 10.212.130.211, and gateway IP 10.212.130.209 2. route delete 0.0.0.0 mask 0.0.0.0 10.212.130.209 The above step will stop Client Laptop from sending DNS queries. If you have a need for accessing specific server you can always add the route to that server by 3. route add 10.203.9.200 mask 255.255.255.255 10.212.130.211 4. Use route print to verify your new routing table 6 6.1

Data Collection Kit Configuration Kit Configuration

Figure 15 LTE Kit Configuration

6.2 PC Configuration Data Laptop Configuration  The UE will interface with a data laptop to support applications such as pings, FTP, UDP data transfers  The laptop should be configured per the recommended parameters to optimize performance and provide an appropriate comparison to existing data.  These recommendations include: o Windows 2000 Professional or Windows XP editions o IP header compression turn OFF o PPP software compression OFF o 512kbytes TCP window size downlink/uplink bi-directional traffic o MTU of 500bytes o No background application to steal Throughput, such as:  Windows automatic updates  Lucent Tunneling software

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Real Player updates Downloads of various ads could occur in background windows after web browsing Make sure these types of programs are not running while testing

7 Naming Convention The names and Numbers of Markets, and Clusters shall be discussed with and agreed by the customer. An example of the Naming Convention is as follows: File Names:

A separate log file will be output for each device. The log files should be named based on the Cluster naming convention and should include the device identity conforming to certain numbering scheme. An example of the file name creation is as follow: Generic File name: AAAA_B_C_D_E_(timestamp).F.nmf Where AAAA = submarket code B = cluster number C = super cluster number D = band indicator (“7”=700MHz, “A”=AWS) E = LTE Bandwidth (“5M”=5MHz, “10M”=10MHz)

(timestamp) = Nemo logic for timestamp at the start of logging F = Device number (1,2,3,4 or 5) For example, a drive conducted in the WABA submarket, cluster 18, super cluster 4, in the 700MHz band and with 10MHz bandwidth will have associated logfiles in the following format: LTE LTE LTE LTE

Device 1 Device 2 Device 3 Scanner

WABA_18_4_7_11Mar16 WABA_18_4_7_11Mar16 WABA_18_4_7_11Mar16 WABA_18_4_7_11Mar16

UMTS/GSM Scanner 8 8.1

114524.1.nmf 114524.2.nmf 114524.3.nmf 114524.4.nmf

WABA_18_4_7_11Mar16 114524.5.nmf

How to set up and use LG Adrenalin UE LG Adrenaline Tips 

Adrenaline LED

Figure 16 LGE Adrenaline LED 

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The Y-USB cable is used to ensure sufficient power to the UE (especially in poor coverage)

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Figure 17 Adrénaline Y-USB Cable 

Remove the back cover to insert the SIM card.

Figure 18 Adrenaline with cover removed

8.2  



   9

Useful AT Commands If you want to disable auto-attach, then you can use the AT COMMAND “at%proc=0,1” via HyperTerminal If you want test as LTE only mode, then you can use AT COMMAND “at%ratmode=4,4” via HyperTerminal This AT COMMAND should be typed every each time when you plug in the AD600 and execute LG CM If you want test as 3G only mode, then you can use AT COMMAND “at%ratmode=2,2” via HyperTerminal This AT COMMAND should be typed every each time when you plug the AD600 and execute LG CM If you execute LG CM without any above procedure, device runs as dual RAT mode If you want test as PS only attach mode, use AT COMMAND “at+cemode=0” via HyperTerminal If you want test as CS/PS combined attach mode, use AT COMMAND “at+cemode=2” via HyperTerminal

Using IPerf and WINDS

11.1 IPerf IPERF: Background  Iperf is a commonly used network testing tool that can create UDP and TCP data streams and measure the Throughput of a network that is carrying them.  It has client and server functionality; and it can measure the Throughput between the two ends either unidirectional or bi-directional. 

It is an open source software; and it runs on various platforms including Linux, Unix and Windows



When used for testing UDP capacity, iperf allows the user to specify the datagram size and provides results for the datagram Throughput and the packet loss



Typical iperf output contains a time stamped report of the amount of data transferred and the Throughput measured



Iperf reports bandwidth, delay, jitter, and datagram loss

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Make sure iperf program is installed on your PC and Server

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Execute iperf from where the program resides

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Iperf software can be obtained from www.iperf.com Install the program on the client pc and also on the server You can “vnc” into the iperf server and execute iperf commands whilst you are sending in the test van or you will need a dedicated person (SAM engineer) to help you execute iperf command on the server side Iperf setup

Figure 19 IPerf Setup

Here is a diagram where iperf is installed on linux and microsoft windows machines. Linux is used as the iperf client and windows as the iperf server. Of course, it is also possible to use tow linux boxes

Iperf Execution Command 



Downlink o At the server, execute the following (Transfer Command)  $iperf –c -u –b 60M –t240 –l1400 o At the client, execute the following (Listen Command)  C:\iperf –s –u Uplink o At the server, execute the following  C:\iperf –c -u –b 30M –t240 –l1400 o At the client, execute the following  $iperf –s –u

c = client s = server u = udp t = time(s) b = bandwidth l = payload By default iperf uses TCP/UDP port 5001, so make sure it’s not blocked. This is an example

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By default, iperf fling TCP packets over your wires as fast as possible. A bi-directional test, which is the –d option, runs both ways: alex@uberpc:~$ iperf –c -d

Iperf can test multi-cast performance by running several servers listening on your multi-cast address: $ iperf –su –B 10.10.0.112 $ iperf –su –B 10.10.0.112 $ iperf –c 10.10.0.112 –u –b 512k You’ll want to set the –b value to a speed appropriate for your network, and use your own multi-cast IP address You may use your own files for testing throughput on compressed and uncompressed files by specifying the filenames on the client: $ iperf –c 10.10.0.112 –F [filename] Testing UDP aanokye@linux:~$ iperf –su alex@uberpc:~ $ iperf –c 10.10.0.112 –u [ 3] 0.0-10.0 sec

1.25 Mbytes

1.05Mbits/sec

0.003 ms

0/

893 (0%)

Why is UDP so slow ? Because iperf’s default is 1.0 Mbits/second, so it’s not a network problem. We can try some different values to see what happens. Let’s tell it to use all available bandwidth: aanokye@linux:~$ iperf –su alex@uberpc:~$ iperf –c 10.10.0.112 –u –b 100m [ ID] Interval Transfer Bandwidth Jitter Lost/Total [ 4] 0.0-10.0 sec 113 Mbytes 95.0 Mbits/sec 0.008 ms 544/81389 (0.67%) [ 4] 0.0-10.0 sec 1 datagrams received out –of-order This is very good speed, and 0.67% datagram loss is insignificant. That’s a good clean connection. The below example whales on your line by sending 200-byte datagrams at 100 Mbits/second: aanokye@linux: ~$ iperf –su –I 1 alex@uberpc:~$ iperf –c 10.10.0.112 –u –l 200 –b 100m [ 3] 0.0-10.0 sec 106 Mbytes 88.9 Mbits/sec 0.219 ms The –i option generates a progRess display every second.

2683/187644

(1.4%)

9.1 WINDS Winds (Wireless IP Network Data Source) _ Background  Application instances reside on the client and server  Client side can invoke/control both upload and download  Single server instance can support request from multiple clients  Key Parameters: o Transmission 9/2/2011

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o Packet Length o Test Duration o Server Destination The Three types of Test that WINDS can perform are: o UDP Test o FTP Test o Ping Test

Winds – Configuration  Winds comes packaged with an installer, and must be installed on every laptop/client that is intended to operate WINDS on as well as the server to which these client will communicate  Install the package and make the appropriate choice to use application run as a wireless terminal. This can always be changed by the settings:Configure->adapter 

Figure 20 Configure Server / Client Proterties 

The next step is to configure the adapter: select configure->adapter. The following screen will appear

Click on New and assign a name to each adapter to be used for testing

Figure 21 Configure Adapter Properties 

The final step is to configure the logging options. Select configure->logging. The following screen will appear

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Figure 22 Configure Logging Properties 

Select the appropriate directory to log the files. This only needs to be specified if Enable Logging is checked. Select the level of detail required for the logging and the periodicity for the periodic logs. Periodic log interval is only applicable to UDP test. FTP test always has one-second

Running UDP Test – Downlink There must at least be one instance of the application running on both the server and the wireless terminal. This wireless terminal may then either Request (Downlink) or Send (Uplink) data to the server. This may be done by selecting Transfer->Request-> or Transfer->Send Respectively on the wireless terminal

Figure 23 WINDS

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Figure 24 WINDS Request Running UDP Test – Uplink Sending data over the uplink to the server is considerably simpler to configure. The transfer maybe initiated at the wireless terminal by selecting Transfer->Send, or by selecting the indicated icon on the toolbar below

Figure 25 WINDS Request (2)

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Figure 26 WINDS Send Configuration of Winds FTP Wireless terminal may open an FTP Test window by selecting Transfer->FTP or by selecting the indicated icon in the tool bar

Figure 27 WINDS Tool Bar

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Figure 28 WINDS FTP FTP TASK In the middle of the FTP window, there is a task list control, which allows users to create tasks to be done in a test. To add a new task, simply right click in the task list to show a pop-up menu, and then select the desired task.

Figure 29 WINDS FTP The following table shows description of each task Task Description Get Download a file from FTP server. The on-going transfer will be aborted when the timer expiRes Put Upload a file to FTP server. The on-going transfer will be aborted when the timer expiRes Redo Redo the previous Get or Put task until the timer expiRes. Redo has no effect on other tasks Pause Do nothing until the timer expiRes Connect Dial up the connection Disconnect Hang up the connection Restart Restart the previous tasks Running FTP TEST

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When Start button is clicked, the test starts henceforth. On the task list, the current task will be highlighted. The fields such as (Elapsed Time), Size, %, and Rate will be updated every second. The Avg. field shows the average throughput of successful transfers, and is updated every time a transfer is finished. The Count field shows the number of times this tasks has been executed

The status monitor at the bottom of the window will show FTP commands and replies passed between WINDS and the FTP server, as well as error warnings and informative messages

Configuration of Winds PING Ping is usually used for checking if a remote host is Responding or measuring round-trip latencies between the hosts. In wireless data network, it can also be used for waking up an access terminal from dormant mode

Figure 30 WUNDS Tool Bar

Figure 31 WINDS Ping Running Winds PING TEST When Start button is clicked, the test starts henceforth. On the lower part of the window, there are several fields showing the status of the on-going test

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How to set up and use LLDM to collect drive test data

10.1 LLDM (LGE Logging Diagnostic Monitor) Introduction

10.1.1 What is LLDM? 

LLDM is a Diagnostic Monitor for logging and analyzing over-the-air network system performance and parameters. It is used only for LG UEs.

10.1.2 Components:  

PC Side o LLDM Host (Measurement Tool): logs and analyzes real-time diagnostic and measurement data LTE UE Side o LLDM Agent: collects diagnostic and measurement data and transfers to LLDM

10.1.3 Target Systems 

LTE

CPU RAM Video Operating System Interfaces

Description Pentium IV 1.8 GHz~ 512MB ~ 1024 * 768 ~ Windows XP Professional USB 2.0 High Speed

Figure 32 LLDM Operation Environment

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10.2 Installation 10.2.1 Required H/W and S/W LLDM is designed to be installed and run on a PC running Microsoft Windows XP 10.2.2 Installing LLDM  

Execute DM Setup file License Agreement

Figure 33 License Agreement Dialog 

Select Component to install

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Figure 34 Select Component to Install

Figure 35 Choose Install Location Dialog

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Figure 36 Installing Dialog

10.3 License Key activation If this is the first time to use LLDM, you may need license file to run LLDM. Please follow the steps below to get a license file. If you already have the valid LLDM license file, you may skip this section. Otherwise, please go on to the next step

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10.3.1 Step 1

Figure 37 LGE_LLDM_PcSerialChecker 10.3.2 Step 2

Figure 38 PC Serial Number 10.3.3 Step 3 User should copy this ID in a clip board, and paste it into an email. Then please forward it to a person in charge. (Bean, Vern) After you receive the license file (named “NETIMIZER.LIC”), please copy it to the LLDM installation folder (i.e.; C:\Program Files\LGE\LLDM). Normally, the license file expires after a certain period of time, which depends on the license agreement. As long as the license file is valid, you may upgrade the new LLDM if you get one. Thus please backup your own license file into a safe folder.

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10.4 Operation 10.4.1 Setup Menu

Figure 39 Setup Menu 10.4.1.1 Set Com Port   

Choose LLDM program from {Start -> Programs -> LLDM} Menu and run LLDM. Make sure LTE UE is running and USB cable is connected properly Port Setting o Select [Setup -> Set Com Port] in LLDM o Click “CH1” check box o Set Port number (LTE USB Modem Port Number). If LTE UE is connected with LLDM through USB, LTE USB Modem Port is appeared in Device Manager o Set Baud Rate, Flow Control like the below picture o Click “Log Mask” Icon to select items to be transmitted from LTE UE o Click “OK” button

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Figure 40 Port Setting

Port Baud Rate Flow Control RTS DTR Log Mask

Description LTE USB Modem Port Baud Rate (115200 fixed) Flow Control Type (None, Hardware, Software type) RTS (Request To Send) DTR (Data Terminal Ready) Only the log data items you choose in Log Mask Setting Tree View are collected at LTE UE side and sent to LLDM

The connection status of COM port can be checked on the status bar. When COM port is connected correctly “R(115200)” will be appeared like the following picture.

