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3900 Series Base Station Product Documentation Product Version: V100R010C10 Library Version: 11 Date: 11/30/2016
For any question, please contact us. Copyright © Huawei Technologies Co., Ltd. 2016. All rights reserved.
BBU Interconnection Contents 4.3.1.14 BBU Interconnection
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SingleRAN SRAN10.1
BBU Interconnection Feature Parameter Description Issue
01
Date
2015-03-23
HUAWEI TECHNOLOGIES CO., LTD.
Copyright © Huawei Technologies Co., Ltd. 2016. All rights reserved. No part of this document may be reproduced or transmitted in any form or by any means without prior written consent of Huawei Technologies Co., Ltd.
Trademarks and Permissions and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd. All other trademarks trademarks and tra trade de names me mentioned ntioned in th this is documen documentt are the prope property rty of their respe respective ctive holder holders. s.
Notice The purchased products, services and features are stipulated by the contract made between Huawei and the customer. All or part of the products, services and features described in this document may not be within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information, and recommendations in this document are provided "AS IS" without warranties, guarantees or representations of any kind, either express or implied. The information in this document is subject to change without notice. Every effort has been made in the preparation of this document to ensure accuracy of the contents, but all statements, information, and recommendations in this document do not constitute a warranty of any kind, express or implied.
Huawei Technologies Co., Ltd. Address:
Huawei Ind Industrial ustrial Base B Bantian, antian, Long Longgang gang Shen Shenzhen zhen 51812 518129 9 People's Republic of of China
Website:
http://www.huawei.com
Email:
[email protected]
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.1.14 Contents 1 About This Document 1.1 Scope 1.2 Intended Audience 1.3 Change History 2 Introduction 2.1 Introduction 2.2 Triple-Mode Base Station Deployment 2.2.1 BBU Slots 2.2.2 Cable Connections 2.2.3 Application Scenarios 2.2.4 Restrictions 2.2.5 Supported Features and Functions 2.3 UMTS Baseband Capacity Expansion 2.3.1 Cable Connections 2.3.2 Application Scenarios 2.3.3 Restrictions 3 Related Features 4 Impact on the Network 4.1 Impact on System Capacity 4.2 Impact on Network Performance 5 Engineering Guidelines 5.1 When to Use BBU Interconnection 5.2 Required Information 5.3 Network Planning 5.3.1 Software Versions 5.3.2 Subracks and Hardware Configurations for the BBUs 5.3.3 Transmission Modes 5.3.4 CPRI-based Topologies 5.3.5 Clocks 5.4 Deployment 5.4.1 Deployment Requirements 5.4.2 Data Preparation 5.4.3 Initial Configurati Configuration on 5.4.4 Activation Observation 5.5 Adjustment Examples 5.5.1 Adjustment from a GU Base Station to t o a GU+L Base Station 5.5.2 Adjustment from a G*U*L Triple-Mode Base Station to a G*U*L+G*U*L Triple-Mode Base Station 5.5.3 UMTS Baseband Capacity Expansion from a GU+L to a GU+UL Triple-Mode Base Station 5.5.4 Interconnection Adjustment in a GU+L Triple-Mode Base Station 5.6 Performance Optimization 5.7 Troubleshooting 6 Reference Documents
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About This Document
Scope
This document describes the BBU Interconnection feature, including its implementation principles, principles, network impact, and engineering guidelines. This document applies to macro base stations (BTS3900, BTS3900L, BTS3900A, BTS3900AL, BTS3900C, and DBS3900). Any managed managed objects (MOs), (MOs), parameters, a alarms, larms, or counte counters rs described in this documen documentt correspond to the software release delivered with this document. In the event of updates, the updates will be described in the product documentation documenta tion delivered with the latest software release. r elease. Intended Audience
This document is intended for personnel who: Personnel who need to understand the features herein. Personnel who work with Huawei products. Change History
This section provides information about the changes in different document versions. There are two types of changes: Feature change Changes in features of a specific product version Editorial change Changes in wording or addition of information and any related parameters affected by editorial changes
AN10.1 01 (2015-03-23) Compared with Draft A (2015-01-15) of SRAN10.1, Issue 01 (2015-03-23) of SRAN10.1 does not include any changes.
AN10.1 Draft A (2015-01-15) Compared with Issue 01 (2014-04-30 (2014-04-30)) of SRAN9.0, Draft A (2015-01-15) of SRAN10.1 includes the following changes.
Change Type
Change Description
Parameter Change
Feature change
Added 5.5.2 Adjustment from a G*U*L Triple-Mode Base Station to a G*U*L+G*U*L Triple-Mode Base Station.
None
Editorial change
None
None
Introduction
Introduction
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BBU Interconnection enables two BBUs to be connected through a BBU interconnection signal cable. BBU interconnection interconnec tion includes infrastructure interconnection and baseband interconnec interconnection tion and applies to the following scenarios: Triple-mode base station deployment Infrastructure interconnection interconnection is applied in GU+L, GL+U, or G*U*L+G*U*L triple-mode base stations. In this scenario, infrastructure interconnection is used. Two interconnected BBUs serve one base station in the wireless network. UMTS baseband capacity expansion In addition to infrastructure interconne interconnection, ction, baseband interconnection interconnection has been added to exchange baseband data between BBUs. A single BBU supports a maximum of 6 UMTS baseband boards. Baseband interconnection enables two BBUs to support a maximum of 11 UMTS boards, enhancing the is UMTS baseband processing capability of a base station. Currently, onlybaseband UMTS baseband interconnection supported. Triple-Mode Base Station Deployment 2.2.1 BBU Slots
A BBU has 11 11 slots, as shown shown in Figure 2-1. Figure 2-1 BBU 2-1 BBU slots
2.2.2 Cable Connections
In a triple-mode base station, two BBUs can be connected using UCIU+UMPT or UMPT+UMPT interconnection, as shown in Figure 2-2. Figure 2-2 Inter-BBU 2-2 Inter-BBU connections through UCIU+UMPT or UMPT+UMPT interconnection in a triple-mode base station
The following table describes UCIU+UMPT and UMPT+UMPT interconnection.
Interconnection Method
Application Scenario
UCIU+UMPT
BBU3900+BBU3900; BBU3900+BBU3910;
BBU 0
A UCIU can be installed in any one of slots 4, 5, 0, and 1 in BBU 0. The slot priority is as follows: slot 4 > slot 5 > slot 0 > slot 1.
BBU 1
A UMPT must be configured in BBU 1 for BBU interconnection
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Cable Connection
One of ports M0 through M4 on the UCIU in BBU 0 is connected to the CI port on the UMPT in BBU 1 using a BBU interconnection signal cable. UCIU ports M0 through M4 are prioritized from the highest to the lowest. 5/34
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Interconnection Method
Application Scenario
UMPT+UMPT
BBU3900+BBU3900; BBU3900+BBU3910; BBU3910+BBU3910;
BBU 0
BBU 1
A UMPT is A UMPT is configured in BBU configured in 0. BBU 1.
