GB_SS43_E1_1 ZXSDR BTS Structure and Principle 67

8/11/2019 GB_SS43_E1_1 ZXSDR BTS Structure and Principle 67

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ZXSDR BTS Structure and Principle


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Agenda

ZXSDR BTS Fam ily Introduc t ion

ZXSDR BS8700

ZXSDR BS8800

ZXSDR BS8900 ZXSDR BS8906

ZXSDR BTS Work Principle

ZXSDR BTS Operation and Maintenance


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Evolution of Multi-Mode BTS

ZTE macro-BTS, IP

architecture, 18TRX cabinet

Traditional macro-BTS, ATM

architecture, 12TRX cabinet

Different BTS systems

overlapped

TDM/ATM platform

Narrowband architecture

Low integration and high

consumption

G1 Multimode

BTS

Different BTS SystemsInterchanged

3G BBU/RRU Interchangeable

IP/ATM architecture

Increasing integration

G2 Multimode

BTS

Shared broadband multi-carrier module

Shared uTCA BBU

Full-IP architecture and unified platform

Multi-system conversion for same frequency

softwareUltra-high integration and low consumption

G3 Multimode

BTS - SDR

Unified Radio Resource

Management

System conversion for

adjacent frequency software

Integrated BSC function

MESH network Architecture

G4 Multimode

BTS - Flat SDR

ZTE SDR, 36TRX cabinet


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ZTE SDR Base Station Platform

Multiple mode, multiple frequency

band, unified hardware platform

Base band processing unit based

onTCA structure

SDR helps you to achieve:

Optimizedfrequency resource utilization Optimized networkresource

Smooth innovation of wirelessnetwork Best networking solution forTCO

Separate baseband and radio

Radio unit based on MCPA

CDMA2000

GSM TD-SCDMA

WiMAX

WCDMA


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ATCA/mTCA

ATCA (Advanced Telecommunication Computer Architecture):

adopted by PICMG in 2003

Micro TCA (u TCA): ATCA, be fit for accessing network


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Broadband MCPA

Single-Carrier PA Multi-Carrier PA

Combiner & Antenna

Interface

Digital IF Process

BBU

PA1

TRX1

PA2

TRX2

PA3

TRX3

PA4

TRX4

f1 f2 f3 f4

Duplex & Antenna

MCPA

MTRX

Interface

BBU

Digital IF Process

f1~f6)

f1~f6)

SDR design is based on MCPA at the same frequency;

MCPA provides flexible frequency optimization technology and better equipment integrity.


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BS8700

BS8900

BS8800

Distributed BTS BS8700, flexiblenetworking, 0 space requirement and

rapid deployment , can be used for both

indoor and outdoor coverage

B8200

R8860

RSU40/RSU60

+

+ =

Indoor Marco BTS BS8800, can be

installed in equipment room for indoor

coverage

RSU40/RSU60

+ =

Outdoor Marco BTS BS8900, can be

installed in cabinet for outdoor

coverage, it can adapt to various

environment

=

B8200

B8200

Micro BTS BS8906, provide Low-cost

integrated solution for single-sectorcell.

BS8906

+ =B8200

RSU40/RSU60

R8840

SDR Base Station Family


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RRUBBU

Indoor Macro

Outdoor

Macro

MCPA-basedbroadband Radio

Unit with multi-mode supported.

Sufficient output power of HPA

with lower power consumption.

MicroTCA structureBase Band

Unit with high reliability and

easy expansion.

High integrity & processing

capability; upgrade to HSPA+ via

software; minimum upgrade cost

to support LTE.

ZTE SDR 4 Key Features

ZTE GSM/UMTS Dual-Mode SDR Family


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Agenda

ZXSDR BTS Family Introduction

ZXSDR BS8700


ZXSDR BS8906




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Hardware Architecture of BS8700

B8200

+R8840

R8860

BS8700

Fiber

BBU

Radio UnitRadio Unit

SA/

SE

CC

BB

(uBPG)

FS R8860

E1(75

/120)

/ T1

GE/FE

Clock

Data

Control Signaling

Antenna

RRU

CPRI

The structure of BS8700 can express in the form of

BBU+RRU, with Base band and RF modules separated.