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Figure 41 Port Connection Status

10.4.1.2 Logging Mask Only the log data items you choose in Log Mask Setting Tree View are gathered at LTE UE side and sent to LLDM

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Figure 42 Log Mask Setting Dialog

10.4.2 Information Menu

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Figure 43 Information Menu

10.4.2.1 Logging Status You can start/stop/pause/resume logging and monitor logging status in the Logging Status Dialog. When you start logging, only log data items you choose in log mask setting tree view are logged into a log file

Figure 44 Logging Status Dialog Item Logging status Log start time Elapsed time Log file name Log file size Received logs Start

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description Current logging status Time that logging was started Elapsed time from the log start time Log file name Log file size. (bytes) Total received log number Start the logging

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Stop Pause Resume

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Stop the logging Pause the logging Resume the logging

When logging starts, LLDM automatically determine the name of logging file based on logging start time

10.4.3 Replay Menu

Figure 45 Logging Status Dialog

10.4.3.1 Load Replay Menu Load a file you want to replay in LLDM

Figure 5-8: Select Log file Dialog 9/2/2011

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1.1.1.Replay Toolbar After you load a file, you can see a Replay Tool like the following picture

Figure 46 Replay Toolbar

10.4.4 Exit Menu When you want to exit LLDM click Exit menu

Figure 47 Exit Menu

10.4.5 Tree View Menu To show Tree View, Move mouse point to left side in the LLDM main window

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Figure 48 Tree View Menu

10.4.6 Layer 1 Menu L1 menus consist of command and log items. L1 command items are intended for L1 single test without protocol stack. Do not try to use L1 command items when UE Configuration menu in Protocol stack is enabled. L1 log items can be displayed without any Restriction if each item log mask is enabled

Figure 49 Layer 1 Menu

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Cell Information displays neighbor cell lists which are collected from the searcher and measurement module. The cell information provides DL frequency, Frame boundary and RSRP value for all of cell in neighbor cell list with detected cells, also history of RSRP of each cell is described by graph window.

Figure 50 Cell Information

10.4.6.1 Wide- Band CQI Information The wideband CQI information shows measured CQI of wideband in the UE under the assumption of the configuration of aperiodic CQI. It simultaneously shows CQI for rank1, rank2 of codeword 0 and 1 as well as PMI for each. User can enable or disable the display of wide-band information by clicking the check-boxes in the GUI. The rank information shows average of rank in the UE. The UE sends a rank, 0 or 1, according to measured propagation condition. The DM shows an instant value of rank as well as average value. This average is Reset when the Reset button is pressed.

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Figure 51 CQI and Rank Information

10.4.6.2 Serving Cell Quality Information The serving cell quality information shows SNR of reference signal (RS SNR) and received power of reference signal (RS RSSI).

Figure 52 Serving Cell Quality Information

10.4.7 Cell Information The CFI Information shows frequency counts for detected CFI during 1sec. It displays not the direct CFI value but that of CFI index is displayed. The CFI index corresponds to the actual control symbol length of PDCCH index pt PDCCH symbol length is given by:

User can enable or disable the display of that information by clicking check-boxes in the GUI

10.4.7.1 PDSCH PHY Throughput This shows how much to get the downlink data in 1sec. This unit is Mbps.  First row: PDSCH PHY Total Throughput  Second row: PSSCH PHY Codeword0 Throughput  Third row: PDSCH PHY Codeword1 Throughput

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Figure 53 Throughput 10.4.7.2 PDSC H BLER (Block Error Rate) PDSCH BLER displays the ratio of transport blocks that get CRC_NAK over the total received transport blocks. The unit is percentage  First row: PDSCH Total BLER  Second row: PDSCH Codeoword0 BLER  Third row: PDSCH Codeworkd1 BLER

Figure 54 Block Error Rate 10.4.7.3 PDCCH Detection Rate UE can’t calculate PDCCH BLER because UE doesn’t know when eNodeB sends its PDCCH. In other words, UE detects PDCCH blindly. So, UE DM supports this item similar with PDCCH BLER. This item displays how much detects PDCCH (each DCI format) for 1 second. That is, it displays amount, not percentage (ratio)

10.4.7.4 PUSCH PHY Throughput UL Throughput log shows the uplink data throughput at UE side. The types of information are transferred to the DM. One is the number of bits in new transmission only. The other is the number of bits in all transmission including new transmission. The new transmission information reflects the true transmission rate.

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Figure 55 PDSCH Throughput 10.4.7.5 LOGMASK The following is a sample log mask. Please use log mask attributes to collect data for all test cases. This log mask has been verified by the eDAT Tool team.

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Figure 56 Log Mask 10.5 How to use LLDM a. Click on start-, click on All program, click on LLDM and hit

Figure 57 Activating LLDM b. The following views should be opened for data collection for stationary test execution: i. CH1 Multipath Information (tracks serving cell id that Ue is camp on)

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CHI L1 Control (checks whether Ue power is fixed or power control is turned on) CH1 Signal Log Message (checks RRC and NAS signaling between UE and eNdoeB) CH1 L1 Graph (visual Downlink information received by UE) Logging Status (gives logging information such as log start time and log start end)

Set the port by clicking on the icon for the port setting, ”port setting” submenu would pop up>check on CH1 among the CH list

Figure 58 Port Setting d. Click on “Device Manager” icon->”Device Manager” submenu would pop up->open up the “modem” on the list-> right click on the “LTE LGE USB Modem”-> note the com port assigned and assign to the port to the device

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Figure 59 Port Setting (2) e. Set up the GPS by clicking on GPS tab as indicated

Figure 60 GPS Set Up f.

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Set up log mask using predefined log mask. Click on log mask icon; log mask sub menu would pop up

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Figure 61 Port Setting (3) g. Click on load on sub menu view, pick pre-defined log mask of choice and click ok

Figure 62 Select Pre-defined Log Mask h. To make a call, click Go to start, Click on LGE LT CM icon; “LG Communication Manager” would pop up. Make sure LTE signal bar shows up and click on “Connect”

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Figure 63 Use Connection Manager to Connect

I. UE would synchronized with eNodeB and start the attach process

Ue synchronized with eNB

Successful Attach

Figure 64 Attachment Process j. Monitoring Test Progress on L1 Signal Graph

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Figure 65 Signal Graph

K disconnect the Ue when test is done

Successful detach

l. Handover Mobility View (The following view should be monitored when cluster drive testing_ a. Signal Log Message (track RRC/NAS signaling between UE and eNodeB) b. CH1 Radio Problem Cause (time stamp and radio failure log attributes) c. CH1 Cell Information (tells what UE is synchronized and what neighbor eNodeBs monitored) d. CH1 Handover History (gives Results of successful/failure handover between source and target cell e. CH1 Neighbor cell list 2 ( gives serving cell and associated neighbor cell list for intra/inter frequency f. CH1 Signal Graph (allows to monitor progress testing)

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Figure 66 Handover View

11

How to set up and use NEMO to collect drive test data

Note: Adrenaline is a LG UE. The steps described below are applicable for other LG UEs. 11.1 Getting Started o

Physical connections  Insert USB hub and USB GPS to laptop  Insert Nemo USB dongle into hub  Insert SIM card into UE and connect to USB hub

o o

Upon inserting the Adrenaline, this may be recognized by the toolkit laptop as an external drive or removable storage; and you may have to install Communication Manager. Ensure that the Adrenaline LED is illuminated

o o

Query the modems to ensure that the UE is communicating with the laptop Verify you can make calls using LG Communications Manager and can connect to the internet

11.2 NEMO Outdoor 11.2.1 OPEN NEMO OUTDOOR    

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Load your workspace (ALU-at&t-LTE is the ALU RF Tools Lab workspace) Verify that your hardware is displayed Ensure that your device configuration is loaded Press start devices

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Figure 67 - Nemo Outdoor 1st Prompt



Nemo Outdoor tool opens o Device status indicator should be flashing green o Device state should be: “Device is started”

Figure 68 - Nemo Outdoor Main Screen

11.2.2 VERIFY YOUR SCRIPT SETTINGS Note: Scripts are pre-defined for all the drive teams. 11.2.2.1 Check UE1 Settings (Iperf): 

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Click on the device settings button of UE1 (Red exclamation point)

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Select Script Properties Ensure that the correct script is loaded for the Iperf test Press the Script Editor button Click on each line in the test sequence and verify the specific market/network settings

Figure 69 - Verify Iperf Scripts in Nemo Outdoor

11.2.2.2 Check UE2 Settings (FTP)     

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Click on the device settings button of UE2 (Red exclamation point) Select Script Properties Ensure that the correct script is loaded for the FTP test Press the Script Editor button Click on each line in the test sequence and verify the specific market/network settings

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Figure 70 - Verify FTP Scripts in Nemo Outdoor

11.2.2.3 Check UE3 Settings (Ping) o Click on the device settings button of UE3 (Red exclamation point) o Select Script Properties o Ensure that the correct script is loaded for the Ping test o Press the Script Editor button o Click on each line in the test sequence and verify the specific market/network settings

Figure 71 - Verify Ping Scripts in Nemo Outdoor

11.2.3 CONNECT YOUR SCANNERS 

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Note that PCTEL scanners have a known problem that causes them to be non-responsive in various drive test tools (including Nemo-Outdoor) o You will have to follow a specific sequence of events and rely on power-cycling the scanners o A scanner is “non-responsive” when you cannot detect it in Nemo-Outdoor (note that the scanner may still be visible in Windows Device Manager) With Nemo-Outdoor open o Power-cycle your scanners (i.e. physically disconnect the DC power cable) o Unplug/Re-plug from the laptop (i.e. physically unplug the USB cable) o Verify that the scanners are removed from Windows Device Manager and that they re-appear after power-cycle and reconnecting to the USB ports

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Figure 72 Windows Device Manager (PCTEL Scanner) 

Configure your scanner settings for your market-specific conditions and for the type of testing that you will be performing (Refer to the overview of PCTEL scanner settings section)

11.2.4 SCANNER(S) BECOME NON-RESPONSIVE      o o o o o

The PCTEL scanners are known to enter a non-responsive state occasionally (most often when restarting the drive test tools like Nemo Outdoor). Note that the PCTEL scanners do not become non-responsive while Nemo Outdoor is in normal operation in Online mode (i.e. your testing will not be impacted) Your scanner is non-responsive when Nemo-Outdoor will not allow you to go into Online mode A non-responsive scanner may also prevent the laptop from shutting down – in which case you simply need to disconnect the scanner from the laptop If Nemo-Outdoor generates errors stating that the scanner failed to start when trying to enable Online mode: Select “Work Offline” Disconnect the USB cable from the laptop Disconnect the scanner DC power cable so that it is off Reconnect scanner power cable, and connect scanner USB back to laptop Enable Online mode in Nemo-Outdoor again

Figure 73 Non-responsive PCTEL Scanner prevents Nemo-Outdoor from going online

Figure 74 PCTEL Scanner is non-responsive

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11.2.5 NEMO-OUTDOOR: WORK ON-LINE  o o

Click on the button to enable Online Mode (i.e. start the devices) Device status indicator should be flashing green Device state should be: “Device is started”

Figure 75 Nemo-Outdoor with Online mode enabled



Ensure that your GPS is working in Nemo Outdoor o Refer to the GPS Information screen to ensure that you are receiving adequate GPS data

Figure 76 - Verify GPS in Nemo Outdoor

11.2.6 NEMO OUTDOOR TIPS  To record data: o Press the Start/Stop Scripts button to start the scripts & to start recording data

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Figure 77 - Record & start scripts in Nemo

o

Press the Start Recording button if you want to start recording without executing the scripts

Figure 78 - Starting scripts without recording

o

Collected data is stored in the default folder: C:\Nemo Tools\Results

 Devices are numbered by Nemo Outdoor and use this number to identify the device within Nemo Outdoor (i.e. throughout multiple views or in the naming of the collected drive test files)

Figure 79 - Device identification in Nemo

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Figure 80 - Device identification in the Nemo results



You can change the global Nemo Results file naming convention o Go to the Configuration Manager (in the standard tools lab configuration this is available in the Setup tab) or you can click on View  Configuration Manager o From within Configuration Manager, select Measurement Properties  Rt-click  Select Properties

Figure 81 - Configuration Mgr Properties

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Figure 82 - Configuration Mgr through View Menu

o o

Within the User Interface Properties, select the Measurement tab You can edit the Filename structure

Figure 83 - User Interface Properties: Measurement tab

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Figure 84 - Edit the global naming structure

o

The results files (in C:\Nemo tools\Results) now reflect your global name change

Figure 85 - Results files reflect changes in naming convention

o   

The naming convention is defined in the Naming Convention section. An Example is as follows:

UE1 - Iperf (Long Call) UE2 - FTP (Short Call) UE3 - Ping (Latency)

SMKT_Cluster#_SuperCluster#_Band_BW:  SMKT - Sub market code  Cluster# - Regular cluster number  SuperCluster# - Super cluster number in which the regular cluster located  Band - Frequency band like 700MHz or AWS  BW - LTE channel bandwidth like 10M or 5M Example: NYCX_6_2_7_10M_LC1.nmf (Long Call)

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NYCX_6_2_7_10M_SC1.nmf (Short Call) NYCX_6_2_7_10M_LT1.nmf (Latency



Nemo Outdoor is set up with multiple tabs/Groups o Click on a tab/Group to view the content displayed in real time o You can also access the various tabs/Groups by clicking on View  View Groups  Select the tab/Group that you wish to view

Figure 86 - Nemo Outdoor Groups (tabs)

Figure 87 - Access the various groups (tabs) from the View menu

o

You can add your own tab/Groups by right-clicking in the Group bar and selecting “Create New”

Figure 88 - Creating a new group (tab)

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You can add/create additional views  If the existing views do not display the data that you are trying to see in real-time, simply open a new view by clicking on the parameters tab in the right-hand side. This reveals the hidden Parameters menu.  You can drill down in the sub-menus to find your specific measurement or you can type your desired measurement in the search box to filter accordingly

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Figure 89 - Selecting your own measurement views

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If the desired measurement has a mini-graph icon, you can double-click on the desired measurement to open that specific view, otherwise you will have to assign the measurement to a graph or grid

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Figure 90 - Description of mini-icon when adding your own measurement views

Figure 91 - Adding your own measurement view

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11.3 ADRENALINE & USB HUB PHYSICAL CONNECTIONS

Figure 92 - Connecting Adrenaline UE to USB hub

Figure 93 - USB hub connections 11.4 TOOLS LAB ATT-LTE RF DRIVE TEST KIT CONFIGURATION

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Figure 94 - ALU at&t-LTE Nemo RF drive test kit configuration (kit #3)

11.5 ADRENALINE RECOGNIZED BY LAPTOP 

Upon inserting the Adrenaline, this may be recognized by the toolkit laptop as an external drive/removable storage or may try to install AT&TCM o The first step is to stop all processes/actions that the UE is trying to undergo o To make the Adrenaline be recognized as a modem go to My Computer  Right-click on LGE 3G Mobile  Select Eject – Note that you will have to do this each time you insert UE

Figure 95 - LG Adrenaline as an external drive

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Figure 96 - LG Adrenaline attempting to install AT&TCM

Figure 97 - Eject Adrenaline Removable Storage to show m



If drivers/firmware/software was changed, the toolkit laptop may undergo the process of detecting the LG Adrenaline as a new device

Figure 98 - LG Adrenaline detected as new device



Device Manager detects the Adrenaline Modem & COM ports o LGE Adrenaline COM ports are not set to s standard COM port number assignment in ALU RF Tools Lab RF drive test kits as these are susceptible to change with changes in firmware/software and drivers o The user is responsible for identifying the COM ports associated with the specific device as they are assigned by Windows XP

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Figure 99 - Device Manager detects Adrenaline as a modem

11.6 HOW TO IDENTIFY COM PORT NUMBER ASSIGNMENTS 

To identify the port number associated with a modem o Device Manager  Right-click on desired modem  Select Properties o Go to Modem tab to verify current COM port number

Figure 100 - Select Modem

Figure 101 - Verify current COM Port



To identify the COM port associated with a standard (non-modem) COM port

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Open Windows device manager and note that the current COM port number is visible in Device Manager

Figure 102 - Select COM Port

11.7 QUERY YOUR MODEM      

Query the modem to ensure connectivity between the UE and the laptop Right-click on LGE F1 LTE USB CDC Modem Interface Select properties Go to Diagnostics tab Press Query Modem Look for responses to the commands indicating connectivity between the UE and the laptop

Figure 103 - Query modems to verify connectivity to laptop

11.8 DRIVERS & SOFTWARE  

Only use software and drivers that are approved by the ALU RF Tools Lab o Do not load any non-approved applications or drivers! Drivers and software can be downloaded from the ALU RF Tools Lab Web Site o ALU RF Tools Lab: http://usnavsgtk01.ndc.lucent.com/rftoolslab/ (LTE section) o Adrenaline drivers, communication manager, etc. o Software tools (i.e. Nemo Outdoor, etc.)