Cable Connection
The end of the BBU interconnection signal cable with Master color-coding is connected to the CI port on the UMPT in BBU 0 and the other end is connected the CI port on the to UMPT in BBU 1.
As shown in Figure 2-2, BBU 0 and BBU 1 are the root BBU and the leaf BBU, respectively. The root BBU and the leaf BBU are determined in the site hardware planning. You can identify whether a BBU serves as the root BBU or leaf BBU by using the following methods: In UCIU+UMPT interconnection, interconnection, the BBU configured with a UCIU is the root BBU. In UMPT+UMPT interconnection, interconnection, the BBU at the end with the Master color-coding on the BBU interconnection interconnec tion signal cable is the root BBU. Fiber optic cables cannot connect BBUs in this interconnection interconnection method.
NOTE: The BBU interconnection signal cable in UMPT+UMPT interconnection cannot be used in UCIU+UMPT interconnection. A BBU interconnection interconnection sign signal al cable is logically logically called CTR CTRLLNK LLNK for an eG eGBTS, BTS, a NodeB NodeB,, or an eNodeB and is logically called BTSCTRLLNK for a GBTS. By default, the leaf BBU is the local node and the root BBU is the upper-level node. In UCIU+UMPT interconnection, a maximum of two CTRLLNKs for a NodeB or an eNodeB and two BTSCTRLLNKs for a GBTS are supported. In UMPT+UMPT interconnection, only one CTRLLNK for an eGBTS, a NodeB, or an eNodeB and one BTSCTRLLNK for a GBTS are supported. 2.2.3 Application Scenarios Table 2-1 lists the application scenarios scenarios for triple-mode base stations.
Table 2-1 Triple-mode 2-1 Triple-mode base station deployment Scenario
Working Mode of BBU 0
Working Mode of BBU 1
GU+L
GU
L
GL+U
GL
U
G*U*L + G*U*L
G*U*L
G*U*L
NOTE: In a co-MPT base station where two BBUs are interconnected, the primary and secondary main control boards are configured in BBU 0 and BBU 1, respectively. The modes configured in BBU 1 must also be configured in BBU 0. In triple-mode base stations, a board of a certain mode must be configured in the same BBU as the main control board of this mode. For details about the board configurations for each mode, see the BBU Hardware Description.
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When UCIU+UMPT interconnection interconnection is used in a triple-mode base station, the following restrictions apply: GSM boards must be installed in BBU 0. Monitoring devices must be connected to BBU 0. Boards in the same BBU must have the same cabinet and subrack numbers. Boards in different BBUs must have different cabinet numbers or different subrack numbers. Otherwise, common boards, such as the UCIU, cannot function. A BBU3910 cannot be co configured nfigured with a U UCIU. CIU. If two interconnected BBU subracks work in co-MPT multiple modes or in single mode, the primary BBU subrack must provide transmission ports. When UMPT+UMPT UMPT+UMPT interconnection is used in a triple-mode base station, the following restrictions apply in addition to the preceding restrictions: The distance between BBU 0 and BBU 1 must be less than or equal to 5 m. BBU 1 must be configured with the UMPTb. If BBU 0 is configured with the GTMU, WMPT, or LMPT, cascaded RRUs cannot be connected to BBU 1. Only BBU interconnection signal cables provided by Huawei can be used. Fiber optic cables cannot be used. The root BBU must provide a port connecting to the transport network. 2.2.5 Supported Features and Functions
In a triple-mode base station, two BBUs are connected using a BBU interconnection signal cable. The BBUs exchange control data, transmission data, and clock signals. Therefore, the BBUs support common transmission (co-transmission), (co-transmission), inter-BBU software-defined radio (SDR), and a common clock.
pported Features Co-Transmission When two BBUs are interconnected, the BBUs support co-transmission between two or more modes. For details, see Common Transmission Feature Parameter Description. Common Clock When two BBUs are interconnected, the BBUs support a common clock between two or more modes. For details, see Common Clock Feature Parameter Description. Inter-BBU SDR In inter-BBU SDR, a multimode RF module is connected to both BBUs. Figure 2-3 shows an example of inter-BBU SDR in which BBU 0 supports GSM and BBU 1 supports UMTS. The RF module (GU) is connected to both BBU 0 and BBU 1.
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Figure 2-3 Inter-BBU 2-3 Inter-BBU SDR
Inter-BBU SDR clock signals for the secondary BBU must be synchronized with those for the primary BBU. The clock signal synchronization synchronization mode is selected according to the following rules: If the primary BBU uses frequency synchronization, the secondary BBU must use frequency synchronization. If the primary BBU uses time synchronization, the secondary BBU can use either time or frequency synchronization. UMTS Baseband Capacity Expansion 2.3.1 Cable Connections
In a triple-mode base station using BBU Interconnection, the WBBPf and UBBPd boards in the BBUs can be interconnected to exchange baseband data. Figure 2-4 shows the inter-BBU cable connections for UMTS baseband capacity expansion.
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Figure 2-4 Inter-BBU 2-4 Inter-BBU cable connections for UMTS baseband capacity expansion
A UMTS baseband baseband board board and a UMTS main control board board are installed in both BBU 0 an and d BBU 1, and the the two UMTS baseband boards are interconnected using a BBU interconnection signal cable. Among UMTS baseband boards, WBBPf and UBBPd boards can provide HEI ports for UMTS baseband interconnection. A WBBPf or UBBPd board can be installed only in slot 2 or slot 3 (preferred) in either BBU. A BBU interconnection interconnection sign signal al cable between between WBBPf boards boards transmits baseband baseband da data ta and expan expands ds baseba baseband nd resource resources. s. A BBU interconnection interconnection sign signal al cable between between WBBPf boards boards cannot be be used interchangeably interchangeably with that for UCIU+UM UCIU+UMPT PT or UMPT+UMPT interconnection. A BBU baseband baseband intercon interconnection nection sign signal al cable between between WBBPf boards boards is logically c called alled BBPLNK. BBPLNK. Either end of a BBPLNK can be configured as the link head. It is recommended that you configure the end on the BBU 0 side as the link head. Currently, only one BBPLNK is supported.
NOTE: Set up a CTRLLNK (for a NodeB/eNodeB) or BTSCTRLLNK (for a GBTS) before setting up a BBPLNK. 2.3.2 Application Scenarios Table 2-2 lists the supported application scenarios for UMTS baseband capacity expansion.
Table 2-2 Application 2-2 Application scenarios for UMTS baseband capacity expansion Scenario
Working Mode of BBU 0
Working Mode of BBU 1
Interconnection Method
GU+UL
GU
UL
Just support UCIU+UMPT infrastructure interconnection method
GU+U
GU
U
Support UCIU+UMPT and UMPT+UMPT infrastructure
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Scenario
Working Mode of BBU 0
Working Mode of BBU 1
U+U
U
U
Interconnection Method
interconnection method
In the preceding scenarios, both BBU 0 and BBU 1 are configured with UMTS main control boards.
