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ZTE Confidential Proprietary © 2011 ZTE CORPORATION. All rights reserved. I
ZXSDR BS8700 Product Description
Version Date Author Approved By Remarks
© 2011 ZTE Corporation. All rights reserved.
ZTE CONFIDENTIAL: This document contains proprietary information of ZTE and is not to bedisclosed or used without the prior written permission of ZTE.
Due to update and improvement of ZTE products and technologies, information in this document issubjected to change without notice.
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TABLE OF CONTENTS
1
Overview ......................................................................................................... 1
2
Product Highlights .......................................................................................... 3
3
Functionality ................................................................................................... 4
3.1
Basic Functions ................................................................................................ 4
3.2
Service Functions ............................................................................................. 5
4
System Architecture ....................................................................................... 7
4.1
Product Physical Structure................................................................................ 7
4.2
Hardware Architecture ...................................................................................... 7
4.2.1
Baseband Unit .................................................................................................. 9
4.2.2
Radio Unit ....................................................................................................... 15
4.3
Software Architecture ..................................................................................... 44
5
Technical Indices .......................................................................................... 45
5.1
Technical Indices ............................................................................................ 45
5.2
External Interface ........................................................................................... 48
6
Operation and Maintenance ......................................................................... 49
7
Configuration Principles .............................................................................. 52
7.1 Baseband Unit Configuration Principles .......................................................... 52 7.2
Radio Unit Configuration Principles ................................................................ 52
7.3
GSM Single Mode Configuration Principles .................................................... 52
7.3.1
R8860E Configuration .................................................................................... 52
7.3.2
R8882 Configuration ....................................................................................... 53
7.4
UMTS Single Mode Configuration Principles .................................................. 53
7.4.1
R8840/R8880A Configuration ......................................................................... 53
7.4.2
R8860E Configuration .................................................................................... 53
7.4.3
R8882 Configuration ....................................................................................... 53
7.5
GSM/UMTS Dual-Mode Configuration Principles ............................................ 54
7.5.1
GSM 850M/900M/1800M/1900M and UMTS 850M/900M/1800M/1900MDual-Mode Network in Same Spectrum ......................................................... 54
7.5.2
GSM 900M/1800M and UMTS 2100M Dual-Mode Network in Different
Spectrums ...................................................................................................... 54
8
Acronyms and Abbreviation ........................................................................ 55
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FIGURES
Figure 1-1 Conventional GSM/EDGE/UMTS Network System ............................................. 1
Figure 1-2 ZTE SDR BS Composed GSM/UMTS Network ................................................... 1
Figure 1-3 Networking Diagram (B8200, RNC/BSC and RRU) ............................................. 2
Figure 4-1 Example of ZXSDR BS8700 Physical Structure .................................................. 7
Figure 4-2 BS8700 Hardware Structure ............................................................................... 8
Figure 4-3 B8200 Baseband Unit of BS8800 ........................................................................ 9
Figure 4-4 CC Panel .......................................................................................................... 10
Figure 4-5 UBPG Panel...................................................................................................... 11
Figure 4-6 BPC Panel ........................................................................................................ 12
Figure 4-7 FS Panel ........................................................................................................... 12
Figure 4-8 SA Panel ........................................................................................................... 13
Figure 4-9 SE Panel ........................................................................................................... 14
Figure 6-1 NetNumen M31 Elements Management System ............................................... 49
TABLES
Table 4-1 Main Board List of Baseband Unit ........................................................................ 9
Table 4-2 CC Panel Interface List ...................................................................................... 10
Table 4-3 FS Panel Interface List ....................................................................................... 13
Table 4-4 SA Panel Interface List ....................................................................................... 13
Table 4-5 SE Panel Interface List ....................................................................................... 14
Table 3-1 ZXSDR R8840 Physical Indices ......................................................................... 20
Table 5-1 ZXSDR BS8700 Technical Indices ..................................................................... 45
Table 5-2 Description of BS8700 External Interface ........................................................... 48
Table 7-1 BS8700 Configuration for GSM Single Mode (R8860E, TOC 20W/TRX) ............ 52
Table 7-2 BS8700 Configuration for GSM Single Mode (R8882, TOC 20W/TRX) .............. 53
Table 7-3 BS8700 Configuration for UMTS Single Mode (R8840/R8880A) ........................ 53
Table 7-4 BS8700 Configuration for UMTS Single Mode (R8860E) ................................... 53
Table 7-5 BS8700 Configuration UMTS Single Mode (R8882) ........................................... 53
Table 7-7 BS8700 Configuration for G/U Dual-Mode (Same Spectrum, R8860E) .............. 54
Table 7-8 BS8700 Configuration for G/U Dual-Mode (Same Spectrum, R8882) ................. 54
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Table 7-9 BS8700 Configuration for G/U Dual-Mode (Different Spectrums) ....................... 54
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1 Overview
In general, GSM/EDGE/UMTS system consists of Core Network (CN), Radio Network
(GERAN/UTRAN) and Mobile Station/User Equipment (MS/UE). GERAN/UTRAN
includes 2 network elements, base station and BSC/RNC. The conventional 2G/3G BS
connects to BSC/RNC via Abis/Iub interface. Figure 1-1 shows a conventional
GSM/EDGE/UMTS network system.
Figure 1-1 Conventional GSM/EDGE/UMTS Network System
In Figure 1-1, GPRS/EDGE and UTRAN are two separated radio networks. When ZTE
2G/3G dual-mode base station is introduced, the 2G/3G radio networks will be converged
into one and this will decrease the network construction cost greatly. The GSM/UMTS
integrated network is shown in Figure 1-2.
Figure 1-2 ZTE SDR BS Composed GSM/UMTS Network
SDR BS
SDR BS
BSC/RNC
HLR
PSTN
IP Network
MGW MSCS
SGSN GGSN
Software DefinedRadio for both G/UGSM
SDR BS flexibly configured as aGSM and UMTS system withonly software configuration
BS BSC
2G BSS
Node
Node
RNC
RNC
HLR
PSTN
IP Network
MGW MSCS
SGSN GGSN
3G UTRAN
GSM
UMTS
UMTS
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The purpose of this document is to describe the new-generation distributed Software
Defined Radio (SDR) base station – ZXSDR BS8700 (hereafter BS8700), which consists
of the core BBU (B8200) and series RRUs. BS8700 is based on the ZTE unified
MicroTCA platform and adopts MCPA technology radio part, to be the new type of ZTE
mobile BS. This revolutionary BS platform supports all kinds of wireless access
technology, including GSM, UMTS, CDMA2000 WiMAX and LTE.
ZXSDR BS8700 can be divided into different types of distributed BS through connecting
with different RRUs, according to different networking modes and coverage scenarios.
B8200+R8860E/R8882: Dual-mode macro distributed base station, mainly used for
outdoor and indoor GSM/UMTS dual-mode coverage.
B8200+ R8840/R8880A: UMTS mode macro distributed base station, mainly used
for outdoor and indoor UMTS mode coverage.
B8200 provides Iub/Abis interfaces with several types of physical interfaces such as
E1/T1, STM-1, FE and GE to connect with RNC/BSC, and CPRI interfaces to connect
with RRUs. B8200 supports IP transmission and hybrid transmission. B8200 provides at
most 12 pairs of CPRI optical interfaces to RRUs.
B8200 and RRU can support star, chain and mixed networking. In star networking, 12
optical interfaces are available to connect to 12 RRUs. In chain networking, RRU is able
to cascade up to 4 levels at maximum.
The networking diagram including B8200, RNC/BSC and RRU is shown in Figure 1-3.
Figure 1-3 Networking Diagram (B8200, RNC/BSC and RRU)
In the following chapter, a general description will be given to GSM/UMTS dual-mode
Base Station – ZXSDR BS8700.
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2 Product Highlights
ZXSDR BS8700 (hereafter BS8700) is the multi-carrier, dual-mode distributed base
station of ZXSDR BS series. By adopting advanced MicroTCA platform and SDRtechnology, BS8700 supports GPRS/EDGE/E-EDGE and UMTS/HSPA/HSPA+
simultaneously. Its main advantage is the flexibility which brings the possibility to support
GSM and UMTS on a single base station.
Compared with traditional base station, ZXSDR BS8700 has following highlight features:
Series RRUs, suitable for multi indoor and outdoor coverage scenarios.
Series RRUs have high output power, including R8840, R8860E, R8880A,
R8882.
RRU - Compact Design, Light, Easy Installation
R8840 is only 19 liters in volume and 16.5 kg in weight under typical power
output. With 2T4R design, R8882 supports 2 sectors or 1 2*2 MIMO sectors. All
kinds of RRU can be mounted on the pole, the wall, the tower top, etc. No
dedicated equipment space is required, easy for site selection and fast network
deployment.
RRU – Installed Near Antenna, Saving Feeder Loss, Enhancing Coverage
Series RRU can be remotely installed near the antenna system to lower the
feeder loss. The coverage gain can reach more than 3 dB compared with
traditional macro base station.