11.9 ADRENALINE UE SOFTWARE UPDATES  

Access to LGE Adrenaline AD600 firmware/software updates are only available to Alcatel-Lucent employees To obtain the latest ALU RF Tools Lab approved firmware/software and the associated update procedure, open a CARES ticket with the ALU RF Tools Lab o Please contact the CARES Hotline: 1-866-Lucent8. Prompt 1 o Inform the CARES agent of the following:

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  

o o

The product is “RF Kits” Provide a contact number where you can be reached State that you are requesting LGE Adrenaline AD600 software updates (i.e. the user wants access to the AT&TAdrenaline AD600 upgrade site) Ensure that you obtain a CARES AR number from the CARES agent for reference Someone from the ALU RF Tools Lab will reply to your CARES AR with the following:  Access to the LGE Adrenaline AD600 SharePoint site  Procedure to update the LGE Adrenaline AD600 software/firmware  Software update tools  Latest ALU RF Tools Lab approved software for the LGE Adrenaline AD600

11.10 LGE ADRENALINE TIPS 

Adrenaline LED

Figure 104 - LGE Adrenaline LED



The Y-USB cable is used to ensure sufficient power to the UE (especially in poor coverage)

Figure 105 - Adrenaline Y-USB cable



Remove the back cover to insert the SIM card

Figure 106 - Adrenaline with cover removed

12

How to use JDSU E6474A-X to collect Drive Test Data

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 Connect UE LG G13 to USB port of the Data Collector PC.  In the Data Collection PC, click Start, click All Programs, click JDSU wireless solutions, click E6474A-X and click E6474A-X  In the E6474A window, click File, and click Project Manager to display Project Manager screen as in Figure 107.

Figure 107 Project Manager

 In the Project Manager window, click New Project icon 108.

to display the New Project window as in Figure

Figure 108 New Project  In the New Project window, supply a name for the project in the Name box, and click OK.  In the E6474A-X window, click Configuration, click Device Wizard.  In the Add Device Window, click Next, click LG LTE Device, click Next, check LGE LTE DM Port, and click Scan  The Device Detected window will appear as in Figure 109.

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Figure 109 Device Detected  Click Yes to complete the process.  In the Add Device Wizard window, click Finish  Start WINDS the same way as mentioned in section Error: Reference source not found.  To start logging, in the E6474A window, click the green Log Mode icon. The icon will turn grey. In the Drives window inside of the Project Manager window, you will see a new log file is being created.  To stop logging, in the E6474A window, click the red button. In the Drives window inside of the Project Manger window, you will see the start time and end time of the log file.  To export the data, in the Project Manager window, click the Project you want to export, and click the Export Project

icon to display the Export Project window as in Figure 110.

Figure 110 Export Project  In the Export Project window, select the log file you want to export, and click OK to display Browse For Folder window as in Figure 111.

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Figure 111 Browse for Folder  In the Browse For Folder window, indicate the folder you want to contain the exported log file, and click OK. 13 How to use JDSU Scanner Procedure on how to configure the JDSU Scanner for the following: RSRP, PCI and Interference Signals. 13.1 Activate JDSU E6474A-X

Two ways to open E6474A-X -

Click Start, Click All Programs, Click JDSU Wireless Solutions, Click E6474A-X, Click E6474A-X OR

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Double Click on the Icon E6474A-X

on the desktop.

13.2 Creating a Project. -

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Click File, Click Project Manager as in Figure 112. After selecting Project Manager it will open the project manager dialog box as in Figure 113.

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Figure 112

Figure 113

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Click New Project Icon to create a New Project as in Figure 114.

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Figure 114 -

Enter a project name in the Name box: example, ATT LTE as in Figure 115. Click “OK” to close.

Figure 115

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Note: The “ATT LTE” Project that was created as in Figure 116.

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Figure 116

13.3 How to add a receiver based measurement. - First a receiver is attached and connected as in Figure 117. - Right Click on “Hardware”, select “Add Device” as in Figure 118.

Figure 117

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Figure 118

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Under Devices, expand “JDSU” as in Figure 119.

Figure 119

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Back View of the scanner labeled “W1314A E11” as in Figure 120. Select the correct device, for our case, the JDSU Scanner Receiver is “W1314A E11” as in Figure 121. Then click “OK”.

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Figure 120

Figure 121

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Under Hardware, W1314A E11 Device that was just created as inFigure 122.

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Figure 122

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Note: W1314A E11 device shows “disconnected” as in Figure 123.

Figure 123

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13.4 Creating a Measurement - Right Click on “W1314A E11”, select “Add Measurement” as in Figure 124.

Figure 124

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Select the measurement set you want to add as in Figure 125.

Figure 125

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Under Measurements for W1314A E11, select “LTE Channel Analyzer” as in Figure 126, then click “OK”. LTE Channel Analyzer under W1314A E11 as in Figure 127.

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Figure 126

Figure 127

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Preselector Drop Down Menu as in Figure 128. In the Preselector Drop Down Menu as in Figure 129, Select 698 MHz – 806 MHz.

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Figure 128

Figure 129

13.5 Creating a Workspace The Workspace contains user defined views and layouts. Workspaces let you manage the display of your open views. You can create multiple workspaces and display any of your open views in each of the created workspaces. The workspace tabs appears at the top of the interface, below the toolbars. -

Right Click New Workspace to display a new workspace as in Figure 130.

Figure 130

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In the New Workspace pop up window, in the New Tab Name box, provide the name of your workspace, and then click OK as in Figure 131.

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Figure 131

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Rename Workspace 1 to PCI as in Figure 132. New Tab Name: PCI, then click OK as in Figure 133.

Figure 132

Figure 133 9/2/2011

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Right Click, New Workspace. New Workspace Window, create a New Tab Name for Interference Analyzer as in Figure 134. Then click OK. Workspace for Interference Analyzer as in Figure 135.

Figure 134

Figure 135

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Select PCI Workspace Click View, Click Device Views, Click W1314E11, Click LTE Channel User List as in Figure 136. View of the LTE Channel List – Channel Power as in Figure 137.

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Figure 136

Figure 137

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Select RSRP Workspace Click View, Click Device Views, Click W1314E11, Click LTE RO R1 RSRP User List as in Figure 138. View of the LTE User List R0 and R1 RSRP as in Figure 139.

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Figure 138

Figure 139

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Select Interference Analyzer Workspace Click View, Click Device Views, Click W1314E11, Click GSM Interference Analyzer – Adjacent Channel as in Figure 140.

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Click View, Click Device Views, Click W1314E11, Click GSM Interference Analyzer – Co Channel as in Figure 141. View of the GSM Interference Analyzer for Adjacent Channel and Co-Channel as in Figure 142. NOTE: If you are not collecting GSM Interference, minimize the windows for CPU cycles.

Figure 140

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Figure 141

Figure 142

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13.6 Probing the device (Connecting the device) - Right Click on “W1314A E11”, select “Probe Device” as in Figure 143.

Figure 143

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IF JDSU RECEIVER SERIAL PORT IS NOT SET as in Figure 144. Select OK

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Figure 144

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Check USB Serial Port (COM22) for the Scanner COM Ports, select Retry as in Figure 145.

Figure 145

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W1314A E11 shows connected as in Figure 146.

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Figure 146

13.7 Checking your settings -

Click on Icon for

“Live Mode (not recording data)” as in Figure 147.

Figure 147

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E6474 – [Project] – ATT_LTE – Live Mode.

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RSRP Workspace: LTE RO R1 RSRP User List as in Figure 148.

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Figure 148

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E6474 – [Project] – ATT_LTE – Live Mode PCI Workspace: LTE Channel List – Channel Power as in Figure 149. NOTE: LTE Physical Layer Cell ID: 18 as in Figure 149.

Figure 149

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Description of the LTE Channel List – Channel Power from Agilent that shows the LTE Physical Layer Cell ID as in Figure 150.

Figure 150

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E6474 – [Project] – ATT_LTE – Live Mode

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Interference Analyzer Workspace: GSM Interference Analyzer – Adjacent Channel and CoChannel as in Figure 151.

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Figure 151

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Select Red Icon to STOP recording as in Figure 152.

Figure 152

13.8 Opening a Project (eg. ATT LTE)

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Click on “Project Manager” as in Figure 153.

Figure 153

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Right Click on “ATT LTE”, select “Set As Active” as in Figure 154.

Figure 154

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Note: AT&TLTE Template Project as in Figure 155.

Figure 155

13.9 Collecting data. -

Click on the Icon

to collect the data as in Figure 156.

Figure 156

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E6474 – [Project] – ATT_LTE – Record Mode as in Figure 157.

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Figure 157

13.10 How to export a project and associated drive test data.

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Click on the Project Manager Icon as in Figure 158.

Figure 158

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Project Manager window, select ATT LTE. Select the Export Project Icon as in Figure 159.

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Figure 159

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Export Project Window, select which drive test you want to export, select OK as in Figure 160.

Figure 160

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Browse for Folder Window. Locate the folder that you want to use for the export project. It is recommended that you use a unique name folder for each exported project. Select OK to start the export process as in Figure 161.

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Figure 161

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The export progress dialog box displays when the export is completed and if there were any problems. Select Close as in Figure 162.

Figure 162

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Exported project folder contains many files. These files contains information about property settings, view layout and drive test data. For example the “aod” file contain the drive test data as in Figure 163.

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Figure 163

14

How to use PcTel Scanner

15.1 Frequency Scanning - PCTEL GSM/UMTS Scanners Frequency scanning can be used to scan band power. It is also useful for checking that the band is clear and for finding out the center frequency. 1. After the scanner is connected and activated in Nemo Outdoor, open the Measurement Properties dialog by selecting Measurement | | General Properties. 2. In the Measurement Properties dialog, go to the Frequency scanning, UMTS page.

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Figure 164 UMTS Frequency Scranning Properties 3. In the Channel style field, select the channel width. The options are narrow band (200kHz) and wide band (3.84 MHz).  To find out the center frequency used, set the Channel Style to 200 kHz and select all the channels in the frequency region where the carrier should exist; for example, all channels allocated to an operator. The center frequency will stand out in Frequency Scanning mode. The received signal should be above the noise level in order to find out the center frequency. 4. Click the Select Channels button to open the Select Channels dialog

Figure 165 UMTS Frequency Scanning: Select Channels

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5. How to The table displays the channel numbers, not the frequencies. If you know the frequency but not the channel number, the channel number can be calculated by multiplying the frequency in MHz by five. The channel spacing is always 200 kHz. 6. Remove channels from the Selected list by selecting a channel and clicking the Remove button. 7. Add channels to the Selected list by selecting a channel from the Available list and clicking the Add button. 8. Click OK to return to the Measurement Properties dialog. 9. Click OK and OK to close the Measurement Properties dialog and to re-start the scanner with the new settings. 10. A green light on the scanner Device Info window should start blinking. This means that the device is working properly and scanning using the default settings. 11. Click the Start Recording button to start recording the results in an output file 14.1 Frequency Scanning - PCTEL EX LTE Scanner 1. After the scanner is connected and activated in Nemo Outdoor, open the Measurement Properties dialog by selecting Measurement | | General Properties. By clicking the Advanced button on the General page, you will access the Advanced Properties dialog. Here you can enable and disable the integrated GPS receiver. This means you will not need an external GPS receiver in order to collect position data. 2. On the Frequency scanning page, define the Channel style

Figure 166 LTE Frequency Scanning Properties 9/2/2011

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3. By clicking the Select Channels button, you can access the Select Channels dialog.

Figure 167 LTE Frequency Scanning: Select Channels 4. Select one band from the list or all of them. You can also select one band at a time and add the bands you want to scan. If all bands are selected, you have the possibility to select Remove All | ... items from every band. Alternatively, if only one band is selected you can remove only items from the current band through Remove All | ...items from current band. The Available view provides a list of channels that are available for scanning. To add channels to the Selected list, click on a number in the Available list and then click the Add button or simply double-click a channel to add it to the Selected list. To select all available channels for scanning, click the Add All button. An alternative method to select channels is to type the channel numbers in the field at the bottom of the dialog and to click Add. To remove channels from the Selected list, click on the channel you want to remove and then click the Remove button or double-click the channel. To remove all channels, click the Remove All button. You can select several channels simultaneously by holding down the SHIFT key and clicking on the channels you want to add or remove. 5. After making the appropriate settings, click OK and OK again and go to online mode to start the scanning. 6. A green light on the scanner Device Info window should start blinking. This means that the device is working properly and scanning using the default settings. 7. Click the Start Recording button to start recording the results in an output file.