NOTE: For details about the board configurations for each mode, see the BBU Hardware Description. 2.3.3 Restrictions
Both BBU 0 and BBU 1 must be configured with one UMTS main control board to expand the UMTS baseband capacity, with the UMTS main control board in BBU 0 as primary and that in BBU 1 as secondary. If the ACT indicator on a main control board is steady on, this board is the primary board. If the ACT indicator on a main control board is steady off, this board is the secondary board. The following local operations can be performed only on the primary main control board: Software upgrades and data configurations using a USB flash drive Local operations on the LMT Clock test Voltage Standing Wave Ratio (VSWR) testing using a USB flash drive In addition, the following restrictions apply: Monitoring devices must be connected to BBU 0. In a NodeB deployed using the plug-and-play function, a UMPT working in UMTS mode must be configured in BBU 0. CPRI fiber optic cables can be connected to any WBBP in either BBU. It is recommended that all CPRI fiber optic cables be connected to the WBBP in BBU 0. For details about CPRI cable connections, see BBU Hardware Description. The secondary UMTS main control board in BBU 1 does not support co-transmission. Boards in the same BBU must have the same subrack and slot numbers. Boards in different BBUs must have different subrack and slot numbers. Otherwise, common boards, such as the UCIU, cannot function. Inter-BBU baseband resource sharing is supported only in the downlink. BBU interconnection cannot enable two NodeBs to be upgraded to one NodeB. Inter-BBU multiple-outp multiple-output (MIMO) is not supported. The main and diversity RRUs serving MIMO cellsmultiple-input must be connected to the ut same BBU. RRUs serving multi-RRU cells, distributed cells, or two cells in a DC-HSUPA or DC-HSDPA group must be connected to the same BBU.
Related Features
requisite Features None
tually Exclusive Features None localhost:7890/printtopics.html?time=Wed Jun 26 2019 13:46:22 GMT+0300 (Arabian Standard Time)
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pacted Features None
Impact on the Network
Impact on System Capacity
BBU Interconnection does not affect system capacity when a triple-mode base station is used. A single-mode single-mode base station supports a ma maximum ximum of 1 11 1 WBBPs afte afterr its UMTS baseband baseband capacity capacity is expanded using BBU Interconnection. For details about the WBBP capacity specifications, see the BBU Hardware Description. For details about the capacity specifications after baseband capacity capacity expansion, see 3900 Series Base Station Technical Descri Description ption. Impact on Network Performance
No impact.
Engineering Guidelines
When to Use BBU Interconnection
BBU Interconnection is used to upgrade base stations to triple-mode base stations and for UMTS baseband capacity expansion. Required Information
Check whether the distance between BBU 0 and BBU 1 is less than or equal to 5 m if you use UMPT+UMPT interconnection. Network Planning 5.3.1 Software Versions Table 5-1 lists the mapping between software versions and BBU interconnec interconnection tion methods.
Table 5-1 Software 5-1 Software version Interconnection Method
BBU0
BBU1
Software Version
UCIU+UMPT
BBU3900
BBU3900
SingleRAN7.0 or later V100R007C00SPC280 or later if UMPTb boards are used for BBU interconnection.
BBU3900
BBU3910
SingleRAN9.0 or later
BBU3900
BBU3900
SingleRAN8.1 or later
BBU3900
BBU3910
SingleRAN9.0 or later
BBU3910
BBU3910
UMPT+UMPT
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5.3.2 Subracks and Hardware Configurations for the BBUs
For the installation locations and hardware configurations of BBU 0 and BBU 1 in each cabinet when a new multimode base station is deployed, see 3900 Series Base Station Hardware Description. In UCIU+UMPT interconnection, interconnection, the UCIU is controlled by only one single-mode main control board. Otherwise, ALM26274 Inter-System Board Object Configuration Configuration Conflict is reported. UCIU-related alarms are reported only to the singlemode main control board controlling the UCIU. When deploying a new Multimode base station, you are advised to comply with the following rules to set the control mode for the UCIU: In UMTS baseband capacity expansion scenarios, UMTS is preferred to control the UCIU. In other scenarios, the mode priority descends from GSM, to UMTS, and then to LTE. In capacity expansion scenarios, it is recommended that the controlling mode of the UCIU remain unchanged. Alternatively, you can modify Alternatively, modify the controlling mode based based on information provided provided in Table 5-2. Table 5-2 lists the mode recommended recommended for controlling the UCIU in each scenario.
Table 5-2 Mode 5-2 Mode recommended for controlling the UCIU in each scenario Mode
BBU0 Mode
BBU1 Mode
Mode Recommended for Controlling the UCIU
GU+UL
GU
UL
U
GU+U
GU
U
U
U+U
U
U
U
GU+L
GU
L
G
GL+U
GL
U
G
G*U*L+G*U*L
G*U*L
G*U*L
N/A
During new Multimode base station deployment, the mode deployment order remains unchanged no matter whether the mode controlling the UCIU is first deployed. However, However, it is recommended that the mode controlling the UCIU be first deployed. By doing this, UCIU-related alarms can be reported in time. t ime. 5.3.3 Transmission Modes
With BBU Interconnection, a base station supports the following: Independent Independe nt transmission Inter-BBU co-transmiss co-transmission ion
ependent Transmission In a triple-mode base station deployment scenario, each mode is connected to the transport network through its own port and is deployed in the same way as that in a single-mode base station. In UMTS baseband capacity expansion scenarios, both BBUs have a UMTS main control board, it is recommended that BBU 0 be connected to the RNC.
er-BBU Co-Transmission For engineering guidelines about co-transmission, see Common Transmission Feature Parameter Description. A multimode base station supports the following co-transmission co-transmission modes to implement inter-BBU co-transmission co-transmission:: UMPT-based co-transmission through backplane interconnection All modes except except the one controlling controlling the UMPT UMPT send their data data to the UMPT through through BBU ba backplanes ckplanes and and BBU interconnection signal signal cables. The co-transmission port on the UMPT is connected to the transport network, and the link between the port and transport network carries data of all the modes in the multimode base station.
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When deploying a multimode base station, first deploy the mode controlling the UMPT. Otherwise, other modes cannot be deployed. UTRPc-based co-transmission through backplane interconnection All modes send send their data to the UTRPc throug through h BBU back backplanes planes and B BBU BU interconn interconnection ection signal cables. cables. The co-transmission co-transmission port on the UTRPc is connected to the transport t ransport network, and the link between the port and transport network carries data of all the modes in the multimode base station. When deploying a multimode base station, first deploy the mode controlling the UTRPc. Otherwise, other modes cannot be deployed. In new multimode base station deployment scenarios, the UTRPc has the following configuration restrictions: The UTRPc can be controlled by only one mode whose main control board is installed in the same BBU as the UTRPc. When deploying a new multimode base station, it is recommended that you deploy the control mode of a UTRPc following a priority descending from LTE, to UMTS, and then to GSM. By default, the UTRPc is controlled by UMTS before delivery. Table 5-3 lists the mode recommended for controlling the UTRPc and the related mode deployment order when an
Multimode base station works in different modes.
Table 5-3 Mode 5-3 Mode recommended for controlling the UTRPc and related mode deployment order when the Multimode base station works in different modes UTRPc Installed in...
