zxsdr bs8900 gu360(v4.09.21) outdoor gsm umts dual mode macro node b system description

ZXSDR BS8900 GU360Outdoor GSM&UMTS Dual Mode Macro Node B

System Description

Version 4.09.21

ZTE CORPORATIONNO. 55, Hi-tech Road South, ShenZhen, P.R.ChinaPostcode: 518057Tel: (86) 755 26771900Fax: (86) 755 26770801URL: http://ensupport.zte.com.cnE-mail: [email protected]

LEGAL INFORMATION

Copyright © 2010 ZTE CORPORATION.

The contents of this document are protected by copyright laws and international treaties. Any reproduction or distribution ofthis document or any portion of this document, in any form by any means, without the prior written consent of ZTE CORPO-RATION is prohibited. Additionally, the contents of this document are protected by contractual confidentiality obligations.

All company, brand and product names are trade or service marks, or registered trade or service marks, of ZTE CORPORATIONor of their respective owners.

This document is provided “as is”, and all express, implied, or statutory warranties, representations or conditions are dis-claimed, including without limitation any implied warranty of merchantability, fitness for a particular purpose, title or non-in-fringement. ZTE CORPORATION and its licensors shall not be liable for damages resulting from the use of or reliance on theinformation contained herein.

ZTE CORPORATION or its licensors may have current or pending intellectual property rights or applications covering the subjectmatter of this document. Except as expressly provided in any written license between ZTE CORPORATION and its licensee,the user of this document shall not acquire any license to the subject matter herein.

ZTE CORPORATION reserves the right to upgrade or make technical change to this product without further notice.

Users may visit ZTE technical support website http://ensupport.zte.com.cn to inquire related information.

The ultimate right to interpret this product resides in ZTE CORPORATION.

Revision History

Revision No. Revision Date Revision Reason

R1.0 20100630 First edition

R1.1 20100930 Updated

Serial Number: SJ-20100628084131-002

Contents

About This Manual............................................. I

Overview...........................................................1System Position in Network.............................................. 1

System Features ............................................................ 1

Services and Functions.................................................... 3

System Structure ..............................................7Hardware Structure ........................................................ 7

System Composition ................................................... 7

Antenna Feeder Subsystem.......................................... 8

Operation and Maintenance Subsystem ......................... 8

Software Structure ......................................................... 8

Interfaces and Protocols .................................11Protocol Interfaces.........................................................11

Abis Interface ...........................................................12

Um Interface ............................................................14

Iub Interface.............................................................16

Uu Interface .............................................................18

Physical Interfaces.........................................................18

Working Principle............................................21Working Principle...........................................................21

Signal Flow...................................................................23

System Service Signal Flow ........................................23

System Control Signal Flow.........................................24

System Clock Signal Flow ...........................................25

Ventilation Principle .......................................................26

System Maintenance Mode ..............................27Maintenance Overview ...................................................27

Introduction to Maintenance Functions .............................28

Networking and Configuration.........................29Networking Description ..................................................29

Star Networking ........................................................29

Confidential and Proprietary Information of ZTE CORPORATION I

ZXSDR BS8900 GU360 System Description

Chain Networking ......................................................30

Ring Networking........................................................30

Configuration Description................................................31

Configuration Principle ...............................................31

Typical Configuration..................................................32

Reliability ........................................................35Hardware Reliability .......................................................35

Software Reliability ........................................................35

Indices ............................................................37System Capacity ...........................................................37

Working Frequency ........................................................37

RF Output Power ...........................................................38

Static Receiving Sensitivity .............................................38

EMC.............................................................................39

Dry Contact Capacity .....................................................39

Transmission Capacity ....................................................39

Grounding Resistance.....................................................40

Compliant Standards .......................................41Communication Standards ..............................................41

Other Standards............................................................42

Figures ............................................................45

Tables .............................................................47

Glossary ..........................................................49

II Confidential and Proprietary Information of ZTE CORPORATION

About This Manual

Purpose This manual describes the system structure and principle, ser-vice functions, technical indices, networking and configuration ofBS8900 outdoor UMTS macro BTS.

What Is in ThisManual

This manual contains nine chapters that are briefed below.

Chapter Description

Chapter 1, Overview Introduces BS8900 systembackground, features, functions,appearance, and system positionin network.

Chapter 2, System Structure Describes BS8900 hardwarestructure and software structure.

Chapter 3, Interface and Protocol Describes BS8900 interfaces andtheir protocols.

Chapter 4, Working Principles Describes the working principleof BS8900, including clockdistribution, signal flow andventilation principle.

Chapter 5, System Maintenance Describes the maintenancemethods and features of BS8900.

Chapter 6, Networking andConfiguration

Describes networking andconfiguration of BS8900.

Chapter 7, Reliability Describes the hardware & softwarereliability design of BS8900.

Chapter 8, Specification Describes BS8900 specifications,including physical indices,power indices, environmentrequirements, clock indices,reliability indices, interfaceindices, and capacity indices.

Chapter 9, Compliant Standards Describes the compliant standardsthat BS8900 follows.

IntendedAudience

� Base Station System Engineer

� Base Station Maintenance Engineer

Confidential and Proprietary Information of ZTE CORPORATION I


This page is intentionally blank.

II Confidential and Proprietary Information of ZTE CORPORATION

C h a p t e r 1

Overview

Table of ContentsSystem Position in Network.................................................. 1System Features ................................................................ 1Services and Functions........................................................ 3

System Position in NetworkThe GSM/EDGE/UMTS system consists of four parts: base station(BTS/Node B), radio network controller (BSC/RNC), core network(CN), and MS/UE, as shown in Figure 1.

FIGURE 1 BS8900 POSITION IN GSM/EDGE/UMTS SYSTEM

BS8900 provides the functions of a base station (BTS/Node B).It forms the Base Station Subsystem (BSS) with radio networkcontroller (BSC/RNC).

System FeaturesBS8900 has the following features:

� BTS functions

Confidential and Proprietary Information of ZTE CORPORATION 1


BS8900 is an outdoor dual-mode macro BTS, supporting GSMand UMTS.

� System architecture

BS8900 uses the architecture, in which BBU and RSU are sep-arated. RSU is located in local cabinet. BBU uses the full-IPhardware platform. IP switching is provided in BS8900.

� Evolution capability

BS8900, with uTCA platform and SDR technology, cansmoothly evolve to Enhanced EDGE. Hardware can evolve toLTE and share the hardware platform with LTE in future.