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B8200 accomplishes the following basic functions

with RRU in Um/Uu, Abis/Iub and O&M interfaces. RRU and B8200 accomplishes 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. With Abis/Iub interface, RRU and B8200 connects with BSC/RNC and

accomplishes the following functions including cell management,

reporting BTS measurement information, broadcasting system

Information, implementing access control from BSC/RNC, mobility

management, radio resource management and controlling, FP

processing and transmission management.

With operating and maintenance interface, B8200 provides system

management functions including configuration management, alarm

management, status checking and system monitoring

ZXSDR B8200 Introduction


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Based on Unified MicroTCA Platform

Base Band Unit - ZXSDR B8200

Volume:

88.4482.6197mmHWD

Weight: 8.75kg (full configuration)

Typical Power Consumption :

GSM 60W/12TRX

WCDMA 80W / 6CS

Power Supply: -48V DC

Temperature Range: -2055

Humidity Range: 5%95%

2U

482.6mm

88.4mm

GSM Processing Capability:

60TRX (12TRX *5uBPGs )

24 Cell / BBU

UMTS Processing Capability:

960CE/BBU(192CE/BPC*5)

Throughput UL 75Mbps(15Mbps*5)

Throughput DL 216Mbps(43.2Mbps*5)

30CS/BBU

Abis/Iub Interface:

16*E1/T1

1*FE/GE Electric/Optical(8 VLAN)

To RRU: 12*1.25Gbps CPRI optical interface

Performance Index

Physical IndexInterface Index

19 inch


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PM Board Introduction

Power Module

16 internal interface for +12V load power

16 internal interface for +3.3V management power

Measurement and protection of input over-voltage/under-voltage;

Output over-current protection and load power management

Power Module


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Board LED Color Meaning Description

PM

RUN GreenRunning

Indicator

Always on: The board is in reset state.Flashing at 1Hz: The board is normally running.

Off: Self test fails.

Alarm Red Alarm IndicatorOn: The board has an alarm.

Off: The board has no alarm.

HS BluePlugging/Unplug

ging Indicator

On: The board can be unplugged.

Flashing: The board is being activated or

deactivated.

Off: The board cannot be unplugged.

PM Indicators


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SA/SE Board Introduction

Site Alarm Board

Site Alarm Board/Site Alarm Extender Board(optional)

Alarm monitor and rev control of no more than 9 fans;

Signal monitor and interface lightning protection for the rack;

Providing 6 input dry contact interfaces, 2 input /output dry contact interface;

Providing 8 lines of E1/T1 interface


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SA/SE

RUN GreenRunning

Indicator

Always on: The board is in reset state.

Flashing at 1Hz: The board is normally running.





ging Indicator



deactivated.


SA/SE Indicators


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SA JumpersJumperX5 is used to set E1/T1 transmission mode.

TWO LSB POSITIONS OF X5

TWO MSB POSITIONS OF X5


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CC Board Introduction

GPS system clock & RF reference clock;

Abis Iub interface function;

Ethernet switch function, providing switch plan for signaling and media stream;

Rack management

Control & Clock Board


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CC

HS BluePlugging/Unpluggin

g Indicator


Flashing: The board is being activated or deactivated.


RUN Green Running Indicator




Alarm Red Alarm Indicator On: The board has an alarm.Off: The board has no alarm.

E0S Green E1/T1 statusindicator (link 03)

Alternate flash for different links; the max 4 flashes per

second; flashing at frequency of 5 Hz.

The first second: one flash means Link 0 is normal and

OFF means Link 0 is not in use.

The third second: two flashes means Link 1 is normal and

OFF means Link 1 is not in use.The fifth second: three flashes means Link 2 is normal

and OFF means Link 2 is not in use.

The seventh second: four flashes means Link 3 is normal.

and OFF means Link 3 is not in use.

Recycle. Each cycle lasts for eight seconds.

CC Indicators


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CC

E1S Green E1/T1 statusindicator (link 47)

The same as E0S.

E2S GreenE1/T1 status

indicator (link 811)The same as E0S.

E3S Green

E1/T1 status

indicator (link 12

15)

The same as E0S.

MS Green Active/Standbystatus indicator

On: The board is in active statusOff: The board is in standby status

REF Green

GPS antenna state

or 2 MHz state,

connection state ofSMA Interface on

corresponding

panel GPS

Always on: The antenna feeder is normal.

