Introduction to New Functions of 3900 Series Dual-Mode Base Station -20090223-IsSUE1.0-B

HUAWEI TECHNOLOGIES CO., LTD.

www.huawei.com

Huawei Confidential

Security Level: Internal Use 23/4/13

英文标题 :40-47pt

副标题 :26-30pt

字体颜色 : 反白内部使用字体 :

FrutigerNext LT Medium

外部使用字体 : Arial

中文标题 :35-47pt

字体 : 黑体副标题 :24-28pt

字体颜色 : 反白字体 : 细黑体

Introduction to New Functions of 3900 Series Dual-Mode Base Station

Wireless Case and Training

ISSUE1.0

HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential

3900 series Dual-Mode Base Station features a multi-

mode modular design and supports three working

modes: GSM mode, GSM&UMTS dual mode, and

UMTS mode through configuration of different

software. It mainly introduces the two scenarios of

dual-mode base station and new functions.


Know the two scenarios of dual-mode base station

Know the new functions and features of dual-mode

base station


Chapter 1 Scenarios of 3900 Series Dual-Mode

Base station

Chapter 2 New Functions of 3900 Series Dual-

Mode Base Station Introduction


Scenarios of 3900 Series Dual-ModeBase station The co-cabinet scenario

The BBU is configured with the GSM boards and UMTS boards. The RF

modules of the GSM system and the UMTS system are configured separately.

The transmission modules of the GSM system and the UMTS system are

independent of each other. The common parts inside the cabinet are controlled by the GSM and UMTS

system.

The dual-mode scenario Based on the unified hardware platform, the 3900 series supports three

working modes: GSM mode, GSM&UMTS dual mode, and UMTS mode

through configuration of different software.


Chapter 1 Solutions of 3900 Series Dual-Mode

Base station

Chapter 2 New Functions of 3900 Series Dual-

Mode Base Station Introduction


Section 1 MRRU/MRFU Supports Three Working Mode

Section 2 Interconnection of CPRI Port

Section 3 Co-Transmission Function

Section 4 Co-Monitoring System

Section 5 Support Configuration of XRRU/XRFU

Section 6 Function of Sharing the Clock Source


MRRU/MRFU Supports Three Working Mode (The Dual-Mode Scenario)

MRRU/MRFU features the advanced platform-based architecture. It

supports three working modes: GSM mode, GSM&UMTS dual mode, and

UMTS mode. When the MRRU/MRFU works in GSM Only mode, it must be configured as

RRU3008/GRFU. When the MRRU/MRFU works in UMTS Only mode, it must be configured as

SRRU/WRFU. When the MRRU/MRFU works in GSM&UMTS mode, it must be configured as

MRRU/MRFU.


Obtain the software version

Obtain software version from different directory when the TRX works in different

mode.

Board Working Mode Software Version

MRRU/MRFU GSM&UMTS UMTS software Package

GSM GSM software Package

UMTS UMTS software Package

MRRU/MRFU Supports Three Working Mode (The Dual-Mode Scenario)


Interconnection of CPRI Port(The Dual-Mode Scenario)

Functions When the GTMU is used in the GSM&UMTS scenario, three CPRI ports (0, 1,

and 2) on the GTMU of the GSM system can be connected to any of the CPRI

ports on the WBBP of the UMTS system, and the other three CPRI ports (3, 4,

and 5) can be connected to the RXU .


Logical figure



Data Flowing

Downlink data which is converged in GTMU delivered from the CPRI port

connected to RXU. For example: Downlink data in SFP0 from WBBP

convergences the data of SFP3 in GTMU and then delivered it from SFP3.

Uplink data should be delivered to the

corresponding port of GTMU and WBBP

at the same time. For example: Uplink data

in SFP3 should be delivered to GTMU

board. The data also should be delivered

to SFP0 in GTMU and than to SFP0 in

WBBP at the same time.



Interconnection Principles of CPRI Port Only 0-2 CPRI ports on the GTMU can be connected to the CPRI ports on the

WBBP. 3-5 CPRI ports can be connected to the RXURU3908 . Only 0-2 CPRI ports can be switched to any of the 3-5 CPRI ports. (It needs

configuration) 0-2 CPRI ports on the GTMU can be connected to any of the CPRI ports on the

WBBP. (It needn’t configuration) CPRI ports which are not configured as SFP ports can be connected to RXU

as common port.