� Capacity and configuration

The system supports three RSU types: RSU82, RSU60, andRSU40 U216. The system supports up to 60 GSM TRXs and 30UMTS CSs.

Where, RSU82 is a RSU with 2-Tx and 4-Rx.

� Networking capability

BS8900 provides E1/T1 at Abis/Iub and optical/electric GE in-terface. It supports star networking and chain networking.

BS8900 can meet the requirements of GSM/UMTS hybrid net-working in different scenarios.

� Clock and synchronization

BS8900 supports multiple clock synchronization modes:

� GPS-based clock synchronization at radio interface.

� External BITS clock synchronization input.

� Upper clock synchronized with E1/T1 at Abis/Iub.

� GSM RF technology

With flexible RF unit configuration and advanced SDR tech-nologies, BS8900 provides multiple RF technology solutions tomeet capacity and coverage requirements.

� Downlink transmitting diversity

The downlink transmitting diversity means that one carriersignal is transmitted through two antennas in a sector toform the space transmit diversity. It enhances the anti-fad-ing capability of downlink signal and increases the coveragearea.

� Interference Rejection Combining (IRC)

The IRC technology increases the receiver's uplink sensi-tivity and expands the BTS's uplink coverage area. WhenIRC is used, it is recommended that the BTS is equippedwith at least two receiving antennas.

� Four Way Diversity Receiving (FWDR)

FWDR uses four antennas to receive uplink signals. BS8900can provide four diversity receptions for one carrier to getthe best gain. It enhances BTS's uplink receiving perfor-mance as well as reduces MS's transmitting power. Ul-tra-long distance coverage can be implemented by using

2 Confidential and Proprietary Information of ZTE CORPORATION

Chapter 1 Overview

both FWDR and DDT, both FWDR and DPCT, or both FWDRand downlink transmitting diversity.

� Installation and maintenance

� BS8900 product includes outdoor RU support cabinet, BBUsupport cabinet, and battery cabinet. The cabinets can bestacked or installed in parallel. They are easy to install. Youcan flexibly select the cabinet combination and installationmethods in practice.

� External cables are led in through the cabinet bottom.

� Green Design

BS8900 PA module uses the advanced green technologies,such as Doherty, DPD, and Multi-Carrier Power Amplifier(MCPA), which improve the PA efficiency.

� Outdoor environment adaptability

BS8900 outdoor cabinet has good sealing performance, to pro-tect the equipment from water, dust, burglary, rodent nui-sance, and electromagnetic interference. It complies with IP55protection standard and meets lightning protection grade B+C.It can be applied in various outdoor environments.

The BS8900 design ensures that the overall equipment can ef-fectively dissipate heat. Also, it uses the inner heating technol-ogy to guarantee normal operation at low temperature. Thesemeasures enhance the environment adaptability, reduce thepower consumption, and protect the environment.

Services and FunctionsThe following introduces the system services and functions.

Service Services supported are shown in Table 1.

TABLE 1 SERVICE LIST

Service type Details

FR: Full Rate voice service

EFR: Enhanced Full Rate voice service

HR: Half Rate voice service

AMR: Adaptive Multi-Rate voice service

F9.6: 9.6 Kbps full-rate data service

GSM/EDGEService

GPRS/EDGE: GPRS/EDGE packet data service

Positioningservice

Provides three positioning methods: CellID,CellIDRTT, and AGPS

R99 service CS domain: AMR voice service (support 8 rates), CS64 kbps service



Service type Details

PS domain: UL/DL 64 kbps, UL/DL 128 kbps, UL/DL384 kbps service

Concurrent service: CS domain (AMR 12.2 kbps, CS64 kbps) + PS domain (64 kbps, 128 kbps, 384 kbps)

HSDPA service Supports a maximum data rate of 14.4 Mbps.

Supports up to 15 code channels.

Supports HSDPA and R99 services on differentcarriers.

Supports co-frequency handover, hetero-frequencyhandvoer, and handover between HSDPA and R99.

Supports concurrent service.

Supports stream media service.

HSUPA service Supports a maximum data rate of 5.76 Mbps

MBMS service Supports broadcast and multicast functions andsupports PtP and PtM modes

Supports mobility management

Supports MBMS service of stream type andbackground type

HSPA+ service Supports downlink data rate of 43.2 Mbps

Supports uplink data rate of 11.5 Mbps

Function � Basic Functions

With Um/Uu interface, it accomplishes terminal access and RFlink transmission, including RF signal processing, channel cod-ing and decoding, channel multiplexing and de-multiplexing,measurement and reporting, power control, transmission di-versity, receiving diversity, calibration, and synchronization.

With Abis/Iub interface, it connects BSC and accomplishes thefollowing functions: cell management, reporting BTS measure-ment information, broadcasting system messages, access con-trol, mobility management, radio resource management, RFsignal processing, and transmission management.

With operating and maintenance interface, it performs sys-tem management, including configuration management, alarmmanagement, status checking and monitoring.

� Dual mode

The hardware supports GSM/EDGE and UMTS, and each modecan work independently. It supports mixed installation ofboards with different frequencies in the same cabinet andmixed installation of boards with the same frequency inthe same cabinet. Through relevant baseband board con-figuration, software version downloading, and backgroundconfiguration, GSM/UMTS network can be upgraded, changedover or run simultaneously.

BS8900 supports GSM Phase I/II/II+ and UMTS R99, R4, R5,R6, R7, and R8.


Chapter 1 Overview

� Frequency hopping

BS8900 supports GSM baseband frequency hopping and RF fre-quency hopping.

� Power control

BS8900 supports downlink carrier power control and imple-ments 6-level static power control and 15-level dynamic powercontrol in GSM/EDGE mode.

� Discontinuous Transmission (DTX)

BS8900 supports discontinuous transmission (DTX) mode.This reduces the transmitter power and general signal inter-ference level in the air.

� Modulation mode

Depending on the modulation commands issued by the basestation controller, BS8900 supports multiple modulationmodes, such as GMSK, 8-PSK, QPSK, and 16-QAM.

� Transmitting diversity and receiving diversity

In GSM mode, BS8900 supports downlink transmitting diver-sity, two-way/four-way diversity receptions. It also supportsthe four-antenna IRC technology.

� IRC switch control

BS8900 can enable and disable the interference-removal func-tion through software. After the function is disabled, the sys-tem can be restored to the state before the disabling operationis performed.

� IP Abis interface

IP function is supported at Abis interface.

� GPS network-wide synchronization

The GPS module is embedded in the baseband unit. The GPSclock is taken as the standard clock source for the entire basestation to realize the network-wide synchronization in GSM sys-tem.