BBU0
BBU1
Mode
BBU0 Mode BBU1 Mode Mode Mode Recommended for Deployment Controlling the Order
Remarks
GU+L
GU
L
UTRPc U (by default before delivery)
GL+U
GL
U
L
LTE > GSM = UMTS
GU+UL
GU
UL
U (by default before delivery)
UMTS > GSM N/A = LTE
GU+U
GU
U
U (by default before delivery)
UMTS > GSM N/A
U+U
U
U
U (by default before delivery)
N/A
N/A
G*U*L+G*U*L G* G*U*L
G*U*L
N/A
N/A
N/A
GU+L
GU
L
L
LTE > GSM = UMTS
N/A
GL+U
GL
U
U
UMTS > GSM N/A = LTE
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UMTS > GSM You can also = LTE deploy GSM first. If so, then you must set the control mode of the UTRPc to GSM by adding the UTRPc data to the BTS configuration file. N/A
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Mode
Mode BBU0 Mode BBU1 Mode Mode Recommended for Deployment Order Controlling the UTRPc
Remarks
GU+UL
GU
UL
L
LTE > GSM = UMTS
N/A
GU+U
GU
U
Not supported
N/A
N/A
U+U
U
U
Not supported
N/A
N/A
G*U*L
Not supported
N/A
N/A
G*U*L+G*U*L G*U*L
In transmission mode transformation scenarios, you must minimize the impact on ongoing services when selecting a control mode for the UTRPc. For engineering guidelines about co-transmission, see the Common Transmission Feature Parameter Description. 5.3.4 CPRI-based Topologies
h Single-Mode RF Modules If single-mode RF modules are configured, chain, ring, and star topologies are supported. For UMTS baseband expansion, the ring topology is not supported between two BBUs, as shown in Figure 5-1. Figure 5-1 Ring 5-1 Ring topology not supported between two BBUs
In UMPT+UMPT interconnection, interconnection, only the star topology is supported for BBU 1 when the BBU 0 is configured with the GTMU, WMPT, or LMPT, as shown in Figure 5-2.
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Figure 5-2 Ring 5-2 Ring topology not supported between two BBUs
h Multi-Mode RF Modules If multi-mode RF modules are configured, a dual-star topology must be used to achieve inter-BBU SDR. Figure 5-3 and Figure 5-4 show two dual-star topology examples with GU RFUs and GU RRUs, respectively.
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Figure 5-3 Dual-star 5-3 Dual-star topology with RFUs (GU)
Figure 5-4 Dual-star 5-4 Dual-star topology with RRUs (GU)
NOTE: For details about the CPRI-based topologies and specifications of CRPI ports, see RF Unit and Topology Management Feature Parameter Description and CPRI MUX Feature Parameter Description . 5.3.5 Clocks localhost:7890/printtopics.html?time=Wed Jun 26 2019 13:46:22 GMT+0300 (Arabian Standard Time)
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With BBU Interconnection, a base station uses one of the t he following clocks: Independent reference clock Common reference clock
ependent Reference Clock In triple-mode base station deployment scenarios, the reference clock for each mode is the same as that in a singlemode base station. WBBPfIn UMTS baseband capacity expansion scenarios, both BBU 0 and BBU 1 have a WBBPf. The reference clock can be configured in either BBU.
mmon Reference Clock The common reference clock can be configured in either BBU 0 or BBU 1. The BBU configured with the common reference clock shares control data and clock signals with the other BBU through a BBU interconnection signal cable and the BBU backplane. For engineering guidelines about the common reference clock, see Common Reference Clock Parameter Description. Deployment 5.4.1 Deployment Requirement Requirements s
None. 5.4.2 Data Preparation
grade to Triple-Mode Base Stations Perform the following steps to plan the data: 1. Designate BBU0 and BBU1. Plan the cabinet number and subrack number for each BBU. If BBU0 and BBU1 are configured in the same cabinet, their subrack numbers must be different. If they are configured in different cabinets, their subrack numbers can be the same. 2. Plan the control links. The control link is logically CTRLLNK for NodeB or eNodeB, and BTSCTRLLNK for GBTS. Physically, the control link is the BBU interconnection signal cable between the UCIU and UMPT. The two ends of each CTRLLNK/BTSCTRLLNK must be designated. By default, BBU1 is the local node and BBU0 is the upper-level node. The number of each CTRLLNK/BTSCTRLLNK for the base station must be unique. The link numbers of all the CTRLLNKs/BTSCTRLLNKs need to be planned. A CTRLLNK/BTSCTRLL CTRLLNK/BTSCTRLLNK NK needs to b be e added for ea each ch mode of the base station.
Table 5-4 Parameters 5-4 Parameters for CTRLLNK and BTSCTRLLNK Parameter Name
Local Link No.
Parameter ID
Setting Notes
Data Source
LN
Number of Network plan CTRLLNK/BTSCTRLLNK GUI value range: 0 to 255 Recommended value: 0, 1
Local Cabinet No.
CN
Cabinet number of BBU 1 Network plan GUI value range: 0 to 7
Local Subrack No.
SRN
Subrack number of BBU
Network plan
1 GUI value range: 0 to 1
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Parameter Name
Local Slot No.
Parameter ID
Setting Notes
Data Source
SN
Slot number of the BBU 1 Network plan UMPT to which the BBU interconnection signal cable is connected If BBU Interconnection is applied, set this parameter to 6 or 7 based on site conditions.
Upper Cabinet No.
UPCN
Cabinet number of BBU 0 Network plan GUI value range: 0 to 7
Upper Subrack No.
UPSRN
Subrack number of BBU 0 GUI value range: 0 to 1
Network plan
Upper Slot No.
UPSN
Slot number of the BBU 0 Network plan UCIU or UMPT to which the BBU interconnection signal cable is connected If BBU Interconnection is applied, set this parameter to 4, 0, or 7 based on site conditions.
Upper Port No.
UPPT
Port number of the BBU 0 Network plan UCIU to which the BBU interconnection signal cable is connected. Values 0 to 4 indicate the ports M0 to M4 on the UCIU, and value 8 indicates the CI port on the UMPT. GUI value range: 0 to 4, 6~8
TS Baseband Capacity Expansion Perform the following steps to plan the data: 1. Designate BBU0 and BBU1. Plan the cabinet number and subrack number for each BBU. If BBU0 and BBU1 are configured in the same cabinet, their subrack numbers must be different. If they are configured in different cabinets, their subrack numbers can be the same. 2. Plan the control links. For details, see 2.2 Triple-Mode Base Station Deployment. 3. Plan the baseband processing link. The baseband processing link is logically BBPLNK. Physically, the baseband processing link is the BBU interconnection signal cable between WBBPfs or UBBPds boards. The two ends of the BBPLNK must be designated. Either end of a BBPLNK can be configured as the link head. It is recommended that you configure the end on the BBU 0 side as the link head. The default port number of the link head or tail is 6. The number of the BBPLNK needs to be planned. Currently, only one BBPLNK is supported.
Table 5-5 Parameters 5-5 Parameters for BBPLNK Parameter Name
Parameter ID
Setting Notes
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Parameter Name
Link No.
