ZXC10 BTSB System Overview

CBB_H03_E2

ZTE University

CDMA BSS Course Group

Outline

ZXC10-BTSB Solution

ZXC10-BTSB AE

ZXC10-BTSB I1

ZXC10-BTSB I2

ZXC10-CBTS I1,I2,O1

ZXC10-MBTS

ZTE BSSB BTS Solutions

ZTE BTS consists of three subsystems− Baseband Digital Subsystem (BDS)− Radio Frequency Subsystem (RFS) − Power Subsystem (PWS)

Different types of BTSs are implemented by distinct BDS or RFS.

I1 BTS = all-IP BDS + all-IP RFSI2 BTS = all-IP BDS + local HIRS RFS/remote RFSAE BTS = (HIRS + all-IP) BDS + HIRS RFSCBTS = all-IP BDS + all-IP RFSMBTS(all-ip),MBTS(HIRS)

Outline

ZXC10-BTSB Solution

ZXC10-BTSB AE

ZXC10-BTSB I1

ZXC10-BTSB I2

ZXC10-CBTS I1,I2,O1

ZXC10-MBTS

ZXC10-BTSB AE

BDS

RFS

BTSB AE Specifications

BTS Dimensions

Appearance dimension: W×D×H = 750mm×600mm×1800 mm

Installation base dimension : W×D×H = 750mm×600mm×100 mm

BTS Working VoltadgeBSC and BTS Input DC：-48VVoltage floating range : -40V~-57VOther input voltage type：+5V，+27V，±12V

BTSB AE features

Composed of mixed HIRS+IP BDS and usually local HIRS RFS.

Supporting at most 12 carrier sectors with two racks.

Compatible with both ZXC10-BSCB (all-IP) and ZXC10-BSC (HIRS).

No GCM in the BDS so that Time Frequency Subsystem (TFS) is provided in RFS for system clock and frequency generation, whichincludes GPSTM, FDM and TCM.

SIM is required for transferring clock from HIRS part to IP part.

Typical BDS Configuration of AE

CHM

RI

M

CHM

CHM

CCM

CCM

AE B D S IP +H IR S

DSM

SNM

SAM

SI

M

RFI

M

CHM

CCM

CCM

CDSU

CHM

RFI

M

CHM

PSMB

PSMB

CHM

RI

M

CHM

CCM

CCM

A E B D S IP

DSM

SNM

SAM

SI

M

PSMB

CHM

A E B D S H IR S

SAM

RFI

M

CHM

CCM

CCM

CDSU

CHM

RFI

M

CHM

PSMB

PSMB

Power Supply Structure

PSMD

PPM

PPM

PPM

PPM

PPM

PSMC

PSMC

P SMB

PSMB

EBDS

-48V IN

-48V OUT

+5V +5V

HPA X6

+27V

TRX X6

RFE X6

FDM

-12V+12V

Typical BTSB AE and Its Principle

RFE(Alpha)

TRX

RFCM

EBDS机框

HPA

TRX

RFCM

HPA

TRX

RFCM

HPA

T

X

T

X

T

X

RFE(Beta)

RFE(Gamma)

R

X

0

R

X

1

R

X

0

R

X

1

R

X

0

R

X

1

Outline

ZXC10-BTSB Solution

ZXC10-BTSB AE

ZXC10-BTSB I1

ZXC10-BTSB I2

ZXC10-CBTS I1,I2,O1

ZXC10-MBTS

ZXC10-BTSB I1

BDS

RFS

ZXC10-BTSB I1 Features

Designed based on IP platform. Two separate cabinets: BDS cabinet and RFS cabinet. Two types of RFSs: local RFS and remote RFS.

Providing a large system capacity. 1 BDS can support 1 local RFS and 6 remote RFSs, with up to total 24 carrier sectors

Supporting super BTS configuration: 1 master BDS+4 slave BDSs.

Supporting comprehensive services and flexible configuration

I1 Baseband Digital Subsystem (BDS)

Providing the interfaces with BSC and BTS

With the function of baseband signal processing, such as channel coding/decoding, baseband modulation/demodulation, and spreading/despreading.

Providing system clock and frequency for transceiver use.

Supporting 1 Master BDS and 4 Slave BDS for the super BTS configuration.

Including front boards: DSM, CCM, CHM, GCM, SNM, RIM, SAM; and rear boards BIM0~BIM6 and BIM10.

Radio Frequency Subsystem

Modulating baseband signals onto RF carriers

Providing linear amplifier for forward signals and low noise amplifier for reverse signals.

Supplying ports for antenna

Composed of 3 shelves: TRX shelf, LPA shelf and RFE shelf.

Consisting boards/modules: TRX, BTM, TSM, RSM, LPA, and RFE.

Working Principle

Sign

alin

g

Sign

alin

ToR

FSs

......

......

......

ToR

FSs

ToR

FSs

Fibe

rFi

ber

Fibe

r

Power Subsystem (PWS)

PWS implements the AC-to-DC conversion, AC/DC power distribution & monitoring, and the storage battery management.

PWS Principle

Outline

ZXC10-BTSB Solution

ZXC10-BTSB AE

ZXC10-BTSB I1

ZXC10-BTSB I2

ZXC10-CBTS I1,I2,O1

ZXC10-MBTS

BTSB I2 features

BDS of I2 used almost the same boards as those used in I1 BDS, such as CCM, CHM, DSM, GCM, RIM.

