Cluster Optimization Procedure V1

Cluster Optimization Prepared by: Samsung

Course Name: SCFT Procedure

Morning Session (10:30am to 1:30pm)

Day 1

Lunch break

Course Objective Who should attend This module will enable participants RF / DT engineers, Riggers to understand how to conduct Cluster Optimization Drive

Afternoon Session (2:30pm to 6pm) •XCAL Demonstration • Hands on exercises

Good to know Keep your mobile phone in the silent mode during the session Need to sign attendance sheet at the start and end of each day At the end of each training post test will be conducted

Stick to break timings Your valuable feedback will be taken at the end to enhance training experience For logistics support contact the co-ordinator

Agenda Introduction  Cluster Optimization Test Entrance Criteria  High level process  Drive Route Selection

Test Procedure  Types of tests  Checklist for cluster optimization

Cluster System Acceptance Test     

RF Design Validation Handover Test Retainability Test Accessibility Test VoLTE Quality

Introduction to Cluster Optimization

Cluster Optimization Test Entrance Criteria Cluster Definition

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 Minimum of 20 to 30 eNB’s  Contiguous coverage  Can cross TA boundaries

Test entrance criteria

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 At least 80% of the eNB’s in the test cluster shall have passed SCFT and shall have compliance with EMF norms  SCFT and EMF compliance report for each eNB for the test cluster has to be verified  Any changes to the eNB physical configuration required for EMF compliance shall be updated in the cluster database

Cluster Optimization High-level Process Drive 1 • First cluster drive after 80 % of the sites pass SCFT & EMF

Optimization • Post-analysis changes to network

Drive 2 • Second Drive Test result will be compared with the first Drive Test for worst areas by measuring entire signal environment after change in System Parameters and adjustments of Antenna

Drive Route Selection UE should be served by all sectors of every eNB in the cluster Include highways, major and minor roads in the cluster Route should represent potential subscriber usage locations

Should not leave the designed coverage area for the cluster First and second drive routes should remain identical Conditions (e.g. UE position) should be identical between drives Do not cross 40 kmph

SCFT + Cluster Drive Case Suppose an eNB comes on-air after the rest of the cluster For that site, SCFT & Cluster optimization drive test should be done till first tier neighbors for the site

Drive Route for late on-air site

B

1. Drive route for Cluster when Site B is not on Air

B

2. Drive route for Sub Cluster after Site B is on Air

Test Procedure

Tests to be conducted FTP Downlink Long Call

FTP Uplink Long Call

VoLTE Long Call

4 UE’s : 1 Master, 3 Slaves

VoLTE Short Call

FTP Downlink Long Call Ensure that OCNS is enabled for all eNBs in the cluster with 76% downlink load Ensure that the UE is successfully attached to the LTE network Select the appropriate UE and download the FTP DL Scenario from FMS Start the Autocall test. FTP download uses a single file with the highest possible compression and file size of 8GB. (Attach to detach - 60 min & 10 Sec Idle time) Ensure that the log files are being captured Start traversing around the pre-defined drive route at 30-40 Kmph, continuing the FTP download and reinitiating in case of call drop At the end of the drive route stop the logging and ensure that the log files are uploaded

FTP Uplink Long Call Ensure that OCNS is enabled for all eNBs in the cluster with 76% downlink load Ensure that the UE is successfully attached to the LTE network Select the appropriate UE and download the FTP UL Scenario from FMS Start the Autocall test. FTP UL uses a single file of highest possible compression and file size of 1GB. ( Attach to detach - 60 min & 10 Sec Idle time) Ensure that the log files are being captured Start traversing around the pre-defined drive route at 30-40 Kmph, continuing the FTP upload and reinitiating in case of call drop

At the end of the drive route stop the logging and ensure that the log files are uploaded

VoLTE Long Call Ensure that OCNS is enabled for all eNBs in the cluster with 76% downlink load Ensure that the UE is successfully attached to the LTE network and successfully registered for VoLTE service Select the appropriate UE and download the VoLTE Long call Scenario from FMS Start the Autocall test. Ensure that the log files are being captured Start traversing around the pre-defined drive route at 30-40 Kmph, continuing the long call and reinitiating in case of call drop At the end of the drive route stop the logging and ensure that the log files are uploaded

VoLTE Short Call Ensure that OCNS is enabled for all eNBs in the cluster with 76% downlink load Ensure that the UE is successfully attached to the LTE network and successfully registered for VoLTE service Select the appropriate UE and download the VoLTE Short call Scenario from FMS Start the Autocall test. Ensure that the log files are being captured

