Zxsdr bs8800 product description

Product Type Technical Proposal

ZTE Confidential Proprietary © 2008 ZTE Corporation. All rights reserved. I

ZXSDR BS8800 Product Description


ZTE Confidential Proprietary © 2008 ZTE Corporation. All rights reserved. I


Version Date Author Approved By Remarks

V1.00 2009-06-12 Not open to the Third Party

2009-07-03 Li Chunying Modify the TOC indice

2010-01-18 Li Chunying Modify Outer view

2010-02-09 Xu Zihua

Li Chunying Modify Standards Complied

2010-07-09 Li Chunying Modify power consumption and band.etc.

2010-08-17 Li Chunying Modify the chapter 6.6.1

2010-08-24 Li Chunying Add the indices explanation of Power Consumption

© 2010 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.


ZTE Confidential Proprietary © 2008 ZTE Corporation. All rights reserved. II

TABLE OF CONTENTS

1 Overview ..................................................................................................................... 5

2 Highlight Features ...................................................................................................... 6

3 Functionalities ............................................................................................................ 8

4 System Architecture ................................................................................................ 10 4.1 System Architecture ................................................................................................... 10 4.2 ZXSDR BS8800 Position in CDMA Network ............................................................. 12 4.3 Modules of BBU ......................................................................................................... 13 4.3.1 Control and Clock Module (CC) ................................................................................. 13 4.3.2 Channel Handling Module (CH) ................................................................................. 13 4.3.3 Channel Processing Voice & RF Interface Module (CVI) .......................................... 14 4.3.4 Site Alarm Module (SA) ............................................................................................. 14 4.3.5 Site Alarm Extender (SE) ........................................................................................... 15 4.3.6 Fan Array Module (FA) .............................................................................................. 15 4.3.7 Power Module (PM) ................................................................................................... 15 4.4 RSU Module............................................................................................................... 15 4.4.1 Duplex Filter & LNA (DFL) ......................................................................................... 15 4.4.2 Transceiver and Receiver (RTR) ............................................................................... 16 4.4.3 Power Amplifier (PA) ................................................................................................. 17 4.4.4 RRU DC Power Supply (RPDC) ................................................................................ 17 4.5 Power Distribute Module (PDM) ................................................................................ 17 4.6 Software System ........................................................................................................ 17

5 Technical Specifications ......................................................................................... 19 5.1 Physical Indices ......................................................................................................... 19 5.1.1 Outer View ................................................................................................................. 19 5.1.2 Dimentions ................................................................................................................. 19 5.1.3 Gross Weight ............................................................................................................. 19 5.2 Power ......................................................................................................................... 19 5.2.1 Power System Range ................................................................................................ 19 5.2.2 Power Comsumption ................................................................................................. 19 5.3 Temperature and Humidity Requirement .................................................................. 20 5.4 Interface Indices ........................................................................................................ 20 5.5 Capacity Indices ........................................................................................................ 21 5.6 Environmental Classes .............................................................................................. 21 5.6.1 Grade Of Protection ................................................................................................... 21 5.6.2 Grounding Requirements ........................................................................................... 21 5.6.3 Noise Requirments .................................................................................................... 21 5.7 Reliability Indices ....................................................................................................... 22 5.8 RF Indices .................................................................................................................. 22 5.9 BTS Clock Indices ..................................................................................................... 26

6 Networking Mode and Application ......................................................................... 27 6.1 Networking Mode ....................................................................................................... 27 6.1.1 Abis Interface Networking Mode ................................................................................ 27 6.1.2 Baseband-RF Networking Mode................................................................................ 28 6.2 Applications................................................................................................................ 28 6.3 Multi-Band Application ............................................................................................... 29


ZTE Confidential Proprietary © 2008 ZTE Corporation. All rights reserved. III

7 Appendix A: Standards Complied .......................................................................... 30

8 Appendix B: Abbreviations ..................................................................................... 32


ZTE Confidential Proprietary © 2008 ZTE Corporation. All rights reserved. IV

FIGURES

Figure 1 ZXSDR BS8800 Module Layout .................................................................................. 10

Figure 2 ZXSDR BS8800 Structure ........................................................................................... 11

Figure 3 ZXSDR BS8800 Position in CDMA Network ............................................................... 12

Figure 4 ZXSDR BS8800 Outer View ........................................................................................ 19

Figure 5 Abis Interface Networking Mode .................................................................................. 27

Figure 6 Baseband-Fiber Remote Interface Networking ........................................................... 28

Figure 7 Dual-band BS8800 ....................................................................................................... 29

Figure 8 Multi-band BS8800 ...................................................................................................... 29

TABLES

Table 1 Primary Functions of ZXSDR BS8800 ........................................................................... 8

Table 2 Normal Power Consumption with -48 V DC Power Supply ......................................... 20

Table 3 Normal Power Consumption with -48 V DC Power Supply (RSU:105W) .................... 20

Table 4 Temperature Requirement ........................................................................................... 20

Table 5 Interface Indices ........................................................................................................... 20

Table 6 Transmitter indices (Band Class 0 (800MHz), Band Class 5 (450MHz)) .................... 22

Table 7 Transmitter indices (1.9GHz,2.1GHz and AWS) ......................................................... 23

Table 8 Receiver indices (Band Class 0 (800MHz), Band Class 5 (450MHz)) ........................ 25

Table 9 Receiver indices (1.9GHz,2.1GHz and AWS) ............................................................. 25

Table 10 Abbreviations ............................................................................................................... 32


ZTE Confidential Proprietary © 2008 ZTE Corporation. All rights reserved. 5

1 Overview

With growing competition in the telecommunication field, besides developing new services and attracting more subscribers, wireless operators also pay more attention on controlling effective Capital Expenditure (CAPEX) and Operation Expenditure (OPEX).