� Carrier license control

BS8900 performs license control for multi-carrier-module car-rier, which can be commissioned according to a carrier.

� Electrical antenna

BS8900 supports electrical antenna and Tower Mounted Am-plifier (TMA).

� Viterbi code translation algorithm

The receiving end uses Viterbi code translation algorithm toincrease the system receiving sensitivity and channel decodingcapability.

� Co-BCCH technology

BS8900 supports Co-BCCH technology. Co-BCCH is mainlyused in dual-band cells. The dual-band cell refers to a cellsupporting two frequency bands and different bands using aBCCH.


C h a p t e r 2

System Structure

Table of ContentsHardware Structure ............................................................ 7Software Structure ............................................................. 8

Hardware StructureSystem Composition

Figure 2 shows the composition of base station system.

FIGURE 2 COMPOSITION OF BASE STATION SYSTEM



Base station system mainly comprises the following parts:

� BS8900 device

� Antenna feeder system

� Operation & maintenance system

Antenna Feeder Subsystem

The antenna feeder system is used to receive and transfer thesignals from or to the base station. The antenna feeder systemcomprises antenna, feeder line, jumper, tower-mounted amplifier,lightning protection and grounding devices.

Operation and MaintenanceSubsystem

The operation and maintenance subsystem comprises of two main-tenance modes: remote maintenance and local maintenance.

� Remote maintenance

Remote maintenance is done by Operation & Maintenance Cen-ter (OMC), to perform operation and maintenance functions forthe base station.

� Local maintenance

Local maintenance is done by Local Management Terminal(LMT), to perform operation and maintenance functions forthe base station.

Both local maintenance and remote maintenance are implementedthrough the base station software, which provides parameter con-figuration, alarm collection, base station status monitoring, perfor-mance data observation and reporting, interface message tracing,and base station software downloading.

Software StructureFigure 3 shows the general architecture of software system.


Chapter 2 System Structure

FIGURE 3 SOFTWARE SYSTEM STRUCTURE

Software system may comprise support software layer and servicesoftware layer.

1. The operation, application, and support platform provides thefollowing functions:

� OSS: provides the software running support platform in-dependent of hardware. It includes the following func-tions: secondary scheduling, timer, memory management,inter-board communication among different software sub-systems, system-level monitoring, monitoring alarm andlog, debugging and printing.

� SCS: controls power-on sequence, active/standbyswitchover, module management, subrack management,and rack management.

� OAM: provides network management functions, such asconfiguration, alarm, and performance measurement.

� DBS: performs data management.

� BRS: performs the protocol stack function.

� BRACS: performs the bearer access control function.

2. The GSM/UMTS service software system provides the followingfunctions:

� Service signaling processing

� Configuration management

� Status management

� Communication management

� Database management


C h a p t e r 3

Interfaces and Protocols

Table of ContentsProtocol Interfaces.............................................................11Physical Interfaces.............................................................18

Protocol InterfacesFigure 4 shows the system protocol interfaces.

FIGURE 4 SYSTEM PROTOCOL INTERFACE

TABLE 2 INTERFACE DESCRIPTION

Interface Position Function

BBU-RU interface BBU-RU Connect BBU and RU

Iub Interface Node B<=>RNC Communicate with RNC

Uu Interface UE<=>Node B Air interface



Abis Interface

Abis is the interface between BTS and BSC.

InterfaceFunctions

This interface supports all services provided to users and supportssignaling transmitting and connection function. It especially sup-ports radio resource management, including BTS radio equipmentcontrol and allocation.

InterfaceImplementation

Abis supports the following physical interfaces:

� GE (Gigabit Ethernet) interface

It can be GE fiber interface or GE RJ45 interface. In this case,BTS and BSC are connected through Ethernet cables. The net-work ports for BTS and BSC are GE interface with 1000M band-width. It has the adaptive rate, 10/100/1000 Mbps.

� E1/T1 Interface

With E1/T1 interface, BTS and BSC are connected through sin-gle E1 cable with 2.048M bandwidth or single T1 coaxial cablewith 1.544M bandwidth.

Protocol Hierarchy The following part describes user plane protocols and control planeprotocols respectively.

� Control plane protocols

i. Figure 5 shows the control plane protocol stack at Abis in-terface Under the Ethernet transmission mode.

FIGURE 5 PROTOCOL STACK AT CONTROL PLANE AT ABIS -ETHERNET

If Ethernet cable is used at Abis, the control plane messageis carried by SCTP protocol and encapsulated into IP packet.Standard Ethernet MAC frame is used at data link layer.

ii. Figure 6 shows the control plane protocol stack at Abis Un-der the E1 transmission mode.


Chapter 3 Interfaces and Protocols

FIGURE 6 PROTOCOL STACK AT CONTROL PLANE AT ABIS - E1

If E1 cable is used at Abis, the control plane message iscarried by SCTP protocol and encapsulated into IP packet.Point-to-Point Protocol (PPP) protocol is used at data linklayer and the IP packet is carried by Internet Protocol Con-trol Protocol (IPCP) of PPP family. To add the bandwidth,multiple E1 links can be combined to a Multilink-PPP group.HDLC frame is used at the bottom layer and the byte streamis converted into bit stream and transferred on physical me-dia.

� User Plane Protocols

i. Figure 7 shows the user plane protocol stack at Abis underEthernet transmission mode.

FIGURE 7 PROTOCOL STACK AT USER PLANE AT ABIS - ETHERNET

The user plane message is carried by RTP protocol and en-capsulated into standard IP packet. There is standard Eth-ernet MAC frame at data link layer.

ii. Figure 8 shows the user plane protocol stack at Abis underE1/T1 transmission mode.



FIGURE 8 PROTOCOL STACK AT USER PLANE AT ABIS - E1

The user plane message / RTP is carried by RTP protocol andencapsulated into standard IP packet. Point-to-Point Pro-tocol (PPP) protocol is used at data link layer and IP packetis carried by Internet Protocol Control Protocol (IPCP) ofPPP family. To add the bandwidth, multiple E1 links can becombined to a Multilink-PPP group. HDLC frame is used atthe bottom layer and the byte stream is converted into bitstream and transferred on physical media.

Um Interface

Um is the radio interface between BTS and MS.

InterfaceFunctions

MS connects the fixed parts in the network through radio channel,so the communication services can be done in subscriber accessnetwork. To interconnect MS and BTS, a series of definitions areset up for signal transmission over radio channel. The definitionsform the specification, that is, Um interface.

Protocol Hierarchy Um interface is designed with a hierarchical model. Figure 9 showsthe hierarchical structure of circuit service protocol.