14.2 Frequency Scanning - PCT GSM Scanner 1. After the scanner is connected and activated in Nemo Outdoor, open the Measurement Properties dialog by selecting Measurement | | General Properties. 2. By clicking the Advanced button, you will access the Advanced Properties dialog. Here you can enable and disable the integrated GPS receiver. This means you will not need an external GPS receiver in order to collect position data. 3. Go to the Frequency scanning page

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Figure 168 GSM Frequency Scanning Properties Channel style refers to the style of the channel. Selecting the BSIC decoding option displays BSIC value in a measurement window. BSIC threshold defines the minimum BSIC level that the scanner reports. Select the BCCH C/I check box to activate C/I measurements for the BCCH channel. This option is available with PCTEL GSM scanners only. By clicking the Select Channels button, you can access the Select Channels dialog. 4. By clicking the Select Channels button, you can access the Select Channels dialog.

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Figure 169 GSM Freq. Scanning: Select Channels 5. Select one band from the list or all of them. You can also select one band at a time and add the bands you want to scan. If all bands are selected, you have the possibility to select Remove All | ... items from every band. Alternatively, if only one band is selected you can remove only items from the current band through Remove All | ...items from current band. The Available view provides a list of channels that are available for scanning. To add channels to the Selected list, click on a number in the Available list and then click the Add button or simply double-click a channel to add it to the Selected list. To select all available channels for scanning, click the Add All button. An alternative method to select channels is to type the channel numbers in the field at the bottom of the dialog and to click Add. To remove channels from the Selected list, click on the channel you want to remove and then click the Remove button or double-click the channel. To remove all channels, click the Remove All button. You can select several channels simultaneously by holding down the SHIFT key and clicking on the channels you want to add or remove.  Note that Sample size and Data mode are not enabled with PCT GSM frequency scanning

6. After making the appropriate settings, click OK and OK again and go to online mode to start the scanning. 7. A green light on the scanner Device info window should start blinking. This means that the device is working properly and scanning using the default settings. 9/2/2011

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8. Click the Start Recording button to start recording the results in an output file. 14.3 TOP-N Pilot Scanning PCTEL - UMTS Unknown Pilot scanning can be used for scanning unknown pilots or the strongest pilots. The Unknown Pilot Scan will from now on be referred to as TOP-N Pilot Mode. 1. After the scanner is connected and activated in Nemo Outdoor, open the Measurement Properties dialog by selecting Measurement | | General Properties. 2. Go to the Pilot scanning page

Figure 170 UMTS Pilot Scanning Settings

CPICH Ec/No threshold defines the minimum level for the CPICH Ec/No. If the values are below the threshold, the pilots are not reported. Channel style refers to the style of the channel. Data processing method defines how the scanned data is processed by the scanner. In aggregate method, the sum of all peak pilot Ec/Io values above the PN threshold is calculated. If there are no peaks above the PN threshold, value -30 dB is returned for WCDMA. Pilot measurement mode defines the measurement mode for pilot scanning.  In High speed mode scanning speed is higher but sensitivity is lower. In high speed mode, weak pilots may be undetected. 

In High dynamic mode scanning speed is lower but sensitivity is higher.

Top-N check box enables/disables Top-N scrambling code scanning. If enabled, scanner will report results from N best scrambling codes. Number of pilots field defines how many pilots are reported by scanner in Top-N mode. 9/2/2011

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Time of arrival defines if the selected scanner will measure the time of arrival for each scrambling code. The time of arrival value is relative to GPS time and is measured in chips. Delay spread defines if the selected scanner will also measure the delay spread value (in chips) for each scanned scrambling code. Delay spread is determined as the difference between the last and first component to break the threshold set in PN Threshold. P-SCH defines if the selected scanner will measure the P-SCH Ec/N 0 value for each scrambling code. SIR (signal to interference ratio) defines if the selected scanner will measure the SIR value for each scrambling code. S-SCH defines if the selected scanner will measure the S-SCH Ec/N 0 value for each scrambling code. To select channels: 1. In the Measurement Properties, Pilot scanning, UMTS page, click the Top-N Configuration button. The Select Channels dialog is opened.  The table displays the channel numbers, not the frequencies. If you know the frequency but not the channel number, the channel number can be calculated by multiplying the frequency in MHz by five. The channel spacing is always 200 kHz. 2. Remove channels from the Selected list by selecting a channel and clicking the Remove button. 3. Add channels to the Selected list by selecting a channel from the Available list and clicking the Add button. With a PCTEL EX scanner a maximum of 15 channels can be selected in the pilot mode. With a PCTEL LTE EX scanner a maximum of 15 channels can be selected in the pilot mode. To select pilot parameters: 1. Check the TOP-N Mode check box. 2. Set the Number of scrambling codes value. This defines how many strongest pilots are to be reported by the scanner. The maximum is 32 pilots 3. To improve on the accuracy of radio propagation models, High speed mode makes it possible to acquire more samples (max 32 pilots per channel), while High dynamic mode offers fewer samples (max 16 pilots per channel) with a larger dynamic range

To set general parameters: 1. Data processing method defines how the scanner will process samples before reporting. 2. PN threshold defines the limit above which Ec/N0 peaks must go if Aggregated data processing method is used.

To select measured values:

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In Pilot Scanning Mode the RSSI is always measured for each channel. In Pilot Scanning Mode the P-CPICH Ec/N0 and RSCP are always measured for each scrambling code. 1. In the Measurement Properties, Pilot scanning page:  Select the P-SCH option to enable P-SCH Ec/N0 and RSCP measurement.  Select the S-SCH option to enable S-SCH Ec/N0 and RSCP measurement.  Select the Time of arrival option to enable time of arrival measurement.  Select the Delay spread option to enable P-CPICH delay spread measurement.  Select the SIR option to enable P-CPICH SIR measurement.  Select the Delay profile option to enable P-CPICH Delay Profile measurement. In TOP-N pilot scanning mode the scrambling code for delay profile measurement cannot be selected. 2. After making the appropriate settings, click OK and OK again and go to online mode to start the scanning. 3. A green light on the scanner Device Info window should start blinking. This means that the device is working properly and scanning using the default settings. 4. Click the Start Recording button to start recording the results in an output file.

14.4 LTE OFDM Scanning - PCTEL EX LTE OFDM scanning can be used for scanning Reference signal / Sync signals with a PCTEL LTE scanner and Nemo Outdoor. 1. After the PCTEL LTE scanner is connected and activated in Nemo Outdoor, open the Measurement Properties dialog by selecting Measurement | | General Properties. 2. By clicking the Advanced button, you will access the Advanced Properties dialog. Here you can enable and disable the integrated GPS receiver. This means you will not need an external GPS receiver in order to collect position data. 3. In the Measurement Properties dialog, go to the Pilot scanning page.

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Figure 171 LTE Pilot Scanning OFDM Setup Channel style refers to the style of the channel. Cyclic prefix defines the type of signal the scanner is set to measure. With Autodetect selected, the scanner will automatically detect the appropriate signal type. Data processing method defines how the scanned data is processed by the scanner. In aggregate method, the sum of all peak pilot Ec/Io values above the PN threshold is calculated. If there are no peaks above the PN threshold, value -30 dB is returned for WCDMA Sampling ratio option is available for PCTEL EX scanners only. The available options are 1:1, 1:2, 1:4 and 1:8. With ratio 1:1 all samples (Pilotscan events) are logged, with ratio 1:2 every second sample is logged, with ratio 1:4 every 4th sample is logged, and with ratio 1:8 every 8th sample is logged. By decreasing the sampling ratio you can decrease the output file size, but the scanning accuracy will be diminished. RSSI threshold determines a valid path (in dB). Subtracting the set value from a path with a maximum correlation value gives the lower limit of the valid path. Top-N check box enables/disables Top-N scrambling code scanning. If enabled, scanner will report results from N best cells. Number of cells field indicates the number of best cells you want the scanning to notify you of. Up to 16 sectors are reported with specific cell ID. CINR check box activates/deactivates Carrier to Interference and Noise Ratio measuring. Carrier refers to either reference signal power or sync signal power depending on the selected signal type. Time offset refers to the number of samples between P-SCH Primary Synchronization Signal arrival time with respect to receiver frequency reference that is derived from GPS reference time. Sync signal refers to the ratio between the synchronization channel, i.e., primary and secondary signal received power and the interference and noise from the same synchronization signal set.

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Reference signal refers to the ratio between the reference signal received power (RSRP) and the interference and noise from the same reference signal set. The Top-N Configuration button will open the Select Channels where you can select channels for pilot scanning. The maximum number of channels that can be selected is device specific.

4. When you select LTE channels, you can also define some channel-specific settings. In the LTE Channel Specific Settings dialog, select the channel from the Selected channels list and define the settings.  Note that the available options are device specific.

Figure 172 LTE Pilot Scanning OFDM Setup: Channel Settings Uplink-downlink configuration refers to LTE TDD frame structure. 15 How to set up and use Syncro Test Overview of Steps 1. Establish Remote Control Connection (Local Loopback, EVDO, UMTS, LAN or LTE) 2. Configure the Master Controller 3. Configure the Probe (LLDM, NEMO, etc.) 4. Load Test Cases into the Master Controller 5. If control connection is not Local Loopback, run continuous DOS ping of the Probe’s IP Address from the Master Controller. Use the Ping button on the Probe to initiate continuous ping of the Master Controller’s IP Address from the Probe. 6. With ping running both ways, register the Probe on the Master Controller, by pressing the Register button on the Probe. Once Probe is registered, stop the pings and go to the appropriate steps below. 7. On the Probe, establish LTE Connection 8. On the Probe, start LLDM, then WINDS. 9. On the Master Controller, select the appropriate test case to run. 10. On the Master Controller, start the test

15.1 Establish Remote Control Connection For EVDO or UMTS control connection, use the appropriate connection manager to establish connection on the Master Controller. A sample connection manager for LTE is shown in Figure 173. In this example, one

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would click on Connect WWAN to establish connection.

Figure 173 Verizon Access Connection Manager

15.2

Configure Adapters to Avoid Conflicts 1. On the Probe, with the UE plugged in but before establishing LTE connection for the first time, a. Select Network Connections from the Control panel b. Highlight the LTE connection and select properties to see the picture in Figure 174. c. Highlight Internet Protocol (TCP/IP) as shown in Figure 174.

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Figure 174 Local Area Connection Properties

Click on Properties and see the screen as in Figure 175

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Figure 175 Internet Protocol Properties

Click on Advanced and see the screen as in Figure 176.

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Figure 176 Advanced TCP/IP Settings

Uncheck Automatic metric and enter “1” as shown in Figure 177. Click OK

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Figure 177 Advanced TCP/IP Settings (2) This is necessary to resolve conflicts between EVDO/UMTS and LTE connections. 2. On both Master Controller and Probe laptops, disable all other connections (LAN, 1394). Leave only the EVDO/UMTS and LTE connections active. 3. If Control is over LTE connection, use the appropriate connection manager to establish connection on the Master Controller. Do the same on the Probe. Follow all the other steps stipulated for EVDO connection. 4. If Control is over Local Loopback, no connection is necessary. Instead, select the MS-TCP-Local Loopback from the Adapter pull-down menu shown in the next page, for the Master Controller, and the Probes page, for the Probe. 5. After establishing both connections, verify internet accessibility by pinging yahoo.com or a similar website on each of them. 6. Once internet accessibility has been verified, the Probe operator should obtain the IP address of the Master Controller from the Master Controller’s operator, and provide the IP address of the Probe to the Master Controller’s Operator. 7. From the Master Controller, perform a continuous DOS Ping of the Probe’s IP Address (Ping –t “Probe’s IP Address”)

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15.3 Configuring the Master Controller Control panel Start the Master Controller. From the pull-down menu of Options screen (select Tools, then Options to see the screen below), select the correct adapter based on the type of Remote Control connection established (Verizon Wireless – VZAccess is shown in Figure 178)

Figure 178 Syncro TestMaster Controller Options This completes the configuration of the first of the four panels (Control). The configurations of the remaining 3 panels are shown in the following pages.

15.3.1 Testing Panel Normally, there is nothing to change on this panel. However, detailed description of each of the items is available in Syncro Test Users Guide manual. The box for “continue testing if some probes fail setup” is useful while performing mutli-UE tests. It allows the test to continue even if one of the probes fails test setup.

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Figure 179 Testing Panel

15.3.2 Log Data Panel The log files can be sent to different locations with the following settings:  To leave the log files (test results) on the Probe for later upload or manual retrieval, select Don’t Send.  To transfer the log files back, select one of the two options – TCP or FTP. TCP transfers the results directly to the Master Controller Laptop (the directory shown below). o FTP allows transfer of the result to another FTP Server. When it is selected, the spaces for entering details of the FTP Server - FTP Server IP Address, Path Prefix, the type of login, open up.  All Probes Upload Simultaneously checkbox is for multi-UE tests. Selecting it allows test results from all UEs to be uploaded at the same time. Otherwise the results are uploaded sequentially.

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Figure 180 Data Log Panel

15.3.3 Snapshot View Panel Select the control adapter and rate of screen refresh for registered Probes. The OK button is activated only after this panel is configured.

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Figure 181 Snapshot View Panel

15.4 Configuring Probe (LLDM, NEMO, etc.)

15.4.1 LLDM Probe Start the Probe and select Tools, Options

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Figure 182 Syncro Test LLDM Probe

15.4.2 Syncro Test LLDM Probe Options In Probe ID box, enter the unique ID for the probe (this can also be done from the Master Controller). In Control box, select the appropriate network Adapter (Verizon Wireless – VZAcces is selected below). Normally, no changes are necessary in Log Data box. However, details are available in Syncro Test User’s Guide.

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Figure 183 Syncro Test DMDS Probe Option Once the options are configured, click “OK”. 15.4.3 Verify connectivity of Probe to the Master Controller

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Figure 184 Syncro Test Ping Ping the Master Controller continuously until response is obtained.

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Figure 185 Register the probe

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Figure 186 Probe is registered 15.4.4 Load Test Cases into the Master Controller In the Master Controller, select File, Load Predefined Tests…

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Figure 187 Open Predefine Tests Click on Predefined Tests, select the test group. From the group, select the particular test of interest (WABA_1_1_7_10M_UL_DL_FTP) as shown in Figure 188.

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Figure 188 Select Predefined Test 15.4.5 Select the test to run on each UE On the Master Controller, select the UE; then select the test to run.

