110117_B4.1.1.2 ZXSDR BS8700 Product Description_ZTE

ZXSDR BS8700 Product Description



Version Date Author Approved By Remarks

V4.00 2009-7-12 Zhang Jing Not open to the third party

V4.10 2009-12-07 Shen Junjie Not open to the third party

V4.20 2010-02-05 Shi Hongsheng Not open to the third party

V1.00 2010-11-5 Yang Lisha Not open to the third party

ZTE Confidential Proprietary © ZTE CORPORATION. All rights reserved.

© 2023 ZTE Corporation. All rights reserved.

ZTE CONFIDENTIAL: This document contains proprietary information of ZTE and is not to be disclosed or used without the prior written permission of ZTE.

Due to update and improvement of ZTE products and technologies, information in this document is subjected to change without notice.


TABLE OF CONTENTS

1 Overview.............................................................................................................1

2 Product Highlights............................................................................................3

3 Functionality......................................................................................................43.1 Basic Functions...................................................................................................43.2 Service Functions................................................................................................5

4 System Architecture..........................................................................................84.1 Product Physical Structure..................................................................................84.2 Hardware Architecture.........................................................................................84.2.1 Baseband Unit...................................................................................................104.2.2 Radio Unit..........................................................................................................174.3 Software Architecture........................................................................................29

5 Technical Indices.............................................................................................305.1 Technical Indices...............................................................................................305.2 External Interface..............................................................................................33

6 Operation and Maintenance...........................................................................34

7 Configuration Principles.................................................................................377.1 Baseband Unit Configuration Principles............................................................377.2 Radio Unit Configuration Principles...................................................................377.3 GSM Single Mode Configuration Principles......................................................377.3.1 R8860E Configuration.......................................................................................387.3.2 R8882 Configuration.........................................................................................387.4 UMTS Single Mode Configuration Principles....................................................387.4.1 R8840/R8880A Configuration...........................................................................387.4.2 R8860E Configuration.......................................................................................387.4.3 R8882 Configuration.........................................................................................397.4.4 R8890 Configuration.........................................................................................397.5 GSM/UMTS Dual-Mode Configuration Principles.............................................397.5.1 GSM 850M/900M/1800M/1900M and UMTS 850M/900M/1800M/1900M Dual-

Mode Network in Same Spectrum....................................................................397.5.2 GSM 900M/1800M and UMTS 2100M Dual-Mode Network in Different

Spectrums.........................................................................................................40

8 Acronyms and Abbreviation..........................................................................41

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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......................................................2

Figure 1-3 Networking Diagram (B8200, RNC/BSC and RRU)................................................3

Figure 4-1 Example of ZXSDR BS8700 Physical Structure.....................................................8

Figure 4-2 BS8700 Hardware Structure...................................................................................9

Figure 4-3 Baseband Unit of BS8700.....................................................................................10

Figure 4-4 CC Panel...............................................................................................................10

Figure 4-5 UBPG Panel..........................................................................................................12

Figure 4-6 BPC Panel.............................................................................................................12

Figure 4-7 FS Panel...............................................................................................................13

Figure 4-8 SA Panel...............................................................................................................14

Figure 4-9 SE Panel...............................................................................................................15

Figure 4-10 NIS Panel............................................................................................................15

Figure 4-11 PM Panel.............................................................................................................16

Figure 4-12 FAM Panel..........................................................................................................17

Figure 4-13 R8840 Physical Appearance...............................................................................18

Figure 4-14 R8840 External Interfaces..................................................................................18

Figure 4-15 R8860E Physical Appearance............................................................................19

Figure 4-16 R8860E External Interfaces................................................................................20

Figure 4-17 R8880A Physical Appearance............................................................................21

Figure 4-18 R8880A External Interfaces................................................................................21


Figure 4-20 R8882 External Interface....................................................................................23


Figure 4-24 R8890 External Interface....................................................................................25

Figure 4-25 BS8700 Software Structure................................................................................26

Figure 6-1 NetNumen M31 Elements Management System..................................................32