BBU - Plug-in Design for Shelf, Zero Footprint, Convenient Deployment
B8200 adopts Plug-in design with 19-inch, 2U in height and 8.75 kg in weight. It
can be conveniently mounted on the wall, ground, or in the 19-inch rack, etc.
Shared Baseband Resources, Dynamic Traffic Adjustment
Suitable for traffic transferring dynamically or outburst areas, such as CBD,
uptown or beauty spots, avoiding resources waste.
Various Interfaces, Flexible Networking ATM/IP dual protocol stacks, providing with various interfaces such as
E1/T1/STM-1/GE, etc. It supports SDH networking, hybrid transmission and
all-IP networking.
G/U Dual-Mode Configuration, Smoothly Evolving to Future Network
Supports GSM/GPRS/EDGE/ E-EDGE/UMTS/HSPA/HSPA+.
Multi-Carrier and Multi-Frequency
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R8882 has the capability to support 2*4 GSM TRX or 2*2 UMTS carriers. If GSM
and UMTS are configured at the same spectrum, each radio unit supports
2*(4G+1U) or 2*(2G+2U).
3 Functionality
3.1 Basic Functions
BS8700 supports the following basic functions on Um/Uu, Abis/Iub and O&M interfaces.
On Um/Uu interface, BS8700 supports UE access and radio link transmission,
including RF processing, channel coding and decoding, channel multiplexing and
de-multiplexing, measuring and reporting, power control, transmit diversity, receivingdiversity, calibration and synchronization.
Via Abis/Iub interface, BS8700 connects with BSC/RNC and supports the following
functions: cell management, BS measurement information report, system
Information broadcast, access control implementation from BSC/RNC, mobility
management, radio resource management and control, FP process and ATM
transmission management.
On operating and maintenance interface, BS8700 provides system management
functions including configuration management, alarm management, status check
and system monitor.
Besides, BS8700 provides following functions:
Supports GSM Phase I/GSM Phase II/GSM Phase II plus standards.
Supports 3GPP R99, R4, R5, R6, R7, and R8.
Supports GSM/UMTS 900MHz, EGSM 900MHz, GSM/UMTS 850MHz GSM/UMTS
1800MHz, GSM/UMTS 1900MHz, and UMTS 2100MHz.
Supports socket-independent board’s installation to support different frequencies inthe same cabinet.
Supports CS1~CS4 of GPRS, MCS1~MCS9 of EDGE.
Supports reduced TTI, fast ACK/NACK reporting, MS receiving diversity, downlink
dual carriers and EGPRS2-A of E-EDGE.
Supports dynamically changing channel coding according to monitoring and
measurement results.
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Supports space diversity, frequency diversity, time diversity, polarization diversity
and maximum ratio combination diversity.
The receiving part adopts Viterbi algorithm for coding to improve channel decoding
capability and system receiving sensitivity.
Supports frequency hopping.
Supports DTX sending and decreasing transmitting power, lowering the total
interference in the air.
Supports common BCCH; different carriers can be used for different services and
share the same BCCH.
Supports BSS local switch; the voice data frame will switch in BSS and will not go to
core network.
Supports dynamic power sharing; output power of MCPA can be shared by multi
carriers in multi-carrier BTS.
Supports intelligent cell shutdown to shut down some cells of the base station in
case of the traffic is very low.
3.2 Service Functions
BS8700 supports the following services:
GSM/GPRS/EDGE/E-EDGE:
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 Kbit/s CS domain data service
GPRS/EDGE/E-EDGE
Location service:
Supports Cell ID, Cell ID+RTT and AGPS location services
R99 service:
CS domain service: 8 Kinds of AMR voice services, CS 64Kbps
PS domain service: UL/DL 64Kbps, UL/DL 128Kbps, UL/DL 384Kbps
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Concurrent service: CS domain (AMR 12.2Kbps, CS 64Kbps) + PS domain (64Kbps,128Kbps, 384Kbps)
HSDPA Service:
Supports 14.4Mbps data rate
Supports 15 codes
Supports HSDPA and R99 on both independent and shared carriers
Supports intra-frequency, inter-frequency handover and handover between HSDPAand R99
Supports concurrent services
Supports streaming services
HSUPA Service:
Supports 5.76Mbps uplink data rate
MBMS Service:
Supports broadcast and multicast functions, multicast supports PtP and PtM
Supports mobility management
Supports streaming, background MBMS services
HSPA+ Service:
21.6Mpbs downlink data with 64QAM
28.8Mpbs downlink data with 16QAM + 2*2 MIMO
43.2Mpbs downlink data with 64QAM + Dual-Cell combination
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4 System Architecture
4.1 Product Physical Structure
ZXSDR BS8700 consists of the BBU (B8200) and series of RRUs. The physical
structures of ZXSDR BS8700 in different combinations are shown in Figure 4-1.
Figure 4-1 Example of ZXSDR BS8700 Physical Structure
4.2 Hardware Architecture
BS8700 hardware architecture is shown in Figure 4-2.
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Figure 4-2 BS8700 Hardware Structure
The BBU of ZXSDR BS8700 can be configured in GSM/UMTS single mode and G/U
dual-mode. It supports up to 30 CSs in UMTS single mode, providing 192 CEs baseband
processing capability DL/UL simultaneously, up to 60 TRXs in GSM single mode.
There are 5 kinds of ZXSDR BS8700 RRUs. They are mainly used for outdoor macro
coverage and also used for indoor coverage signal source.
R8840 - 2 receiving paths and 1 transmitting path (1T2R). Each one can support 1
sector in UMTS on 2100MHz/AWS. Its output power achieves 60W (TOC). R8840
supports 4 carriers.
R8860E - 2 receiving paths and 1 transmitting path (1T2R). Each one can support 1
sector in GSM/UMTS on 850/900/1800/1900MHz. Its output power achieves 80W
(TOC). R8860E supports 6 GSM TRXs or 4 UMTS carriers or 4G1U/2G2U.
R8880A - 2 receiving paths and 2 transmitting paths. Each one can support 2*2
MIMO in HSPA+ mode on 2100MHz. Its output power achieves up to 2*60W (TOC).
R8880A can be configured as UMTS mode. R8880A supports 2*4 carriers.
R8882 - 4 receiving paths and 2 transmitting paths. Each one can support 2 sectors
in GSM/UMTS 900/1800MHz, or 1 sector with 2*2 MIMO in HSPA+/LTE mode. Its
output power achieves up to 2*60W (TOC) for dual-mode. R8882 can be configured
as GSM only, UMTS only, LTE only or mixed mode. R8882 can be configured to 1 to
2*4 TRXs in GSM mode, or 1 to 2*2 carriers in UMTS mode. In dual-mode, one
R8882 supports 2* (4G+1U) or 2* (2G+2U).
Baseband Unit
Radio Unit
SA/SE/NIS CC
BP(UBPG/BPC)
/BPC)FS
RRU
E1
GE/FE
Clock
Data
Control Signaling
CPRI
Antenna
RF Unit
STM-
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4.2.1 Baseband Unit
Baseband unit in BS8700 is responsible for processing the baseband signals.
Single UBPG board supports GSM/GPRS/EDGE/E-EDGE 12 TRXs
Single BPC supports 6 CSs, uplink 192 CEs and downlink 192 CEs
In typical configuration, the BS8700 baseband unit provides 4 baseband processing
board slots. 1 more BP board can be available if only one FS board is configured.
Figure 4-3 B8200 Baseband Unit of BS8800
B8200 adopts standard 19 inches, and 2U high rack structure. The dimension is: 88.4
mm*482.6 mm*197 mm (H*W*D) and weight: 8.75 kg (full configuration).
The Baseband unit consists of control & clock board, fabric switch board, baseband
processing board, site alarm board, site alarm extension board (optional), power module,
and fan module. B8200 can support up to 60TRX for GSM or 36CS for UMTS with 960CEThe hardware is ready to support HSPA+.
Table 4-1 Main Board List of Baseband Unit
Board Name Function DescriptionMin/Max
ConfigurationSlot No.
CC Control & Clock Board 1/2 6,7
FS Fabric Switch Board 1/2 4,5
UBPGUniversal Baseband Processing boardfor GSM
1/5 4,8-11
BPC Base band Processing type C for UMTS 1/5 4,8-11
SA Site Alarm Board 1/1 3
SE Site alarm Extension Board 0/1 11
PM Power Module 1/2 1,2
FAM FAN Module 1/1 12
4.2.1.1 Control & Clock Board (CC)
CC is control and clock board, used for control and management of baseband unit,
providing Ethernet and system clock. The CC panel is illustrated in Figure 4-4.
1
23
4
567
891011 12
PM
SA
CC
FSS UBPG/BPC
FAM
B8200 can support up to 60TRX for GSM or 30CS for UMTS with 960CE.
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Figure 4-4 CC Panel
Description of CC panel interfaces is shown in Table 4-2.