FIGURE 9 HIERARCHY OF CIRCUIT SERVICE PROTOCOL AT UM

On Um interface, the protocol of circuit service comprises 3 layers:

1. Layer 1 (bottom) is the physical layer. It comprises variouschannels and provides the basic radio channels for upper-layermessage transmission.

2. Layer 2 (middle) is the data link layer and uses the LAPDmprotocol. It comprises various data transmission structuresand controls data transmission.

3. Layer 3 is the highest layer. It comprises various messagesand programs and performs service control. Layer 3 comprisesthree sub-layers: Radio Resource management (RR), MobilityManagement (MM), and Connection Management (CM).

Figure 10 shows the hierarchical structure of packet service pro-tocol. The packet service protocol is mainly implemented at BSCside.



FIGURE 10 STRUCTURE OF PACKET SERVICE PROTOCOL STACK AT UM

Relevant Protocols � GSM 04.03: describes the channel structure and access capa-bility at Um interface.

� GSM 04.04: specifies the structure at physical layer at Uminterface.

� GSM 04.05: specifies the protocol at data link layer at Uminterface.

� GSM 04.08: specifies the layer-3 protocols at Um interface.


Um interface is implemented through the antenna feeder systemof BTS, mainly including feeder cables and antennas.

Iub Interface

In 3GPP, Iub is the interface between Node B and RNC.

InterfaceFunctions

Lub interface performs the following functions:

� Transmission resource management

� Maintenance management

� O&M transmission

� System information management

� Public channel resource management

� Dedicated channel resource management

� Downlink shared channel resource management

� Timing and synchronization management


Iub interface supports the following physical ports:

� GE (Gigabit Ethernet) optical port



The medium is fiber and adaptive to 10M/100M/1000M rate.

� GE electric interface

The medium is Ethernet cable and adaptive to10M/100M/1000M rate.

� FE electric port

The medium is Ethernet cable and adaptive to 10M/100M rate.

� E1/T1 Interface

Maximum bandwidth is 2.048M for E1 and maximum band-width is 1.544M for T1.

Iub interface supports ATM transmission, full IP transmission andcombination of the both. ATM only supports E1/T1.

ATM ProtocolHierarchy

ATM transmission protocols at Iub interface include user plane andcontrol plane in radio network and control plane in transmissionnetwork. Figure 11 shows the protocol structure.

FIGURE 11 IUB PROTOCOL STACK - ATM

Full-IP ProtocolHierarchy

Figure 12 shows the full-IP transmission protocol at Iub. If E1/T1or Ethernet is used at the bottom layer link, the protocol stackdiffers.

FIGURE 12 IUB PROTOCOL STACK - FULL IP



Uu Interface

Un is an air interface. The information exchange at Uu interfaceis implemented by the antenna feeder system (mainly includingfeeder and antenna) of Node B.

BS8900 performs the following functions at Uu interface:

� Broadcasting, paging, and radio connection with UE.

� Handover decision and execution, power control decision andexecution.

� Radio resource management and control.

Physical InterfacesTable 3 describes the main internal and external interfaces in thesystem.

TABLE 3 DESCRIPTION OF MAIN PHYSICAL INTERFACES

Category Function PhysicalInterface

Location Description

E1/T1 SA/SE(Site AlarmExtender)

Both SA and SEsupport 8 E1/T1links.

Ethernetopticalport

CC/LPU

Iubinterface

Ethernetelectricport

CC/LPU

Each CC boardprovides anEthernet port.It can be opticalport or electricport.

UuInterface

Feeder RFinterface

RSU The informationinteraction at Umis done by theantenna feedersystem.

AISG DB9interface

RSU AISG controlsignal interface

RFinterface

CC 1, GPS orBITS-2MHz input

Clocksource

E1/T1interface(link 8)

SA/SE BITS-2MbpsInput

Local oper-ation andmainte-nance

Ethernetelectricport

CC provide a LMTinterface.

Externalinterface



Category Function PhysicalInterface

Location Description

Remote op-eration andmainte-nance

Ethernetinterface

CC/LPU Carried by Iubinterface

Powersupply

DC:-48V/-48VGND

AC: L1/L2/L3/N/PE

ADPD1 Support 3 phase,dual phase wires,1 phase access

Internalinterface

Baseband-radiointerface

Fiberinterface

FS Connect FS boardand RSU module.


C h a p t e r 4

Working Principle

Table of ContentsWorking Principle...............................................................21Signal Flow.......................................................................23Ventilation Principle ...........................................................26

Working PrincipleFrom the view of logical functional architecture of BS8900, thebase station system comprises two parts: Base Band Unit (BBU)and Radio System Unit (RSU), which communicate with each othervia IQ data and OAM signaling on fiber. Figure 13 shows the hard-ware system architecture of BS8900.

FIGURE 13 SYSTEM ARCHITECTURE

Baseband Layer BBU performs function at Abis/Iub, signaling processing, partialbaseband processing, remote and local operation and main-tenance, operation status monitoring, and alarm informationreporting. Table 4 describes the funtions of boards/modules inbaseband layer.



TABLE 4 MAIN FUNCTIONS AND COMPOSITION OF MODULES AT BASEBANDLAYER

Board Name Main Functions

CC Control and clockmodule

� Master control function� Provides system clock signal� Ethernet switching function

UBPG/BPC

GSM/UMTSbasebandprocessing board

� FP processing� Coding/decoding at physical layer� Modulation and demodulation� Spreading and despreading

protocol processing

FS Fabric switchingmodule

� IQ switching function� interface function between

baseband processing board and RU

SA Site alarm module � Supports alarm monitoring andspeed control of up to 9 fans.

� In charge of the signal monitoringand interface lightning in theproper shelf.

� Provides 6 input dry contactinterfaces and 2 I/O dry contactinterfaces.

� Provides 8 E1/T1 interfaces.

SE Supervisionextender

� In charge of the signal monitoringand interface lightning in theproper shelf.

� Provides extended full-duplexRS232 and RS485 communicationchannels for external monitoringdevices.

� Provides 6 input dry contactinterfaces and 2 I/O dry contactinterfaces.

� Provides 8 E1/T1 interfaces.

PM Power module BBU power input, voltage conversion,and power monitoring function.

FA Fan alarm module � Handles BBU heat dissipation� Provides fan monitoring, power

supply and status report function.

RF Layer RU mainly implements: conversion between air RF signal and dig-ital signal, amplification and transceiving of RF signal. Table 5describes the details.