Parameter ID
Setting Notes
Data Source
LN
Number of BBPLNK Network plan GUI value range: 0 to 255 Recommended value: 0
Head Cabinet No.
HCN
Cabinet number of the link head GUI value range: 0 to 7
Network plan
Head Subrack No.
HSRN
Subrack number of the link head GUI value range: 0 to 1
Network plan
Head Slot No.
HSN
Slot number of the link head GUI value range: 0 to 5 When the BBU is BBU3900, HSN in the BBPLINK MO must be set to 2 or 3
Network plan
Head Port No.
HPN
Default value: 6
Network plan
TCN
Cabinet number of the
Network plan
Tail Cabinet No.
link tail GUI value range: 0 to 7 Tail Subrack No.
TSRN
Subrack number of the link end GUI value range: 0 to 1
Network plan
Tail Slot No.
TSN
Slot number of the link end GUI value range: 0 to 5 When the BBU is BBU3900, HSN in the BBPLINK MO must be set to 2 or 3
Network plan
Tail Port No.
TPN
Default value: 6
Network plan
5.4.3 Initial Configuration
The Configuration Management Express (CME) is recommended when initially configuring a new base station. Table lists references for initial configuration procedure procedure..
Scenario
Reference Document for Initial Configuration Procedure
GU+L
See 3900 Series Base Station Initial Configuration Guide. Find Procedure Procedure through through the following path: 3900 Series Base Station Initial Configuration Guide > Guide > 3900 Series Base Station Initial Configuration (Based on the CME) > CME) > Creating Base Stations > Stations > Creating a Single Separate-MPT Multimode Base Station > Station > Configuring Device Data > Data > Configuring the Cabinet and BBU Data, Configuring BBU Interconnection Links. Data, Links.
GL+U GU+UL GU+U
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Uc+eU S nario
Seefeer3900 Series R ence D ocumeBase nt for Station Initial CInitial onfiguConfiguration ration Procedure Guide.. Find Procedure Guide Procedure through through the following path: 3900 Series Base Station Initial Configuration Guide > Guide > 3900 Series Base Station Initial Configuration (Based on the CME) > CME) > Creating Base Stations > Stations > Creating a NodeB > NodeB > Creating a Single NodeB > NodeB > Configuring NodeB Device Data > Data > Configuring the Cabinet and BBU Data, Configuring BBU Interconnection Links. Links.
G*U*L + G*U*L
See 3900 Series Base Station Initial Configuration Guide.Series Find Procedure Procedure through through following path: 3900 Base Station Initialthe Configuration Guide > Guide > 3900 Series Base Station Initial Configuration (Based on the CME) > CME) > Creating Base Stations > Stations > Creating a Single Co-MPT Base Station > Station > Configuring Device Data > Data > Configuring the Cabinet and BBU Data, Configuring BBU Interconnection Links. Links.
5.4.4 Activation Observation
After the initial configuration configuration is comp complete, lete, you can observe observe the s status tatus of the CTR CTRLLNK/BTSCT LLNK/BTSCTRLLNK RLLNK and BBPLNK at either the local or remote end. For alarms related to BBU interconnection interconnection,, see 5.7 Troubleshooting. At the local end: end: Check the status of the Mx indicator on the UCIU or the status of the CI indicator on the UMPT to determine whether the CTRLLNK/BTSCTRLLNK is operating correctly. If the Mx indicator is green, the CTRLLNK/BTSCTRLLNK is operating correctly. If the CI indicator is green, the CTRLLNK/BTSCTRLLNK is operating correctly. Check the status of the HEI indicator on the WBBPf/UBBPd to determine whether the BBPLNK is operating correctly. If the HEI indicator is green, the BBPLNK is operating correctly.
NOTE: An Mx port can can be the M0, M1, M2, M2, M3, or M4 port on the UCIU. At the remote end: end: On the U2000 device panel, you can query the master/slave indication of the BBU interconnection cable between UMPT boards to check whether the cable is correctly connected. The yellow end is the master port. On the U2000 maintenance console or the LMT, you can run the LST CTRLLNK or CTRLLNK or LST BTSCTRLLNK command to query the cabinet number, subrack number, slot number, and port number at both ends of the BBU interconnection signal cable. Run the DSP CTRLLNKSTAT or CTRLLNKSTAT or DSP BTSCTRLLNKSTA BTSCTRLLNKSTAT T command to check whether the status of the CTRLLNK/BTSCTRLLNK is normal.
NOTE: The status can be queried only if the interconnection boards and ports are configured and the command is executed in the supported mode. Run the DSP BBPLNK command to check whether a BBPLNK is configured as planned. Adjustment Examples 5.5.1 Adjustment from a GU Base Station to a GU+L Base Station
The following is examples of adjustment from a GU dual-mode base station to a GUL triple-mode base station.
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Interconnection (UCIU+UMPT) is Scenario 1: Figure 5-5 shows the hardware configuration before and after BBU Interconnection implemented. Figure 5-5 Hardware 5-5 Hardware changes in adjustment from a GU base station to a GU+L base station
New hardware components Before configuring data, ensure that the following hardware components are available.
New hardware components
Quantity
BBU subrack
1
UMPT
1
LBBP
1
UCIU
1
BBU interconnection signal cable
1
SFP optical modules
2
CPRI cables, transmission cables, clock signal cables, power cables, and monitoring signal cables
Depending on the site plan
Adjust hardware. hardware. 1. Install the UMPT_L and LBBP in BBU 1. Then, connect the power cables, monitoring signal cables, transmission cables, clock signal cables, and CPRI cables to the UMPT_L and LBBP. 2. Install a UCIU in BBU 0. 3. BBU interconnection signal cable to connect port M0 on the UCIU in BBU 0 and the CI port on the UMPT_L in BBU 1.
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NOTE: When remove and reinstall BBU interconnection cable, you need to reset the main processing board in BBU 1. Modify configuration data. You can modify data on the CME. For details, see 3900 Series Base Station Initial Configuration Guide > 3900 Series Base Station Initial Configuration Configuration (CME-based) > (CME-based) > Creating Base Stations > Stations > Creating Separate-MPT Multimode Base Stations > Stations > Creating a Single Separate-MPT Base Station > Station > Configuring Device Data About the SeparateMPT Base Station > Station > Configuring Cabinet, Subrack, and BBU Data and Data and Configuring BBU Interconnection Links. Links. The data reconfiguration procedure using MML commands is as follows: 1. On the GSM side, run the MML command ADD BTSBRD to add a UCIU for BBU 0. 2. On the LTE side, run the MML command ADD CABINET to add a cabinet for BBU 1. 3. On the LTE side, run the MML command ADD SUBRACK to add a subrack for BBU 1. BRD to add a UMPT for BBU 1. 4. On the LTE side, run the MML command ADD BRD to 5. On the LTE side, run the MML command ADD BRD to add an LBBP for BBU 1. 6. On the LTE and UMTS side, run the MML command ADD CTRLLNK to CTRLLNK to add a control link. On the GSM side, run the MML command ADD BTSCTRLLNK to BTSCTRLLNK to add a control link. For details about paramete parameterr settings, see Table 5-4. Scenario 2: Figure 5-6 shows the hardware configuration before and after BBU Interconnection Interconnection (UMPT+UMPT) is implemented. Figure 5-6 Hardware 5-6 Hardware changes in adjustment from a GU base station to a GU+L base station
New hardware components Before configuring data, ensure that the following hardware components are available.