Always off: The antenna feeder and satellite are normal,

in initialization state.

Slow Flash (flashing at 1 Hz)): The antenna feeder is

broken.

Fast Flash (flashing at 2 Hz): The antenna feeder is

normal but cannot receive satellite signal.

Slowest Flash (flashing at 0.5 Hz): Antenna short circuit

Quickest Flash (flashing at 5 Hz): No message is

received at the initialization stage.

CC Indicators


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ETH0 GreenAbis/Iub interface

link state

On: Physical link of Abis/iub network interface

(optical or electrical) is normal.

Off: Physical link of Abis/Iub network interface is

broken.

ETH1 Green

Link state of

ETH1 networkinterface

On: Physical link of network interface is normal.

Off: Physical link of network interface is broken.

CC Indicators


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FS Board Introduction

Fabric Switch Board

Fabric Switch Module

Baseband IQ data exchange;

Providing interface between RRU and BBU


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FS

RUN GreenRunning

Indicator







ging Indicator



deactivated.


FS Indicators


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UPBG

RUN GreenRunning

Indicator







ging Indicator



deactivated.


UPBG Indicators


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Cable Connection of B8200


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ZXSDR R8860 Introduction

Support the configuration of 5MHz/4.8MHz/4.6MHz channel interval;

Multi-carrier support: GSM up to 6 carriers, UMTS up to 4 carriers, GSM/UMTSdual mode configuration;

Multi-band support: 900M/1800MMHz

Co-cabinet can support 4-antenna-receiving in 1 sector;

Co-cabinet can support transmit diversity, without adding antenna achieving same

receiving sensitivity;

Co-cabinet can support non-continuous frequency configuration;

Support RTWP report interval at 100ms and 2ms;

Support transmit power reporting function for every carrier;

Support over loading protection function for power amplifier;

Support measurement, compensation and adjustment function for channel delay;

Support transmit channel switching on/off function;

R8860 software fault for itself will not affect the running of BBU and other R8860

which connected to it.


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Remote Radio Unit - ZXSDR R8860

SDR R8860

Carrier Configuration:

Support GSM 1-6TRX or UMTS 1~4 CS

Output Power60W /80W

Receive Sensitivity:

GSM -113dBm@sigle antenna

UMTS

-126.5dBm@sigle antenna

-129.2dBm@dual antenna

Frequency:

900MHz, 1800MHz, 850MHz, 1900MHz

Performance Index

2*1.25G CPRI Optical interface

Interface Index

Volume(R8860): 500320172mmHWD

Weight: 22.5Kg

Typical Power Consumption:200W (6TRX)(900M)

Power Supply: -48V DC

Temperature Range:-40+55

Protection Class:IP65

Physical Index

500mm

35 power-efficient for GSM

40% power-efficientfor UMTS.

Support GSM and UMTS.


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Remote Radio Unit Interface

No Label Interface

1 LC1BBU and RPU Interfaces / RRU

concatenation interface

2 LC2BBU and RPU Interfaces / RRU

concatenation interface

3 AISG AISG device interface

4 Mon External device interface

5 DC IN Power interface

6 RXInterface to receive diversity RF

cable

7 RX/TXInterface to transmit / receive main

diversity RF cable

8 RXout Frequency expansion interface

9 RXin Frequency expansion interface

10 GND Machine Grounding


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RRU

RUN Green Running Indicator

Always on: The board is in resetting or starting status.


Flashing at 5Hz: The board is downloading version.


Alarm Red Alarm Indicator

Flash in 5Hz: critical or severe alarm

Flash in 1Hz:normal or minor alarm


Link GreenOptical link

indicator

On: normal fiber connection

Off: disconnected fiber

Flash in 5Hz: consider this link as clock reference source,

and phase-locked loop in fast capture status

Flash in 0.25Hz: consider this link as clock reference

source, and phase-locked loop in trace status

RF OrangeRF working status

indicator

Off: without RF out put

On: with RF out put

RRU Indicators


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Agenda

ZXSDR BTS Family Introduction ZXSDR BS8700

ZXSDR BS8800





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ZXSDR BS8800 Introduction

ZXSDR BS8800 (hereafter BS8800) is one of multi-carrier, multi-mode indoor

macro base station in ZXSDR BTS series. BS8800 accomplishes 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.