Table 4-2 CC Panel Interface List
Interface Name Description
ETH0Ethernet interface between BS8700 and BSC/RNC, adaptinginterface of 10M/100M/1000M.
ETH1Ethernet interface used for cascading, debugging or local
maintenance, adapting interface of 10M/100M/1000M.
TX/RXUsed for Ethernet interface connection between BS8700 andBSC/RNC. This interface is 100M/1000M Ethernet optical interface.
EXTExternal communication port, connected to external receiver,
Mainly 485,PP1S+/2M+ interfaces.
REF External connection GPS antenna, SMA(F) interface
Control & clock board functions are as follows:
Ethernet switching function, implementing data switching for service and control flow
within the system
Abis/Iub interface protocol processing
Monitoring, controlling and maintaining of the base station system, providing LMT
interface
Managing software versions of boards and programmable components, and
supporting local and remote software upgrade
Supervising the running status of each board within the system
Synchronizing with various external reference clocks, including the Abis/Iub interfacerecovery clock, the GPS clock and the clock provided by BITS; The CS can select
one according to the actual configuration.
Generating and delivering the clock signal demanded by each part
Providing GPS receiver interface and managing the GPS receiver
Providing a real-time clock for system operation and maintenance; the real-time
clock can be calibrated
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The board power interface (-48V, -48V ground, protection ground, digital ground)
has reverse connection protection function
Reading various hardware management marks in the system, including the rack
number, backplane type number, slot number, board function type, board version,
and board function configuration mark
Supporting primary/slave switchover
4.2.1.2 UBPG Board
UBPG is the GSM baseband processing board. It processes the physical layer protocol
and frame protocol specified by 3GPP. UBPG panel is illustrated in Figure 4-5.
Figure 4-5 UBPG Panel
UBPG main function as follows:
Achieving rate adaptation, channel coding, interleaving, encryption, generating
TDMA shock burst, GMSK/8PSK modulation, IQ baseband digital signals output.
Achieving uplink IQ data receiving, receiver diversity combiner, digital demodulation
(GMSK&8PSK, equilibrium), decryption, de-interleaving, demodulator, and rate
adaptation. GE Ethernet interface transmit it to CC board for processing.
Radio link synchronization, transmission frame processing
Measuring parameters required in power control and handover
Diversified transmission and receiving
Communicating with CS via Ethernet interface
Reading all the hardware management identifiers, including the backplane type
number, slot number, board function type, board version, board function
configuration identifier, and the CPU serial number.
4.2.1.3 BPC Board
BPC is the UMTS baseband processing board. It processes the physical layer protocol
and frame protocol specified by 3GPP. BPC panel is illustrated in Figure 4-6.
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Figure 4-6 BPC Panel
BPC has no external interface, its main function as follows:
Achieving downlink baseband signal processing, including downlink data coding,
multiplexing, rate adaptation, channel mapping, spread spectrum and
scrambling power regulation and channel compositing.
Achieving uplink baseband signal processing, including uplink data RAKE receiving,
demodulator, transmitting the data to lub interface for processing.
Downlink data coding/multiplexing, rate matching, channel mapping, spreading and
scrambling, power adjusting, and channel compositing.
Uplink signal RAKE receiving and channel decoding
Radio link synchronizing and frame processing
Measuring parameters required in power control and handover
Softer handover and carrier diversity.
Communicating with the CS via the Ethernet interface
Reading all the hardware management identifiers, including the backplane type
number, slot number, board function type, board version, board function
configuration identifier, and the CPU serial number
4.2.1.4 Fabric Switch Board (FS)
FS is fabric switch board which provides baseband optical interface between BBU and
RRU and process the IQ signal. FS panel is illustrated in Figure 4-7.
Figure 4-7 FS Panel
Description of FS panel interfaces
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Table 4-3 FS Panel Interface List
Interface Name Description
TX0 RX0~TX5 RX56 pairs of optical interfaces, connected to
RRU
The FS has the following functions:
Receiving the signal from the rear board in the downlink and retrieving the data and
timing.
Multiplexing the received data and retrieving I/Q signal
I/Q mapping in the downlink and multiplexing I/Q signal to the optical signals.
Receiving the I/Q in uplink and de-multiplexing/mapping into I/Q signal
Transmitting the multiplexed I/Q signal to BP
Exchanging CPU interface signaling through HDLC interface with RU module
MicroTCA protocol based module management function
4.2.1.5 Site Alarm Board (SA)
SA is a site alarm board, illustrated in Figure 4-8.
Figure 4-8 SA Panel
Description of SA panel interface is shown in Table 4-4.
Table 4-4 SA Panel Interface List
Interface Name Description
-
8 E1/T1 interfaces,
1 RS485,
1RS232 interface,
6+2 dry contacts ( 6 input interfaces, 2 input & output interfaces )
The SA has the following functions:
Providing E1/T1 transmission interfaces for Abis/Iub.
Providing site alarm monitoring interfaces.
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Providing FAM's alarm and rate control.
4.2.1.6 Site alarm Extension Board (SE)
SE is site alarm extension board, and SE panel is illustrated in Figure 4-9.
Figure 4-9 SE Panel
Description of SE panel interfaces is shown in Table 4-5.
Table 4-5 SE Panel Interface List
Interface Name Description
-
8 E1/T1 interfaces,
1 RS485,
1RS232 interface,
6+2 dry contacts ( 6 input interfaces, 2 input & output interfaces )
SE shares the bottom-right slot with UBPG/BPC and has the following functions:
Providing E1/T1 transmission interfaces for Abis/Iub.
Providing site alarm monitoring interfaces.
It is used to extend the port number if SA cannot fulfill the requirements.
4.2.1.7 Power Module (PM)
PM is power module, and PM panel is illustrated in following figure.
Figure 4-10 PM Panel
Description of PM panel interface is shown as follows.
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Table 4-6 PM Panel Interface List
Interface Name Description
MON Debugging interface, RS232 interface
-48V/-48VRTN -48V input
ON/OFF Power switch, turn on/off 12V power to/from BBU
The PM has the following functions:
16 internal interfaces for +12 V load power;
16 internal interfaces for +3.3 V management power;
EMMC management;
Measurement and protection of input over-voltage/under-voltage;
Output over-current protection and load power management.
4.2.1.8 Fan Array Module (FAM)
FAM is fan array module which panel is illustrated as follows.
Figure 4-11 FAM Panel
The FAM main functions are as follows:
System temperature monitoring and controlling;
Monitoring, controlling, and reporting fan state.
4.2.2 Radio Unit
Radio unit mainly processes the conversion between baseband signals and RF signals.
In the BS8700, there are 5 kinds of radio units, respectively are: R8840, R8860E,
R8880A, R8882. Details are shown as below.
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4.2.2.1 R8840
R8840 is a UMTS multi-carrier radio unit, working on 2100MHz/AWS. R8840 supports
maximum 4 carriers, the output power is 60W.
R8840 module consists of MCPA (multi-carrier power module) module, transceiver
module, duplex filter LNA and RPWAC/DC (Power for AC or DC). There are one TX/RX
port and one RX port for connecting antenna. R8840 employs compact cabinet design,
as shown below.
4.2.2.1.1 Physical structure
Figure 4-12 ZXSDR R8840 Physical Structure
All R8840 external interfaces are located at the bottom, as shown in the following figure.
Figure 4-13 ZXSDR R8840 External Interfaces
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The interfaces are described in the following table.
Table 4-7 ZXSDR R8840 External Interfaces Description
S.N. Label Interface Interface Type/Connector
1 LC1BBU and RRUInterface /RRUcascading interface
LC-mode optical interface (IEC 874)
2 LC2BBU and RRUInterface /RRUcascading interface
LC-mode optical interface (IEC 874)
3 AISG AISG interface8-core aerial socket (IEC60130-9-ED)
4 MonitorExternal deviceinterface
37-pin aerial socket
5 PWR Power supply interface
AC interface: ConnectorXCE18T3K1P1-02+FJJP1-7.5Cable section area: 3*1 mm
2
DC interface: ConnectorXCG18T4K1P1-01+XC18FJJP1-10.5Cable section area: 4*1.5 mm
2
6 RXInterface to receivediversity RF cable
50 Ω N-mode connector
7 RX/TXInterface totransmit/receive maindiversity RF cable
50 Ω N-mode connector
8 RXoutFrequency extension
interface
N-KY (MIL-C-39012 or IEC169-16)
9 RXinFrequency extensioninterface
N-KY (MIL-C-39012 or IEC169-16)
10 GND Equipment grounding Cable section area: 16 mm2
4.2.2.1.2 Hardware Structure
R8840 includes the following 4 main hardware modules:
- RRU Transceiver (RTR)
- Power Amplifier (PA)
- Duplex Filters Low-noise amplifier (DFL)
- Power supply (PWR)
The hardware structure of R8840 is shown in Figure :
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Figure 4-14 ZXSDR R8840 System Structure
RTR
PWR DFL
CPRI 1
CPRI 2
•PA Out
AC/DC in ANT1
PA
PA Out
LMT
AISG
ANT2
CPRI Links
MON
4.2.2.1.2.1 RRU Transceiver (RTR)
- Process 2 paths receiving and 1 path transmitting signal;
- Uplink & downlink transition for radio link signal;
- Downlink IQ signal multiplexing, uplink IQ signal demultiplexing;
- Signal amplification, filter, and digit/analog conversion;
- Optical and electric signal conversion;
- Extract clock reference signal from baseband unit, provide clock for different
modules;
- RTWP and TSSI measurement report;
- Standing wave ratio (SWR) measurement report;
- Hardware failure self-test and alarm;
- Environment detection;
- Provide 2 paths of baseband –RF interface and 4 paths of external alarm input, and
a R485 interface, a FE interface, a RS232 interface, and a AISG interface;
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- Provide reset function.