ZTE provides more competitive telecommunication equipment and solution for clients and puts forward ZXSDR BS8800, which is the integrated BTS solution of CDMA2000.

ZXSDR BS8800 is based on the common BTS platform that is focused on supporting future B3G and 4G technologies. The same hardware platform will support different technologies. The operators can have smooth and flexible innovation to the future technology and in turn protect the current network investment.



2 Highlight Features

By using an All-IP structure, ZTE’s new-generation ZXSDR BS8800 can fully satisfy user demands for multiple services. It features small size, large capacity, small weight, high power, multiple services and various ways of transmission. Moreover, it can be installed against the wall. The industry-leading ZXSDR BS8800 has the following advantages.

Larger capacity to minimize CAPEX

A single 19-inch cabinet can supply up to 48 carrier-sectors for 1X or DO service.

With a large capacity, the ZXSDR BS8800 not only reduces the number of BTSs used in areas with heavy traffic, but also saves the construction cost in auxiliary facilities such as transmission, equipment room and tower, thus minimizing the CAPEX of network deployment and future capacity expansion.

Installation against the Wall

The ZXSDR BS8800 can be installed against the wall, and all operations and maintenance activities for it can be conducted at the front door, helping installation and maintenance and saving the equipment room space.

Broadband RF

The modules of RF System Unit (RSU) support a broad frequency band. Six carriers within 20MHz bandwidth can be flexibly configured.

Base Band Unit (BBU) is based on advanced micro-Telecom Computing

Architecture (uTCA), which will lead to smooth evolution in future.

ZTE is the first vendor to develop a BBU based on the uTCA architecture and takes the lead of the advanced technology in the telecommunication industry. The uTCA adopts the standard template, compact design and block architecture, which makes the operation more effective and of higher performance-price ratio. Moreover, the power-on management mode of uTCA is more reliable.

The same common BBU platform will support GSM/CDMA/WCDMA/TD-SCDMA technologies by replacing the channel boards. The same platform can be upgraded smoothly to the future 4G technologies, such as LTE, and WiMAX 16m.

It also supports multi-mode BTS types. The same BBU can support 1X+DO+LTE simultaneously.

Abis interface over the Ethernet access solution will help to deploy the network

quickly and reduce the deployment cost.

The expense of building and renting IP network is comparatively cheaper than E1/T1, which means lower CAPEX and OPEX in transmission for the operator.

Ethernet access can supply a larger bandwidth to meet media services’ (data and video) requirements with fast development.

Compared to E1/T1, IP networking modes are flexible and expandable. It is easy to fulfill cross-area networking and capacity expansion.

Advanced ARIR Function



It supports the advanced Adaptive Reverse Interference Resistance (ARIR) function against reverse narrowband interference and adapts to complicated wireless environments.

ZTE’s ARIR function supports multi-carrier reverse interference resistance.

ZTE’s ARIR function is suitable for the total interference with the bandwidth of less than 300 kHz, and is most suitable for the interference with the bandwidth of less than 50 kHz.



3 Functionalities

The primary functions of ZXSDR BS8800 are listed in the following Table 1.

Table 1 Primary Functions of ZXSDR BS8800

Function Category Function Description

Basic Baseband Function

Modulation/Demodulation (one cabinet can provide maximum 48 1X or DO carrier-sectors)

Wireless resource management

Call processing

Handoff control

Power control

GPS timing and synchronization

Basic RF Functions Band: 450MHz/800MHz/1.9G/2.1GHz/AWS

RF modulation/demodulation

RF transceiver duplexer

Low noise amplification for received RF signal

Amplification for transmitted RF signal

RF transceiver

Interface The Baseband-RF interface supports Common Public Radio Interface (CPRI) protocol.

The Abis interface supports IP Over Ethernet access.

The Abis supports IP Over E1/T1 access.

Air interface: compliant with IS-2000 Release A and IS-856-A

Local debugging and maintenance interface: Ethernet

Networking Support for the remote application of RRU; networking modes including star and chain.

Support for the cascading networking mode of RRU, the highest up to 6 levels.

Support for cascade of BBUs

The Abis interface supports the daisy chain access by IP Over E1/T1.

Environment Monitoring

External RS232/RS485 monitoring interfaces

Dry contacts: 8 inputs; or 6 inputs and 2 outputs

Input power: undervoltage/overvoltage alarm

Output power: undervoltage/overvoltage alarm

Power: overcurrent alarm

Environment temperature alarm

Equipment Maintenance

Support of front-maintenance

Remote upgrade of software version for FPGA/BOOT/DSP/CPU



Function Category Function Description

Remote reset and power off of service boards

Electronic label

Power query: baseband power, RF power and antenna output power

Automatic calibration

RSSI query

Reverse spectrum query: querying the reverse received signal spectrum of each carrier

Monitoring alarm for antenna standing wave ratio

Power amplification control and protection: over-power, over-temperature and standing wave alarm

Reliability Reverse voltage protection

Key boards support the active/standby or load-sharing mode.



4 System Architecture

A single ZXSDR BS8800 cabinet supports 48 carrier-sectors for CDMA2000 1X or 1xEV-DO service.

4.1 System Architecture

The ZXSDR BS8800 module layout is shown as below.