Chapter 4 Working Principle

TABLE 5 MAIN FUNCTIONS AND COMPOSITION OF MODULES AT RF LAYER

Mod-ule

Name Main Functions Frequency

RSU60 Multi-carrier RU(80W)

GSM/UMTS

Supports up to 6frequencies in GSM.

Supports up to 4carriers in UMTS

GSM 850M/EGSM-/900M/1800M/1900MHz

UMTS 850M/900M/1800M/1900MHz

RSU82 2T4R multi-carrier RU(2*80W)

GSM/UMTS

Supports up to 8frequencies in GSM.

Supports up to 2*2carriers in UMTS900MHz or 2*3carriers in UMTS2100MHz

GSM900M/1800MHz

UMTS 900M/1800M/2100MHz

RSU40 Multi-carrier RU(60W)

Supports up to 4carriers in UMTS

UMTS 2100MHz

Fan subrack Fan subrack accommodates the following two different subsys-tems: BFAN in BC shelf and RFAN in RC shelf. Both use FCE5board but the control objects are different. In addition to smoke,flood, door access, and lightning protection module, BFAN in BCshelf also monitors door access of PC cabinet and thermoelectriccooler alarm. Meanwhile, it also controls the inner and outer cy-cling fan for heat exchanger. In addition to flood, door access,lightning protection, RFAN in RC shelf also controls outer cyclingfan for RSU.

Power distributionsubrack

ADPD1 does the AC & DC power distribution and switch control forwhole machine.

Signal FlowSystem Service Signal Flow

Figure 14 shows the service data flow.



FIGURE 14 SERVICE DATA FLOW

� Downlink: The service data from BSC/RNC enters BBU via CCor SA. IP protocol termination and NAT conversion at Abis/Iubare done on CC board. The data is then converted into internalIP datagram and transmitted to baseband board (uBPG/BPC)through Gigabit Ethernet (GE). The baseband board performsmodulation, multiplexing, and rate adaptation for the internalIP datagram and transmits it to the IQ switching unit of FS.Then, on the IQ switching unit of FS, de-multiplexing, inter-leaving, frame forming, and parallel- serial conversion are im-plemented. Finally, the internal IP datagram is distributed toRU via BBU-RU interface (optical port).

Note:

If Abis/Iub uses the E1/TI interface, you shall transfer and pro-tect the signal via SA board. If Abis/Iub uses GE interface, di-rectly connect it to CC.

� Uplink: The IQ switching unit of FS receives baseband signalsfrom RU, performs de-multiplexing, and then transmits them tobaseband board through high-speed serial signals. The base-band board then performs demodulation to get the original se-rial signals. These signals are packed into Ethernet frames,passed to the switching center via GE, and processed as trans-mission protocols at Abis/Iub on the CC board. Finally, theyare transmitted to BSC/RNC via E1/T1/GE.

System Control Signal Flow

The CC board implements the master control function. The controlsignal is distributed to all other boards from the CC board. Figure15 shows the control signal flow.


Chapter 4 Working Principle

FIGURE 15 CONTROL SIGNAL

System Clock Signal Flow

The system clock is distributed to all other boards from the CCboard and is distributed to RU via the optical port. Figure 16 showsthe clock distribution.

FIGURE 16 CLOCK DISTRIBUTION

In Figure 16, the clock reference of CC board comes from GPS net-work. The clock reference of CC board can be: GPS output clockreference, upper-level clock synchronized with Abis/Iub E1/T1, orBITS reference clock input from CC front panel. You can select dif-ferent clock reference sources based on the specific applications.



Ventilation PrincipleHeat dissipation inRC8911A cabinet

The cooling air in RC8911A cabinet comes from the back, blowsfrom RSU top to bottom, and goes out from the bottom.

Heat dissipation inBC8910A cabinet

The heat dissipation in BC8910A cabinet is implemented by heatexchanger doing the dissipation with ambient. The front and rearair ducts for power rectifier, BBU and transmission devices are theair ducts at left and right sides.

Heat dissipation inRC8910A cabinet

Heat dissipation in RC8910A cabinet is the same as that inRC8911A cabinet.

Heat dissipation inPC8910A cabinet

PC8910A cabinet dissipates the heat by natural mode or fan.


C h a p t e r 5

System MaintenanceMode

Table of ContentsMaintenance Overview .......................................................27Introduction to Maintenance Functions .................................28

Maintenance OverviewThe maintenance involves local maintenance and remote mainte-nance. Figure 17 shows the networking structure of maintenancesystem.

FIGURE 17 OPERATION AND MAINTENANCE NETWORKING

� Remote maintenance

In remote maintenance, NetNumen M31 is connected withOMM on RNC, and then connected with the base station atAbis/Iub to implement operation and maintenance.

� Local maintenance

In local maintenance, PC is directly connected with the basestation through Ethernet cable to implement operation andmaintenance.



Introduction to MaintenanceFunctionsThe user interface (UI) of remote maintenance system uses thetopology structure. On the user interface, user can view the in-formation of various NEs in whole network. The user can selectthe NE to be maintained and check its performance data, alarminformation, and configuration data. The user also can performmaintenance for some NEs on the topology. It mainly providesthe Telecom network management functions:

� Configuration management

User can add, query, delete, modify, and check data consis-tency for physical and radio resource data. It supports staticand dynamic data configuration.

� Security management

It ensures that only authorized user can perform the propercommand set actions.

� Performance management

It provides performance analysis, call tracing, and signalingtracing.

� Version management

The user can view hardware/software version running at fore-ground by NetNumen M31. User can download the software atbackground to upgrade the software at foreground.

� Fault management

It includes alarm management and diagnosis test. It can cen-trally monitor the operation state about the base station andcollect the information of exceptional boards and links in realtime. So, the operation and maintenance staff can easily doanalysis, maintenance, and correction.


C h a p t e r 6

Networking andConfiguration

Table of ContentsNetworking Description ......................................................29Configuration Description....................................................31

Networking DescriptionStar Networking

ApplicationScenario

Star networking is suitable for common application scenarios.Generally, it is used in urban areas with dense population.

Networking Mode In star networking, each site has n transmission links that directlyconnect BSC/RNC with BTS. The BTS equipment on each site isterminal equipment. Figure 18 shows the star networking mode.

FIGURE 18 STAR NETWORKING

Benefit andWeakness

The networking mode is simple, easy maintenance and engineer-ing, less loops passed by the signal, and the more reliable. How-



ever, the star networking requires more transmission cables thanother modes.