4.2.2.1.2.2 Power Amplifier (PA)
- Amplify downlink RF signal input by RTR, and output it to DFL;
- Provide digital pre-distortion feedback signal for RTR;
- Provide power amplification output control;
- Feedback forward power coupling signal to RTR, and RTR will do forward power
inspection;
- Feedback backward power coupling signal to RTR, and RTR will do backward
power (SWR) inspection;
- Provide PA internal temperature data to RTR and RTR will do temperature
inspection.
4.2.2.1.2.3 Duplex Filter Lower-noise amplifier (DFL)
- Combination and separation of receiving and transmitting signal;
- Filter function of receiving & transmitting signal;
- Low-noise amplification function;
- Provide DFL alarm inspection function.
4.2.2.1.2.4 Power Supply (PWR)
- Provide power supply function and support AC or DC input;
- Inspect input overvoltage or under-voltage, input power disconnection, output
overvoltage or under-voltage, output over-current alarm, and report it to RTR board.
4.2.2.1.3 Software Architecture
The software architecture of R8840 can be divided into two layers: SDR unified platformsoftware and application software. The architecture is shown in the following Figure :
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Figure 4-15 ZXSDR R8840 Software Architecture
The Operating Administration and Maintenance (OAM) sub-system is the application
layer. Its main functions contain software downloading, configuration, management,
system maintenance and measurement.
The Operation Support Sub-system (OSS) is the supporting layer in this entire framework,
which is a hardware independent platform for running software and provides basic
functions like scheduling, timer, memory management, communication, sequencing
control, monitoring, alarming and logging.
The Linux is the operating platform communicating to the hardware components.
The Board Support Package (BSP) provides the device driver & initiation and supports
basic functions like alarming and monitoring. It also provides the relating interfaces and
services to the operating system.
4.2.2.1.4 Technical Specifications
4.2.2.2.4.1 Physical Indices
ZXSDR R8840 employs the compact design, whose physical indices are listed below.
Table 4-6 ZXSDR R8840 Physical Indices
Item Index
Dimension (H*W*D) 370*320*160 mm
Weight 16.5 Kg
Color Silver gray
Hardware
BSP
OSS
Linux
OAM
SDR Unified
Platform SW
Application
SW
Hardware
System
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4.2.2.2.4.2 Operation Frequency Band
Table 4-8 ZXSDR R8840 Operation Frequency Band
Item Index
Operation frequency band 2100M/AWS
4.2.2.2.4.3 Capacity
Table 4-9 ZXSDR R8840 Capacity
Item Index
Capacity 4 carriers
4.2.2.2.4.4 Receiver Sensitivity
R8840 receiver sensitivity is shown as following table:
Table 4-10 ZXSDR R8840 Receiver Sensitivity
Item Index
Receiver sensitivity-126.5 dBm @ single antenna
-129.2 dBm @ dual antennas
4.2.2.2.4.5 TOC Output Power
Table 4-11 ZXSDR R8840 TOC Output Power
Mode TOC Output Power
UMTS 60W
R8840 uses one MCPA module with maximum 60W TOC Output Power. Output power
divides to license, one license has 20W, the first license is free. According to the quantity
of output power licenses to configure how much output power for each carrier. It’s very
flexible and customized to configure the total 60W sharing for one or two, three or four
carriers. Example with S1 configuration, maximum output power is 60W can be
configured. S3 configuration, output power could be 20W/carrier.
4.2.2.2.4.6 Power Supply
Table 4-12 ZXSDR R8840 Power SupplyItem Indices
power supplyDC: -48 V (-37 V – -60 V DC)
AC: 110 V/220 V (90 V – 290 V AC)
4.2.2.2.4.7 Power Consumption
Table 4-13 ZXSDR R8840 Power Consumption
Item UMTS, 20W/Carrier
Typical powerconsumption
100W (S1) 125W (S2) 160W (S3)
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Maximum powerconsumption
240W (S3)
4.2.2.2.4.8 Transmission
ZXSDR R8840 is connected to BBU through CPRI interfaces.
Table 4-14 ZXSDR R8840 CPRI Interfaces
Item Value Interface Kind Speed Standard
CPRI interface 2 SFP (LC) 1.25Gbps CPRI V2.0
4.2.2.2.4.9 Working Environment
Table 4-15 ZXSDR R8840 Environment Condition Compatibility
Item Index
Temperature -40 to +55 °C
Relative humidity 5% to 100%
Waterproof/dustproof IP65
Ground≤5 Ω; earth resistance can be less than 10 Ω inthunder-less area where there less than 20 thunderstormdays per year.
Storage
Indoor pack deposited
Temperature: -40 °C to 70 °C
Relative Humidity: 5% to 100%
4.2.2.2.4.10 Electromagnetic Compatibility
YD/T 1595.2-2007
ETSI EN 301 489-01, ETSI EN 301 489-23
ETSI EN 300 386 –V1.3.2
(CISPR22) Class B
Directive 1999/5/EC (R&TTE)
4.2.2.2 R8860E
R8860E is multi-carrier RF module, working on 850/EGSM/900/1800/1900MHz. R8860E
can be configured as GSM only, UMTS only or mixed mode module. R8860E can be
configured to 1 to 6 TRXs in GSM mode. In case of GMSK modulation, 80W TOC output
power can be provided. If R8860E is used as UMTS mode, it can support 4 carriers with
80W TOC output power. In mixed mode, R8860E can support 4 GSM TRXs and 1 UMTS
carriers or 2 GSM TRXs and 2 UMTS carriers.
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R8860E module consists of MCPA module, transceiver module, and duplex filter LNA.
There are one TX/RX port and one RX port for connecting antenna. R8860E employs
compact cabinet design, as shown below.
4.2.2.2.1 Physical Structure
Figure 4-16 ZXSDR R8860E Physical Structure
All R8860E external interfaces are located at the bottom, as shown in the following figure.
Figure 4-17 ZXSDR R8860E External Interfaces
The interfaces are described in the following table.
Table 4-16 ZXSDR R8860E External Interfaces Description
No Label Interface Interface type / connector
1 LC1BBU and RPU Interfaces/ RRU concatenationinterface
LC optical interface (IEC 874)
2 LC2BBU and RPU Interfaces/ RRU concatenationinterface
LC optical interface (IEC 874)
3 AISG AISG device interface 8-cores socket (IEC 60130-9-ED)
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4 Mon External device interface 37-core aviation socket
5 PWR Power supply interface
AC interface: ConnectorXCE18T3K1P1-02+FJJP1-7.5Cable section area: 3*1 mm
2
DC interface: ConnectorXCG18T4K1P1-01+XC18FJJP1-10.5Cable section area: 4*1.5 mm
2
6 RXInterface to receivediversity RF cable
50 ohms DIN-mode Connector
7 RX/TXInterface to transmit /receive main diversityRF cable
50 ohms DIN-mode Connector
8 RXoutFrequency expansioninterface
N-KY (MIL-C-39012 or IEC169-16)
9 RXin
Frequency expansion
interface N-KY (MIL-C-39012 or IEC169-16)
10 GND Machine Grounding Section area of cable is 16 mm2
4.2.2.2.2 Hardware Structure
R8860E includes the following 6 main hardware modules:
- Advanced Dual-mode Transceiver board (ADTR)
- Power Amplifier (PA)
- Duplex Filters Low-noise amplifier (DFL)
- RRU Interface Exchange board (RIE board)
- Protect Interface Board (PIB)
- Power supply (PWR)
The hardware structure of R8860E is shown in Figure 18:
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Figure 4-18 ZXSDR R8860E System Structure
RIE
ADTR
PWR DFL
CPRI 1
CPRI 2
•PA Out
AC/DC in ANT1
R8860E
PA
PA Out
LMT
AISG
ANT2
CPRI Links
MON
PIB
4.2.2.2.2.1 Advanced Dual-mode Transceiver (ADTR)
- Process 2 paths receiving and 1 path transmitting signal;
- Uplink & downlink transition for radio link signal;
- Downlink IQ signal multiplexing, uplink IQ signal demultiplexing;
- Signal amplification, filter, and digit/analog conversion;
- Optical and electric signal conversion;
- Extract clock reference signal from baseband unit, provide clock for different
modules;
- RTWP and TSSI measurement report;
- Standing wave ratio (SWR) measurement report;
- Hardware failure self-test and alarm;
- Environment detection;
- Provide 2 paths of baseband –RF interface and 4 paths of external alarm input, and
a serial port, a FE interface, a RS232 interface, and a AISG interface;
- Provide reset function.