PM

PM

SA SE/CHCC

CC CH

CH

CHCVI

CVI/CH

F

A

N

R

S

U

R

S

U

R

S

U

R

S

U

R

S

U

R

S

U

FAN

PDM

PM

PM

SA SE/CHCC

CC CH

CH

CH F

A

N

CVI

CVI/CH

Figure 1 ZXSDR BS8800 Module Layout

The ZXSDR BS8800 consists of BBU and RSU. The BBU is connected to RSU via fiber.

The typical configuration of the BS8800 is one BBU and three or six RSUs.

With the maximum configuration, a single cabinet supports two BBUs and six RSUs.

The BS8800 can be configured with an RF cabinet on its top to support 12 RSUs or nine RSUs and three combiners.

To support combind cabinets, two ports (one Rx out and one Rx in) are reserved for the RSU.

The BBU is composed of the following modules:

Control and Clock Module (CC)

BBU

BBU



Channel Handling Module (CH)

Channel Processing Voice & RF Interface Module (CVI)

Site Alarm Module (SA)

Site Alarm Extender (SE)

Fan Array Module (FA)

Power Module (PM)

The RSU module consists of four parts:

Duplex Filter & LNA (DFL)

Transceiver and Receiver (RTR)

Power Amplifier (PA)

RRU DC Power (RPDC)

The ZXSDR BS8800 structure is shown in Figure 2.

CRUCRU

BBU

GPS

Antenna

ECCM

SA

E1/T1

IP Transfer to BSCIP Cloud

Fiber

Abis FE/GE

Clock

CH

CCGE

SW

CVIIQ

SW

SE

IQ

GE

RSU PA

RTR

TX

RX0

DFL

ant1 ant0

RX1

Figure 2 ZXSDR BS8800 Structure

ZXSDR BS8800 internal signal flow is as follows:



Forward

The data from BSC goes into the BBU through the CC. The CC terminates IP transmission protocol over Abis interface; The CC sends the data to CVI via Gigabit Ethernet (GE). The CVI performs modulation, multiplexing and IQ switching of the data. After de-multiplexing, frame generation, parallel-to-serial conversion, the data is finally distributed to RSU via CPRI interface.

The TR receives the data after baseband modulation via the CPRI interface, performs up conversion of the data, and then sends the data to the PA. The PA amplifies the power of the input signal from the TR and then sends it to the DFL. The DFL processes the RF signal and then sends it via the antenna.

Reverse

The reverse CDMA signal from the antenna is sent to the TR after through the DFL. Then the CDMA signal is converted to a baseband digital signal by the TR and sent to the baseband via the CPRI interface.

After receiving the baseband signal from the RSU, the IQ SW of the CVI demultiplexes and demodulates the signal to get a service packet. Then the CVI converts the service packet to Ethernet frames and send the frames to the CC via GE. Then the CC processes the transmission protocol of Abis interface over IP and sends it to the BSC through E1/T1 or Ethernet. T

4.2 ZXSDR BS8800 Position in CDMA Network

The position of ZXSDR BS8800 in CDMA mobile communication network is shown in Figure 3.

BS8800

BSC

BSC

RSU BBU

RRU

MSC

AGW

/PDSN

BSC

MSCMSC

MGW

PCF

BSC

PCF

MSMS

MSMS

MSMS

BS8800

RSU

......

BBU

Um

Air Interface

Baseband-RF

interface

CPRI

ABIS

interface A3/A7

interfaceA InterfaceA8/A9

interface

Figure 3 ZXSDR BS8800 Position in CDMA Network

The ZXSDR BS8800 consists of Baseband Unit (BBU) and RF System Unit (RSU). As a Base Transceiver Station (BTS), The ZXSDR BS8800 is located between the BSC and the MS in the CDMA2000 network.



Connecting with the BSC through the Abis interface, the BTS helps the Base Station Controller (BSC) manage radio resources, radio parameters and interfaces. Over the Um interface, it also transmits and receives radio signals to enable the communication between the radio network system and the Mobile Station/Access Terminal (MS/AT), as well as implements related control functions.

ZXSDR BS8800 provides the following interfaces:

Abis interface

The ZXSDR BS8800 communicates with the BSC via Abis interface. The Abis interface is an internal interface of system and supports two interface modes:

Based on the IP over E1/T1, adopts the recommended-standard protocol stack CUDP\PPPMUX\MP\HDLC.

Based on the IP Over Ethernet.

Um interface

Um interface is the interface between the Mobile Station (MS) and the BTS. It conforms to the standards IS-2000 Release A and IS-856-A standards.

4.3 Modules of BBU

4.3.1 Control and Clock Module (CC)

CC has the following functions:

GPS timing

Receiving GPS signal and providing system clock and RF reference clock.

Distributing system clock signal.

GE Ethernet switching

Providing switching platform for signaling and media stream respectively.

External interfaces

Abis interface: 1 Ethernet port (optic or RJ45 port)

One local operation and maintenance port - FE port.

Supporting active/standby working mode

4.3.2 Channel Handling Module (CH)

Channel processing module (CH) mainly completes baseband forward modulation and reverse demodulation, and implements CDMA key technologies like diversity technology, RAKE receiver, softer handoff, and power control.

CH includes CHV (based on CSM6700 chip) and CHD (based on CSM6800 chip). CHV supports CDMA2000 1x and CHD supports 1x EV-DO.

The ZXSDR BS8800 system supports mixed configuration of CHD and CHV for both 1x and EV-DO services.