Chain Networking

ApplicationScenario

The chain networking is usually applied in strip-shaped areas withsparse population, such as areas along the highway and railway.

Networking Mode To avoid clock performance degradation, it is recommended not tocascade more than 4 BTSs in the chain networking mode. Figure19 shows the chain networking of BS8900.

FIGURE 19 CHAIN NETWORKING

Benefit andWeakness

With chain networking, a number of transmission devices can besaved. However, because signal passes through many intermedi-ate links, the link reliability is comparatively low.

Ring Networking

ApplicationScenario

Ring networking can be applied in common application scenarios.In normal case, because the ring networking has good self-healingcapability, it is usually recommended to use the ring networkingmode if route permits.

Networking Mode In case of some parts of the ring being broken, the ring changes totwo rings. Figure 20 shows the ring networking mode of BS8900.

FIGURE 20 RING NETWORKING

Benefit andWeakness

Ring networking is more reliable than chain networking. The for-mer has a stronger self-healing capability. If a link in the ring isbroken, the ring network can restore to chain network automati-cally. Also, the service is not affected.


Chapter 6 Networking and Configuration

Configuration DescriptionConfiguration Principle

This section describes the configuration of whole system, base-band layer and RF layer.

SystemConfiguration

Table 6 describes the configuration of subrack and function layer.

TABLE 6 SYSTEM CONFIGURATION

Cabinet Layer/Su-brack Qty Description

B900 powersubrack

1 Required in AC

ADPD1 1 Required in AC

DCPD2subrack

1 Required while DC power isconnected

BBU subrack 1 Mandatory

BFANsubrack

1 Mandatory

1U cabletrough

1 Mandatory

BC8910Aoutdoor BBU

LPU 1 Mandatory

PC8910Aoutdoorbattery cabinet

Batterymodule

1~8 Optional

DCPD1 1~2 Mandatory

RU 1~6 Mandatory

RC8910AoutdoorRU supportcabinet

Fan subrack 1 Mandatory

DCPD1 1 Mandatory

RU 1~3 Mandatory

Fan subrack 1 Mandatory

RC8911Aoutdoor RFcabinet

Batterymodule

1~4 Mandatory



Configuration ofBaseband Layer

Table 7 describes configuration of baseband layer.

TABLE 7 BASEBAND LAYER CONFIGURATION

Board Qty Description

CC 1, 2 � At least one board is required.� Set two boards if master/slave configuration

is required.

FS 1, 2 At least one board is required.

BPC 1~5

UBPG 1~5

� Set UBPG board in GSM and set BPC board inUMTS.

� You can set up to 5 UBPG+BPC boards.� A UBPG can handle 12 TRXs.� A BPC supports 3CS, and provides 128 CE for

both uplink and downlink.

SA 1 Mandatory

PM 2 Mandatory

FA 1 Mandatory

SE 1 Optional

RF LayerConfiguration

RF Layer Configuration is shown in Table 8.

TABLE 8 RF LAYER CONFIGURATION

Boa-rd

Qty Description

RSU60

1~6 � In GSM mode, a RSU60 supports up to 6frequencies.

� In UMTS mode, a RSU60 supports up to 4 carriers.� In dual mode, a RSU60 supports up to 4 GSM

frequencies and 1 UMTS carrier or 2 GSMfrequencies and 2 UMTS carriers.

RSU82

1~6 � In GSM mode, a RSU82 supports up to 8frequencies.

� In UMTS mode, a RSU82 supports up to 2*2carriers on 900MHz or 2*3 carriers on 2100MHz.

� In dual mode, a RSU82 supports up to 8 GSMfrequencies and 2 UMTS carrier.

RSU40 U216

1~6 In UMTS mode, a RSU40 U216 supports up to 4carriers.

Typical Configuration

Table 9 lists the typical configuration of BS8900.


Chapter 6 Networking and Configuration

TABLE 9 TYPICAL CONFIGURATION OF BS8900

Name Full Name Configuration Principle

B8200(BBU)

Baseband unit Mandatory

BC8910A Outdoor BBU Mandatory

PC8910A Outdoor bat-tery cabinet

Optional

RC8910A Outdoor RUsupport cabi-net

Optional. You can set 1-6 RSUs inside.

RC8911A Outdoor RUsupport cabi-net

Optional. You can set 1-3 RSUs insideand a set of 150AH batteries.

RSU40/RS-U60/RSU82

Radio systemunit (RSU)

Mandatory. Set one in a sector. You canset 1~6 groups optionally.

LPU Iub protectionunit

Optional. Set it If BBU and RNC areconnected via E1 (75/120 ohms), T1,or FE and the cable shall be routed intocabinet or outdoor (each LPU comprises8 E1 links + 2 FE links).

DDF75 75 ohms digi-tal distributionframe

Optional. Set it if BBU connects micro-wave device via 75 ohms E1 link (8 E1links).

DDF120 120 ohms dig-ital distributionframe

Optional. Set it if BBU connects micro-wave device via 120 ohms E1 link (16E1 links).

GPS ANT GPS antenna Optional. Set it if GPS clock is used.

GPS PRO-TECTOR

GPS lightningarrester

Optional. Set it if GPS clock is used.


C h a p t e r 7

Reliability

Table of ContentsHardware Reliability ...........................................................35Software Reliability ............................................................35

Hardware ReliabilityThe hardware reliability is achieved through the following aspects.

1. Hard Reset the Board

When the board cannot be reset by software, you can reset theboard by CC. CC can control BPC, FS and SA. Other boards arenot controlled.

2. Online board detection function

CC can learn if the board is proper by checking the communi-cation with different boards. For more reliable detection, CCcan also do the online detection for different boards throughbackplane or wiring at baseband layer.

3. Anti-reverse board function

When board is inserted reversely, the reversed board can notproperly contact the backplane and may damage the equip-ment.

4. It provides the functions of overvoltage, overcurrent, and re-verse power polarity prevention.

5. Backup policy

� CC (master control, clock, switching network) supports 1+1hot active/standby mode.

� BBU uses the conception of resource pool. Baseband boardsupports load sharing.

� The FS board supports load sharing.

Software ReliabilityThe following functions are provided to guarantee software relia-bility.



1. Reliability of software operation support

� Periodically collect statistics on CPU utilization and stacks.

� Monitor exceptions, such as CPU overload, task in infiniteloop, task suspension, and deadlock.

� Capture various CPU exceptions and perform the propertreatments.

� Provide the reset log and black box that records the real-time information on software fault, easy to locate the fault.

2. Reliability of database management

� Provide the exception report mechanism and tell user thedetailed error cause while you do the configuration in Net-Numen M31.