TABLES



Table 4-1 Main Board List of Baseband Unit..........................................................................10

Table 4-2 CC Panel Interface List..........................................................................................11

Table 4-3 FS Panel Interface List...........................................................................................13

Table 4-4 SA Panel Interface List...........................................................................................14

Table 4-5 SE Panel Interface List...........................................................................................15

Table 4-6 NIS Panel Interface List..........................................................................................16

Table 4-7 PM Panel Interface List...........................................................................................16

Table 4-8 Description of R8840 External Interface.................................................................18

Table 4-9 Description of R8860E External Interface..............................................................20

Table 4-10 Description of R8880A External Interface............................................................22

Table 4-11 Description of R8882 External Interface..............................................................23

Table 4-13 Description of R8890 External Interface..............................................................25

Table 5-1 ZXSDR BS8700 Technical Indices........................................................................28

Table 5-2 Description of BS8700 External Interface..............................................................31

Table 7-1 BS8700 Configuration for GSM Single Mode (R8860E, TOC 20W/TRX)..............35

Table 7-2 BS8700 Configuration for GSM Single Mode (R8882, TOC 20W/TRX)................36

Table 7-3 BS8700 Configuration for UMTS Single Mode (R8840/R8880A)...........................36

Table 7-4 BS8700 Configuration for UMTS Single Mode (R8860E)......................................36

Table 7-5 BS8700 Configuration UMTS Single Mode (R8882)..............................................37

Table 7-6 BS8700 Configuration for UMTS Single Mode (R8890).........................................37

Table 7-7 BS8700 Configuration for G/U Dual-Mode (Same Spectrum, R8860E).................37

Table 7-8 BS8700 Configuration for G/U Dual-Mode (Same Spectrum, R8882)...................37

Table 7-9 BS8700 Configuration for G/U Dual-Mode (Different Spectrums)..........................38

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BS BSC

2G BSS Only

Node B

Node B

RNC

RNC

HLR

PSTN

IP Network

MGW MSCS

SGSN GGSN

3G UTRAN Only

GSM MS

UMTS UE


1 OverviewIn 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.


SDR BS

SDR BS

BSC/RNC

HLR

PSTN

IP Network

MGW MSCS

SGSN GGSN

Software Defined Radio for both G/U systems

GSM MS

SDR BS flexibly configured as a GSM and UMTS system with only software configuration


Figure 1-2 ZTE SDR BS Composed GSM/UMTS Network

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/R8890: 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.

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UMTS


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.

2 Product HighlightsZXSDR BS8700 (hereafter BS8700) is the multi-carrier, dual-mode distributed base station of ZXSDR BS series. By adopting advanced MicroTCA platform and SDR technology, 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 and R8890.

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. With 3T6R design, R8890 supports 3 sectors simultaneously. 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

R8882 has the capability to support 4*2 GSM TRX or 2*2 UMTS carriers. If GSM and UMTS are configured at the same spectrum, each radio unit supports (4G+1U)*2 or (2G+2U)*2.

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, receiving diversity, 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 in the 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.

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

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 HSDPA and 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



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 4-4.

Figure 4-4 Example of ZXSDR BS8700 Physical Structure

4.2 Hardware Architecture

BS8700 hardware architecture is shown in Figure 4-5.


Baseband Unit

Radio UnitSA/SE/NIS CC

BP(UBPG/BPC)

/BPC)FS

RRU

E1

GE/FE

Clock

Data

Control Signaling

CPRI

Antenna

RF Unit

STM-1


Figure 4-5 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 60W*2 (TOC). R8880A can be configured as UMTS mode. R8880A supports 4*2 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 60W*2 (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 4*2 TRXs in GSM mode, or 1 to 2*2 carriers in UMTS mode. In dual-mode, one R8882 supports (4G+1U)*2 or (2G+2U)*2.

R8890 - 6 receiving paths and 3 transmitting paths (3T6R). Each one can support 3 sectors in UMTS mode on 2100MHz. R8890 supports 3*3 carriers.