BS8800 connects with BSC/RNC and accomplishes the following functions

including cell management, reporting BTS measurement information, broadcastingsystem Information, implementing access control from BSC/RNC, mobility

management, radio resource management and controlling, FP processing and

ATM transmission management.

With operating and maintenance interface, BS8800 provides system management

functions including configuration management, alarm management, status

checking and system monitoring.

BS8800 adopts standard 19 inches rack structure. The volume is main cabinet

dimension: 950mm * 600mm * 450mm (H*W*D), auxiliary cabinet dimension:

700mm * 600mm * 450mm (H*W*D).


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Integrated Indoor Macro Site - ZXSDR BS8800

Radio Unit

Baseband

Unit

Radio Unit:

RSU40/RSU60

Physical Index

Volume: 950600450mmHWD

(Main Cabinet)

Weight: 135kg (Main Cabinet)

Typical Power Consumption S666:735W(RSU60)

Power Supply: -48V DC (-40~-57V DC)

Performance Index

GSMProcessing Capability:

GSM: 60 TRX (12TRX * 5 BP boards

24 Cell / BBU


Uplink and Downlink: 960CE

UMTS: 30CS (6CS * 5 BPC boards)


GSM -113dBm@single antenna

UMTS-126.5dBm@sigle antenna

UMTS-129.2dBm@dual antenna

Interface IndexIub Interface:

8*E1/T1(Can expand to 16)

1*GE/FE Optical or 1*GE/FE Electrical

To RRU: 12 *1.25Gbps CPRI Optical Interface

SDR BS8800

B8200


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Radio Unit of BS8800- RSU40/RSU60

RSU40/RSU60 is an radio unit of BS8800 based on MCPA

technology. It consists of MCPA (multi-carrier power module)

module, transceiver module, and duplex filter LNA, and

connects antenna via TX/RX, RX port.

Compact and light

Feeder Interface

CPRI optical to

BBU, or connect

via SFP high-

speed cable

RX expand

interfaceNumbe

rInterface Interface Description

1 Power Power supply interface

2 AISG AISG device interface

3 Mon External device interface45 TestDBG Debug, test interface

6 TX RXInterface between BBU and

RRU or RRU cascade

7 RXoutRXin Frequency expand interface

8 ANT

Main and diversity antenna

interface


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38

Radio Unit:

RSU40,RSU60

Wiring Duct:

Used to walk wiring in rack, such as

fiber or SFP cable between BBU

and RSU.

Power Distribution Module:

Passive power distribution unit

Transmission Device: 1U slot, it can provide built-in

transmission or microwave devices

to save operators investment.

Base Band Unit:

2*B8200 can be placed in

maximum FAN

Used to perform heat dissipation for

RSU modules, 6 fans in total

BS8800 Hardware Structure

950mm

600mm

450 mm

Radio Unit

Power

Distribution Module

Wiring

Duct

Transmission

DeviceVentilation

Base Band

Fan


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Easy to stack and expand, lower upgrade cost for customers

BS8800 - Easy to Stack, Easy to expand

1650mm

450 mm

600mm

Power Distribution

Module

Cable Chute

Base Band Unit

950mmPower Distribution

Module

Cable Chute

Radio Unit

Auxiliary Cabinet Fan

Radio Unit

Ventilation

Main Cabinet

950mm

600mm

450 mm

600mm

450 mm

700mm

Ventilation


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Agenda


ZXSDR BS8800





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ZXSDR BS8900 (hereafter BS8900) is one of multi-carrier, multi-mode outdoor

macro base station in ZXSDR BTS series.

BS8900 accomplishes UE access and radio link transmission including RF





including cell management, reporting BTS measurement information, broadcasting

system Information, implementing access control from BSC/RNC, mobility






BS8900 adopts standard 19 inches rack structure, is composed of outdoor RF

cabinets RC8910, RC8911, RC8931, site support cabinet BC8910, and battery

cabinet PC8910.