Start traversing around the pre-defined drive route at 30-40 Kmph, continuing the short calls At the end of the drive route stop the logging and ensure that the log files are uploaded

Checklist for Cluster Optimization Items

Test Call Ping Google server OCNS Loading Site Coverage

Sector Overshooting

Coverage overlapping

Accessibility

Quality check

Mobility/Retainability Worst Area

Parameter

Action

FTP Test Call Upload & Download Ping from command prompt Loading effect 76% in the downlink Analysis of RSRP,SINR plot, PCI plot

Before starting drive test make a test call Before starting drive test try ping test Before starting drive test Optimization suggestions will be given after post processing of 1st drive test Optimization suggestions should be given and which will be implemented after 1st drive test in Cluster optimization

1. Analysis based on each sector coverage area and handover till adjacent cluster boundary 2.SCFT report should be considered for reference Analysis based on each sector coverage area using PCI plot of serving cell

Optimization suggestions should be given to reduce coverage overlapping and which will be implemented in after 1st drive test in Cluster optimization

Attach success rate, RACH success rate, Tracking area update success rate Analysis for weak DL & UL throughput areas. Analysis based on interference, overlapping, Handoff issues, SINR, hardware issues etc

KPI analysis w.r.t benchmark and optimization after 1st drive test

Handoff, call drop

Specific issues for Handoff, call drops should be analyzed and optimized accordingly Optimization suggestion should be given to improve worst areas

Analysis for the worst area for Throughput, SINR, Low coverage etc

Optimization suggestion should be given to improve weak throughput areas

Cluster System Acceptance Tests

Cluster System Acceptance Tests RF Design Validation

Handover

Retainability

Accessibility

VoLTE Quality

[JR1]Samsung modified table as per test case agreement

between RJIL & Samsung

RF Design Validation Tests Following test cases shall be conducted & will be mandatory for pass/fail criteria

Index

KPI

Target Value

No. of UE's

1

RSRP Coverage Morphology

Downlink data long

>95%

1

2

No. of Overlapping Server Downlink data long within 5dB, < 3 Servers

> 90%

1

3

No. of Overlapping Server Downlink data long within 5dB, < 2 Servers

> 60%

1

4

DL Throughput > 2Mbps

Downlink data long

> 95%

1

5

Average DL Throughput

Downlink data long

> 14.5M

1

6

UL Throughput > 256kbps

Uplink data long

> 95%

1

7

Average (Mbps)

Uplink data long

> 2.5M

1

UL

per

Type of Call

Throughput

RSRP by Morphology

Parameter

Morphology

Criteria

Dense Urban

> -107dBm for 95% of samples

Medium Urban

> -110dBm for 95% of samples

SubUrban

> -113dBm for 95% of samples

Rural

> -116dBm for 95% of samples

RSRP

Handover Test Following test cases shall be conducted & will be mandatory for pass/fail criteria

Index

11

KPI

Type of Call

Target Value

No. of UE's

Downlink data long + Uplink data long + VoLTE long

> 98%

3

Interruption Downlink data Time long + Uplink data < 50ms + UE Switching long + VoLTE long Time

> 95%

3

Handover Success Rate

Handover 12

Retainability Test Following test cases shall be conducted & will be mandatory for pass/fail criteria c

Index

13

KPI

Call Drop Rate*

Type of Call

Target Value

No. of UE's

Downlink data long + Uplink data long + VoLTE long

TBD

3

Accessibility Test Following test cases shall be conducted & will be mandatory for pass/fail criteria

Index

KPI

Type of Call

Target Value

No. of UE's

14

RACH Success Rate

VoLTE Short*

TBD

1

15

Attach Success Rate

VoLTE Short*

TBD

1

16

Detach Success Rate

VoLTE Short*

TBD

1

17

VoLTE Attach Time < 3.5 sec

VoLTE Short*

TBD

1

VoLTE Quality Test Following test cases shall be conducted & will be mandatory for pass/fail criteria

Index

KPI

Type of Call

Target Value

No. of UE's

19

RTP Packet Loss and Discard Rate

VoLTE Long*

TBD

1

20

e2e one way delay < 100ms

VoLTE Long*

TBD

1

21

Packet Delay Variation (Jitter) < 40ms

VoLTE Long*

TBD

1