4.2.1 Baseband Unit

Baseband unit in BS8700 is responsible for processing the baseband signals.

Figure 4-6 Baseband Unit of BS8700

The Baseband unit consists of control & clock board, fabric switch board, baseband processing board, site alarm board (optional), site alarm extension board, network Interface of STM-1 board (optional), power module, and fan module.

Table 4-1 Main Board List of Baseband Unit

Board Name Function Description

CC Control & Clock Board

FS Fabric Switch Board

UBPG Universal Baseband Processing board for GSM

BPC Base band Processing Board Type C for UMTS

SA Site Alarm Board

SE Site alarm Extension Board

NIS Network Interface of STM-1 Board

PM Power Module

FAM FAN Module

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 4-7.

Figure 4-7 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, adapting interface 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 and BSC/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 interface recovery 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

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 4-8.

Figure 4-8 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 4-9.

Figure 4-9 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 4-10.

Figure 4-10 FS Panel

Description of FS panel interfaces

Table 4-3 FS Panel Interface List


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 4-11.

Figure 4-11 SA Panel

Description of SA panel interface is shown in Table 4-4.

Table 4-4 SA Panel Interface List


-

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.

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 4-12.

Figure 4-12 SE Panel

Description of SE panel interfaces is shown in Table 4-5.

Table 4-5 SE Panel Interface List


-

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 Network Interface of STM-1 board (NIS)

NIS is STM-1 network interface board, and NIS panel is illustrated in Figure 4-13.

Figure 4-13 NIS Panel

Description of NIS panel interfaces is shown in Table 4-6.



Table 4-6 NIS Panel Interface List


- 2 STM-1

The NIS has the following functions:

2 STM-1fiber interfaces, supporting in spending processing, mapping and mapping solutions, space-division overlapping, supporting 21 E1 or 28 T1 most greatly to the STM-1 mapping.

Supporting the ADM/TM working.

Supporting the AU3/AU4 mapping way.

Supporting the APS protection function.

4.2.1.8 Power Module (PM)

PM is power module, and PM panel is illustrated in following figure.

Figure 4-14 PM Panel

Description of PM panel interface is shown as follows.

Table 4-7 PM Panel Interface List


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.

4.2.1.9 Fan Array Module (FAM)

FAM is fan array module which panel is illustrated as follows.

Figure 4-15 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 and R8890. Details are shown as below.

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. Dimension of R8840 is 370×320×160mm (H×W×D).



Figure 4-16 R8840 Physical Appearance

The external interfaces of R8840 system are integrated at the bottom of the equipment, as shown below. The interface description is shown in the following table.

Figure 4-17 R8840 External Interfaces

Table 4-8 Description of R8840 External Interface

S.N. Label Interface Interface Type/Connector

1 LC1BBU and RRU Interface /RRU cascading interface

LC-mode optical interface (IEC 874)



3 AISG AISG interface8-core aerial socket (IEC 60130-9-ED)



4 MonitorExternal device interface

37-pin aerial socket

5 PWR Power supply interface

AC interface: Connector XCE18T3K1P1-02+FJJP1-7.5Cable section area: 3*1 mm2

DC interface: Connector XCG18T4K1P1-01+XC18FJJP1-10.5Cable section area: 4*1.5 mm2

6 RXInterface to receive diversity RF cable

50 Ω N-mode connector

7 RX/TXInterface to transmit/receive main diversity RF cable

50 Ω N-mode connector

8 RXoutFrequency extension interface

N-KY (MIL-C-39012 or IEC169-16)

9 RXinFrequency extension interface

N-KY (MIL-C-39012 or IEC169-16)

10 GND Equipment grounding Cable section area: 16 mm2

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.

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. Dimension of R8860E is 370×320×197 mm (H×W×D).

Figure 4-18 R8860E Physical Appearance



R8860E external interface locates at the bottom of the cabinet, as shown below. The interface description is shown below.