Integrated Outdoor Macro Site ZXSDR


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Integrated Outdoor Macro Site - ZXSDR

BS8900

Radio Unit:

RSU40/RSU60

Physical Index

Volume: 1900600600mmHWD

(Standard Configuration)

Weight: 220kg ( with 3RSU)

Typical Power Consumption:S666:725W(RSU60)

Power Supply: -48V DC(-40VDC ~ -57VDC)

Interface IndexIub interface:


1*GE Optical or 1*GE/FE Electrical

To RRU: 12 *1.25Gbps CPRI Optical interface

SDR BS8900Base Band Unit:

B8200Performance Index

GSM Processing Capability:

GSM: 60 TRX (12TRX * 5 BP boards)

24 Cell / BBU


Uplink and Downlink: 960CE

UMTS: 30CS (6CS * 5 BPC boards)


GSM -113dBm@single antenna


UMTS-129.2dBm@dual antenna


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Cabinet Appearance

supporting cabinet + battery cabinet and radio cabinet

Outdoor Radio Cabinets

RC8910Radio Cabinet

BC8910

Supporting

cabinetPC8910

Battery Cabinet

Power & Battery Cabinets

RC8931

Radio Cabinet

RC8911

Radio Cabinet


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BC8910 Structure

Heat Exchange 4U

Reserve Max. 6U

BBU 2U

AC Power 6U

Heat Exchange 4U

Reserve 6U/7U

BBU 2U

PDM 3U

Lighting box 1U/2U

Wiring Duct1U

AC Supply DC Supply


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RC8911&RC8910 Structure

RU

Fan subrack

PDM

Storage battery

Base

Fan subrack

PDM

Breaker

and surge arrester

RU

Base

RC8911 RC8910

RC8931&PC8910 S


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RC8931&PC8910 Structure

RU

Fan subrack

Storage battery

Base

PDM

Base

Storage battery

RC8931

PC8910


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AC Configuration:BC8910+RC8911+RC8931

Fan subrack

BC8910

RC8911

RC8931

Site support cabinet BC8910: used to

accommodate power system, baseband pool unit,

heat exchanger, and transmission device.

Outdoor RF cabinet RC8911: used to accommodate RF unit and battery.

Outdoor RF cabinet RC8931:

used to accommodate RF unitand battery.

Heat

Exchanger

BBU

B121

Fan

subrack

PDM

RU

Storage

battery

PDM

RU

Storage

battery

6U reserved

space

AC


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RC8910

AC

Configuration:BC8910+RC8910+RC8911+PC8910

PC8910

BC8910

Heat

Exchanger

BBU

B121

Fan

subrack

PDM

RU

Storage

battery

Fan

subrack

PDM

RU

6U reserved space

RC8911

Outdoor RF cabinet RC8910:

used to accommodate RF unit.

Outdoor RF cabinet PC8910:

used to accommodate battery.

Storage

battery


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AC Configuration:BC8910+PC8910+RRU

PC8910

BC8910

R8860

Heat

Exchanger

6U reserved space

BBU

B121

Storage

battery


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BC8910

RC8910

DC Standard Configuration:BC8910+nRC8910

BBU

Heat

Exchanger

RU

PDM

Fan

subrack

n=1~3


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52

Multi-form, Minimal Requirement for Site Condition

2

3

4

1

Place cabinets side by side

RRU Remote Application

Compact Configuration

High Integration

Built-in transmission,

battery, power supply

Maximal 8-hours

power supply in full

configuration

Same size, volume and space for

all cabinets

Suitable for these scenarios such as

ground-bearer or limited height

No Power cabinet Compact

Power and battery are optional

based on different conditions.

RRU makes RF as close to

antenna as possible, minimizing

feeder loss.


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Agenda


ZXSDR BS8800





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ZXSDR BS8906 (hereafter BS8906) is one of multi-carrier, multi-mode outdoor

micro base station in ZXSDR BTS series.

BS8906 accomplishes UE access and radio link transmission including RF





including cell management, reporting BTS measurement information, broadcasting

system Information, implementing access control from BSC/RNC, mobility






The BS8906 consists of BBU, RSU, FCE, PSU, APM\DPM, LPU\SDH\microwave

IDU and so on.