� Perform foreground-background data consistency check.That is to say, guarantee the consistency of configurationdata by synchronizing all tables, uploading data, and incre-mental data synchronization.

� Hot active/standby function. That is to say, keep the dataconsistency in active/standby machine by synchronizing allactive/standby tables and incremental active/standby datasynchronization.

� Provide data storage protection mechanism. That is, keepthe data from damaged or corrupted and pass the integrity& validity inspection by data file mapping, log file, andmemory reservation.

� Provide exceptional log function and operation trace func-tion, easy to locate the fault.

3. Reliability of link transmission

� Active/standby link switchover, to improve the link reliabil-ity.

� Use reliable transmission protocol at transmission layer andprevent from distributed attack of refusal.

� Use multiplexing on IP resource and route table at networklayer by VRF and use default IP gateway function whilesearching route is failed.

� Isolate the broadcast by Vlan at link layer, preventing fromthe mutual influence by broadcast storm.

� The protocol stack provides the function of protecting re-ceived packet, preventing from the broadcast storm ex-hausting.

� Use IPinIP protocol to carry the NetNumen channel andseparate the operation service from maintenance service.


C h a p t e r 8

Indices

Table of ContentsSystem Capacity ...............................................................37Working Frequency ............................................................37RF Output Power ...............................................................38Static Receiving Sensitivity .................................................38EMC.................................................................................39Dry Contact Capacity .........................................................39Transmission Capacity ........................................................39Grounding Resistance.........................................................40

System CapacityThe system capacity is as follows:

� Support up to 60 TRXs in GSM.

� Support up to 30 CSs in UMTS.

� Support 36 GSM TRXs and 12 UMTS CSs in dual mode.

Working FrequencyThe system supports GSM 850/900/1800/1900 MHz, EGSM andUMTS 850/900/1800/1900/2100 MHz. The frequency range is asfollows:

� 900 MHz

Frequency range in uplink (transmitted by MS and received byBS): 880~915 MHz.

Frequency range in downlink (transmitted by BS and receivedby MS): 925~960 MHz.

� EGSM frequency



� 850 MHz





� 1800 MHz



� 1900 MHz



� 2100 MHz



RF Output PowerTable 10 describes the RF output power.

TABLE 10 RF OUTPUT POWER

RU Type Output power

RSU60 (GSM) GMSK 80W / 8PSK 50W

RSU60 (UMTS) 80W

RSU60 (GSM/UMTS) 80W

RSU82 (GSM) GMSK 2*80W / 8PSK 2*50W

RSU82 (UMTS) 900M 2*80W/2100M 2*60W

RSU82 (GSM/UMTS) 2*80W

RSU40 U216 (UMTS) 60W

Static Receiving SensitivityStatic receiving sensitivity is as follows:

� GSM: -113 dBm/single-antenna receiving

� UMTS: -126.5 dBm/single-antenna receiving


Chapter 8 Indices

� UMTS: -129.2 dBm/dual-antenna receiving

� UMTS: -131.9 dBm/quad-antenna receiving

EMCThe equipment meets the Electromagnetic Compatibility (EMC) re-quirements based on the following standards:

� ETSI EN 301 489-01

� ETSI EN 301 489-23

� ETSI EN 301 489-26 (V2.2.1)

Note:

Where, ETSI EN 301 489-01 is the general EMC standard aboutradio equipment. This standard gives the related definitions aboutall radio equipment, all test items, test methods, and harassmenttest limits. EN 301 489-23 and EN 301 489-26 describe the defini-tions about UMTS base station and its auxiliary equipment, includ-ing test items, methods to set up test environment, and criteria ofanti-interference test.

Dry Contact CapacityThe SA board (mandatory) supports 6 input dry contacts and 2 I/Odry contacts.

The SE board (optional) supports 6 input dry contacts and 2 I/Odry contacts.

Transmission CapacityTable 11 describes the system transmission capacity.



TABLE 11 SYSTEM TRANSMISSION CAPACITY

TransmissionInterface

Quantity Rate

E1/T1 interface 8 links, which can beexpanded to 16 links.

2 Mbit/s

GE optical port 1 1000M

GE/FE electric port 1 10M/100M/1000M

1. Only support 1 GE/FE optical port or electric port

Grounding ResistanceThe grounding resistance of BS8900 shall be no more than 5 ohms.


C h a p t e r 9

Compliant Standards

Table of ContentsCommunication Standards ..................................................41Other Standards................................................................42

Communication StandardsTable 12 lists the compliant standards.

TABLE 12 COMMUNICATION STANDARDS

SN Name Version

3GPP TS 23.053 Tandem Free Operation (TFO); Service description;Stage 2

4.0.1

3GPP TS 43.055 Dual Transfer Mode (DTM); Stage 2 4.6.0

3GPP TS 25.901 Network Assisted Cell Change (NACC) from UTRAN toGERAN; Network side aspects

6.1.0

3GPP TS 43.064 General Packet Radio Service (GPRS); Overalldescription of the GPRS radio interface; Stage 2

4.5.0

3GPP TS 43.068 Voice Group Call Service (VGCS); Stage 2 4.6.0

3GPP TS 43.069 Voice Broadcast service (VBS); Stage 2 4.5.0

3GPP TS 25.141 Base Station (BS) conformance testing (FDD) 4.8.0

3GPP TS 25.142 Base Station (BS) conformance testing (TDD) 4.9.0

3GPP TS 45.902 Flexible Layer One (FLO) 6.8.0

3GPP TS 45.002 Multiplexing and multiple access on the radio path 4.8.0

ITU-T G.707/Y.1322 Network node interface for the synchronous digitalhierarchy (SDH)

-

ITU-T G0.703 Physical/electrical characteristics of hierarchical digitalinterfaces

-

ITU-T G0.704 Synchronous frame structures used at 1544, 6312,2048, 8448 and 44 736 kbit/s hierarchical levels

-



SN Name Version

ITU G.722.2 Wideband coding of speech at around 16 kbit/s usingAdaptive Multi-Rate Wideband (AMR-WB)

-

T1.102-1993 Digital Hierarchy - Electrical Interfaces -

T1.403-1999 Network and Customer Installation Interfaces - DS1 -Electrical Interface

-

ITU-T I.432.2 155 520 kbit/s and 622 080 kbit/s operation -

ITU-T I.432.3 B-ISDN user-network interface - Physical layerspecification: 1544 kbit/s and 2048 kbit/s operation

-

ITU-T G.957 Optical interfaces for equipments and systems relatingto the synchronous digital hierarchy

-

T1.105-1995 Synchronous Optical Network (SONET) - BasicDescription including Multiplex Structure, Rates andFormats

-

ANSI INCITS 352 Information Technology Fibre Channel PhysicalInterfaces (FC-PI)

-

AISG1: Issue 1.1 Control interface for antenna line devices -

RFC 791 Internet Protocol. -

RFC 2507 IP Header Compression -

RFC0768 UDP -

RFC0791 IP -

RFC0793 TCP -

Other StandardsTable 13 lists other standards.