Forward modulation and reverse demodulation support the following physical channels:



Forward: Pilot Channel , Sync Channel, Paging Channel, Quick Paging channel,

Dedicated Control Channel, Forward Foundmental Channel, Forward Supplemental

Channel and Forward Supplemental Code Channel

Reverse: Reverse Pilot Channel, Access Channel, Reverse Foundmental Channel,

Reverse Supplemental Channel and Reverse Dedicated Control Channel.

Note: It is necessary to configure CHs only when the system's 1X voice capacity exceeds 2C3S or the system provides EV-DO services.

4.3.3 Channel Processing Voice & RF Interface Module (CVI)

The Channel Processing Voice & RF Interface Module (CVI) implements the following functions:

Remote baseband-RF CPRI interface

Support four remote baseband-RF CPRI interfaces

Forward: the CVI multiplexes and frames the baseband data and then connects to the RRU through an optical interface.

Reverse: The CVI performs deframing and demultiplexing of the data from the RRU and then sends it to the BBU.

IQ switching

The CVI supports IQ switching with other channel boards in other AMC slots to implement channel sharing.

1X channel processing

Implement a variety of key technologies: diversity, RAKE receiver, softer handoff and power control.

Implement forward modulation and reverse demodulation of baseband signal.

Forward modulation and reverse demodulation support the following physical channels:

Forward: Pilot Channel, Sync Channel, Paging Channel, Quick Paging channel, Dedicated Control Channel, Forward Foundmental Channel, Forward Supplemental Channel and Forward Supplemental Code Channel

Reverse: Reverse Pilot Channel, Access Channel, Reverse Foundmental Channel, Reverse Supplemental Channel and Reverse Dedicated Control Channel.

4.3.4 Site Alarm Module (SA)

Site alarm module (SA) has the following functions of:



Control and alarm for the fans

Monitoring interfaces

External RS485/RS232 environment monitoring ports

Dry contacts: 8 inputs; or 6 inputs and 2 outputs

Abis interface: 8 E1/T1 interface

4.3.5 Site Alarm Extender (SE)

Site alarm extender (SE) has the following functions:

Monitoring interfaces

External RS485/RS232 environment monitoring ports.

Dry contacts: 8 inputs; or 6 inputs and 2 outputs.

Abis interface: up to 8 E1s/T1s

4.3.6 Fan Array Module (FA)

The Fan Array Module (FA) provides speed control for the fans and temperature detection for the air inlet.

4.3.7 Power Module (PM)

The Power Module (PM) is the power module in ZXSDR BS8800, which performs processing and distribution for the -48 V DC power source input.

4.4 RSU Module

The RSU60 (1T2R) or RSU82 (2T4R) can be used as the RF functional entity.

As the first double-density module in CDMA field, RSU82 can be mounted in such system models as BS8906E, BS8800, and BS8900. It can be applied in double-sector 1T2R, single-sector high carrier, high power and dual band, etc. Its hardware supports LTE, and software upgrade can achieve CDMA/LTE mixed mode.

4.4.1 Duplex Filter & LNA (DFL)

The DFL has the following functions:

Performs filtering and low noise amplification of the reverse CDMA signal from the

antenna.

Filters the forward RF signal to be sent.

Reports LNA alarms to the RTR.

In the case of main/diversity combined cabinets, the main receive LNA output end

of the DFL has the power splitter function and reserves an external port (Rx out).



4.4.2 Transceiver and Receiver (RTR)

The RTR is the main control module of the RSU. It performs communication, control, and alarm and version management for the RSU.

The RTR has the following functions of:

Forward link processing

Conversion from baseband signal to RF signal

Conversion of output IQ data format

Power calibration and detection processing

Peak clipping/digital pre-distortion processing

Digital IF processing

Gain adjustment (calibration)

Reverse link processing

Conversion from RF signal to baseband signal

Digital IF processing

RSSI and RAB report

In-band anti-interference function

Spectrum report

Automatic Gain Control (AGC)

Output IQ data format conversion

Supports switching between different receive channel signals in the case of main/diversity combined cabinets.

Clock processing function

Performs clock recovery for data on the CPRI between the RSU and the BBU generating a reference clock source. Performs phase lock for the reference clock by utilizing a local high-stability clock. The working clocks generated include the master clock, frame- frequency clock, digital processing clock and RF baseband clock.

Monitoring function

PA forward power detection function: when the temperature threshold is exceeded, the RTR reports the relevant alarm and controls the PA through the PA output enable/disable signal.

PA reversed power (standing wave ratio) detection function: when the temperature threshold standing of the standing wave ratio is exceeded, the RTR reports the relevant alarm and controls the PA through the PA output enable/disable signal.

PA temperature detection function: When the temperature threshold is exceeded, the RTR reports the relevant alarm and controls the PA through the PA output enable/disable signal.

PA output enable/disable

RTR transmit output power detection

DFL two-channel LNA alarm detection and report

RPDC input undervoltage/overvoltage alarm detection and report



RPDC output undervoltage/overvoltage alarm detection and report

RPDC output overcurrent alarm detection and report

System environment monitoring

CPRI self-test alarm

Key chip self-test alarm

4.4.3 Power Amplifier (PA)

The PA has the following functions:

Amplifies downlink RF signal input via the RTR and then sends the signal to the

DFL.

Provides digital pre-distortion feedback signals for the RTR.

Provides a PA output enable/disable interface.

4.4.4 RRU DC Power Supply (RPDC)

The RPDC converts –48 V DC input power supply to DC power supply required by the PA, RTR, or DFL.

4.5 Power Distribute Module (PDM)

The PDM Module provides independent power switch for every RSU.