Figure 4-19 R8860E External Interfaces

Table 4-9 Description of R8860E External Interface







4 MonExternal device interface


5 DC IN Power supply interface

DC interface:Connector XCG18T4K1P1-01+XC18FJJP1-10.5Section area of cable is 1.5 mm2


50 Ω DIN-mode connector

7 RX/TXInterface to transmit / receive main diversity RF cable


8 RXoutFrequency extension interface

N-KY (MIL-C-39012 or IEC169-16)

9 RXinFrequency extension interface

N-KY (MIL-C-39012 or IEC169-16)

10 GND Equipment grounding Cable section area: 16 mm2


1 2 3 4 5

6 7 8


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 60W*2 (TOC). It is mainly used for outdoor macro coverage and also used for indoor coverage signal source. R8880A supports 4*2 carriers.

R8880A employs compact cabinet design, as shown in the following figure. R8880A is 420 ×340×140 mm (H×W×D) and 19Kg in weight.

Figure 4-20 R8880A Physical Appearance

R8880A external interface locates at the bottom of the cabinet, as shown in the following figure. The interface description is shown in the following table.

Figure 4-21 R8880A External Interfaces



Table 4-10 Description of R8880A External Interface


1 OP1BBU and RRU Interface /RRU cascading interface


2 OP2BBU and RRU Interface /RRU cascading interface





5 PWRPower supply interface

DC interface:Connector XCG18T4K1P1-01+XC18FJJP1-10.5Section area of cable is 4*1.5 mm2

6ANT1(TX1/RX1)

Interface to transmit/receive diversity RF cable


7ANT2(TX2/RX2)

Interface to transmit/receive diversity RF cable


8 GNDEquipment grounding

Cable section area: 16 mm2

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 4*2 TRXs in GSM mode. In case of GMSK modulation, 60W*2 TOC output power can be provided. If R8882 is used as UMTS mode, it can support 2*2 carriers with 60W*2 TOC output power. In mixed mode, R8882 supports (4G+1U)*2 or (2G+2U)*2.

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 figure. Physical dimensioning is 480×320×150 mm (H×W×D) and 20 Kg in weight




R8882 external interface locates at the bottom of the cabinet, as shown below. The interface description is shown in the following table.

Figure 4-23 R8882 External Interface





1 PWRPower supply interface

DC interface:Connector GJ599/20-C06PN-H//J599/20M1C06aPHNSection area of cable is 4*1.5MM2+2*0.4MM2

2 AISG AISG interface 8-core aerial socket (IEC 60130-9-ED)

3 EAMExternal device interface

Connector JL61K-8T//YJM1-8TK//YL2-8TK-1SEYYP-100 5PX26AWG

4 OPT1BBU and RRU Interface/RRU cascading interface


5 OPT2BBU and RRU Interface/RRU cascading interface


6 TX/RXInterface to transmit/receive diversity RF cable






9 TX/RXInterface to transmit / receive diversity RF cable


4.2.2.5 R8890

R8890 is a multi-carrier RF module. R8890 can be configured as UMTS mode. It processes 6 received signals and 3 transmitted signals. Each one can support 3 sectors in UMTS mode on 2100MHz. Its output power achieves up to 60W*3 (TOC). It is mainly used for outdoor macro coverage and also used for indoor coverage signal source. R8890 supports 3*3 carriers.

R8890 employs compact cabinet design, as shown below. R8890 is 385 ×452×155 mm (H×W×D) and 27 Kg in weight.




R8890 external interfaces locate at the bottom of the cabinet, as shown below. The interface description is shown in the following table.

Figure 4-25 R8890 External Interface







3 AISG AISG interface 8-core aerial socket (IEC 60130-9-



ED)











9 RX/TXInterface to receive diversity RF cable


10 RXInterface to transmit/receive main diversity RF cable


11 PWR Power supply interface

DC interface:Connector XCG18T4K1P1-01+XC18FJJP1-10.5Section area of cable is 4*1.5 mm2

4.3 Software Architecture

The software system of BS8700 consists of operating support layer and application layer.