4.2.2.2.2.2 Power Amplifier (PA)
- Amplify downlink RF signal input by ADTR, and output it to DFL;
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- Provide digital pre-distortion feedback signal for ADTR;
- Provide power amplification output control;
- Feedback forward power coupling signal to ADTR, and ADTR do forward power
inspection;
- Feedback backward power coupling signal to ADTR, and ADTR do backward power
(SWR) inspection;
- Provide PA internal temperature data to ADTR and ADTR will do temperature
inspection.
4.2.2.2.2.3 Duplex Filter Low-noise amplifier (DFL)
- Combination and separation of receiving and transmitting signal;
- Filter function of receiving & transmitting signal;
- Low-noise amplification function;
- Provide DFL alarm inspection function.
4.2.2.2.2.4 RRU Interface Exchange board (RIE)
- Access following these signals from PIB board: Ethernet signal, 485 dry contact,
LED indicator, single board reset signal, jumper, button signal, digital ground;
- Transmit the access signal by the socket and finish the function of interface
conversion.
4.2.2.2.2.5 Protect Interface Board (PIB)
- Access following these signals from DTR board: Ethernet signal, LED indicator,
single board reset signal, jumper, button signal, digital ground, power, ground and
485 signal of electrically tuned antenna;
- Power, ground, and 485 signal of electrically tuned antenna, output to electrically
tuned antenna by socket; other signals are introduced to outside by test socket, todo debug and use as indicative signal;
- Finish AISG interface power filtering and 485 lightening protection;
- Finish interference protection for indicators, reset signals, buttons, and jumpers.
4.2.2.2.2.6 Power Supply (PWR)
- Provide power supply function and support AC or DC input;
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- Inspect input overvoltage or under-voltage, input power disconnection, output
overvoltage or under-voltage, output over-current alarm, and report it to DTR board.
4.2.2.2.3 Software Architecture
The software architecture of R8860E can be divided into two layers: SDR unified platform
software and application software. The architecture is shown in the following Figure -19:
Figure 4-19 ZXSDR R8860E Software Architecture
The Operating Administration and Maintenance (OAM) sub-system is the application
layer. Its main functions contain software downloading, configuration, management,
system maintenance and measurement.
The Operation Support Sub-system (OSS) is the supporting layer in this entire framework,
which is a hardware independent platform for running software and provides basic
functions like scheduling, timer, memory management, communication, sequencing
control, monitoring, alarming and logging.
The Linux is the operating platform communicating to the hardware components.
The Board Support Package (BSP) provides the device driver & initiation and supports
basic functions like alarming and monitoring. It also provides the relating interfaces and
services to the operating system.
4.2.2.2.4 Technical Specifications
4.2.2.2.4.1 Physical Indices
ZXSDR R8860E employs the compact design, whose physical indices are listed below.
Hardware
BSP
OSS
Linux
OAM
SDR Unified
Platform SW
Application
SW
Hardware
System
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Table 4-17 ZXSDR R8860E Physical Indices
Item Index
Dimension (H*W*D) 370*320*197 mm
Weight 20 Kg
Color Silver gray
4.2.2.2.4.2 Operation Frequency Band
Table 4-18 ZXSDR R8860E Operation Frequency Band
Item Index
Operation frequency band850M/900M/1800M/1900M (DC input)
900M/1800M (AC input)
4.2.2.2.4.3 Capacity
Table 4-19 ZXSDR R8860E Capacity
Item Index
Capacity
4 TRXs + 1 carrier @ 850M/900M
2 TRXs + 2 carriers @ 850M/900M
4 carriers @ 850M/900M
6 TRXs @ 850M/900M/1800M/1900M
4.2.2.2.4.4 Receiver Sensitivity
R8860E receiver sensitivity is shown as following table:
Table 4-20 ZXSDR R8860E Receiver Sensitivity
Item Index
Receiver sensitivity
-113.5 dBm @ GSM single antenna
-126.4 dBm @ UMTS single antenna
-129.1 dBm @ UMTS dual antennas
4.2.2.2.4.5 TOC Output Power
Table 4-21 ZXSDR R8860E TOC Output Power
Mode TOC Output Power
GSM GMSK 80W/ 8PSK 50W
UMTS 80W
R8860E uses one MCPA module with maximum 80W TOC Output Power. Output power
divides to license, one license has 20W, the first license is free. According to the quantity
of output power licenses to configure how much output power for each carrier. It’s very
flexible and customized to configure the total 80W sharing for 1-6 TRXs in GSM mode,
1-4 Carriers in UMTS mode or share between GSM and UMTS in mixed GU mode.
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4.2.2.2.4.6 Power Supply
Table 4-22 ZXSDR R8860E Power Supply
Item Indices
power supplyDC: -48 V (-37 V – 57 V DC)
AC: 220 V (220 V – 240 V AC)
4.2.2.2.4.7 Power Consumption
Table 4-23 ZXSDR R8860E Power Consumption (DC input)
Item FrequencyGSM
13W/TRX
UMTS
20W/Carrier
GSM+UMTS
10W/TRX,20W/Carrier
Typical powerconsumption
850M/900M 195W (S6) 120W (S1)215W
(G_S4+U_S1)1800M/1900M 210 W (S6) N/A N/A
Maximum powerconsumption
850M/900M 315W
1800M/1900M 335W
Table 4-24 ZXSDR R8860E Power Consumption (AC input)
Item FrequencyGSM
13W/TRX
UMTS
20W/Carrier
GSM+UMTS
10W/TRX,20W/Carrier
Typical power
consumption
850M/900M 205W (S6) 125W (S1)225W
(G_S4+U_S1)
1800M/1900M 220 W (S6) N/A N/A
Maximum powerconsumption
850M/900M 330W
1800M/1900M 355W
4.2.2.2.4.8 Transmission
ZXSDR R8860E is connected to BBU through CPRI interfaces.
Table 4-25 ZXSDR R8860E CPRI Interfaces
Item Value Interface Kind Speed Standard
CPRI interface 2 SFP (LC) 1.25Gbps CPRI V2.0
4.2.2.2.4.9 Working Environment
Table 4-26 ZXSDR R8860E Environment Condition Compatibility
Item Index
Temperature -40 to +55 °C
Relative humidity 5% to 100%
Waterproof/dustproof IP65
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Ground≤5 Ω; earth resistance can be less than 10 Ω inthunder-less area where there less than 20 thunderstormdays per year.
Storage
Indoor pack deposited
Temperature: -40 °C to 70 °C
Relative Humidity: 5% to 100%
4.2.2.2.4.10 Electromagnetic Compatibility
YD/T 1595.2-2007
ETSI EN 301 489-01, ETSI EN 301 489-23
ETSI EN 300 386 –V1.3.2
(CISPR22) Class B
Directive 1999/5/EC (R&TTE)
4.2.2.3 R8880A
R8880A is a multi-carrier RF module; working on 2100MHz. R8880A can be configured
as UMTS mode. It processes 2 received signals and 2 transmitted signals. Each one can
support 2*2 MIMO in HSPA+ mode on 2100MHz. Its output power is up to 2*60W (TOC).
It is mainly used for outdoor macro coverage and also used for indoor coverage signal
source. R8880A supports 2*4 carriers.
R8880A employs compact cabinet design, as shown in the following in detail.
4.2.2.3.1 Physical Structure
Figure 4-20 ZXSDR R8880A Physical Structure
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All R8880A external interfaces are located at the bottom of the box, as shown in the
following figure.
Figure 4-21 ZXSDR R8880A External interfaces
1 2 3 4 5
6 7 8
The interfaces are described in the following table.