4.6 Software System

The software system of ZXSDR BS8800 consists of five parts:

Operating System Subsystem (OSS)

Service Processing Subsystem (SPS)

Operation and Maintenance Center (OMC)

Database Subsystem (DBS)

Channel Element Subsystem (CES)

The functions of each software module are shown as below:

OSS

Provides the dispatching and management of the processes and the external interfaces which comply with the SDL standards

Provides communication between the processes located in different positions.

Implements the control for running status and running order of each hardware subsystem.

Provides drivers for lower layer’s hardware and communication ports.

Provides the management for the foreground file system.



SPS

Call processing

Mobility management

Radio resource management

PCF function

DBS

Maintenance functions for data table, queue and index.

Provides different data view for application layer and various dispatching interfaces for data query.

Consistency verification and validation for data.

Data configuration management.

Synchronization functions for background and foreground data.

Resources assignment and release functions.

SCH channel dispatching, fast resource assignment and release.

CES subsystem

CSM chipset driver, implements IS-2000 physical layer modulation/demodulation, coding/decoding functions.

Functions of IS-2000 MAC layer and partial functions of SAR sub-layer in LAC layer for Control Channel.

OMC subsystem

Provides the statistics for the performance index of the software and hardware subsystems.

Diagnosis and testing

Alarm collection and management

Software downloading function

Signaling tracing for SPS subsystem

Service observation for SPS subsystem

Local maintenance



5 Technical Specifications

5.1 Physical Indices

5.1.1 Outer View

The ZXSDR BS8800 outer view is shown in Figure 4.

Figure 4 ZXSDR BS8800 Outer View

5.1.2 Dimentions

Dimensions of single cabinet (H*W*D): 950mm*600mm*450mm

5.1.3 Gross Weight

Weight: < =144 kg (for six sectors)

5.2 Power

5.2.1 Power System Range

Power supply: -48 V DC

Voltage range: -18 V to -62 V

5.2.2 Power Comsumption

The normal power consumption with -48 V DC power supply is shown in Table 2 and Table 3.



Table 2 Normal Power Consumption with -48 V DC Power Supply

Typical Configuration Power Typical Power Consumption

S111 20W/C/S 390 W

S222 20W/C/S 560 W

S333 20W/C/S 740 W

S444 20W/C/S 920 W

S555 20W/C/S 1190 W

S666 20W/C/S 1370 W

S777 20W/C/S 1540 W

S888 20W/C/S 1720 W

Table 3 Normal Power Consumption with -48 V DC Power Supply (RSU:105W)

Typical Configuration Power Typical Power Consumption

S111 20W/C/S 390 W

S222 20W/C/S 560 W

S333 20W/C/S 740 W

S444 20W/C/S 920 W

S555 15W/C/S 850 W

S666 15W/C/S 950 W

S777 15W/C/S 1050 W

Notes :

The above power consumption values are under the 800 MHz band; for -48V DC

power input, adopt the power consumption of the latest power amplification module.

For the base stations of different frequency band and different configuration, the

power consumption is diversified.

5.3 Temperature and Humidity Requirement Table 4 Temperature Requirement

Items Requirement

Operating Temperature -5C to +55C

Operating Humidity 5%RH to 95%RH

5.4 Interface Indices

The interface indices are listed in Table 4.

Table 5 Interface Indices



Items Description Indices

Abis Interface E1/T1 8

Number of Ethernet interface

1 (optic or RJ45 port)

E1/T1 daisy chain levels 8

Baseband-radio Interface CVI number supported by single baseband

2

Number of optic port supported by single CVI

4

Interface protocol between BBU and RRU

CPRI

Medium for BBU and RRU interface

Optical port/high-speed cable interface

Maximum RSUs/RRUs supported by a single BBU

32

Length of single fabric link supported by RRU

< 80 km

Environment Monitoring Interface

Dry contact BBU supports 8 dry contacts: 8 inputs; or 6 inputs and 2 outputs;

RSU supports 4 dry contacts: 4 inputs.

Serial port 1 RS485/RS232

5.5 Capacity Indices

Maximum baseband capacity: 48 carrier-sectors，26.38 Erl per sector/carrier.

5.6 Environmental Classes

5.6.1 Grade Of Protection

IP20

5.6.2 Grounding Requirements

Joint grounding resistance 1; BTS grounding resistance 5 .

5.6.3 Noise Requirments

BTS working environmental noise: < 65 dBA.



5.7 Reliability Indices

Mean Time Between Failures (MTBF) >100,000 hours

Availability: > 99.999%

5.8 RF Indices

RF indices of ZXSDR BS8800 comply with 3GPP2 C.S0010-C, Recommended Minimum Performance Standards for cdma2000 Spread Spectrum Base Station and 3GPP2 C.S0032-A, Recommended Minimum Performance Standards for CDMA2000 High Rate Packet Data Access Network.

Transmitter indices (Band Class 0 (800MHz), Band Class 5 (450MHz))

Table 6 Transmitter indices (Band Class 0 (800MHz), Band Class 5 (450MHz))

Name Index

Operating band 800MHz (Band Class 0)

450MHz (Band Class 5)

TransMHzitter output frequency tolerance

±0.05 ppm

Occupied channel bandwidth

1.23 MHz (Band Class 0)

1.25 MHz (Band Class 5)

Output power at the Top of Cabinet (TOC)

40W/60W/80W/105W (800MHz)

60W (450MHz)

Total transmit power The total transmit power is within +2 dB and -4 dB of the manufacturer’s rated power.