New hardware components
Quantity
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New hardware components
Quantity
BBU subrack
1
UMPT
1
LBBP
1
BBU interconnection signal cable with a Master 1 color-coding at one end CPRI cables, cables, clock signal cables, powertransmission cables, and monitoring signal cables
Depending on the site plan
Adjust hardware. hardware. 1. Install the UMPT_L and LBBP in BBU 1. Then, connect the power cables, monitoring signal cables, transmission cables, clock signal cables, and CPRI cables to the UMPT_L and LBBP. 2. Use a BBU interconnection cable with a Master color-coding at one end to connect BBU 0 and BBU 1. Connect the end with the Master color-coding to the CI port on the UMPT_U in BBU 0 and the other end to the CI port on the UMPT_L in BBU 1.
NOTE: The interconnection signalensure cable connecting two UMPTs in thecolor-coding BBUs has a connects Master color-coding end. BBU When installing the cable, that the end with the Master to a CI portat inone BBU 0 and the other end connects to a CI port in BBU 1. In UMPT+UMPT interconnection scenarios where only one UMPT connects to external transmission equipment, reset the UMPT connecting to external transmission equipment equipment by pressing the reset button on the UMPT or removing and then inserting the UMPT after cable adjustment. When remove and reinstall BBU interconnection cable, you need to reset the main processing board in BBU 1. Modify configuration data. You can modify data on the CME. For details, see 3900 Series Base Station Initial Configuration Guide > 3900 Series Base Station Initial Configuration Configuration (CME-based) > (CME-based) > Creating Base Stations > Stations > Creating Separate-MPT Multimode Base Stations > Stations > Creating a Single Separate-MPT Base Station > Station > Configuring Device Data About the SeparateMPT Base Station > Station > Configuring Cabinet, Subrack, and BBU Data and Data and Configuring BBU Interconnection Links. Links. The data reconfiguration procedure using MML commands is as follows: 1. On the LTE side, run the MML command ADD CABINET to add a cabinet for BBU 1. 2. On the LTE side, run the MML command ADD SUBRACK to add a subrack for BBU 1. 3. On the LTE side, run the MML command ADD BRD to BRD to add a UMPT for BBU 1. 4. On the LTE side, run the MML command ADD BRD to add an LBBP for BBU 1. 5. On the LTE and UMTS side, run the MML command ADD CTRLLNK to CTRLLNK to add a control link. On the GSM side, run the MML command ADD BTSCTRLLNK to BTSCTRLLNK to add a control link. For details about paramete parameterr settings, see Table 5-4. 5.5.2 Adjustment from a G*U*L Triple-Mode Base Station to a G*U*L+G*U*L Triple-Mode Base Station
The following is examples of adjustment from a G*U*L triple-mode base station to a G*U*L+G*U*L triple-mode base station. Figure 5-7 shows the hardware configuration before and after BBU Interconnection Interconnection (UMPT+UMPT) is implemented.
Figure 5-7 Hardware 5-7 Hardware changes in adjustment from a G*U*L triple-mode base station to a G*U*L + G*U*L triple-mode base station
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New hardware components Before configuring data, ensure that the following hardware components are available.
New Hardware Component
Quantity
BBU subrack
1
UMPT_GUL
1
UBBP
1
BBU interconnection signal cable with a Master 1 color-coding at one end CPRI cables, transmission cables, clock signal cables, power cables, and monitoring signal cables
Depending on the site plan
Adjust hardware. hardware. 1. Install the UMPT_GUL and UBBP in BBU 1. Then, connect the power cables, monitoring signal cables, transmission cables, clock signal cables, and CPRI cables to the UMPT_GUL and LBBP. 2. Use a BBU interconnection cable with a Master color-coding at one end to connect BBU 0 and BBU 1. Connect the end with the Master color-coding to the CI port on the UMPT_GUL in BBU 0 and the other end to the CI port on the UMPT_GUL in BBU 1. Modify configuration data. For the procedure for reconfiguring data on the CME, see 3900 Series Base Station Initial Configuration Guide . Find Procedure through Procedure through the following path: 3900 Series Base Station Initial Configuration Guide Guide > > 3900 Series Base Station Initial Configuration (Based on the CME) > CME) > Creating Base Stations > Stations > Creating Co-MPT Base Station > Station >
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Creating a Single Co-MPT Base Station > Station > Configuring Device Data About Co-MPT Base Station > Station > Configuring the Cabinet and BBU Data, Configuring BBU Interconnection Links. Links . The data reconfiguration procedure using MML commands is as follows: 1. Run the MML command ADD CABINET to add a cabinet for BBU 1. 2. Run the MML command ADD SUBRACK to add a subrack for BBU 1. 3. Run the MML command ADD BRD to add a UMPT_GUL for BBU 1. 4. Run the MML command ADD BRD to add an UBBP for BBU 1. 5. Run the MML command ADD CTRLLNK to add a control link. For parameter settings, see the setting description in Table 5-4. 5.5.3 UMTS Baseband Capacity Expansion from a GU+L to a GU+UL Triple-Mode Base Station
Perform the following steps to expand UMTS baseband capacity: 1. Add a control link for each mode. 2. On the UMTS side, add a cabinet to BBU1. 3. On the UMTS side, add a subrack to BBU1. 4. On the UMTS side, add a baseband processing link between BBU0 and BBU1.
NOTE: The BBU interconnection signal cable refers to the one used to connect any of ports M0 through M4 on the UCIU to the CI port on the UMPT. The Huawei QSFP electrical cable is used to connect the WBBPf boards in two BBUs. Scenario 1: From GU+L triple-mode base station (with WBBPf in BBU0 slot 3) to GU+UL triple-mode base station Figure 5-8 shows the hardware before and after BBU Interconnection. Interconnection.