Table 4-27 ZXSDR R8880A External Interfaces Description
S.N. Label Interface Interface Type/Connector
1 OP1BBU and RRUInterface /RRUcascading interface
LC-mode optical interface (IEC 874)
2 OP2BBU and RRUInterface /RRUcascading interface
LC-mode optical interface (IEC 874)
3 AISG AISG interface8-pin circle connector (IEC60130-9-ED)
4 MONExternal deviceinterface
37-pin aviation connector
5 PWRPower supplyinterface
DC interface:
ConnectorXCG18T4K1P1-01+XC18FJJP1-10.5
Section area of cable is 4*1.5 mm2
6 ANT1(TX1/RX1)Interface totransmit/receivediversity RF cable
50 Ω DIN-mode connector
7 ANT2(TX2/RX2)Interface totransmit/receivediversity RF cable
50 Ω DIN-mode connector
8 GNDEquipmentgrounding
Cable section area: 16 mm2
4.2.2.3.2 Hardware Structure
R8880A includes the following 5 main hardware modules::
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- Transceiver for UMTS (TRU)
- Duplexer & LNA
- Power Amplifier for UMTS (PAU)
- Power supply (PWR)
- Protect Interface Board (PIB)
The hardware structure of R8880A is shown in Figure :
Figure 4-22 ZXSDR R8880A System Structure
PIB
TRU
PWR Duplexer&LNA
CPRI 1
CPRI 2
•PA Out
DC in ANT1
R8880A
PAU
PA Out
LMT
AISG
ANT2
CPRI Links
MON
4.2.2.3.2.1 Transceiver for UMTS (TRU)
The TRU has following functions:
- Process 2 received signals and 2 transmitted signals;
- Radio signal up/down conversion;
- Downlink IQ signal multiplexing and uplink signal de-multiplexing;
- Signal amplifying, filter, A/D conversion and D/A conversion;
- Conversion between optical and electric signal;
- Capture reference clock signal from baseband unit and provide clock signal to other
units;
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- Voltage Standing Wave Ratio (VSWR) measurement and report;
- Hardware failure self-detection and alarm;
- Provide communication interfaces, 2 CPRI interfaces, 3 dry contacts, one RS485
serial port for external monitor equipment communication, 1 AISG for electrical tilt
antenna, and 1 fast Ethernet port for LMT;
- Over-heat, over-power and over-standing wave protection;
- Reset function.
4.2.2.3.2.2 Duplexer & Lower Noise Amplifier (LNA)
The duplexer has following functions:
- Combine and isolate transmitted and received signals;
- Filter the transmitted signal and received signal;
- Low Noise Amplifier function.
4.2.2.3.2.3 Power Amplifier for UMTS (PAU)
PAU has the following functions:
- Perform radio signal amplifying function;
- Temperature report function.
4.2.2.3.2.4 Power supply (PWR)
PWR has the following functions:
- Power supply function;
- Monitor input under-voltage and output under-voltage alarm, and report it to TRU;
- Over-current protection.
4.2.2.3.2.5 Protect Interface Board (PIB)
The PIB has following function:
- Lightning protection for AISG and MON.
4.2.2.3.3 Software Architecture
The software architecture of R8880A can be divided into two layers: SDR unified Platform
software and application software. The architecture is shown in Figure :
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Figure 4-23 ZXSDR R8880A Software Architecture
The Operating Administration and Maintenance (OAM) sub-system is the application
layer. Its main functions contain software downloading, configuration, management,
system maintenance and measurement.
The Operation Support Sub-system (OSS) is the supporting layer in this entire framework,
which is a hardware independent platform for running software and provides basic
functions like scheduling, timer, memory management, communication, sequencing
control, monitoring, alarming and logging.
The Linux is the operating platform communicating to the hardware components.
The Board Support Package (BSP) provides the device driver & initiation and supports
basic functions like alarming and monitoring. It also provides the relating interfaces and
services to the operating system.
4.2.2.3.4 Technical Specifications
4.2.2.3.4.1 Physical Indices
ZXSDR R8880A employs compact design, whose physical indices are listed below.
Table 4-28 ZXSDR R8880A Physical Indices
Item Index
Dimension (H*W*D) 420*340*140 mm (≤ 20L)
Weight ≤19 Kg
Color Silver gray
Hardware
BSP
OSS
Linux
OAM
SDR Unified
Platform SW
Application
SW
Hardware
System
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4.2.2.3.4.2 Operation Frequency Band
Table 4-29 ZXSDR R8880A Operation Frequency Band
Item Index
Operation Frequency Band 2100MHz
4.2.2.3.4.3 Capacity
Table 4-30 ZXSDR R8880A Capacity
Item Index
Capacity 4 carriers @ 2*2 MIMO
4.2.2.3.4.4 Receiver Sensitivity
R8880A receiver sensitivity is shown as the following table:
Table 4-31 ZXSDR R8880A Receiver Sensitivity
Item Index
Receiver sensitivity-126.5 dBm @ UMTS single antenna
-129.2 dBm @ UMTS dual antennas
4.2.2.3.4.5 RRU TOC Output Power
Table 4-32 ZXSDR R8880A RRU TOC Output Power
Item Index
TOC output power 2*60W
R8880A uses two MCPA module with maximum 2*60W TOC Output Power. Output
power divides to license, one license has 20W, the first license is free. According to the
quantity of output power licenses to configure how much output power for each carrier.
It’s very flexible and customized to configure the total 2*60W sharing for 2*4 Carriers.
4.2.2.3.4.6 Power Supply
R8880A adopts a fully decentralized power supply, compatible with -48V DC (-57V to
-40V DC).
4.2.2.3.4.7 Power Consumption
Table 4-33 ZXSDR R8880A Power Consumption
Item Index
Typical power consumption 150W (S2@2*20W MIMO)
Maximum power consumption 215W (S2@2*20W MIMO)
4.2.2.3.4.8 Transmission
ZXSDR R8880A is connected to BBU through CPRI interfaces.
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Table 4-34 ZXSDR R8880A CPRI Interfaces
Item Value Interface Kind Speed Standard
CPRI interface 2 SFP (LC) 2.5Gbps CPRI V4.0
4.2.2.3.4.9 Working Environment
Table 4-35 ZXSDR R8880A Environment Condition Compatibility
Item Index
Temperature -40 to +55 °C
Relative Humidity 5% to 100%
Waterproof/Dustproof IP65
Ground≤5 Ω; earth resistance can be less than 10 Ω inthunder-less area where there are less than 20
thunderstorm days per year.
Storage
Indoor pack deposited
Temperature: -40 °C to 70 °C
Relative Humidity: 5% to 100%
4.2.2.3.4.10 Electromagnetic Compatibility
YD/T 1595.2-2007
ETSI EN 301 489-01, ETSI EN 301 489-23
ETSI EN 300 386 –V1.3.2
(CISPR22) Class B
Directive 1999/5/EC (R&TTE)
4.2.2.4 R8882
R8882 is the multi-carrier RF module, featuring 2-way transmitting and 4-way receiving. It
works on 900/1800MHz. R8882 can be configured as GSM only, UMTS only or mixed
mode module. R8882 can be configured to 2*4 TRXs in GSM mode. In case of GMSKmodulation, 2*60W TOC output power can be provided. If R8882 is used as UMTS mode,
it can support 2*2 carriers with 2*60W TOC output power. In mixed mode, R8882
supports 2* (4G+1U) or 2* (2G+2U).
R8882 module consists of MCPA module, transceiver module, and duplex filter LNA.
There are 2 TX/RX port and two RX port for connecting antenna. R8882 employs
compact cabinet design, as shown in following.
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4.2.2.4.1 Physical Structure
Figure 4-24 ZXSDR R8882 Physical Structure
Nearly all R8882 external interfaces are located at the bottom of R8882 except LMT at its
side, as shown in the following figure.
Figure 4-25 ZXSDR R8882 External Interfaces
1 2 3 4 5
6 7 98 10
R8882 Bottom
R8882 Side
The interfaces are described in the following table.
Table 4-36 ZXSDR R8882 External Interfaces Description
S.N. Label Interface Interface Type/Connector
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1 PWRPower supplyinterface
DC interface:
ConnectorGJ599/20-C06PN-H//J599/20M1C06aPHN
Section area of cable is4*1.5MM2+2*0.4MM2
2 MONExternal deviceinterface
8-pin circle connector
3 AISG AISG interface 8-pin circle connector (IEC 60130-9-ED)
4 OPT1
BBU and RRUInterface/RRUcascadinginterface
LC-mode optical interface (IEC 874)
5 OPT2
BBU and RRUInterface/RRUcascading
interface
LC-mode optical interface (IEC 874)
6 ANT1(TX0/RX0)
Interface totransmit/receivediversity RFcable
50 Ω DIN-mode connector
7 ANT2(RX2)
Interface toreceivediversity RFcable
50 Ω DIN-mode connector
8 ANT3(RX3)
Interface toreceivediversity RF
cable
50 Ω DIN-mode connector
9 ANT4(TX1/RX1)
Interface totransmit /receivediversity RFcable
50 Ω DIN-mode connector
10 LMTLocalmaintenanceterminal
Ethernet interface
4.2.2.4.2 Hardware Structure
R8882 includes the following 4 main hardware modules:
- Transceiver for Multi modes (TRM)
- FiLter of Dual duplexers (FLD)
- Power Amplifier of Dual channels (PAD)
- EMC Protection Board (EPB)
The hardware structure of R8882 is shown in Figure 26:
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Figure 4-26 ZXSDR R8882 System Structure
TRM PAD
ANT1
EPB
FLD
ANT2
ANT3
ANT4
CPRI 1
CPRI 2
LMT
MON
AISG
DC in
4.2.2.4.2.1 Transceiver for Multi modes (TRM)
The TRM has following functions:
- Process 4 received signals and 2 transmitted signals;
- Communicate with baseband unit and cascading RRU;
- Capture reference clock signal from baseband unit;
- Downlink/uplink IQ signal processing;
- Radio frequency hop function;
- Provide indication light;
- Hardware failure self-detection and alarm;
- Provide communication interfaces, 2 CPRI interfaces, 3 dry contacts, one RS485
serial port for external monitoring equipment, 1 AISG for electrical tilt antenna and 1
fast Ethernet port for LMT;
- Reset function.