Modulation mode Quadrature amplitude modulation

Conducted spurious emission and radiated spurious emission suppression

-45 dBc @750 kHz offset Center Freq

(RBW 30 kHz)

-60 dBc @1.98 MHz offset Center Freq (RBW

30 kHz)

> 4 MHz OFFSET:

-36 dBm (RBW 1 kHz) @ 9 kHz < f <150 kHz

< -36 dBm (RBW 10 kHz) @ 150 kHz < f < 30 MHz

<-30 dBm (RBW 1 MHz) @ 1 GHz < f < 12.5 GHz

4-6.4 MHz OFFSET:

< -36 dBm (RBW 1 kHz) @ 30 MHz < f < 1 GHz

6.4M TO 16M OFFSET:

< -36 dBm (RBW 10 kHz) @ 30 MHz < f < 1GHz

> 16 MHz OFFSET:

< -36 dBm (RBW 100 kHz) @ 30 MHz < f < 1 GHz

Transmitter intermodulation performance

If one BTS transmits at the rated power but another BTS’ output power is 30 dB less than the former’s rated power. When the powers of two BTSs are combined on the antenna port, the generated



Name Index

intermodulation spurious emission meets the conducted spurious emission requirement. The IF difference of the transmit signals of two BTSs is 1.25M.

Pilot time tolerance The PN time tolerance falls within 3 us and the inter-carrier tolerance falls within 1 us.

Time Tolerance/phase tolerance of pilot channel to other channels

Time difference: < 50 ns

Phase difference: < 0.05 rad

Waveform quality Rho is greater than 0.970 dBm with configuration of a single pilot.

Pilot code domain power With the standard 9CH configuration, the pilot code domain power is in the range of -7.0±0.5 dB.

Inactive channel code domain power

With the standard 9CH configuration, the inactive channel code domain power is less than -27 dB.

DO MAC inactive channel code domain power

With configuration of 13 FLUSs, the MAC inactive channel code domain power is less than -29.5 dB (type 2).

DO DATA channel code domain power

With configuration of 13 FLUSs at the rate of 614.44 kbs (test 1), the DATA channel code domain power is in the range of -15.5 dB to -14.5 dB.

Wave quality of DO channels

Pilot channel: Rho > 0.97

MAC channel: Rho > 0.912

DATA channel: Rho > 0.97

Standing wave ratio of the RFE

1.50

Transmitter indices (1.9GHz,2.1GHz and AWS)

Table 7 Transmitter indices (1.9GHz,2.1GHz and AWS)

Name Index

Operating band 1.9GHz (Band Class 1)

2.1GHz (Band Class 6)

AWS (Band Class 15)

Transmitter output frequency tolerance

±0.05 ppm

Occupied channel bandwidth

1.25 MHz

Output power at the Top of Cabinet (TOC)

60W

Total transmit power The total transmit power is within +2 dB and -2 dB of the manufacturer’s rated power.

Modulation mode Quadrature amplitude modulation



Name Index

Conducted spurious emission and radiated spurious emission suppression

-45dBc @885 kHz offset Center Freq (RBW

30kHz)

-55 dBc @1.98 MHz offset Center Freq (RBW

30kHz)

> 4 MHz OFFSET:

-36 dBm (RBW 1kHz) @ 9KHz < f <150 kHz

< -36 dBm (RBW 10kHz) @ 150 kHz < f < 30 MHz

< -36 dBm (RBW 100kHz) @ 30 MHz <f < 1 GHz

4-16 MHz OFFSET:

< -30 dBm (RBW 30kHz) @ 1 GHz < f < 12.5 GHz

16M-19.2M OFFSET:

<-30dBm(RBW 300kHz) @ 1GHz<f< 12.5GHz

>19.2MHz OFFSET:

<-30dBm(RBW 1MHz) @ 1GHz<f< 12.5GHz

Transmitter intermodulation performance

If one BTS transmits at the rated power but another BTS’ output power is 30 dB less than the former’s rated power. When the powers of two BTSs are combined on the antenna port, the generated intermodulation spurious emission meets the conducted spurious emission requirement. The IF difference of the transmit signals of two BTSs is 1.25M.

Pilot time tolerance The PN time tolerance falls within 3 us and the inter-carrier tolerance falls within 1 us.

Time Tolerance/phase tolerance of pilot channel to other channels

Time difference: < 50 ns

Phase difference: < 0.05 rad

Waveform quality Rho is greater than 0.990 dBm with configuration of a single pilot.

Pilot code domain power With the standard 9CH configuration, the pilot code domain power is in the range of -7.0±0.5 dB.

Inactive channel code domain power

With the standard 9CH configuration, the inactive channel code domain power is less than -27 dB.

DO MAC inactive channel code domain power

With configuration of 13 FLUSs, the MAC inactive channel code domain power is less than -29.5 dB (type 2).

DO DATA channel code domain power

With configuration of 13 FLUSs at the rate of 614.44 kbs (test 1), the DATA channel code domain power is in the range of -15.5 dB to -14.5 dB.

Wave quality of DO channels

Pilot channel: Rho > 0.97

MAC channel: Rho > 0.912

DATA channel: Rho > 0.97


1.50



Receiver indices (Band Class 0 (800MHz), Band Class 5 (450MHz))

Table 8 Receiver indices (Band Class 0 (800MHz), Band Class 5 (450MHz))

Name Index

Operating band 800MHz (Band Class 0)

450MHz (Band Class 5)

Receiver sensitivity < -130 dBm

Receiver dynamic range When the lower limit is the receiver sensitivity and the upper limit (noise level) equals -65dBm/1.23MHz (Eb/N0 = 10dB1dB), the Frame Error Rate (FER) is

lower than 1%.