TABLE 13 OTHER STANDARDS

SN Name

ETSI EN 301 489-01 V1.5.1 Electromagnetic compatibility and Radio spectrum Matters(ERM); ElectroMagnetic Compatibility (EMC) standard forradio equipment and services; Part 1: Common technicalrequirements

ETSI EN 301 489-23 V1.2.1 Electromagnetic compatibility and Radio spectrum Matters(ERM); ElectroMagnetic Compatibility (EMC) standard forradio equipment and services; Part 23: Specific conditionsfor IMT-2000 CDMA Direct Spread (UTRA) Base Station (BS)radio, repeater and ancillary equipment

ETSI EN 301 489-26 V2.2.1 Electromagnetic compatibility and Radio spectrum Matters(ERM); ElectroMagnetic Compatibility (EMC) standard forradio equipment and services; Part26: Specific conditions


Chapter 9 Compliant Standards

SN Namefor IMT-2000 CDMA Multi-carrier Base Stations and ancillaryequipment

ETSI EN 301 908-01 V1.1.1 Electromagnetic compatibility and Radio spectrum Matters(ERM); Base Stations (BS) and User Equipment (UE) forIMT-2000 Third Generation cellular networks; Part 1:Harmonized EN for IMT-2000, introduction and commonrequirements of article 3.2 of the R & TTE Directive

ETSI EN 301 908-04 V1.1.1 Electromagnetic compatibility and Radio spectrum Matters(ERM); Base Stations (BS) and User Equipment (UE)for IMT-2000 Third Generation cellular networks; Part4: Harmonized EN for IMT-2000, CDMA Multi-Carrier(cdma2000) (UE) covering the essential requirements ofarticle 3.2 of the R & TTE Directive

EN60950-1 Safety of information technology equipment

EN50385:(2002-08) Product standard to demonstrate the compliance of radiobase stations and fixed terminal stations for wirelesstelecommunication systems with the basic restrictions orthe reference levels related to human exposure to radiofrequency electromagnetic fields (110MHz-40GHz)-Generalpublic

EN 50385 Product standard to demonstrate the compliance of radiobase stations and fixed terminal stations for wirelesstelecommunication systems with the basic restrictions orthe reference levels related to human exposure to radiofrequency electromagnetic fields (110MHz-40GHz)-Generalpublic

IEC 60721 Classification of environmental parameters and theirseverities of electric and electronic products

ISO 3744 Acoustics - Determination of sound power levels of noisesources using sound pressure - Engineering method in anessentially free field over a reflecting plane

ETS 300 753 Equipment Engineering (EE) Acoustic Noise Emitted byTelecommunications Equipment


Figures

Figure 1 BS8900 Position in GSM/EDGE/UMTS System............. 1

Figure 2 Composition of Base Station System......................... 7

Figure 3 Software System Structure...................................... 9

Figure 4 System Protocol Interface ......................................11

Figure 5 Protocol Stack at Control Plane at Abis - Ethernet ......12

Figure 6 Protocol Stack at Control Plane at Abis - E1 ..............13

Figure 7 Protocol Stack at User Plane at Abis - Ethernet..........13

Figure 8 Protocol Stack at User Plane at Abis - E1 ..................14

Figure 9 Hierarchy of Circuit Service Protocol at Um ...............15

Figure 10 Structure of Packet Service Protocol Stack at Um.....16

Figure 11 Iub Protocol Stack - ATM ......................................17

Figure 12 Iub Protocol Stack - Full IP ...................................17

Figure 13 System Architecture ............................................21

Figure 14 Service Data Flow................................................24

Figure 15 Control Signal .....................................................25

Figure 16 Clock Distribution ................................................25

Figure 17 Operation and Maintenance Networking..................27

Figure 18 Star Networking ..................................................29

Figure 19 Chain Networking ................................................30

Figure 20 Ring Networking..................................................30


Tables

Table 1 Service List............................................................. 3

Table 2 Interface Description...............................................11

Table 3 Description of Main Physical Interfaces ......................18

Table 4 Main Functions and Composition of Modules at

Baseband Layer.................................................22

Table 5 Main Functions and Composition of Modules at RF

Layer ...............................................................23

Table 6 System Configuration ..............................................31

Table 7 Baseband Layer Configuration ..................................32

Table 8 RF Layer Configuration ............................................32

Table 9 Typical Configuration of BS8900................................33

Table 10 RF Output Power...................................................38

Table 11 System Transmission Capacity ................................40

Table 12 Communication Standards .....................................41

Table 13 Other Standards ...................................................42


Glossary

16-QAM- 16-Quadrature Amplitude Modulation

8-PSK- 8-Phase Shift Keying

BITS- Building Integrated Timing Supply

BSC- Base Station Controller

BTS- Base Transceiver Station

CC- Control and Clock Module

CDMA- Code Division Multiple Access

CN- Core Network

DPD- Digital Pre-Distortion

DTX- Discontinuous Transmission

EDGE- Enhanced Data rates for GSM Evolution

FS- Fabric Switch Module

GMSK- Gaussian filtered Minimum Shift Keying

GPS- Global Positioning System

GSM- Global System for Mobile Communication

IPCP- IP Control Protocol

IRC- Interference Rejection Combining

LPU- Line Lighting Protection Unit

LTE- Long Term Evolution

MAC- Medium Access Control

MCPA- Multi-Carrier Power Amplifier



MS- Mobile Station

Node B- Node B

PPP- Point to Point Protocol

QPSK- Quadrature Phase Shift Keying

RNC- Radio Network Controller

RTP- Real-time Transport Protocol

SA- Site Alarm Module

SCTP- Stream Control Transmission Protocol

SDR- Software Defined Radio

UE- User Equipment

UMTS- Universal Mobile Telecommunication System

WiMAX- Worldwide Interoperability for Microwave Access


zxsdr bs8900 gu360(v4.09.21) outdoor gsm umts dual mode macro node b system description

Documents

zte corporationno

zte corporationor

system structure

system maintenance mode

system features

system composition

system control signal

system clock signal