4.2.2.4.2.2 Filter of Dual duplexers (FLD)
The FLD includes 2 duplexers and 2 receiving filters and has the following functions:
- Combine and isolate transmitted and received signals;
- Filter the transmitted signal and received signal.
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4.2.2.4.2.3 Power Amplifier of Dual channels (PAD)
The PAD includes 2 PAs and 4 LNAs and has following functions:
- Transmitted signal amplifying;
- Low Noise Amplifier (LNA) function;
- Pre-distortion information feedback;
- Voltage Standing Wave Ratio (VSWR) measurement and report;
- PA switch on/off;
- Temperature detection and alarm;
- Modules inventory management reading/writing.
4.2.2.4.2.4 EMC Protection Board (EPB)
The EPB has following functions:
- -48V DC Power supply function;
- Converter for MON, AISG and power supply interfaces;
- Lightning protection for the AISG, MON, and power supply.
4.2.2.4.3 Software Architecture
The software architecture of R8882 can be divided into two layers: SDR unified platform
software and application software. The architecture is shown in the following Figure :
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Figure 4-27 ZXSDR R8882 Software Architecture
The Operating Administration and Maintenance (OAM) sub-system is the application
layer. Its main functions contain software downloading, configuration, management,
system maintenance and measurement.
The Operation Support Sub-system (OSS) is the supporting layer in this entire framework,
which is a hardware independent platform for running software and provides basic
functions like scheduling, timer, memory management, communication, sequencing
control, monitoring, alarming and logging.
The Linux is the operating platform communicating to the hardware components.
The Board Support Package (BSP) provides the device driver & initiation and supports
basic functions like alarming and monitoring. It also provides the relating interfaces and
services to the operating system.
4.2.2.4.4 Technical Specifications
4.2.2.4.4.1 Physical Indices
ZXSDR R8882 employs the compact design, whose physical indices are listed below.
Table 4-37 ZXSDR R8882 Physical Indices
Item Index
Dimension (H*W*D) 480*320*150 mm (≤ 23L)
Weight ≤20 Kg
Color Silver gray
Hardware
BSP
OSS
Linux
OAM
SDR Unified
Platform SW
Application
SW
Hardware
System
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4.2.2.4.4.2 Operation Frequency Band
Table 4-38 ZXSDR R8882 Operation Frequency Band
Item Index
Operation frequency band 900MHz / 1800MHz
4.2.2.4.4.3 Capacity
Table 4-39 ZXSDR R8882 Capacity
Item Index
Capacity
G: 2*4 TRXs
U: 2*3 Carriers@900M
GU: 2*(4 TRXs + 1 Carrier) / 2*(2 TRXs + 2Carriers) @900M
Or 4 TRXs + 1 Carrier@900M + 4 TRXs@1800M
Or 2 TRXs + 2 Carrier@900M + 4 TRXs@1800M
4.2.2.4.4.4 Receiver Sensitivity
R8882 receiver sensitivity is shown as following table:
Table 4-40 ZXSDR R8882 Receiver Sensitivity
Item Index
Receiver sensitivity
-113.5 dBm @ GSM single antenna
-126.4 dBm @ UMTS single antenna
-129.1 dBm @ UMTS dual antennas
4.2.2.4.4.5 TOC Output Power
Table 4-41 ZXSDR R8882 TOC Output Power
Item Index
TOC output power 2*60W
R8882 uses two MCPA module with maximum 2*60W TOC Output Power. Output power
divides to license, one license has 20W, the first license is free. According to the quantity
of output power licenses to configure how much output power for each carrier. It’s very
flexible and customized to configure the total 2*60W sharing for 2*4 TRXs in GSM modeon 900M/1800M, 2*3 Carriers in UMTS mode on 900MHz or share between GSM and
UMTS in mixed GU mode on 900MHz mode.
4.2.2.4.4.6 Power Supply
R8882 adopts a fully decentralized power supply, compatible with -48V DC (-57V to
-40V DC).
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4.2.2.4.4.7 Power Consumption
Table 4-42 ZXSDR R8882 Power Consumption (2*60W)
Item
GSM
15W/TRX
UMTS
20W/Carrier
GSM+UMTS
10W/TRX, 20W/Carrier
Typical powerconsumption
310W (900M, S44)
320W (1800M, S44)
235W (S11)
290W (S22)
320W,(G_S44+U_S11)
Maximum powerconsumption
445W(900M)
455(1800M)
4.2.2.4.4.8 Transmission
ZXSDR R8882 is connected to BBU through CPRI interfaces.
Table 4-43 ZXSDR R8882 CPRI Interfaces
Item Value Interface Kind Speed Standard
CPRI interface 2 SFP (LC) 2.5Gbps CPRI V4.0
4.2.2.4.4.9 Working Environment
Table 4-44 ZXSDR R8882 Environment Condition Compatibility
Item Index
Temperature -40 to +55 °C
Relative humidity 5% to 100%
Waterproof/dustproof IP65
Ground ≤5 Ω; earth resistance can be less than 10 Ω inthunder-less area where there less than 20 thunderstormdays per year.
Storage
Indoor pack deposited
Temperature: -40 °C to 70 °C
Relative Humidity: 5% to 100%
4.2.2.4.4.10 Electromagnetic Compatibility
YD/T 1595.2-2007
ETSI EN 301 489-01, ETSI EN 301 489-23
ETSI EN 300 386 –V1.3.2
(CISPR22) Class B
Directive 1999/5/EC (R&TTE)
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4.3 Software Architecture
The software system of BS8700 consists of operating support layer and application layer.
Figure 4-20 BS8700 Software Structure
The operating support layer provides the functions of OAM, DBS, BRS, BRACS, and
SCS to serve different base station mode.
Operating and Maintenance (OAM) provides the configuration, alarm and
performance measurement function.
Data Base Sub-system (DBS) provides the database function.
Bearer Sub-system (BRS) provides protocol stack processing function.
Bearer Access Control Sub-system (BRACS) provides the function of access control
on bear layer.
System Control Sub-system (SCS) provides functions of power control/supply andactive/standby switching.
Operation Support Sub-system is the support layer in this framework, which is a
hardware independent platform for running software and providing basic functions like
scheduling, timer, memory management, communication, sequencing control, monitoring,
alarming and logging.
Board Support Package (BSP) supports the information routing to the GSM, UMTS, LTE
and common parts in the application layer.