Noise figure < 3

Single tone desensitization In the presence of a single tone that is 50 dB above the CDMA signal level, and is at offset of 750 kHz

from the center frequency, the output power of the MS increases by no more than 3 dB ,and the FER is less than 1.5%.

In the presence of a single tone that is 87 dB above the CDMA signal level, and is at offset of 900 kHz

from the center frequency, the output power of the MS increases by no more than 3 dB, and the FER is less than 1.5%.

Intermodulation spurious response attenuation

BAND 0:

In the presence of two interfering tones that are 72 dB above the CDMA signal level, and are at offsets of +900 kHz and +1.7 MHz, and -900 kHz and -1.7 MHz from the center frequency, the output power of the MS increases by no more than 3 dB, and the FER is less than 1.5%.

Conducted spurious emissions and radiated spurious emissions

< -80 dBm, measured within the BTS receive band

< -60 dBm, measured within the base station transmit band


1.50

Receiver indices (1.9GHz,2.1GHz and AWS)

Table 9 Receiver indices (1.9GHz,2.1GHz and AWS)

Name Index

Operating band 1.9GHz (Band Class 1)

2.1GHz (Band Class 6)

AWS (Band Class 15)

Receiver sensitivity < -130 dBm

Receiver dynamic range When the lower limit is the receiver sensitivity and the upper limit (noise level) equals -65dBm/1.23MHz (Eb/N0 = 10dB1dB), the Frame Error Rate (FER) is

lower than 1%.

Noise figure < 3

Adjacent Channel Band Class 6:>-53dBm(±2.5M)



Name Index

Selectivity

Single tone desensitization In the presence of a single tone that is 50 dB above the CDMA signal level, and is at offset of 750 kHz

from the center frequency, the output power of the MS increases by no more than 3 dB ,and the FER is less than 1.5%.

In the presence of a single tone that is 87 dB above the CDMA signal level, and is at offset of 900 kHz

from the center frequency, the output power of the MS increases by no more than 3 dB, and the FER is less than 1.5%.

Intermodulation spurious response attenuation

In the presence of two interfering tones that are 70dB above the CDMA signal level, and are at offsets of +1.25M Hz and +2.05M Hz, and -1.25 MHz and -2.05 MHz from the center frequency of the edge carrier, the output power of the mobile station shall increase by no more than 3 dB, and the FER shall be less than 1.5%.

Conducted spurious emissions and radiated spurious emissions

< -80 dBm, measured within the BTS receive band

< -60 dBm, measured within the base station transmit band


1.50

5.9 BTS Clock Indices BTS Clock Indices:

Frequency reference: 10 MHz. Its accuracy should be smaller than 10-10

in the locked GPS status or the hold status.

Temperature: < ±0.5*10-9

Clock synchronous source

Once the synchronous source is lost for a while or the BTS clock is lost in synchronization, dual-ovenized crystal is adopted to ensure the stability of clock for a short period, and it guarantees that phase wander is less than 10µs within 24 hours through the HOLDOVER algorithm. Therefore the BTS can run normally.

Clock System Performance

Frequency tolerance < 0.05 ppm

Phase tolerance < 10 us



6 Networking Mode and Application

6.1 Networking Mode

6.1.1 Abis Interface Networking Mode

ZTE’s BSC and ZXSDR BS8800 are connected through Abis interface, physically which can be E1/T1 or Ethernet. Abis interface networking mode is shown in Figure 5.

IP

BSCBSC

BS880

0

....

BS880

0

BS880

0BS880

0

BS880

0....

Abis

E1/T1

Abis Star

Abis Chain

BS880

0....

IP

BS880

0

Ethernet based

Abis

Figure 5 Abis Interface Networking Mode

BSC is connected with ZXSDR BS8800 by E1/T1, and the networking mode can be

star or chain.

Star networking mode: each BTS is connected to BSC point to point, that is, directly (by E1/T1) or indirectly (by external transmission equipment). It is simple and reliable.

Chain networking mode: several BTSs are connected in one chain and the last BTS is connected to BSC. It is suitable for zonary area.

The combination of star and chain modes can be adopted.

BSC is connected with ZXSDR BS8800 through GE port, which provides many

flexible networking modes for customers:

BSC is connected with BTS through Ethernet cable.

BSC is connected with BTS through Hub or Switch.

BSC is connected with several BTSs through router.

BSC is connected with one BTS through router.



6.1.2 Baseband-RF Networking Mode

BBU and RSU/RRU adopt optic interface and support CPRI protocol.

BBU

……

……

……

……

……

……

chain

star

Figure 6 Baseband-Fiber Remote Interface Networking

As shown in the Figure 6, BBU and RRU support star and chain networking mode, or combination of the above two modes.

Star networking mode: the fiber number from baseband equals to the total number

of radio stations. The number of fiber is high, but the reliability of this mode also is

high.

Chain networking mode: the number of fiber is low, but the reliability of this mode

also is low.

6.2 Applications

The ZXSDR BS8800 features flexible installation and wide applications due to large capacity and small size.

Suitable for indoor mid and high capacity, wide coverage and multi-band

applications

It is the smallest outdoor 48CS BTS in the industry with the footprint of 0.27 m2.

The RSU supports a larger number of carriers and has a higher expansion capability. It supports at most eight carriers, which is the largest number in the industry.

The BS8800 supports multi-band.

Installation against the Wall



6.3 Multi-Band Application

All BS8800 RF links are independent from each other. Each RSU can operate in a different band to share the baseband resource. The BS8800 supports sharing of up to S888 + S888 baseband resources.