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Figure 189 Multiple Tests for Probe For multi-UE probe, select a test for each UE. For single UE per probe, only 1 UE will show in UEs column in Figure 190.

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Figure 190 UE 1 Test Selection Example

16

Data Collection Procedure

16.1 LLDM Data Collection Software LLDM is a data collection software provided by LG corporation. It should be used in conjunction with LGE Connection Manager, and the UE driver. You can download LLDM, Connection Manager, and the Driver from: https://wcdma-ll.app.alcatel-lucent.com/livelink/livelink.exe? func=ll&objId=57119978&objAction=browse&sort=name&viewType=1 To Install LLDM Note: LLDM and LG Connection Manager should be pre-installed and licensed in the LTE RF Toolkits. Install LLDM and LG Connection Manager if they are not in your computer or if there is a newer version.  To install LLDM, double click on the LLDM_XXX_.exe file. XXX is related to the version number.

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 After installing LLDM, click Start, click Programs, click LLDM, and click LGE_LLDM_PCSerialChecker to obtain a string of data.  Copy the string and write to Vern Bean to get a zipped license file.  When you receive the zipped license file, unzip it, and put the unzipped license file in the LLDM installation folder under c:/program files/lge/lldm.  Click Start, click Programs, click LLDM, and click LLDM to activate LLDM. To Install Connection Manager  Unzip LG_Test_CM_XXX.zip XXX is the version number  Double click on setup.exe Install Driver  Unzip LGLTEUSBDrivers_XXX.zip XXX is the version number  Connect LGE ADRENALIN UE to the PC USB port. If one USB cable cannot provide enough power, you can connect the ADRENALIN to a Y cable and connect the 2 USB connectors of the Y cable to 2 USB ports of the PC.  Double click on LGLTEUSBDrivers_XXX.exe Click Start, click Programs, click LLDM, and click LLDM. Connect ADRENALIN to the PC USB port as shown in Figure 191.

Figure 191 ADRENALIN

: .

 On the Data Collection PC, click Start, click Programs, click LLDM, and click LLDM.  In the LLDM window, click Set Up, and click Set Comport to display the Port Setting window as in Figure 192.

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Figure 192 Port Setting  In the Port Setting window, click the Device tab, and check the Comport button.  In the Comport window, check CH1 if you only optimize 1 channel.  In the Port drop-down box, select the port number associated with LGE LTE DM Port. You can refresh the port settings by clicking the  Plug the GPS in a USB port.

button.

 Click the GPS tab, check the GPS box. Click to refresh. In the Port drop-down box, select the port associated with GPS.  When finished, click OK to complete the configuration process. You will see the received signal displayed in a screen as in Figure 193.

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Figure 193 LLDM In the Desktop click the LGE CM icon to activate LGE Connection Manager. The CE screen will be displayed as in Figure 194.

Figure 194 LG Connection Manager In the LG Command Manager window, the red C represents CDMA signal, the red L represents LTE signal. Click CONNECT to start the attachment process.

16.2 Syncro Test Syncro Test consists of two pieces of software: The Master Controller that resides in the Master Controller PC, which could be the Data Analysis Tool (DAT) PC, and the LLDM Probe that resides in the Data Collection PC. The engineer can sit in the office and use the Master Controller to control the LLDM Probe which controls the data source and LLDM logging. Both the Master Controller and the Probe can reside in the Data Collection PC (by selecting MS-TCP-Local Loopback in Remote Connection). If both of them reside in the Data Collection PC, the data collector can use the Master Controller to run the predefined test cases. If the Master Controller and the Probe reside in two different PCs, the RF engineer in the office can use the Syncro Test Master Controller to control the Syncro Test Probe in the van to direct the LLDM to collect the predefined tasks. This section provides information to help you set up the Syncro Test Master Controller and to perform the data collection tasks. Note: When running the Syncro Test Master Controller the first time, the PC needs network connection in order to verify the login information. Syncro Test can be downloaded from https://sps.na.alcatel-lucent.com/sites/Services.Services_Tools/Syncro Test/default.aspx The username and password can be obtained by writing to [email protected] 16.3 For Data Collector in the van:     

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In the Data Collector PC, physically connect LG UE to USB port of the Data Collector PC. In the Data Collection PC, click Start, click Programs, click LLDM, and click LLDM to start LLDM. Click Set Up, click Devise Tab, and check Channel 1. In Port drop-down menu, select LTE DM Port, and click OK. The L1 graph of LLDM will display the signal as in Figure 195.

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Figure 195 L1 Graph of LLDM  In Windows, click Start, click Programs, click LG LTE CM, and click LG LTE CM. A Communication Manager window as in Figure 196 will be displayed.

Figure 196 LG LTE  Click Connect to start the attachment process. Once attached, the LG Connection Manager screen will be changed to one like Figure 197.

Figure 197 LG ADRENALIN Attached  In the Data Collector PC, in Windows, click Start, click Programs, click Alcatel-Lucent, click Syncro Test, and click LLDM Probe to display Syncro Test LLDM Probe as in Figure 198.

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Figure 198 Syncro Test LLDM Probe and Syncro Test DMDS Probe Options  Click Tools, and click Options to display Syncro Test DMDS Probe Options as in Figure 199.

Figure 199 Syncro Test DMDS Probe Options  In the Syncro Test DMDS Probe Options window, fill in the boxes. The meanings of the labels are as follows:

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Probe ID: Name of the probe at the Master Controller. We recommend you set the ID to something meaningful that uniquely identifies the probe or its location, like Sandy. Probe ID can also be changed from Master Controller. Heartbeat Interval: Interval in seconds that a heartbeat is sent. Control Adapter: In the selection box, select Wireless Connection or MS TCP Loopback. Control Server Address: IP address of the DAT PC where the Master Controller resides. Use Control Adapter For Log: Check this box. Test Targets (WINDS & FTP Server): Leave blank. Probe Log Folder: Folder that the probe stores its log data. WINDS Log Folder: Folder that WINDS logs are written to. Auto Register: If checked, the probe will auto register when run. Auto-Resize Controlled Application: If checked, the probe will auto resize the applications it controls to fit everything on the screen.

 Click OK to complete and close the Syncro Test DMDS Probe Options window, all the fields in Syncro Test LLDM Probe window will also be populated. In the Syncro Test LLDM Probe window, click Register. The LLDM Probe will be registered with the

Master Controller.

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16.4 For Remote Control or Local Control     

In Windows, click Start, and click Run. In the Run box, type cmd, and click OK. In the cmd window, type ipconfig, and press Enter in the keyboard. In the cmd window, copy IP address of the PPP adapter. Call the Data Collector in the van and tell him the IP address of the DAT PC.

After the data collector has pressed the Register button in the Syncro Test LLDM Probe window, the RF Engineer will be able to conduct tests and log them from the Syncro test Master Controller window in the DAT PC (using Wireless Connection) or in the Data Collection PC (using MS TCP Loopback). The procedures are as follows:  In the Syncro Test Master Controller, select File|Open Predefined Tests as shown in Figure 200 below.

Figure 200 Opening Predefined Tests

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Click Tools, and click Options to display the Syncro Test Master Controller Options window as in Figure 201.

Figure 201 Syncro Test Master Controller Options  In the Control Tab, in the Adapter box, select the appropriate network adapter. Click the Log Data tab to display the screen as in Figure 202 :

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Figure 202 Log Data tab  In the Log Data Tab, fill in data as follows: o If you do not want Syncro test to send the log data from the Probe PC to the Master Controller PC via the non-LTE data network (EVDO), chick Don’t Send. o If you want the log data to be sent via TCP to the Master Controller PC, check TCP, and provide the path to the folder in the Master Controller PC where you want the log data to be sent. The data will be sent to C:\SyncroTest\Data on the Master Controller, by default. o If you want the log data to be sent via FTP, check FTP, and provide the FTP server information. o In the Logging on Probe window, in the Log Folder box, provide the address of the log data folder in the Data Collector (LLDM Probe) PC.     

In the Syncro Test window, in the Name box, fill in the name of the test. In the Far End Address box, supply the IP address of the WINDS server. Click File, and click Load Predefined Tests to load the test cases you have pre-defned. Click Predefined Tests, select the test case you want to conduct. After the Syncro Test LLDM Probe is registered with the Syncro Test Master Controller, you can see the screen of the Data Collector PC by clicking in the middle of the Syncro Test Master Controller window, and you will see screen image as in Figure 203.

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Figure 203 Snap Shot View    

In the Master Controller window, click Start Logging to start logging the messages. Click Start Test to start the test. Syncro Test will start the test for the duration specified and stop when the test duration expires When done, click Stop Test (which was changed from Start Test) if you want to stop before the duration expires.  Click Stop Logging (which was changed from Start Logging),

17 How to use eDAT An engineer can use eDAT to analyze the KPIs that fall outside of the normally acceptable range. eDAT can help identify the area of improvement by allowing you to:  Identify the geographic area where the problem occurs.  Plot several KPIs geographically and temporally side by side  Filter the data according to multiple sets of conditions.  Look at the messaging between the eNodeB and the UE.  Filter the messages that meet the pre-defined conditions. After you have identified the problem area, you can refer to the Optimization Guideline and the RF Troubleshooting Guideline for further guidance.

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17.1 Download and Install eDAT  Before installing eDAT, you should get your username and password by writing to [email protected]  eDAT software can be downloaded from: http://navigator.web.alcatel-lucent.com/ 17.2 Create a Project  In eDAT, all the related data are collected under Project folders.  Click File, click New.  In the Select the files to add to the project window, select the data files and their paths. The files that eDAT can import include: o Drive test data file (dml file collected using LLDM, nmf file collected with NEMO, and others) o WINDS file (ftp or udp application and session measurements) o EAT file o Zip file that contains the above mentioned files in Winzip format.  After you have selected the files, click Open to continue.  If you have more data to add to the Project, click File, and click Add Data to Project1.  After having imported all the files, click File, and click Save Project1 As ..,  In the Save Project1 as .. window, select the proper folder. In the File name box, supply the project name, and click Save. 17.3 Open an existing Project If you have already created a project, you can open it as follows:  Click File, click Open, in the Open window, select the proper folder that contains the interested eDAT project.  In the File name drop-down box, select the eDAT file, and click Open. 17.4 Add Data to an Existing Project After you have created a project, you can add data to it as follows:  Click File, click Add data, and click the Project to which the data will be added.  In the Select the files to add to the project window, select the proper folder and the files to be added.  Click Open to complete the process. 17.5 Study: Examining and Aligning Data Files A study is a group of data, usually collected during the same drive test. You can see the beginning time and ending time of the files in the study. Sometimes the files are mismatched because the data collection computers are not synchronized. eDAT provides you a function to align the mismatched files. To examine the beginning and ending times of the files, please follow the steps below:  Click the Projects tab to display the Projects window.  Click the button to un-hide the Projects window.  In the Study section, the different types of data associated with the study are presented in different rows.  In the time section (section in the right), you can find the begin time and end time of the data file by moving the cursor to the file object. Figure 204 depicts the beginning and ending times of different files in the study.

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Figure 204 Type and Timing of Files in Study To align the files, see the following example:  Right click on the file you want to change (WINDS file), click Align Journal To, click the project name (Project1), click the study containing the file you want to align to (Study1), and pick the file you want other files to align to. Figure 205 depicts the alignment process.

Figure 205 Aligning the Files  Figure 206 depicts all the files are aligned.

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Figure 206 Aligned Files To Reset the file to its original starting time, right click file icon (in this example, WINDS file icon as in Figure 206), and click Reset Starting Time. 17.6 Create Cell location files (LCAT) eDAT can create cell location file (LCAT) from either system snapshot (xcm) or from .csv file. eDAT can automatically create an lcat file from the system snapshot (xcm file) generated by the WMS or SAM. Below is the procedure to create an lcat file by importing a system snapshot. From File menu, click Cell Info and select Import into Project link as presented in Figure 207.

Figure 207 Import Cell Info Select the xcm file for the Market SnapShot you would like to import. Save your project. This will automatically import and display the cell sites into the project. An alternate method would be to create an csv file using he sample format below: 9/2/2011

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Sample lcat file.csv

And then follow the above procedure to import the csv file instead of xcm file into the Project. You can hide and un-hide the cells by clicking the

button.

17.7 Default Views of Metric and data  After having created or having opened a project, in the Metric window, you will see many folders containing different categories of data.  When you open a folder, you will find different types of data with different binning methods (Spatial binning, Temporal binning). For unbinned data, right click on the Spatial or Temporal binning plots and select unbinned data. Please be aware that due to the sheer volume of unbinned data, eDAT could slow down significantly and even crash.  You can also look at the data in different perspectives: Map, Scatter, Histogram, and Grid. Moreover, you can export the data in CSV format. Right click the data file to open a new window for you to select different forms of data presentation as in Figure 208.

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Figure 208 Different Presentation FormatsUn-binned data 17.7.1 Un-binned data The data is presented in its native form. 17.7.2 Temporally binned data The data is binned according to time. You can change the bin size as follows:  In the eDAT window, click Tools, click Options.  In the Options window, click Project,  In the Binning box, change the Temporal Binning Size, and click OK. See Figure 209 for more information.

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Figure 209 Adjust Binning Size

17.7.3 Spatially binned data The data is binned geographically. You can change the bin size by following the similar steps as described in “Temporally binned data” section above. 17.7.4 Scatter Plots Scatter Plot displays the data with value on the Y axis and time on the X axis. is an example of Scatter Plot.

Figure 210 Scatter Plot 17.7.5 Histogram Histogram displays the data with the value intervals on the X axis and the frequency of occurrences in the Y axis. Figure 211 is an example of a Histogram.

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Figure 211 Histogram eDAT offers the functionality to compare multiple drive test results by adding a histogram from another open project to an existing plot. 17.7.6 Grid Grid displays all the data in a table format. Figure 212 is an example of Grid. This data can be exported into a csv file.

Figure 212 Grid 17.7.7 Maps  When you click the Map the first time, eDAT will ask you if you want to download the appropriate street map: local map, state map, or country map. Please select the maps just big enough for your analysis. Selecting maps that are bigger than required will increase processing time.  Providing username and password: When eDAT asks you for the username and password, supply the same username and password that NavigatorHelp provided you to install eDAT.  eDAT will automatically download the selected maps from the server to your local PC.