Notes The data is converged in GTMU. The server of UMTS will be affected when the

GTMU is faulty or reset. Only 0-2 CPRI ports can be switched to any of the 3-5 CPRI ports. If the site

transition from GO （ GSM Only ） to GU （ GSM&UMTS ） , it needs to

adjust former physical connection and data configuration.



Function The GSM system and the UMTS system share the transmission resources.

Through the TDM timeslot cross connection, the backplane bus enables

transmission bandwidth sharing between the GSM system and the UMTS

system. This is called TDM Over Package (TOP).

Co-Transmission Function(Co-Cabinet Scenario/Dual-Mode Scenario)


Application Scenario When the distance of BSC and RNC is near or BSC and RNC are in the same

equipment room, the co-transmission can be used. When co-transmission is used,

one cable carries two mode signals of GSM and UMTS which can save transmission

cable and reduce the cost. When the distance of BSC and RNC is far, the co-transmission cannot be used.

co-transmission non co-transmission



The co-transmission is used in the following scenarios: Scenario 1: Transmission Resource Sharing of the UMTS System with the GSM

System. Scenario 2: Transmission Resource Sharing of the GSM System with the UMTS

System.

Scenario 1 Scenario 2



Transmission Resource Sharing of the UMTS System with the

GSM System Cable Connections: Connect one pair of E1 wires on the WMPT to the

RNC,

and then connect another pair (or other pairs) of E1 wires to the BSC.E1 cable

connected to RNC



Transmission Resource Sharing of the GSM System with the UMTS

System Cable Connections: Connect one pair of E1 wires on the GTMU to the BSC,

and then connect another pair (or other pairs) of E1 wires to the RNC.E1 cable

connected to BSC



Notes The service of one E1 cable on the panel can be transferred to only one

E1 cable on the backplane through the TDM timeslot cross but not several

E1 cables on the backplane. The switch between one E1 cable on the panel and one E1 cable on the

backplane doesn’t support timeslot cross. That means the timeslot on the

panel E1 cable must be switch to the same timeslot on the backplane E1 0 E1 that carries OML must be connected to BSC in current GSM version.

So it cannot realized all transmission resource sharing of the UMTS

system with the GSM system. The E1 cable is unification numbered on both panel and backplane of

GTMU. The E1 number on the panel is 0-3 and on the backplane is 16-19.



Co-Monitoring system (Co-Cabinet Scenario/Dual-Mode Scenario) Function

The monitoring system such as PMU, EMU belongs to public monitoring

resource which can be shared in two working mode. The dual-mode base

station supports to configuration and maintenance the public monitoring

resource in two working mode. Equipment management module (or called monitoring software) manages public

parts, data configuration of GSM and UMTS and reports alarm information of

public parts according to a preconcerted rule.


Notes For the public monitoring system can be configured by two working mode, the

data configuration must be consistent. Otherwise it will generate configuration

conflict alarm. It suggest set a set of uniform default value according to the practice of dual-

mode site.

Co-Monitoring system (Co-Cabinet Scenario/Dual-Mode Scenario)


Support Configuration of XRRU/XRFU (The Dual-Mode Scenario) The configuration principle of XRRU/XRFU

XRRU/XRFU used in hybrid network of different working modes which are

share one CPRI port is used to identify RXU board works in another working

mode . For example

SRRU/WRFU works in UMTS Only mode should be configured as XRRU/XRFU in

GSM side.

DRRU/DRFU works in GSM Only mode should be configured as XRRU/XRFU in

UMTS side.


DRRU

MRRU

GMPT

SRRU

WBBP WMPT

Example

Physical connection

Support Configuration of XRRU/XRFU (The Dual-Mode Scenario)


DRRU

MRRU

GMPT

XRRU

WBBP WMPT

Configuration in GSM side

XRRU

MRRU

GMPT

SRRU

WBBP WMPT

Example

Configuration in UMTS side

Support Configuration of XRRU/XRFU (The Dual-Mode Scenario)


Function of sharing the Clock Source(Co-Cabinet Scenario/Dual-Mode Scenario)

The GSM&UMTS base station supports the clock source sharing

function. Currently, only the E1 clock source of the GSM system can

be shared with the UMTS system.

On the UMTS side, run the SET CLKMODE command, and then set

Clock Source Type to PEER.

Thank youwww.huawei.com

Introduction to New Functions of 3900 Series Dual-Mode Base Station -20090223-IsSUE1.0-B

Documents

Transcript of Introduction to New Functions of 3900 Series Dual-Mode Base Station -20090223-IsSUE1.0-B