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Figure 5-8 Hardware 5-8 Hardware changes for UMTS baseband capacity expansion (scenario 1)
New hardware components Have the following new hardware components ready:
Hardware Component
Quantity
Remarks
WBBPf
1
-
UMPT
1
-
BBU interconnection signal cable
1
connects the M port on the UCIU to the CI port on the UMPT
Multi-mode SFP optical modules
2
-
QSFP cables provided by Huawei
1
connects the HEI port on two WBBPf boards
Hardware installation
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1. Install a UMPT_U and a WBBPf in BBU 1. 2. Use a BBU interconnection signal cable to connect the M0 port on the UCIU in BBU 0 to the CI port on the UMPT_L in BBU 1. 3. Use a Huawei QSFP electrical cable to connect the HEI port on the WBBPf in slot 2 in BBU 1 to the HEI port on the WBBPf in slot 3 in BBU 0. Data reconfiguration For the procedure for reconfiguring data on the CME, see 3900 Series Base Station Initial Configuration G uide. Find Procedure through Procedure through the following path: 3900 path: 3900 Series Base Station Initial Configuration Guide > Guide > 3900 Series Base Station Initial Configuration (Based on the CME) > CME) > Creating Base Stations > Stations > Creating a Single Separate-MPT Multimode Base Links. Station Station > Data > Configuring the Cabinet and BBU Data, Configuring BBU Interconnection Links . > Configuring Device Data > See U2000 Online Help for detailed operations of exporting CME configurations as a configuration script, find procedure through the following path: CME Management > CME Guidelines > System Management > Script Management > Exporting Incremental Scripts from the Planned Data Area. See U2000 Online Help for detailed operations of activating CME configurations, find procedure through the following path: CME Management > CME Guidelines > System Management > Managing the Script Executor. The data reconfiguration procedure using MML commands is as follows: 1. On the UMTS and LTE sides, run the MML command ADDCTRLLNK to add a control link. On the GSM side, run the MML command ADD BTSCTRLLNK to add a control link. For parameter settings, see the setting description in Table 5-4. ADD CTRLLNK: LN=1, CN=0, SRN=1, SN=6, UPCN=0, UPSRN=0, UPSN=4, UPPT=1 ADD BTSCTRLLNK:IDTYPE=BYID, BTSCTRLLNK:IDTYPE=BYID, BTSID=563, LN=1, CN=0, SRN=1, SN=6, UPCN=0, UPSRN=0, UPSN=4, UPPT=1 2. On the UMTS side, run the MML command ADD CABINET to add a subrack for BBU 1. 3. On the UMTS side, run the MML command ADD SUBRACK to add a subrack for BBU 1. 4. On the UMTS side, run the MML command ADD BRD to add a UMPT_U for BBU 1. 5. On the UMTS side, run the MML command ADD BRD to add a WBBPf for BBU 1. 6. On the UMTS side, run the MML command ADD BBPLNK to add a baseband processing link. For parameter settings, see the setting description in Table 5-5 ADD BBPLNK: LN=0, HCN=0, HSRN=0, HSN=3, TCN=0, TSRN=1, TSN=2
NOTE: Uplink resource groups cannot be configured across BBUs. Downlink resource groups can be configured across BBUs. The number of resource groups depends on the actual planning for each site. Scenario 2: From GU+L triple-mode base station station (with the WBBPd in slot 3 of BBU0 and slot 2 of BBU0 empty) to GU+UL triple-mode base station Figure 5-9 shows the hardware before and after BBU Interconnection. Interconnection.
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Figure 5-9 Hardware 5-9 Hardware changes for UMTS baseband capacity expansion (scenario 2)
New hardware components Have the following new hardware components ready:
Hardware Component
Quantity
Remarks
WBBPf
2
-
UMPT
1
-
BBU interconnection signal cable
1
connects the M port on the UCIU to the CI port on the UMPT
Multi-mode SFP optical modules
2
-
QSFP cables provided by Huawei
1
connects the HEI port on two WBBPf boards
Hardware installation
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1. Install a UMPT_U and a WBBPf in BBU 1. 2. Install a WBBPf in slot 2 in BBU 0. 3. Use a BBU interconnection signal cable to connect the M0 port on the UCIU in BBU 0 to the CI port on the UMPT_L in BBU 1. 4. Use a Huawei QSFP electrical cable to connect the HEI port on the WBBPf in slot 2 in BBU 1 to the HEI port on the WBBPf in slot 3 in BBU 0. Data reconfiguration For the procedure for reconfiguring data on the CME, see 3900 Series Base Station Initial Configuration G uide. Find Procedure through Procedure through the following path: 3900 path: 3900 Series Base Station Initial Configuration Guide > Guide > 3900 Series Base Station Initial Configuration (Based on the CME) > CME) > Creating Base Stations > Stations > Creating a Single Separate-MPT Multimode Base Station > Station > Configuring Device Data > Data > Configuring the Cabinet and BBU Data, Configuring BBU Interconnection Links. Links. See U2000 Online Help for detailed operations of exporting CME configurations as a configuration script, find procedure through the following path: CME Management > CME Guidelines > System Management > Script Management > Exporting Incremental Scripts from the Planned Data Area. See U2000 Online Help for detailed operations of activating CME configurations, find procedure through the following path: CME Management > CME Guidelines > System Management > Managing the Script Executor. The data reconfiguration procedure using MML commands is as follows: 1. On the UMTS and LTE sides, run the MML command ADDCTRLLNK to add a control link. On the GSM side, run the MML command ADD BTSCTRLLNK to add a control link. For parameter settings, see the setting description in Table 5-4. ADD CTRLLNK: LN=1, CN=0, SRN=1, SN=6, UPCN=0, UPSRN=0, UPSN=4, UPPT=1 ADD BTSCTRLLNK:IDTYPE=BYID, BTSCTRLLNK:IDTYPE=BYID, BTSID=563, LN=1, CN=0, SRN=1, SN=6, UPCN=0, UPSRN=0, UPSN=4, UPPT=1 2. On the UMTS side, run the MML command ADD BRD to add a WBBPf for BBU 0. 3. On the UMTS side, run the MML command ADD CABINET to add a subrack for BBU 1. 4. On the UMTS side, run the MML command ADD SUBRACK to add a subrack for BBU 1. 5. On the UMTS side, run the MML command ADD BRD to add a UMPT_U for BBU 1. 6. On the UMTS side, run the MML command ADD BRD to add a WBBPf for BBU 1. 7. On the UMTS side, run the MML command ADD BBPLNK to add a baseband processing link. For parameter settings, see the setting description in Table 5-5. ADD BBPLNK: LN=0, HCN=0, HSRN=0, HSN=2, TCN=0, TSRN=1, TSN=2
NOTE: Uplink resource groups cannot be configured across BBUs. Downlink resource groups can be configured across BBUs. The number of resource groups depends on the actual planning for each site. Scenario 3: From GU+L triple-mode base station (with WBBPds in slots 2 and 3 of BBU0) to GU+UL triplemode base station Figure 5-10shows the hardware before and after BBU Interconnection.