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 Google Map and Bing Map can also be downloaded. However, you need to first obtain an account ID and passwords from these two companies.  A sample map is displayed in Figure 213.

Figure 213 Map 17.7.7.1 Show eNodeB sites To hide and un-hide the eNodeB sites and cell azimuths, click

in the Tool bar.

17.7.7.2 Zoom in and Zoom out There are three ways to zoom in and zoom out:  Double right click and double left click  Mouse wheel-up, and mouse wheel-down  Use the

and

from the tool bar

17.8 Change Appearances 17.8.1 Fixing Legend window You can display and move the legend as follows:  Move the cursor to the Legend tab, the Legend window will drop down.  Quickly move the cursor to the right top corner of Legend window and click .  Now, you can re-size the Legend window and move it to the location you want. 17.8.2 Changing bin size You can change the bin size (temporal and spatial only) as follows:  Right click in the Legend window  In the Bin Size box, change the bin size (temporal units are in seconds, spatial units are in meters) 17.8.3 Displaying labels You can display the label metrics in the map as follows:

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 Right click in the Legend window  Click the

button.

17.8.4 Changing Themes If the default legend settings do not fit your need, you can change them by following the example below:  In Figure 214, the granularity between 5 and 20 is too rough; and you want to make them finer.

Figure 214 RS SNR Map  Click Tools, click Options.  In the Options window, under your project name, click Project to display a window as in Figure 215.

Figure 215 Options

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 Click Theme Set, and click

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to display Edit Themes window as in Figure 216

Figure 216 Edit Themes  In the Search Box on the top left corner next to the + symbol, type in the exact name of the map of which legend you want to change, and click Enter on the keyboard. The name of the map should be highlighted in the tree below.  In the right pane, in the middle column, key in the new values, click OK, and click OK.  In eDAT window, close the map (in this case, RS SNR).  In eDAT window, double click RS SNR (Temporal) to display the map with new legend as in Figure 217.

Figure 217 Map with new legend

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17.9 Multi-Metric Map View 17.9.1 View several metrics in the same map – View Synchronization To help find the underlying cause of an event or a metric, you can look at several metrics side by side as in Figure 218.

Figure 218 Multi-Metrics Plot The steps to create a Multi-Metrics Plot are as follows:  In the Metrics window on the left, expand a folder by clicking next to the folder, click on the map icon of the desired temporal metric (right click on the metric if the map icon is not under the folder). A map will be displayed.  In the Metric window, expand another folder, click and drag another map icon to the map pane. The map pane will have 2 metrics displayed.  Continue the same process to display more metrics.  Click the Legend tab to display the legend. To adjust the relative positions of the metric symbols, do the following:  Click Tools, click Options, click Project, click Figure 219.

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Figure 219 Per Metric Offset  Change the relative positions of the two metrics in X axis and Y axis, and click OK.  Close the maps and reopen them to apply the changes. 17.9.2 Multi-Metrics Grid View Similar to Multi-Metrics Map View, You can view several metrics at a glance. The procedure is as follows:  In the Metrics window, expand a folder, click on the grid icon of the desired metric (right click on the metric if the grid icon is not under the folder). A grid will be displayed.  In the Metric window, expand another folder, click and drag another grid icon to the map window. The grid window will now have 2 metrics displayed.  Continue the same process to display more metrics.  A sample of Multi-Metrics Grid display is presented in Figure 220.

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Figure 220 Multi-Metrics Grid

17.9.3 View Map and Grid To view the Map and its corresponding Grid messages, do the following:  In the Metrics window, expand a folder by clicking the next to the folder, click a map icon to display a map (if the map icon is not under the folder, right click the metric, and click the map icon).  In the expanded folder, click the grid icon to display the grid (if the grid icon is not under the folder, right click the metric, and click the grid icon).  If you want to display more metrics in the grid, drag another metric to the grid window.  In the eDAT window, click Window, click New Horizontal Tab Group, the two metric windows will be arranged as in Figure 221.

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Figure 221 Map and Grid Windows

 If you want to see the corresponding location of a particular data point in the map, in the Grid window, move the cursor to the left-most column i.e. the message number (the shape of the cursor changes to a



horizontal arrow), and click. The corresponding point in the map window will change to . If you want to see the corresponding time or value of a point or a set of points in the map, do the following: o Click the map window, click , move the cursor to the interested point and drag over a group of points. o The corresponding rows in the grid window will be grayed out.

It is also possible to play the file, from Play menu and select the speed needed, and that will cause the cursor to move along the bins and down the Grid ( or Messages) rows as depicted in Figure 222.

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Figure 222 Playing File 17.10 Filters There are two ways to filter the data: Exclude all data that does not meet the RSRP threshold or SNR threshold; Exclude other types of data. 17.10.1 Excluding data not meeting RSRP or SNR thresholds In some projects we only have to optimize the area with RF coverage. The coverage is usually defined as an area where the RSRP is greater than threshold A, and the SNR is greater than threshold B. This section describes how to filter out the data that do not meet the RSRP threshold or the SNR threshold.  Click Tools, click Options to display window as in Figure 223. Click LTE.

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Figure 223 Statistics  In the Statics section, Under Applying Statics Filtering, click Applying Statistics Filtering, in the dropdown search box, select True.  In the RSRP Threshold box, fill in the RSRP value under which the data will not be used for analysis calculations.  In the SNR Threshold box, fill in the SNR value under which the data will not be used for analysis calculations.  Click OK to enable eDAT to filter out the data that do not meet the threshold criteria.  The Threshold section allows you to exclude all the data that does not meet the threshold. You can use this to filter out the data below the noise floor by setting the RSRP Threshold to noise floor. 17.10.2 Filtering with other criteria To filter other data, please see the illustration in Figure 224 and follow the explanations below:

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: Figure 224 Filter  In the Map screen, click the Filter tab.  In the Filter window, select: o Filter, then Keep: You first use filter criteria to eliminate a part of data, and then take a percentage of the remaining. Or o Keep, then Filter: You first keep a percentage of data, then use filter criteria to eliminate another portion of the data.  In the next box, select whether you want to keep the All, Max, or Min percentage of the data.    

Click to add another filtering criterion. Select the criterion you want to use for next level of filtering. Select the operant and the threshold. When you are done with defining the filtering criteria, click Apply.

17.11 Messages (Message Explorer) To display the messages exchanged between the UE and eNodeB, do the following:  Click View, click Message Explorer, and click the Study for the data you want to examine. 17.11.1 Text Search To find the messages that you are interested in, do the following:  In the Tool Bar, click

to display the Find window as in Figure 225.

Figure 225 Find Window

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 Fill in the blanks and click Find to find the next occurrence. Click occurrence.

or

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for the previous and next

17.11.2 Message Groups If you want to see the occurrences of a message or a group of messages, you high-light them as follows:  In the eDAT window, click View, click Message Explorer, and click the Study you want to look at.  In the eDAT window, click Tools, click Options to display the Options window as in Figure 226

Figure 226 Options  In the left window, click Application (Under Default)  In the right window, click Message ID Groups and click to display a blank Message ID Group Collection Editor window  In the Message ID Group Collection Editor window, click Add to display the Message Group collection Editor window as in Figure 227.

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Figure 227 Message ID Group Collection Editor  In the right Misc window, click and type in a new name.  Click Message, the  Click

icon will appear at the right end of the line.

to display a window as in Figure 228

Figure 228 Message IDs Window

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 Check the boxes with the messages that you want to highlight. In the Background Color drop down box, select the background color you want for the message. Click OK 3 times to return to the message window.  Depends on the eDAT version, you may have to close the Message window and re-open it for the new grouping to take effect.  The screen shot of the message window with Up Link Grant, Down Link Grant, and Channel Info highlighted are displayed in Figure 229.

Figure 229 Message Group

17.12 Reporting EDAT comes with some standard reports. In the bottom of the left window, there are 3 tabs: Metrics, Reports, and Delta Metrics. Click Reports tab to display the reports available for the data in the current study. Samples of some report titles are in Figure 230

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Figure 230 Sample Report Titles A Sample Report is in Figure 231.

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Figure 231 Sample Report

18 How to detect problems and how to fix them Cleaning the PCIs and neighbor lists are probably the most effective steps to improve LTE RF performance. Good PCI assignment reduces call drops by enabling UE to clearly distinguish one cell from another. Good neighbor list is important because without it, calls will drop when UEs cross cell coverage boundaries. After sector tests and before conducting any other optimization procedure, the RF engineer should make sure that:  The PCIs are placed as far apart as possible  There is no first tier neighbors or second tier neighbors assigned the same PCI  Neighbors are reciprocated  There is no missing neighbor 18.1 Maximize distance between co-PCI cells For LTE, there are a total of 504 unique PCIs. Each cell is assigned a PCI. If there are more than 504 cells, the PCIs have to be re-used. In order to minimize confusion, the co-PCI cells should be as far apart as possible. The procedure to check the co-PCI cell distances are as follow:  In SAM, take a snapshot of the network.  In eDAT, click File, click New Project, select the snapshot, and click Open.  In the bottom of the left pane, click Statistic tab.  

Click next to Cell icon to expand. Click LTE Co-PCI Cells to display the distances between the Source Cell and the Target Cell as in Figure 232. Click the Distance cell to sort the pairs by distance.

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Figure 232 Co-PCI Cells 

For the co-PCI pairs that are too close together, change the PCI of one of the cells and re-check the distance between the co-PCI cells.

18.2 Eliminate Co-PCI neighbors If either the first tier or second tier neighbors have the same PCI, the UE cannot distinguish the source of the reference signal. Therefore, the RF engineer should re-assign the PCIs to avoid this from happening. The procedure to check the co-PCI neighbors is as follows:  In SAM, take a snapshot of the network.  In eDAT, click File, click New Project, select the snapshot, and click Open.  In the bottom of the left pane, click Statistic tab.  

Click next to Cell icon to expand. Click LTE Co-PCI Neighbors to display the Co-PCI second tier neighbors as in Figure 233.

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Figure 233 Co-PCI Neighbors In Figure 233, in the example enclosed by the green box, both cells 098126_3 and cells 098018_3 are the neighbors of cell 102373_1, and they both have the same PCI. The PCI of one of the cell should be changed to avoid confusion to the UE. 18.3 Neighbor Reciprocity The Neighbor Reciprocity function identifies the cell that is a neighbor of another cell, but the other cell is not a neighbor of the interested cell. The procedure to identify neighbors with no reciprocity is as follows:  In SAM, take a snapshot of the network.  In eDAT, click File, click New Project, select the snapshot, and click Open.  In the bottom of the left pane, click Statistic tab.   

Click next to Cell icon to expand. Click LTE Reciprocity Neighbor List Alert to display the non-reciprocating neighbors as in Figure 234. In this figure, Target Cells are neighbor cells of Source Cells; but Source Cells are not neighbor cells of the Target Cells. You should create a WPS work order to add the Source Cells to the neighbor lists of the Target Cells.

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Figure 234 LTE Reciprocity Neighbor List Alert

18.4 Missing Neighbor Neighbor List based on cluster drive data. This approach complements the prediction based neighbor list with measurement data. The basic idea is that if the cells of which RSRP are detected together in a large amount of bins should be considered as neighbors. It is recommended to run a drive test that covers all the cells within a cluster and its surrounding cells to collect data to support this activity. The procedure is as follows:  In SAM, take a snapshot of the network  Collect drive test data.  In eDAT, click File, click New Project, select the drive test file and the snapshot, and click Open.  In the bottom of the left pane, click Statistic tab.  

Click next to LTE-Coverage Overlap Analyser to expand Click Coverage Overlap Analyser to display the analysis as in Figure 235.

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Figure 235 Coverage Overlap Analysis 

In Figure 235, let us look at the example enclosed in the green box. Cell 100250_2 and cell 100029_3 were 5637 meters apart; and they were not neighbors. The RSRPs of both cells were recorded in 82 bins which is 32% of total number of bins covered by Cell 100250_2, the source cell. Because of this heavy overlap, these two cells should be assigned as neighbors.

18.5 Drop call Scenario – No Handover Command Received When UE sends measurement report to source cell, there should be Handover command sent to UE by the source cell to complete the Handover successfully. If the UE does not receive Handover Command, the call would stay on source cell and drop Serving cell 14 – UE sends Measurement Report (MR) for cell 350 but no Handover command. Please check if this is a case of missing cells

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18.6 Drop call Scenario – missing Neighbor contributed to 4 repeated drop calls Serving cell 488 has missing neighbor cell id 73 and cell id 277

18.7 RACH ISSUE Serving Cell id 360 - UE sends measurement report (MR) for cell id 169. UE receives Handover command but call drops after T304 (Handover failure) timer expires.

RACH 1probes eNodeB every 20 ms. RACH2 (Rach1 response) opportunities should be 5 TTI’s after each probe. Instead RACH2 is coming 15 TTIs after each probe. Problems were due to UE bug.

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RACH1

RACH2

18.8 Identifying Pilot Polluted Areas Pilot pollution refers to degradation in performance due to interference from common pilots sent by neighbor cells. A common pilot may be a cell-specific reference signal used for demodulation and decoding, a synchronization signal used for cell acquisition, etc. Any area where the number of pilot is within 6dB of the dominant pilot is a polluted area. Most often this polluted areas leads to drop calls. Antenna physical changes either through mechanical down tilts, azimuth changes, antenna re-orientation, pilot power reduction and antenna heights reduction might help to mitigate the problem.

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All the circled areas are polluted areas. Most of the areas ended in drop calls as can be seen below and Handover failures on the next graph. UE is seeing too many pilots with equal strength and no dominant pilot.

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18.9 Call drop scenarios in the Handover regions

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18.10 Handover Parameters and Recommended Settings All Handovers in LTE are essentially Hard-Handovers. There are a set of criteria and associated HO parameters for filtering physical layer measurements at layer 3 and parameters for HO trigger. Extensive set of HO parameters under eNodeBs control are communicated to UE via signaling messages at the RRC layer. These help to optimize HO performance in terms of HO rate, ping-ponging, success rate, throughput and BLER performance in the Handover region. UE has control over physical layer measurements, so some dependency on UE implementation. 3GPP defines a set of events applicable for one or more HO types. e.g eventA3 for intra-freq intra-LTE Handover e.g eventA2 and eventB2 for inter technology Handover (LTE to UMTS) Event A3: Serving and Neighboring cell must meet the entry criteria for a neighboring cell to be considered for inclusion on Measurement Report ENTRY: Neighboring_signal – Hysteresis > Source_signal + eventA3offset Above condition must be met for timeToTrigger interval before MR will be triggered

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Key Handover Parameters 1. Hysteresis/eventA3offset  Signal comparison thresholds between serving and neighboring cells for UE to trigger MeasurementReport for Handover  Signal can be in terms of RSRP or RSRQ  In general, filtered signal for a neighbor must exceed that of serving cell by the combined [hysteresis + eventA3offset] amount for the UE to trigger MR 2. timeToTrigger  once a neighboring cell meets eventA3 entry criteria, it must hold the criteria for timeToTrigger duration before MR is triggered  In simple terms, it is the hold time before UE will trigger MR for a stronger candidate cell  Can also be viewed as time hysteresis 3.