I t t d Mi Sit ZXSDR BS8906


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Integrated Micro Site - ZXSDR BS8906

Radio Unit:

RSU40/RSU60

Physical IndexVolume: 600 320 480 mmHWD

Weight: 52kg

Typical Power Consumption S4: 300W (RSU60)

Power Supply: -48V DC (-40~-57V DC)

Performance Index

Processing Capability:

GSM: 6TRX,UMTS 4CS

Base Band Processing Capability:

Same as B8200


GSM -113 dBm@sigle antenna


Frequency

900MHz, 1800MHz, 850MHz, 1900MHz

Interface IndexIub Interface:


1*GE/FE Optical or 1*GE/FE Electrical

To RRU: 12 *1.25Gbps CPRI Optical Interface

SDR BS8906

B8200

BS8906 can be connected with RRU

for outdoor BBU solution.


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Agenda


ZXSDR BS8800


ZXSDR BTS Work Princip le



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Hardware Architecture

BBU performs Abis/Iub interface functions, signaling processing,baseband

processing, remote and local O&M functions, working status monitoring, andalarm functions.

RRU performs terminal access and RF link transmission function through

Um/Uu interface.GPS antenna

SAE1/T1

BSC/RNC

IQ

switching

IQGE

RRU

FAM

PM

Abis/Iub

Clock

GE/FE

GE

UBPG/ BPC

FS GE

switching

CC

Fiber

BBU


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Software Architecture

OSS

G SM Function

UMTS Function

NOP

OMC-B

SCS OAM DBS BRACSBRS

VOS

Sche. Timer Moni. CPP Excep Mem BBX File DBG

Windows

Hardware (BSP)

VxWorks

LMT


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The operating support layer provides the functions of OSS, OAM, DBS, BRS, BRACS, and

SCS to serve to different BTS mode. OAM (Operating and Maintenance) is to provide the configuration, alarm and

performance measurement function.

DBS (Data Base Sub-system) is the database system.

BRS (Barrier Sub-system) is for protocol stack processing.

BRACS (Barrier Access Control Sub-system) is to control the access to bear layer.

SCS (System Control Sub-system) is to control the power supplying andactive/standby switching.

OSS (Operation Support Sub-system) is the support layer in this entire framework, which is

a hardware irrespective platform for running software and provides basic functions like

scheduling, timer, memory management, communication, sequencing control, monitoring,

alarming and logging. Detects the external and internal environment temperature in real

time.

BSP (Board Support Package) supports the information routing to the GSM and public

parts in the application layer.

VxWorks is the operation platform communication to the hardware components.

Software Architecture


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Agenda


ZXSDR BS8800



ZXSDR BTS Operat ion and Maintenance


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Maintenance Functions

FaultManagement

NE (RAN)

3rd Party

NMS/OSS/BSS

CORBA SNMP FILE ASCII DB

PerformanceManagement ConfigurationManagement

Log

Management

Security

Management

Northbound

Interface

Version

Management

System

Management

Topology

Management

FM

NE (CN)

Southbound

Interface

PM CM IM SM

NE

EMS

NMS/OSS/

BSS

NetNumenTMM31

FM FM/PM/CM/IMFM/PM/CM/IM FM FM/PM/CM/IM

FM PM CM IM SM


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The BSS provides a transparent channel to implement operation and maintenance

information interaction between NetNumen M31 and the BTS. Management of the BSC and

the BTS adopts unified client interface for unified security management and operation log.

And it has a unified service management interface. NetNumen M31 also supports

CORBA/SNMP Itf-N interface to be integrated with third-part NMS.

Maintenance Functions

Version Management

With this function, users can check the versions of the software and hardware running at

the foreground. The background provides a software downloading system for software

upgrade at the foreground. Before downloading, warehousing processing is required, that is,

copying the version file to the server and registering to the server.

Fault Management

With this function, users can check the versions of the software and hardware running at

the foreground. The background provides a software downloading system for software

upgrade at the foreground. Before downloading, warehousing processing is required, that is,

copying the version file to the server and registering to the server.


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Maintenance FunctionsConfiguration Management

Configuration management implements equipment configuration and radio configuration.

Log Management

Any operation performed by an operator is recorded automatically by the system. Thus, the

operation maintenance personnel can query historical operation records in some special

cases (such as abnormal system operations).

Security Management

Security management is implemented through user management and user group

management. The user element includes the user name and password, as well as which

user groups the user belongs to. The user group element includes the user group name

and authority information.

Performance Management

Performance management is to measure, report and make statistics of the System

performances.


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Documents

GB_SS43_E1_1 ZXSDR BTS Structure and Principle 67