Sharing of antenna feeder

BBU

RSU

RSU

RSU

RSU

RSU

RSU

For Band B

For Band A

For Common

Figure 7 Dual-band BS8800

The BS8800 supports at most six bands, as shown in Figure 8.

BBU

R

S

U

R

S

U

R

S

U

R

S

U

R

S

U

R

S

U

For Band F

For Band E

For Common

For Band D

For Band C

For Band B

For Band ASec 1 Sec 2 Sec 5Sec 3 Sec 6Sec 4

Figure 8 Multi-band BS8800

Through external RRUs and cascading of RRUs, the BS8800 can support more bands. The number of bands supported by the system is only limited by the baseband resource.



7 Appendix A: Standards Complied ANSI J-STD-008, Personal Station-Base Station Compatibility Requirement for 1.8

to 2.0 GHz Code Division Multiple Access (CDMA) Personal Communications

System, 1996.

3GPP2 C.S0001-A version 5.0: Introduction to CDMA2000 Standards for Spread

Spectrum Systems - Release A.

3GPP2 C.S0002-A version 6.0 (TIA/EIA IS-2000.2-A-2): Physical Layer Standard

for CDMA2000 Spread Spectrum Systems - Release A.

3GPP2 C.S0003-A version 6.0 (TIA/EIA IS-2000.3-A-2): Medium Access Control

(MAC) Standard for CDMA2000 Spread Spectrum Systems - Release A, Addendum

2.

3GPP2 C.S0004-A version 6.0 (TIA/EIA IS-2000.4-A-2): Signaling Link Access

Control (LAC) Specification for CDMA2000 Spread Spectrum Systems - Release A.

3GPP2 C.S0005-A version 6.0 (TIA/EIA IS-2000.5-A-2): Upper Layer (Layer 3)

Signaling Standard for CDMA2000 Spread Spectrum Systems - Release A,

Addendum 2.

TIA/EIA/TSB-58, Administration Parameter Value Assignments for TIA/EIA

Wideband Spread Spectrum Standards, 1995.

TIA/EIA/TSB-74, Support for 14.4 Kbps Data Rate and PCS Interaction for

Wideband Spread Spectrum Cellular System, 1995.

TIA/EIA/IS-95-A, Mobile Station-Base Station Compatibility Standard for Dual-Mode

Wideband Spread Spectrum Cellular Systems.

TIA/EIA/IS-95, Mobile Station-Base Station Compatibility Standard for Dual-Mode

Wideband Spread Spectrum Cellular Systems.

TIA/EIA/IS-637, Short Message Services for Wideband Spread Spectrum Cellular

Systems, 1997.

TIA/EIA/IS-127, Enhanced Variable Rate Codec Speech Service Option 3 for

Wideband Spread Spectrum Digital Systems, 1996.

TIA/EIA/IS-658, Data Service Interworking Function Interface for Wideband Spread

Spectrum Systems.

CDG RF36, Markov Service Option for Wideband Spread Spectrum

Communications Systems.

TIA/EIA/IS-725, Over-the-Air Service Provisioning of Mobile Stations in Wideband

Spread Spectrum Systems, 1997.

TIA/EIA/IS-728, Inter-System Link Protocol.

TIA/EIA/IS-733, High Rate Speech Service Option 17 for Wideband Spread

Spectrum Communication Systems.

TIA/EIA/IS-707, Data Service Options for Wideband Spread Spectrum Systems,

1998.



TIA/EIA/IS-707-A-2 Data Service Options for Spread Spectrum Systems Addendum

2, 2000.

3GPP2 C.S0024-A (TIA/EIA IS-856-A): CDMA2000 High Rate Packet Data Air

Interface Specification, August 2005.

3GPP2 C.S0024 (TIA/EIA IS-856): CDMA2000 High Rate Packet Data Air Interface

Specification, October 2002.

3GPP2 C.S0024-B (TIA/EIA IS-856-B): cdma2000 High Rate Packet Data Air

Interface Specification

3GPP2 A.S0008 (TIA/EIA IS-878), IOS Specification for High Rate Packet Data

(HRPD) Radio Access Network Interfaces.

3GPP2 A.S0008-A. Interoperability Specification (IOS) for High Rate Packet Data

(HRPD) Radio Access Network Interfaces With Session Control in the Access

Network

3GPP2 C.S0063-0, cdma2000 High Rate Packet Data Supplemental Services.

3GPP2 C.S0063-A, cdma2000 High Rate Packet Data Supplemental Services.



8 Appendix B: Abbreviations Table 10 Abbreviations

ARIR Adaptive Reverse Interference Resistance

BBU Base Band Unit

BSC Base Station Controller

CAPEX Capital Expenditure

CC Control and Clock module

CDMA Code Division Multiple Access

CES Channel Element Subsystem

CH Channel Handling module

CPRI Common Public Radio Interface

CVI Channel Processing Voice Interface Module

DBS Database Subsystem

DFL uplex Filter & LNA

FA Fan Array module

GE Gigabit Ethernet

GPS Global Position System

MS/AT Mobile Station/Access Terminal

MTBF Mean Time Between Failures

OMC Operation and Maintenance Center

OPEX Operation Expenditure

OSS Operating System Subsystem

PA Power Amplifier

PDM Power Distribute Module

PM Power Module

RPDC RRU DC Power

RRU Remote RF Unit

RSU RF System Unit

RTR Transceiver and Receiver

RTR RRU Transceiver and Receiver

SA Site Alarm module

SDR Software Defined Radio

SPS Service Processing Subsystem

uTCA micro-Telecom Computing Architecture

Zxsdr bs8800 product description

Technology

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