FilterCoefficientRSRP/RSRQ Applied at L3 filter output of L1 signal measurements Controls how fast a neighbor cell can meet the eventA3 criteria In general, filtered signal for a neighbor must exceed that of serving cell by the combined [hysteresis + eventA3offset] amount for the UE to trigger MR  3GPP requires UE to adapt filter coefficient to preserve filter characteristics assuming T=200ms; L1>L3 reporting rate   

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4. Parameter Recommendation

5. Handover Parameter Optimization Impact

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6. Additional HO related parameters  cellindividualOffset o impacts eventA3 entry criteria o Allows altering effective HO hysteresis in a certain direction for a given serving cell -> neighboring cell pair o Can be useful for local area optimization, careful about NL transmission impact o Default recommendation: 0 dB  

maxReportCells o Max number of cells reported by UE on the MR o Default recommendation: 1=> UE will report only the strongest neighboring cell S-Measure o UE will look for neighboring cells only if the serving cell RSRP falls below this threshold o Default recommendation: -43dBm



reportingAmount/reportingInterval o After the first MR sent, successive repeats at the RRC layer are controlled by these two parameters  reportingAmount constrains the number of MR repeats  reportingInterval governs the spacing between MR repeats o Per 3GPP, the earliest a Handover can be setup is after SecurityMode is completed during an Attach or idle to Active setup  However, UE is allowed to send MR as soon as it can  Repetitons help ensure eNB sets up HO right after SecurityMode is completed, reflecting most recent RF conditions o reportingAmount/Interval apply to same set of neighbor cells  As part of multiple repeats, UE can update RSRP info for the same reported cells  If a new neighbor shows up, MR count is reset and can be sent right away o Recommendation: r8/ms240



eNB will attempt to perform HO to the neighboring cell reported on the eventA3 based MeasurementReport o No signal comparison done at the eNB – UE’s check is sufficient

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If maxReportCells set to greater than 1, eNB will take the first neighbor cell on the list – according to 3GPP, UE must rank the reported neighbors on the MR per signal strength (strongest cell first)



If a new MR received while the first one in progress, eNB will abort the current HO evaluation and process the new MR unless HO command already sent out



Unlike CDMA/EVDO or WCDMA, no need for transmitting Neighbor Lists to UE in LTE o 3GPP requires UE to be self-sufficient in terms of detecting neighbors without eNB’s assistance o However, a neighbor relationship must exist in the cell for it to process HO request



Regardless of the below HO types, same eventA3 trigger criteria apply o Intra-eNB HO o X2-based inter-eNB o S1-based inter-eNB HO

7. Timers for Handover failures / drops  Several timers / mechanisms exist in the database file that influence HO failure rate / dropped calls o T304: Successful transmission of HO confirm (RRC Connection Reconfiguration Complete) following receipt of HO Command. Recommendation: ms2000 o

dsrTransMax: Max number of Scheduling Requests (SR) UE will send to request an UL grant before declaring SR_Max failure. UE not receiving UL grants could be due to DL issues (weak DL SINR) or UE running out of UL coverage. Recommendation: n64

o

T310: DL physical layer break-down (out-of-sync indication within UE’s lower layers). Recommendation: ms1000

o

timeAlignmentTimerCommon / Dedicated: UE must receive a Time Alignment (TA) update within this interval, else declares TA failure. Recommendation: 2560ms

o

maxRetxThresholdDownlink / maxRetxThresholdUplink: Max number of times eNB on DL/UE on UL retransmits a RLC packet before declaring max_RLC_RTx failure dropped call

o

UlSyncTimer: eNB declares loss of UL when unable to detect sufficiently strong SRS. Recommendation: 3 sec.

8. Re-establishment  UE will attempt re-establishment following a Handover failure o Goal to expedite recovery following the HO failure / Radio Link Failure (RLF)  Re-establishment supported on all 3 cells of the source and/or target eNB, depending on when the RLF occurred o If RLF occurs before MR is received, then only source eNB will have the context / will support re-establishment o If RLF occurs after MR is received and before HO confirm is received, then both eNBs will have the UE context o If RLF occurs after HO confirm is received and source has released resources, then only the target eNB will have the UE context 9. Handover Performance Metrics 9/2/2011

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

Key drive tests metrics evaluated when optimizing HO parameters (in order of priority) o HO Success Rate o Number of HO Attempts o DL/UL throughput o DL/UL BLER o Re-establishment Success Rate



CDMA basics apply to LTE when optimizing HO performance / coverage



o

Minimize number of cells covering an area

o

Maintain dominant coverage

o

Strive to achieve good SINR

Becomes more important with LTE given the Hard Handover nature

10. Factors affecting HO Performance  Sensitivity to usage environment o Current settings optimized based on drive testing o Main goal to achieve a good HO success rate o While minimizing number of HO attempts (HO interruptions) to maximize throughput performance 

Potential for optimizing HO parameters based on usage environment o









Urban/Dense Urban topology typically has higher stationary usage. Due to slower fading, HO failure not as much of a concern. Slower HO parameter set will tend to minimize number of HO interruptions. Possible parameter sets: o

Hysteresis = 3 dB

o

filterCoefficientRSRP =fc4; ttt=640ms

o

filterCofficientRSRP =fc11; ttt=0ms

Fast moving environments (e.g. predominantly highway coverage) will be the other extreme. o

filterCoefficientRSRP=fc4

o

hysteresis = dB

UE search algorithm dependency o L1 filtering is UE implementation dependent o According to 3GPP, UE needs to automatically adjust L3 filter coefficients if L1 sampled faster  In general, monitor HO performance as UE implementations evolve o May need to strike balance between UE differences when choosing HO parameter values UE sensitivity differences / improvements o Evidence of difference in RS / PDCCH performance sensitivity among UE vendors o As a result, expect difference in HO success rate across UE types o Expect sensitivity improvements – need to monitor over time RF Loading on the network o Loading drives up the HO failure rate due to weakened DL SINR esp. in the HO region

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When tuning HO parameters, consider effect of RF loading, esp. if applying slower HO parameter set As networks get loaded, need to study if a balance can be achieved – faster HO set to switch to the best cell as soon as possible versus adverse impacts from frequent ping-ponging / switching to momentarily strong cells



RACH configuration / issues o Contention free RACH supported for HO – benefit under loaded conditions o RACH parameter settings (e.g., starting RACH power, number of RACH msg1 repeats, etc.) o UE issues – more recent LGE G13 software version seems to have fix for RACH timing issue which was causing T304 failures due to RACH msg2 timeouts



Cell Individual Offset (CIO) o If CIO set to non-zero to optimize HO performance on specific cell pairs, those neighbors would be signaled via Neighbor List transmission on the RRC Connection Reconfiguration message (immediately after the one for HO command) o Careful about enabling NL transmission everywhere  Some evidence that turning on NL transmission for all neighbors can increase drop call rate  Potential impact from increase in processing burden from tracking all specified neighbors instead of just looking for strong candidates  Contrary to expectations from CDMA/EVDO  Based on LGE G13 in a dense urban markets – need to confirm in other markets/with other UEs



RSRP versus RSRQ o Field studies have not shown any clear benefit of using RSRQ as HO trigger  RSRP typically has provided as good or better HO performance than RSRQ  Possible UE implementation dependencies  Potentially evaluate in the future

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How to use SAM to examine network status

1. Double click on the icon

on your desktop to open 5620 SAM Client.

2. Highlight “Network” to view the network status as in Figure 236.

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Figure 236 SAM Network Status 3. Click on the Legend Icon to view the following Icons Legend, Colors Legend and Highlight Sessions as in Figure 237.

Figure 237

4. Click on the Icons Tab as in Figure 238, Figure 239, and Figure 240. The Icon Tab describes the Icons of the Network Element, different Icon Elements Description and Alarm Icon.

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Figure 238

Figure 239

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Figure 240

5. Click on the Colors Tab as in Figure 241. The Colors tab describes the different colors of the Physical Link.

Figure 241

6. Click on the Highlight Sessions tab as in Figure 242.

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Figure 242

20

How to use SAM to change eNodeB parameters

This section describes eNodeB online configuration, which is the process of configuring eNodeB parameters using the 5620 SAM GUI.

Figure 243 SAM Client Logical View Follow these steps for accessing eNodeB Configuration parameter forms. • Click on the plus sign for Network to expand the view to locate the appropriate eNodeB. • Right-click on an eNodeB and choose Logical View from the contextual menu. This will Open eNodeB logical window as shown in Figure 244.

• Right click on e-NodeB Instance and select Properties from the menu.

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Figure 244 Equipment-E-NodeB Logical View It will pop up another window as shown in Picture3. Select Components tab to see configuration parameter groups for this eNodeB. Expand by clicking + sign to see child objects of the parameter group. In below Figure 245 as an example RRC Measurement Conf is shown under RRM Services.

Figure 245 eNodeB NE Instance

LTE Cell Parameters: Similarly we can see LTE Cell level parameters as described in Figure 246 below.

Figure 246 Equipment-E-NODEB Instance From Logical Window view expand Cells by clicking on + sign then select the cell which you want to see configuration settings. • Right click on the Cell and select Properties as shown in Figure 246.

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• It will pop up another window as shown in Figure 247. Select Components tab to see configuration parameter groups for this LTE Cell. Expand by clicking + sign to see child objects of the parameter group.

Figure 247 LTE Cell Instance In Figure 247 we are expanding Cell Selection Reselection Conf group by clicking + sign as shown in this example. At this time you will see the child object under Cell Selection Reselection Conf which is Cell Selection Reselection Conf Name:0 Right click on this child object and select Properties. This will open a new window displaying Cell Selection Reselection configuration parameters as shown in Figure 248.

Figure 248 Cell Selection Reselection configuration parameters

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The user can review currently set values for configuration parameters in this window and similarly one can open any other configuration parameter forms to see related parameter settings. These parameter settings can be modified from this window as described below. • User can type in a new value for the parameter need to change. As Example for QRxLevMin (dBm) can be changed from -110 to a new value like -120. • Once the new value is entered click Apply to make these changes take effective Immediately. Special Note: Please note that some of these parameter changes need to Reset eNodeB as described below. Configuration parameters are classified into classes that have consequences when modifying them:  Class A – Will cause a Full Reset of eNodeB  Class B – Will cause Partial (card) Reset of eNodeB  Class C – No reset

21 How to change OCNS Procedure on how to create an OCNS WO using WPS. 1. Two ways to open WPS V7.1  Click Start, click Programs, click WPS V7.1 LTE_WPS 021-20110201, and click WPS V7.1 OR



Double Click on the Icon WPSV7.1



Alcatel-Lucent 9452 WPS as seen in Figure 1 after opening WPS V7.1..

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Figure 249

2. Import a snapshot 

Click File, click Import and Export as in Figure 250.

Figure 250

 

On the Import & Export Wizard Window Select Import snapshot, then select Next as in Figure 251.

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Figure 251

 

On the Import snapshot (Local file system) Window Select, Replace initial snapshot & discard existing orders, then select Next as in Figure 252.

Figure 252

 

On the Import snapshot (Local file system) Window – Replace initial Snapshot & discard existing orders. Select Browse, and search for the file as in Figure 253.

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Figure 253

  

On the CM XML snapshot Window Select the snapshot (xcm) file, then select Open as in Figure 254. Note: You can also import an XML file to create the WO for OCNS.

Figure 254  

On the Import snapshot (Local file system) Window – Replace initial Snapshot & discard existing orders. Select Next, as in Figure 255.

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Figure 255  

On the Import snapshot (Local file system) Window – Replace initial Snapshot & discard existing orders. Select Next, as in Figure 256.

Figure 256   

On the Import snapshot (Local file system) Window – Replace initial Snapshot & discard existing orders. Select No, proceed without saving (cancel available). Select Start as in Figure 257.

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Figure 257  

On the Import snapshot (Local file system) Window – Replace initial Snapshot & discard existing orders. Select Close as in Figure 258.

Figure 258 

Click on the Icon for Search including attributes as in Figure 259.

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Figure 259 

Click on the Tab for “Edition”.



Type “OCNS”, then click on the Icon for Find next as in Figure 260.

Figure 260   

Two types of OCNS as in Figure 261 loadTargetForOCNSonPDDCH loadTargetFOrOCNSonPDSCH

Figure 261 9/2/2011

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

One can set the value from 0 to 100% loading as in Figure 14.



Type 50 for 50% loading , then select Set as in Figure 262.

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Figure 262 

Value changed from 0 to 50 for loadTargetForOCNSonPDSCH as in Figure 263.

Figure 263 

By type settings is for multiple sectors or multiple eNB’s as in Figure 264.



Scroll from left to right and search for “loadTargetForOCNSonPDSCH” as in Figure 264.

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Figure 264  

Setting 50% OCNS-PDSCH on multiple eNB’s as in Figure 265. Highlight “loadTargetForOCNSonPDSCH” and select the multiple eNB’s you want to set as in Figure 265.

Figure 265  

Type 50, then select Set button as in Figure 266. Results of the multiple eNB’s (LteCell086002 and LteCell086003) after setting the value to 50 as in Figure 266.

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Figure 266 

LteCell086002 and LteCell086003 were set to 50% OCNS as in Figure 267.

Figure 267   

Creating a WorkOrder for LteCell086002 and LteCell086003 as in Figure 268. Click “new workorder (current)” as in Figure 268. Notice the eNB’s for 086002 and 086003 for changes from 0 to 50 as in Figure 268. Previous value was 0 , Value 50 (this is the new value for OCNS).