Figure 4-26 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 and active/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.



5 Technical Indices

5.1 Technical Indices

Table 5-13 ZXSDR BS8700 Technical Indices

Type Item Indices

Physical Indices

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

R8890 385*452*155

Weight(kg)

B8200 8.75

R8840 16.5

R8860E 20

R8880A 19

R8882 20

R8890 27

PerformanceIndices

Working Frequency

R8840 2100 MHz/AWS

R8860E 850/900/1800/1900 MHz

R8880A 2100 MHz

R8882 900/1800 MHz

R8890 2100 MHz

Capacity

BBU

Maximum Carrier

30 CS (UMTS single mode)

Max Carrier/TRX

60 TRX (GSM single mode)

Max Channel Element for UMTS

UL: 960 CEDL: 960 CE

Max Channels Per Cell for UMTS

123

Max Throughput

UL: 75 MbpsDL: 216 Mbps

RRU R8840 (1T2R) U: 4 C

R8860E (1T2R) G: 6 TRXU: 4 CGU: 4 TRX+ 1 C



R8880A (2T2R) U: 4*2 C

R8882 (2T4R)

G: 4*2 TRXU: 2*2 CGU: (4 TRX + 1 C)*2 / (2 TRX + 2 C)*2

R8890 (3T6R) U: 3*3 C

Output Power

RRU Type Output Power (TOC)

R8840 60W

R8860E 80W

R8880A 60W*2

R8882 60W*2

R8890 60W*3

Receiving Sensitivity

-113.5 dBm @ GSM Single Antenna-126.5 dBm @ UMTS single antenna -129.2 dBm @ UMTS double antennas

PowerIndices

Power supply, voltage range of variation

B8200 DC: -48 V (-40 V - -57 V DC)

R8840DC: -48 V (-35 V - -60 V DC)AC: 110 V/220 V (90 V – 290 V AC)

R8860EDC: -48 V (-37 V - -57 V DC)AC: 110 V/220 V (90 V – 290 V AC)

R8880A/R8890DC: -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)

Power Consumption

Indices

UMTS single mode

TypeTypical Power Consumption (W)

B8200 6CS/1 BPC 80

B8200 12CS/2 BPC 115

B8200 18CS/3 BPC 145

B8200 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/TOC 160



20W

R8882 (900M) S11 2PA/TOC 40W

265

R8882 (900M) S2 1PA/TOC 40W

190

R8882 (900M) S22 2PA/TOC 80W

325

R8890 S111/TOC 20*3W 210

R8890 S222/TOC 40*3W 315

R8890 S333/TOC 60W*3 405

GSM Single Mode

R8860E (900M) S4/TOC 80W 200

R8882 (900MHz) S1 1PA/TOC 20W

180

R8882 (900MHz) S3 1PA/TOC 60W

195

R8882 (900MHz) S6 1PA/TOC 60W*2

300

G/U Dual-Mode

R8860E 4G1U/TOC 15*4 W (GSM)+20W (UMTS)

215

R8882 (900M) 4G1U 1PA/TOC 10*4 W (GSM)+20W (UMTS)

200

EnvironmentIndices

Temperature

BBU: -20°C - +55°CRRU: R8840/R8860E/R8880A/R8882: -40°C - +55°CR8890: -40°C - +50°C

Relative Humidity

BBU: 5% - 95%RRU: 5% - 100%

Waterproof/Dustproof

BBU: IP20RRU: IP65

Ground ≤5Ω

EMC IndicesNational/

International Standard

YD/T 1595.2-2007ETSI EN 301 489-01, ETSI EN 301 489-23ETSI EN 300 386–V1.3.2(CISPR22) Class BDirective 1999/5/EC (R&TTE)

Reliability Indices

MTBF

BBU: ≥233,000 hoursR8840: ≥420,000 hoursR8860E: ≥380,000 hoursR8880A: ≥354,000 hoursR8882: ≥322,000 hoursR8890: ≥280,000 hours

MTTR BBU: 0.5 hoursRRU: 1 hours



Availability

BBU: ≥99.999785%R8840: ≥99.999762%R8860E: ≥99.999868%R8880A: ≥99.999718% R8882: ≥99.999689%R8890: ≥99.999643%

Down Duration

BBU: ≤1.128 min/yearR8840: ≤1.251 min/yearR8860E: ≤1.383 min/yearR8880A: ≤1.485 min/yearR8882: ≤1.632 min/yearR8890: ≤1.877 min/year

5.2 External Interface

ZXSDR BS8700 has abundant external interfaces which are described below.