Additional CDM (Clock Distribution Module) is used to further convert the GCM output 30MHz into two frequencies for TRX use: 12MHz for 800MHz and 850MHz frequency band; and 10MHz for 450MHz, 1.9GHz and 2.1GHz frequency band.

BIM9 board is plugged to connect the BDS - RFS and 1st rack with 2nd rack and BTS-BSC.

I2 BDS + local RFS + max. 6 remote RFS, so that 1 BDS supports 12 carrier sectors.

I2 BTS consists of at most 2 racks, i.e., 2 BDS, providing 24 carrier sectors capacity.

ZXC10-BTSB I2 Principle

Outline

ZXC10-BTSB Solution

ZXC10-BTSB AE

ZXC10-BTSB I1

ZXC10-BTSB I2

ZXC10-CBTS I1,I2,O1

ZXC10-MBTS

ZXC10 CBTS I1 features

ZXC10 CDMA2000 Compact Base Transceiver Station - I1 also referred to as CBTS I1.

ZXC10 CBTS I1 features

CBTS I1 comprises two shelves; upper shelf contains 17 slots, having BDS and TRX boards. The lower shelf contains RFE, Linear Power Amplifier (LPA) and Power Amplifier Interface Module (PIM).

CBTS I1 is an economical BTS with basic functions. A single BS supports four carriers and three sectors at most, consuming 10 W/20 W power on average per carrier/sector. It is applicable to areas with heavy traffic and several carriers.

ZXC10 CBTS I2

ZXC10 CDMA2000 Compact Base Transceiver Station- I2 also referred to as CBTS I2.

ZXC10 CBTS I2 features

CBTS I2 cabinet comprises two racks that include CBTS I2 rack and PSWB rack, and each rack contains different boards. There are three shelves in CBTS; RFE/DPA shelf, FAN shelf, TRX/BDS shelf

CBTS I2 is an economical BTS with basic functions. A single CBTS I2 rack can support a maximum of 12 carrier-sectors for EV-DO and maximum of 24 carrier-sectors for 1X . It is applicable to areas with heavy traffic and several carriers.

ZXC10 CBTS O1

ZXC10 CDMA2000 Compact Base Transceiver Station – O1 also referred to as CBTS O1.

ZXC10 CBTS O1 features

CBTS O1 cabinet consists only one CBTS rack, and rack contains different boards. There are three shelves in CBTS O1; RFE/DPA shelf, FAN shelf, TRX/BDS shelf.

CBTS O1 is an outdoor BTS comprising single CBTS rack. A single BS supports 12 carrier-sectors for EV-DO application and 24 carrier-sectors for 1x application. It features wide coverage and applies to suburbs, plains, scenic spots, highways and railways.

Outline

ZXC10-BTSB Solution

ZXC10-BTSB AE

ZXC10-BTSB I1

ZXC10-BTSB I2

ZXC10-CBTS I1,I2,O1

ZXC10-MBTS /RBTS

ZXC10 MBTS/RBTS

With the continuous emergence of new technologies, intelligent Base Transceiver Stations (hereinafter called BTS for short) with small size, low power consumption, low cost and high reliability become the development trend

Micro BTS Intoduction

ZXCBTS M800ZXCBTS M802ZXCBTS M190ZXCBTS M191ZXCBTS M192

ZXC10-BSC

Mobilestation CDMA micro-BTS CDMA BSCUm interface Abis interface

ZTE CORPORATION develops ZXCBTS CDMA micro base transceiver station and remote station products.

ZTE CORPORATION develops ZXCBTS CDMA micro base transceiver station and remote station products.

ZXC10 Micro /Remote BTS Features

Advanced design: The system integrates advantages of the existing CDMA micro base transceiver station and RF remote station products of foreign countries.

Flexible configuration: ZXCBTS CDMA micro-BTS and remote stations can be combined to implement multiple configurations.

The micro-BTS could be configured with a built-in 155M SDH optical transmission subsystem to save users’ investment and improve the construction speed.

Hardware of Micro-BTS

1

2

3

4

5

6

7

8

9 10 11

1 Baseband processing module, BDM board; 2 Timing & frequency module, GPSTM;3 power, MPD; 4 diversity filter, MDIV; 5 Low-noise amplifier, MLNA; 6 High power amplifier, MPA; 7 Tx/Rx duplexer, MDUP; 8 power arrestor; 9 Antenna feeder arrestor; 10 E1 arrestor; 11 optical transmission module;

1 Baseband processing module, BDM board; 2 Timing & frequency module, GPSTM;3 power, MPD; 4 diversity filter, MDIV; 5 Low-noise amplifier, MLNA; 6 High power amplifier, MPA; 7 Tx/Rx duplexer, MDUP; 8 power arrestor; 9 Antenna feeder arrestor; 10 E1 arrestor; 11 optical transmission module;

Hardware of Remote-Station

The structure is very similar to micro-BTS!

Just no baseband signal processing , GPSTM inside remote station

The structure is very similar to micro-BTS!

Just no baseband signal processing , GPSTM inside remote station

R FM

MPD

MDIV

MLNA|

MLNA2

MPA

MDUP

M LN AM P A

光纤M TR X

R FE -A N T1

TX

R X 0

R X 1

R FE -A N T0

门Box cover