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Figure 5-10 Hardware 5-10 Hardware changes for UMTS baseband capacity expansion (scenario 3)
New hardware components Have the following new hardware components ready:
Hardware Component
Quantity
Remarks
WBBPf
2
-
UMPT
1
-
BBU interconnection signal cable
1
connects the M port on the UCIU to the CI port on the UMPT
Multi-mode SFP optical modules
2
-
QSFP cables provided by Huawei
1
connects the HEI port on two WBBPf boards
Hardware installation
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1. Install a UMPT_U and a WBBPf in BBU 1. 2. Remove the CPRI fiber optic cable from the WBBPd in slot 3 in BBU 0 and move the WBBPd to slot 0 in BBU 1. 3. Install the WBBPf in slot 3 in BBU 0 4. Connect the fiber optic cable removed in Step 4 to the WBBPf in slot 3 in BBU 0. 5. Use a BBU interconnection signal cable to connect the M0 port on the UCIU in BBU 0 to the CI port on the UMPT_L in BBU 1. 6. Use a Huawei QSFP electrical cable to connect the HEI port on the WBBPf in slot 2 in BBU 1 to the HEI port on the WBBPf in slot 3 in BBU 0. Data reconfiguration For the procedure for reconfiguring data on the CME, see 3900 Series Base Station Initial Configuration G uide. Find Procedure through Procedure through the following path: 3900 path: 3900 Series Base Station Initial Configuration Guide > Guide > 3900 Series Base Station Initial Configuration (Based on the CME) > CME) > Creating Base Stations > Stations > Creating a Single Separate-MPT Multimode Base Station > Station > Configuring Device Data > Data >Configuring Configuring the Cabinet and BBU Data, Configuring BBU Interconnection Links. Links. See U2000 Online Help for detailed operations of exporting CME configurations as a configuration script, find procedure through the following path: CME Management > CME Guidelines > System Management > Script Management > Exporting Incremental Scripts from the Planned Data Area. See U2000 Online Help for detailed operations of activating CME configurations, find procedure through the following path: CME Management > CME Guidelines > System Management > Managing the Script Executor. The data reconfiguration procedure using MML commands is as follows: 1. On the UMTS and command LTE sides,ADD run the MML command ADDCTRLLNK addparameter a control link. On the side, run the MML BTSCTRLLNK to add a control link.toFor settings, seeGSM the setting description in Table 5-4. ADD CTRLLNK: LN=1, CN=0, SRN=1, SN=6, UPCN=0, UPSRN=0, UPSN=4, UPPT=1 ADD BTSCTRLLNK:IDTYPE=BYID, BTSCTRLLNK:IDTYPE=BYID, BTSID=563, LN=1, CN=0, SRN=1, SN=6, UPCN=0, UPSRN=0, UPSN=4, UPPT=1 2. On the UMTS side, run the MML command ADD CABINET to add a subrack for BBU 1. 3. On the UMTS side, run the MML command ADD SUBRACK to add a subrack for BBU 1. 4. On the UMTS side, run the MML command ADD BRD to add a UMPT_U for BBU 1. 5. On the UMTS side, run the MML command ADD BRD to add a WBBPf for BBU 1. 6. On the UMTS side, run the MML command ADD BRD to add a WBBPd for BBU 1. 7. On the UMTS side, run the MML command ADD BBPLNK to BBPLNK to add a baseband processing link. For parameter settings, see the setting description in Table 5-5. ADD BBPLNK: LN=0, HCN=0, HSRN=0, HSN=3, TCN=0, TSRN=1, TSN=2
NOTE: Uplink resource groups cannot be configured across BBUs. Downlink resource groups can be configured across BBUs. The number of resource groups depends on the actual planning for each site. 5.5.4 Interconnection Adjustment in a GU+L Triple-Mode Base Station
This section uses the interconnection adjustment from UCIU+UMPT to UMPT+UMPT in a GU+L triple-mode base station as an example.
NOTE: Inter-BBU services are interrupted when the interconnection method is adjusted. The mode served by the UMPT used for BBU interconnection needs to be redeployed. Scenario: Figure 5-11 shows the adjustment from UCIU+UMPT interconnection to UMPT+UMPT interconnec interconnection tion in a GU+L triple-mode base station.
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Figure 5-11 Adjustment 5-11 Adjustment from UCIU+UMPT interconnection to UMPT+UMPT interconnection in a GU+L triple-mode base station
New hardware components Before configuring data, get the following hardware components available:
New Hardware Component
Quantity
UMPTb
One
BBU interconnection cable with a color-coding at one end
One
Hardware installation 1. Remove the fiber optic cable between BBU 0 and BBU 2, optical module from the UCIU in BBU 0, and optical module from the CI port on the UMPT.
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2. Remove the UCIU from BBU 0. 3. Remove the WMPT from BBU 0. 4. Remove the UMPTa from BBU 1. Install the UMPTa in the slot that originally holds the WMPT in BBU 1. Skip this step if a UMPTb is configured in BBU 1 instead of UMPTa. 5. Install the UMPTb in the slot that t hat originally holds a UMPT board in BBU 1. If a UMPTb has been installed in BBU 1, install the UMPTb in the slot that originally holds a WMPT in BBU 0. 6. Connect the end with a Master color-coding on the BBU interconnection signal cable to the CI port on the UMPT in BBU 0, and the other end to the CI port on the UMPTb in BBU 1.
NOTE:
After adjusting the the interconnec interconnection tion method, res reset et the main control control board in BBU 1. 1. Data reconfiguration For the operation procedure for data reconfiguration on the CME, see 3900 Series Base Station Initial Configuration Guide. Find Procedure Procedure through through the following path: 3900 path: 3900 Series Base Station Initial Configuration Guide > Guide > 3900 Series Base Station Initial Configuration (CME-based) (CME-based) > > Creating Base Stations > Stations > Creating Separate-MPT Multimode Base Stations > Stations > Creating a Single Separate-MPT Base Station > Station > Configuring Device Data About the Separate-MPT Base Station > Station > Configuring BBU Interconnection Links. Links. The configuration procedure using MML commands is as follows: 1. On the GSM, UMTS, and LTE sides, run the RMV RMV CTRLLNK command (for NodeB and eNodeB) or RMV BTSCTRLLNK (for BTSCTRLLNK (for GBTS) to remove the infrastructure interconnection link. For parameter settings, see the setting description in Table 5-4. 2. On the GSM side, run the RMV BTSBRD command to remove the UCIU from BBU 0. 3. On the GSM, UMTS, and LTE sides, run the ADD ADD CTRLLNK command (for NodeB and eNodeB) to add a control link. On the GSM side, run the ADD BTSCTRLLNK (for BTSCTRLLNK (for GBTS)command GBTS)command to add an infrastructure interconnection interconnec tion link. For parameter settings, see the setting description in Table 5-4. Performance e Optimization Performanc
N/A Troubleshooting Table 5-6 lists the alarms related to BBU Interconnection. For details, see the related alarm reference documents.
Table 5-6 T 5-6 Table able Alarms related to BBU Interconnection Alarm ID
Alarm Name
26310
Inter-BBU Optical Module Fault
26311
Inter-BBU Optical Module Not in Position
26312
Inter-BBU Optical Module Receive Failure
26313
Inter-BBU Optical Module Transmit Failure
26314
Inter-BBU Port Failure
26315
Inter-BBU Port Connection Error
26240
BBU Topology and Configuration Mismatch
26274
Inter-System Board Object Configuration Conflict
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Reference Documents
1. Common Transmission Feature Parameter Description 2. Common Clock Feature Parameter Description 3. MML Command Reference 4. Parameter Reference 5. MO Reference 6. Alarm Reference 7. 3900 Series Base Stations Initial Configuration 8. 3900 Series Base Station Technical Description 9. 3900 Series Base Station Commissioning Guide 10. 3900 Series Base Station Hardware Description 11. 3900 Series Base Station Initial Configuration Guide 12. RF Unit and Topology Management
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