Table 5-14 Description of BS8700 External Interface

Interface Item IndexInterface

TypeStandard

Abis/Iub

STM-1 2 (optional) SFP (LC)ITU G.957ITU G.707

E1/T116 (8 pairs of optional)

DB44 ITU G.703/G.704

Ethernet

1 (10M/100M/1000M electrical)Auto-NegotiationAuto-MDI/MDIX

RJ4510/100/1000BASE-T IEEE 802.3 compatible

1 (1000M optical) or1 (100M optical)

SFP (LC)

1000BASE-LX IEEE 802.3 compatible100BASE-FX IEEE 802.3 compatible

Clock GPS 1 SMAGPS Antenna InterfaceNMEA 0183 V3.0

Baseband Monitor & Alarm

Dry Contacts

6 (Input), 2 (Input / Output)

DB44 -

RS485 1 DB44 -

RF Monitor & Alarm

Dry Contacts

4 per RRU DB15 -

RS485 1 per RRU DB15 -



6 Operation and MaintenanceThe 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 6-27 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.



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 the management 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



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.



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 4*2 TRXs.

In UMTS single mode, R8840 and R8860E supports 4 carriers, R8880A supports 4*2 carriers, R8882 supports 2*2 carriers, and R8890 can support 3*3 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 (4G+1U)*2 or (2G+2U)*2.

7.3 GSM Single Mode Configuration Principles

R8860E or R8882 is configured for GSM single mode, which is based on multi-carrier technology.



7.3.1 R8860E Configuration

Table 7-15 BS8700 Configuration for GSM Single Mode (R8860E, TOC 20W/TRX)

Site Type R8860E Qty B8200 Qty UBPG Qty

S4/4/4 3 1 1

S6/6/6 3 1 2

S12/12/12 6 1 3

7.3.2 R8882 Configuration

Table 7-16 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 or R8890 is configured for UMTS single mode.

7.4.1 R8840/R8880A Configuration

Table 7-17 BS8700 Configuration for UMTS Single Mode (R8840/R8880A)

Site Type R8840/R8880A Qty B8200 QtyBPC Qty

S1/1/1 3 1 1

S2/2/2 3 1 1

S3/3/3 3 1 2

S2/2/2/2/2/2 6 1 2



7.4.2 R8860E Configuration

Table 7-18 BS8700 Configuration for UMTS Single Mode (R8860E)

Site Type R8860E Qty B8200 QtyBPC Qty

S1/1/1 3 1 1

S2/2/2 3 1 1

S4/4/4 3 1 2

S2/2/2/2/2/2 6 1 2


Table 7-19 BS8700 Configuration UMTS Single Mode (R8882)

Site Type R8882 Qty B8200 QtyBPC Qty

S1/1/1 2 1 1

S2/2/2 2 1 1

S2/2/2/2/2/2 3 1 2


Table 7-20 BS8700 Configuration for UMTS Single Mode (R8890)

Site Type R8890 Qty B8200 QtyBPC Qty

S1/1/1 1 1 1

S2/2/2 1 1 1

S2/2/2/2/2/2 2 1 2

7.5 GSM/UMTS Dual-Mode Configuration Principles

7.5.1 GSM 850M/900M/1800M/1900M and UMTS 850M/900M/1800M/1900M Dual-Mode Network in Same Spectrum

R8860E can be configured in 850/900/1800/1900M G/U dual-mode.