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Figure 268

In the Workorder – new workorder window as in Figure 269.  In the Name box, supply a name for this procedure.  In the Description box, supply a description of this procedure.  In the Originator box, supply your name.  Click Apply to complete the process, and “OCNS_PDSCH_20110311” will be displayed under Workorders as in Figure 270.

Figure 269 

WorkOrders created “OCNS_PDSCH_20110311” as in Figure 22.

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Figure 270 

In the window as in Figure 271, Right Click OCNS_PDSCH_20110311, select Export WorkOrder, and select on local file system, to display window as in Figure 271.

Figure 271 

On the Select an output file window, create a “File Name”, then select SAVE as in Figure 272.

Figure 272 

On the local file system window, the creation for WorkOrder – OCNS_PDSCH_20110311.xwo and OCNS_PDSCH_20110311_reverse.xwo as in Figure 273.

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Select “Close” to close the window as in Figure 273.

Figure 273  

WorkOrder on your local file system as in Figure 274. FTP files (.xwo) to customer network to apply the WorkOrder through SAM.

Figure 274

22 How to examine system parameters and change neighbor list using WPS Follow the steps below: 1. Download LTE WPS from follow LiveLink (required login/password) Note : To get login/password call help desk and request access to LiveLink https://wcdma-ll.app.alcatel-lucent.com/livelink/livelink.exe? func=ll&objId=61577920&objAction=browse&sort=name&viewType =1

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Recommend to download the latest and greatest version available in this link. 2. There are two file in each folder, download both files, one for setup and one for plug in. Plug in extension is .wipsar and other file is setup file. If setup file is not with extension of .exe, add .exe to this file before execute it. 3. LTE WPS can be installed in same computer with UMTS WPS, DO NOT have to uninstall UMTS WPS, but make sure store in different directory from UMTS WPS. 4. Make sure unzip plug in and place in same directory where WPS setup program located. Plug in file has extension of .wipsar 5. Common issue – install with in-correct plug in or no plug in, after installation and importing snapshot, there is no eNodeB display. If this issue occurs, reinstall and install again with proper plug in. 6. Follow Using WPS specifically written for RF for common RF related work such as changing parameters, add/delete neighbor list. 23

How to use SAM to collect call trace data

The 5620 SAM supports call trace on eNodeB NEs. Call trace is a function that collects call-level data on an interface. This data can be transferred to an external system for processing and analysis, and the resulting information can help a network operator do things such as the following: • identify performance issues that may affect end-user QoS or SLAs • troubleshoot device malfunctions • monitor resource usage for capacity management • validate end-to-end network transmission The 5620 SAM supports the following call-trace session types: • cell-based—a trace that the SAM initiates at operator request or as a scheduled task • event-based—a trace that begins when a specified threshold value is reached • signaling-based—a trace that the MME initiates • debug—a troubleshooting trace performed by Alcatel-Lucent technical support Note:

The user should have a proper login credentials to access SAM GUI Client for setting call trace session and unix login to auxiliary servers to retrieve the log files.

Once the user log in to SAM GUI interface, follow this path as indicted below in Figure 275 Manage -> Mobile Access -> Call Trace Sessions

Figure 275 Call Trace Session menu

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This action will pop up a new window called Manage Call Trace Sessions [Edit]. Please see enclosed Figure 276 and on this window select second tab which is Call Trace Sessions.

Figure 276 Manage Call Trace Sessions Then click on Create button as shown in Figure 276. This will pop up another window called Call Trace Session [Create]

Figure 277 Call Trace Session This is the window where user will set the attributes related to a call trace,  Step1: Click on Select button to add eNB’s those are needed to be traced. This will pop up another window called Select eNodeB Instance as shown below.  Step2: Populate CallTraceSessionName & Description fields in Call Trace Session window.  Step3: Depending up on the requirement check the necessary fields to be traces. These three options are available for eNodeB tracing. o isRRCTraced – For RRC layer tracing o isS1MMETraced – For S1 interface tracing 9/2/2011

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o isX2Traced – For X2 link tracing  Once above steps are completed click on Apply button. Selecting eNodeB Instances: When you click Select button from Figure 277, you will get the window as in Figure 278.

Figure 278 Select eNodeB Instance  Click on Search button which will populate with entire list of eNodeB’s currently managed by the SAM.  Select the eNodeBs by highlighting them and click OK button. Note: Maximum numbers of eNodeB’s can traced are limited to 100 in LA3.0

Figure 279 Call Trace Session Once above mentioned steps completed, you will notice Activate button as shown in Figure 279. Click this button will activate eNodeB trace and trace logs will be collected at the following location on Auxiliary server.

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/opt/5620sam/calltrace The eNodeB call trace file name format will be as shown below example. A20110309.1731-0400-eNodeB.TAG_ENB_NAME.31001232769.115.gz

24

How to use SAM to change the antenna electrical tilt

In LA3.0 antenna electrical tilt can be adjusted remotely through SAM/NEM interface. For this functionality to work properly actuator should be connected to RRH through AISG interface cable for remote controlling of antenna tilt.

Note: The user should have a proper login credentials to access SAM GUI Client.  Once log into SAM GUI client highlight the eNB for which you want to view and modify antenna tilt.  Right click on highlighted eNB and select Launch NEM which will launch a new window displaying eNB related information.

Figure 280 NEM Display Above picture is showing the hardware elements of a eNB. This screen displays CCM, BBU RRH, RET, TMA and other components currently installed at the site. Click on RET to see Remote Electrical Tilt related information.

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Figure 281 RET Selection This screen presented with a list of RET units that were discovered in the AISG bus by one or more of the RRHs in the eNodeB. The first column is the name assigned by the system to each of these units. The second column is the RET Logical Id that is not currently used by the system. Some of these attributes are retrieved from these units when they were discovered and other attributes are associated to the use of these units in our eNodeB.  The Unique Identification Number  Number of Actuators,  Maximum Tilt,  Minimum Tilt,  Mechanical Tilt (installed tilt);  Configuration File Name,  Current Tilt,  Serial number

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Figure 282 RET Aid Table Display RF Engineers can verify RET assignments for each antenna connected to eNB equipment. Click on Antenna Port from eNB Tree on left side panel.

Figure 283 Antenna Ports in eNB Tree

 Click on Antenna Ports on left side eNB tree view.  Click on Antenna Port – RET tab on right side panel to view antenna post assignments to RET devices. The following figure shows the RET assignments to each of the antenna ports. Notice that the same RET is shown in two pairs of antennas because one RET control the tilt of both antennas on the sector.

Figure 284 Antenna Port Assignments Antenna assignment to RET device information is critical to avoid mistakes while selecting the right sector to change electrical tilt. Changing Electrical Tilt:

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3 1

5

2

4 Figure 285 Steps for tilt changes Please make sure that below steps are followed to read currently set tilt information and changing the electrical tilt and updating mechanical tilt.     

Select HW Modules (1). Select RET from eNB Tree on left side panel (2) Select RET Aid Table tab on right side panel (3) Make sure that you see all the field in right side panel by dragging the slide bar (4) Click on row of RET which we are planning to change under Antenna Tilt field right click to see options available for editing antenna tilt information.

Figure 286 Edit RET Data menu

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From the above picture select Edit RET Data option for editing tilt information. A new window will pop up showing current tilt information for that particular RET device.

Figure 287 Edit RET Data window Below window is expanded version of Edit RET Data which displays current tilt information.

Figure 288 The following changes can be made on this window.  RET Log Number: This information is for record purpose.  Mechanical Tilt: This field is for recording the mechanical tilt set in the field. User can populate mechanical tilt and any changes to this field will not change Mechanical tilt of the antenna in field.  Antenna Tilt: This is the field for changing electrical tilt of the antenna. User should make sure that any changes to this field values should be within minimum and maximum allowable tilt for a given antenna.  Once the right values are populated click on OK button. Once the user click OK button after setting the right values for antenna tilt, it will take about a minute to initiate actuators and display will be updated with new tilt values.

25

Procedure to change antenna azimuth and mechanical tilt

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Changing antenna azimuth and mechanical tilt can be used to enhance coverage and control interference. They are performed by the customer. Because they are expensive to perform, the justifications need to be well documented. They should include:  The drive test plots that indicate the points of concern, for example, the location of call drop or low throughput.  The analysis that shows why you think antenna azimuth change or mechanical tilt will alleviate the problem.  9955 design tool plots that show the predicted performance before and after the change.  Scanner data plots that show the coverage and interference of each PCI. After you have prepared the justification material, you should discuss with the RF lead. If the RF lead agrees, you and the RF lead should present it to the customer representative. An alternative is to present it to the ALU program manager, and have the program manager present it to the customer. 26

Plot scanner data to compare LTE signal strength vs. UMTS and GSM signal strength

Under Construction 27

Additional Information

27.1 Support Escalation Path Legend LTE

ALU Installation/Integration/Optimization

LTE & 2G/3G

ORACL E eNB

SR/SAR M&P

SAM IPD (SAM) TAC

RITC (eNB)

Bob Witts

John Lackey & Stacy Groene

Paul Chory

RF

OSC

Kwing Lee

Paul Augustine

eNB Dev Saurabh Gupta

7705 SAR IPD TAC

Cyril Nadavallil

Oracle HWR/Solaris

TAC (Umesh Joshi)

Issue Type

SAM Application

TEC NAR (eNB) Robin Schmuckal

7750 SR

SUN Support SAM Install

IPD (7750) TEC David M. Wong James J. Zhang

IPD (7705) TEC Harry Schenk

IPD (SAM) TEC Robert Baker

IPD (SAM) Dev

IPD DEV

IPD DEV

Chris Lefebvre

Assumes: 7x24 support will be provided starting Jan 1, 2011 for internal teams except IPD SR/SAR.

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Legend LTE

ALU Installation/Integration/Optimization

LTE & 2G/3G

ORACLE

NPO

HP AT&T

TAC

CITRIX

(Allison Burns)

Chris Zervos

HWR/SOLARIS CiITRIX outside warranty period and no RTS contract)

HWR/SOLAR CITRIX IS CITRIX (within warranty period) Issue Type

AT&T

ALU SWR HWR/OS

(Allison Burns)

Tu-Chuong Huynh Issue Type

NPO Application

NPO

WPS

SAM

WTA

Issue Type

CITIRX

TEC NAR (NPO)

HWR

Robin Schmuckal

HP HWR/OS

CITRIX

ORACLE

NPO Dev (Assignee based on tracker)

Assumes: 7x24 support will be provided starting Jan 1, 2011 for internal teams except IPD SR/SAR.

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LTE & Legend 2G/3G

LTE

LTE & 2G/3G

ALU Installation/Integration/Optimization

WPS WTA Rajiv Singal

TAC (Allison Burns)

Robin Schmuckal

WPS development

WTA SE/Dev Amy Ortega

Assumes: 7x24 support will be provided starting Jan 1, 2011 for internal teams except IPD SR/SAR.

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ALU RF Optimization Kwing Lee MME, P/S-GW Escalation path

This is explained in Specific eNB and 7750/7705 paths

eNB issue

OSC Paul Augustine

Type of issue

Transport Issue (7705 SAR/7750 SR)

Paul’s team Will continue get support from Robin Schmuckal

Paul’s team Contact 7750 SR/7705 SAR Support Listed in other paths

TEC NAR Robin Schmuckal

MME, P/S-GW issue

Direct AT&T Contact

No, not getting proper support, escalate to ALU Market TPM

?

Yes, Successful

Look Below for AT&T MME and P/S-GW contacts

Market TPM Phoenix: Charly Dukes NY/NJ: Michael Lee/ Tim Duff BAWA: David Craig

Contact AT&T Market PM and get resources

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ALU RF Optimization Kwing Lee

No

Understo od what

the issue is Antenna Issue?

Antenna Work (Tilt, Azimuth) Escalation Path

Yes

OSC Paul Augustine Which Market TEC NAR

Robin Schmuckal

PHOENIX BAWA

Market PM Charles Williams

Market PM Sreedhar Appasani

NY/N J

Market PM Joseph Valente

Installati on Team

27.2 Filzella FileZilla Server (windows) – to be used as last resort when winds and iperf are not available  Filezilla Server Interface you have to modify some value: o Settings/Miscellaneous o Internal BufferSize=65535 o Socket BufferSize = 262144  Step1: Configure the “Connection Speed” with the maximum value “20000 kbps)  Step 2: Select “Modify all Network Adapters”  Step 3: Configure the MTU value with 1446 9/2/2011

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Step 4: Select “Optimal Settings” Step 5: Apply Changes Step 6: Restart the computer

Set Max connections as indicated in the picture below

Launch the Filezilla software Populate the Host ip, username and password Click on “Quickconnect” (This would authenticate the login account) For downlink testing locate the files on the remote location and drop on the local directory For uplink testing locate the files on the local directory and drop on the remote director

The following diagram highlands the location of the FTP server for the End-to-End setup

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27.3 DOS FTP DOS-FTP – can be used as resort when Winds and Iperf are not available  Open up a command prompt by click on start->run->type cmd and hit enter  Log into the FTP server o ftp 135.245.4.38 o Inter user name (e.g admin) o Inter password (e.g admin1) o Change directory to where the files would be downloaded from or uploaded to o Set to binary by typing “bin” and press enter key o Set to hask key by typing “ha” and press enter key

Downloadable files - downlink

28

Reference

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 LTE Engineering Optimization Handbook  LTE Optimization Troubleshooting Handbook  Documentations and Supports for Syncro Test, WINDS, and eDAT 29

Acronyms

BLER BW CFI CQI CTA DL ePC GNG HARQ ICD IoT MCS MIMO OCNS PDCCH PDSCH PUSCH QOS R&D RACH RF RLC RRH RSRP RSRQ rx SAM SINR SME SOW tx UE UL

Block Error Rate Bandwidth Control Frame Indicator Channel Quality Indicator Customer Technical Advocate Down Link Evolved Packet Core Go-No-Go Hybrid Automatic Retransmission Request Initial Cluster Design Interference over Thermal Modulation and Coding Scheme Multiple Input Multiple Output Orthogonal Channel Noise Simulator Physical Downlink Control Channel Physical Downlink Share Channel Physical Uplink Share Channel Quality Of Service Research and Development Random Access Channel Radio Frequency Radio Link Control Remote Radio Head Reference Signal Received Power Reference Signal Received Quality Receive Service Awareness Manager Signal to Interference plus Noise Ratio Subject Matter Expert Statement of Work Transmit User Equipment Up Link

END OF PROCESS DOCUMENT

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