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5 Technical Indices
5.1 Technical IndicesTable 5-1 ZXSDR BS8700 Technical Indices
Type Item Indices
PhysicalIndices
Size (H*W*D)(mm)
B8200 88.4*482.6*197
R8840 370*320*160
R8860E 370*197*320
R8880A 420*340*140
R8882 480*320*150
Weight
(kg)
B8200 8.75
R8840 16.5
R8860E 20
R8880A 19
R8882 20
Performance
Indices
WorkingFrequency
R8840 2100 MHz/AWS
R8860E 850/900/1800/1900 MHz
R8880A 2100 MHz
R8882 900/1800 MHz
Capacity
BBU
MaximumCarrier
30 CS (UMTS singlemode)
MaxCarrier/TRX
60 TRX (GSM singlemode)
Max ChannelElement forUMTS
UL: 960 CE
DL: 960 CE
Max ChannelsPer Cell forUMTS
123
MaxThroughput UL: 75 MbpsDL: 216 Mbps
RRU
R8840 (1T2R) U: 4 C
R8860E (1T2R)
G: 6 TRX
U: 4 C
GU: 4 TRX+ 1 C
R8880A (2T2R) U: 2*4 C
R8882 (2T4R)
G: 2*4 TRX
U: 2*2 C
GU: 2* (4 TRX + 1 C) /
2* (2 TRX + 2 C)
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OutputPower
RRU Type Output Power (TOC)
R8840 60W
R8860E 80W
R8880A 2*60W
R8882 2*60W
ReceivingSensitivity
-113.5 dBm @ GSM Single Antenna
-126.5 dBm @ UMTS single antenna
-129.2 dBm @ UMTS double antennas
Power
Indices
Powersupply,
voltagerange ofvariation
B8200 DC: -48 V (-40 V - -57 V DC)
R8840
DC: -48 V (-35 V - -60 V DC)
AC: 110 V/220 V (90 V – 290 V AC)
R8860E
DC: -48 V (-37 V - -57 V DC)
AC: 110 V/220 V (90 V – 290 V AC)
R8880A
DC: -48 V (-37 V - -60 V DC)
AC: 110 V (85 V – 135 V AC)
AC: 220 V (165 V – 300 V AC)
R8882 DC: -48 V (-37 V - -57 V DC)
PowerConsumption
Indices
UMTS singlemode
TypeTypical PowerConsumption (W)
B8200 6CS/1 BPC 80
B8200 12CS/2 BPC 115
B8200 18CS/3 BPC 145B8200 24CS/4 BPC 180
R8840 1C/TOC 20W 100
R8840 2C/TOC 40W 125
R8840 3C/TOC 60W 160
R8860E 1C/TOC 20W 155
R8860E 2C/TOC 40W 185
R8860E 3C/TOC 60W 210
R8860E 4C/TOC 80W 230
R8880A S1 1PA/TOC 20W 100
R8880A S2 1PA/TOC 40W 135
R8880A S3 1PA/TOC 60W 165
R8882 (900M) S1 1PA/TOC20W
160
R8882 (900M) S11 2PA/TOC40W
265
R8882 (900M) S2 1PA/TOC40W
190
R8882 (900M) S22 2PA/TOC80W
325
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GSM Single
Mode
R8860E (900M) S4/TOC 80W 200
R8882 (900MHz) S1 1PA/TOC20W
180
R8882 (900MHz) S3 1PA/TOC60W
195
R8882 (900MHz) S6 1PA/TOC2*60W
300
G/UDual-Mode
R8860E 4G1U/
TOC 4*15W (GSM)+20W(UMTS)
215
R8882 (900M) 4G1U 1PA/
TOC 4*10W (GSM)+20W(UMTS)
200
Environment
Indices
Temperature
BBU: -20°C - +55°C
RRU:R8840/R8860E/R8880A/R8882: -40°C - +55°C
RelativeHumidity
BBU: 5% - 95%
RRU: 5% - 100%
Waterproof
/Dustproof
BBU: IP20
RRU: IP65
Ground ≤5Ω
EMC Indices
National/
International
Standard
YD/T 1595.2-2007
ETSI EN 301 489-01, ETSI EN 301 489-23
ETSI EN 300 386 –V1.3.2
(CISPR22) Class BDirective 1999/5/EC (R&TTE)
Reliability
Indices
MTBF
BBU: ≥233,000 hours
R8840: ≥420,000 hours
R8860E: ≥380,000 hours
R8880A: ≥354,000 hours
R8882: ≥322,000 hours
MTTRBBU: 0.5 hours
RRU: 1 hours
Availability
BBU: ≥99.999785%
R8840: ≥99.999762%
R8860E: ≥99.999868%
R8880A: ≥99.999718%
R8882: ≥99.999689%
DownDuration
BBU: ≤1.128 min/year
R8840: ≤1.251 min/year
R8860E: ≤1.383 min/year
R8880A: ≤1.485 min/year
R8882: ≤1.632 min/year
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5.2 External Interface
ZXSDR BS8700 has abundant external interfaces which are described below.
Table 5-2 Description of BS8700 External Interface
Interface Item IndexInterface
TypeStandard
Abis/Iub
STM-1 2 (optional) SFP (LC)ITU G.957
ITU G.707
E1/T116 (8 pairs ofoptional)
DB44 ITU G.703/G.704
Ethernet
1(10M/100M/1000Melectrical)
Auto-Negotiation Auto-MDI/MDIX
RJ4510/100/1000BASE-TIEEE 802.3 compatible
1 (1000M optical) or
1 (100M optical)SFP (LC)
1000BASE-LX IEEE802.3 compatible
100BASE-FX IEEE802.3 compatible
Clock GPS 1 SMAGPS Antenna Interface
NMEA 0183 V3.0
BasebandMonitor &
Alarm
DryContacts
6 (Input),
2 (Input / Output)DB44 -
RS485 1 DB44 -
RF Monitor& Alarm
DryContacts
4 per RRU DB15 -
RS485 1 per RRU DB15 -
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6 Operation and Maintenance
The operation and management of BS8700 are performed by the ZTE unified network
management system, NetNumen M31, which adopts client/server architecture. The
server runs Solaris OS + Oracle database. The client adopts Windows system, enabling
human-machine management for the network element.
Figure 6-1 NetNumen M31 Elements Management System
The BSS/UTRAN/E-UTRAN provides a transparent channel to implement operation and
maintenance information interaction between NetNumen M31 and the radio network.
Management of the BSC/RNC and the BTS/Node B/eNode B adopts unified client
interface for security management and operation log. NetNumen M31 also supports
CORBA/SNMP Itf-N interface towards third-party NMS.
BS8700 operation and maintenance system support the following functions:
Version Management
With this function, administrator can view versions of the all software and hardware
running at the foreground. The hardware version includes the BOOT version number and
its generation time. The software version includes the software version number,
download time and its current running state.
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The background provides a software downloading system for software
download/upgrade at the foreground. Before download/upgrade, warehousing
processing is required. The warehousing process will copy the version files to the server
and register to the server.
Software versions existing in the base stations can be activated with or without software
tests.
Alarm Management
The alarm management system monitors running states of the base stations, dynamically
displays the rack structure of the foreground module and collects abnormal information of
the boards, links, database and server in real time. These functions make it convenient to
analyze, address the problems, maintain and repair.
Information collected by the alarm management system includes notification, alarm and
alarm recovery.
The alarm management system synchronizes alarms, reports historical alarms and
current alarms, and sets and queries alarm shielding.
Configuration Management
Configuration management implements functions of equipment configuration and radio
configuration.
Log Management
NetNumen M31 system provides the log management function. Any operation performed
by operator will be recorded automatically. Thus, the operation maintenance
administrator can query historical operation records. Log records are saved in the NM
database server.
Security Management
Security management is implemented through user management and user group
management. The user management includes the management for user name, password
and user groups which the user belongs to. The user group management includes themanagement of user group name and authority information (indicating authorities the
user group has).
Performance Management
Performance management is to measure, report and provide performances statistic of
base stations.
Diagnosis and Test
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Diagnosis and test are important components of EMS. The network administrator can
check whether system hardware is working properly by diagnosis and test. They are also
able to trace and fix the faults on time to secure the safe operation of the system.
Base station diagnosis and test cover the following functions:
Information reporting
Board link testing
Receiving field strength testing
Environment information monitoring
Other Supplementary Functions
The operation and maintenance system also provides other supplementary functions to
facilitate base station maintenance, which include but not limited signaling tracing,
channel viewing, abnormal record reporting and viewing.
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7 Configuration Principles
7.1 Baseband Unit Configuration Principles
Different baseband processing boards can be configured in BS8700 baseband unit for
different scenarios. UBPG board supports GSM/GPRS/EDGE/E-EDGE. BPC board
supports UMTS/HSPA/HSPA+. The processing capability of baseband processing
boards is listed as below:
Single UBPG board supports GSM/GPRS/EDGE/E-EDGE 12 TRXs
Single BPC supports 6 CSs, uplink 192 CEs and downlink 192 CEs
In typical configuration, the BS8700 baseband unit provides 4 baseband processing
board slots. 1 more BP board can be available if only one FS board is configured.
7.2 Radio Unit Configuration Principles
On different frequencies and software configurations, BS8700 can be configured as
various GSM/UMTS base stations:
In GSM single mode, R8860E supports 6 TRXs. One R8882 supports totally 2*4
TRXs.
In UMTS single mode, R8840 and R8860E supports 4 carriers, R8880A supports
2*4 carriers, R8882 supports 2*2 carriers.
If GSM/UMTS are in the dual mode, single R8860E can support 1 UMTS Carriers +
4 GSM TRXs or 2 UMTS carriers + 2 GSM TRXs at maximum; single R8882 can
support 2* (4G+1U) or 2* (2G+2U).
7.3 GSM Single Mode Configuration PrinciplesR8860E or R8882 is configured for GSM single mode, which is based on multi-carrier
technology.
7.3.1 R8860E Configuration
Table 7-1 BS8700 Configuration for GSM Single Mode (R8860E, TOC 20W/TRX)
Site Type R8860E Qty B8200 Qty UBPG Qty
S4/4/4 3 1 1
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S6/6/6 3 1 2
S12/12/12 6 1 3
7.3.2 R8882 Configuration
Table 7-2 BS8700 Configuration for GSM Single Mode (R8882, TOC 20W/TRX)
Site Type R8882 Qty B8200 Qty UBPG Qty
S4/4/4 2 1 1
S8/8/8 3 1 2
7.4 UMTS Single Mode Configuration Principles
R8840, R8860E, R8880A, R8882 is configured for UMTS single mode.
7.4.1 R8840/R8880A Configuration
Table 7-3 BS8700 Configuration for UMTS Single Mode (R8840/R8880A)
Site Type R8840/R8880A Qty B8200 QtyBPCQty
S1/1/1 3 1 1
S2/2/