Table 7-21 BS8700 Configuration for G/U Dual-Mode (Same Spectrum, R8860E)

Site Type R8860E Qty B8200 Qty UBPG Qty BPC Qty

G:S444+U:S111 3 1 1 1

G: S222+U:S222 3 1 1 1

G: S666+U:S333 6 1 2 2

R8882 can be configured in 900/1800 for G/U dual-mode.

Table 7-22 BS8700 Configuration for G/U Dual-Mode (Same Spectrum, R8882)

Site Type R8882 Qty B8200 Qty UBPG Qty BPC Qty

G:S888+U:S222 3 1 2 1

G: S444+U:S444 3 1 1 2

7.5.2 GSM 900M/1800M and UMTS 2100M Dual-Mode Network in Different Spectrums

R8840/R8880A and R8860E/R8882 are configured simultaneously in this scenario, R8840 or R8880A is used for UMTS 2100M while R8860E/R8882 is used for GSM mode.

Wideband combiner is required in the mode of co-feeder-line and co-antenna.

Table 7-23 BS8700 Configuration for G/U Dual-Mode (Different Spectrums)

Site TypeR8840/R8880A

QtyR8882

QtyB8200

QtyUBPG

QtyBPC Qty

U:S222(2100M) + G:S8/8/8(900/1800M)

3 3 1 2 1



8 Acronyms and AbbreviationAbbreviations Full Characteristics

3GPP 3rd Generation Partnership Project

64QAM 64 grade Quadrature Amplitude Modulation

AGPS Assisted GPS

AMR Adaptive Multi Rate

BB Base Band

BBS Base Band Sub-system

BBU Base Band processing Unit

BCCH Broadcast Control Channel

BITS Building Integrated Timing Supply

BP Base band Processing

BPC Base band Processing Board Type C for UMTS

BRACS Bearer Access Control Sub-system

BRS Bearer Sub-system

BSC Base Station Controller

BSP Board Support Package

BTS Base Transceiver Station

CAPEX Capital Expenditure

CC Control & Clock

CE Channel Element

CN Core Network

CORBA Common Object Request Broker Architecture

CPRI Common Public Radio Interface

CS Carrier Sector

DBS Data Base Sub-system

DL Down Link

DTX Discontinuous transmission

EDGE Enhanced Data rates for GSM Evolution

E-EDGE Enhanced EDGE

EFR Enhanced Full Rate

FAM Fan Module

FE Fast Ethernet

FP Frame Protocol

FR Full Rate

FS Fabric Switch

GE Gigabit Ethernet

GERAN GSM Edge Radio Access Network



GPS Global Positioning System

GSM Global System for Mobile communications

HR Half Rate

HSPA+ HSPA Evolution

LMT Local Maintenance Terminal

LTE Long Term Evolution

MicroTCA Micro Telecommunications Computing Architecture

MIMO Multi Input Multi Output

MS/UE Mobile Station/User Equipment

MTBF Mean Time Between Failures

MTTR Mean Time To Recovery

NBAP Node B Application Part

NIS Network Interface of STM-1

NM NetNumen, Name of ZTE OMCR

NMS Network Management System

NOP Network Optimization & Planning

OAM Operating And Maintenance

OPEX Operation Expenditure

OSS Operation Support Sub-system

PM Power Module

PS Packet Switch

PtM Point to Multi-point

PtP Point to Point

RCS Radio Control Sub-system

RF Radio Frequency

RNC Radio Network Controller

RRU Remote Radio Unit

RTT Round Trip Time

SA Site Alarm

SCS System Control Sub-system

SDH Synchronous Digital Hierarchy

SDR Software Defined Radio

SE Site Alarm Extension

SNMP Simple Network Management Protocol

TA Time Advance

TNS Transport Network Sub-system

UBPG Universal Base band Processing for GSM

UL Up Link

UTRAN UMTS Terrestrial Radio Access Network

WCDMA Wideband Code Division Multiple Access


110117_B4.1.1.2 ZXSDR BS8700 Product Description_ZTE

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