cbts3606-hardware-system

ORF00102 CDMA 1X BTS3606 Hardware System

ORF00102 CDMA 1X BTS3606 Hardware System

Mobile Network Curriculum

Development Section

OverviewOverview

Internet

PSTN/ISDN

PLMNA3/A7

A1/A2

A10/A11

Abis

A1/A

2

BSC/PCF

BSC/PCF

MS

A10/

A11

Abis

Abis

BSS CN

BTS

Abis

BTS

BTS

BTS

BTS

BTS

ODU

ODU

ODU

ODU

MS

BTS3601C/ODU3601C BTS3606 cBTS3612BTS3612A

Optical fiber

MS

M ob ile Ne two rk

Ma na ge me nt Syste m

Packe t Do ma inNe twork E qu ipm en t

C ircuit Do ma in

Ne twork Eq uip me nt

Internet

PSTN/ISDN

PLMNPLMNPLMNA3/A7

A1/A2

A10/A11

Abis

A1/A

2

BSC/PCF

BSC/PCF

MSMS

A10/

A11

Abis

Abis

BSS CN

BTS

Abis

BTSBTS

BTSBTS

BTSBTS

BTSBTS

BTSBTS

ODUODU

ODUODU

ODUODU

ODUODU

MSMS

BTS3601C/ODU3601C BTS3606 cBTS3612BTS3612A

Optical fiber

MSMS

M ob ile Ne two rk

Ma na ge me nt Syste m

Packe t Do ma inNe twork E qu ipm en t

C ircuit Do ma in

Ne twork Eq uip me nt

ObjectivesObjectives

BTS3606 system and structure.

Function of all BTS3606 boards.

Antenna & Feeder system

Networking configuration

At the end of this presentation, you will be familiar with:

Course ContentsCourse Contents

Chapter 1 System Overview

Chapter 2 Structure & Board

Chapter 3 Networking

Technical Features of BTS3606A Technical Features of BTS3606A

Support both the CDMA2000 1X and 1xEV-DO

standards.

•Support CDMA2000 1X / 1xEV-DO hybrid networking. The ratio of CDMA2000 1X and CDMA2000 1xEV-DO carriers is flexible.

•Allow mixed configuration of single-channel and multi-channel transceiver modules.

Technical Features of BTS3606A Technical Features of BTS3606A

•Support the mixed insertion of different-band

carriers in the same cabinet.

• The BTS3606A can be cascaded with the

ODU3601C to expand the coverage area of radio

network flexibly.

•The maximum average transmit power is 25

BTS3606 SpecificationsBTS3606 Specifications

Cabinet dimensions (Height x Width x Depth)

1400 mm x 600 mm x 650 mm

Power supply-48 V DC (ranging from-40 V DC to -60 V DC)

+24 V DC (ranging from +21 V DC to +29 V DC)

Weight 250 kg

Power consumption 3400 W

Ambient temperature -5C to 50C

Relative humidity 5% to 90%

Equipment room noise 70 dBA (The noise varies with the ambient temperature)

Reliability

Availability 99.999%

MTBF 100000 h

MTTR 1 h

Mean Time Between Failures

Mean Time To Repair

BTS3606 CapacityBTS3606 Capacity

IS-95 CDMA20001X CDMA20001X-EV-DO

Number of subscribers

supported by 1 carrier

20 40 48

Maximum reverse

channel capacity of one

carrier

128

channels

128 channels 64 channels

Chapter 2 Structure & Board Chapter 2 Structure & Board

2.1 Hardware Construct2.1 Hardware Construct

2.2 Baseband Subsystem

2.3 Radio Frequency Subsystem

2.4 Antenna & Feeder Subsystem

2.5 Power Supply Subsystem

BTS3606 CabinetBTS3606 Cabinet

(1) CDDU Subrack

(2) Switch Box

(3)Fan Box

(4)Combined Subrack

(5) Cable Trough

(6)Power Supply Subrack

(7)Tool Kit

PSU

C

DD

U

CH

P

A

CT

R

M

CH

P

A

CT

R

M

CH

P

A

CT

R

M

CH

P

A

CT

R

M

CH

P

A

CT

R

M

CH

P

A

CT

R

M

C

D

D

U

C

D

D

U

PSU

PSU

C

CP

M

C

CP

M

B

CK

M

C

CP

M

C

CI

M

C

CP

M

C

CP

M

B

CK

M

C

CP

M

Tool Kit

Switch Box

Cable Trough

Fan Box

BTS3606 Logic StructureBTS3606 Logic Structure

BSC

Basebandsubsystem

Power supplysubsystem

RFsubsystem

Abisinterface

Uminterface

MSAntenna & feeder

subsystem

-48V/+24V

BTS3606


2.1 Hardware Construct

2.2 Baseband Subsystem2.2 Baseband Subsystem




BTS3606 Baseband SubsystemBTS3606 Baseband Subsystem

BCIM ： BTS Control

Interface Module

CCPM ： Compact-BTS

Channel Process Module

BCKM ： BTS Control and

Clock Module

PSU

C

D

DU

CH

PA

CT

RM

CH

PA

CT

RM

CH

PA

CT

RM

CH

PA

CT

RM

CH

PA

CT

RM

CH

PA

CT

RM

C

D

DU

C

D

DU

PSU

PSU

C

CP

M

C

CP

M

B

CK

M

C

CP

M

C

CI

M

C

CP

M

C

CP

M

B

CK

M

C

CP

M

CCPM

4

CCPM

2

CCPM

0

BCKM

0

BCI

M

0

CCPM

5

CCPM

3

CCPM

1

BCKM

1

NULL

Baseband Functional DiagramBaseband Functional Diagram

BCIM

BCKM

E1/T1BSC

BCPM

...

Clo

ck b

us

Back

pla

ne b

us

Other funcitonalunits of the system

Optical inerface

Electric interface

ODU3601C

CTRMSatellite signal

receiving antenna

BCKM

BCIM

...10 MHz clock cable

CCPMHPCM(Optional)

Test equipment10MHz

1PPS

BCKM’s FunctionsBCKM’s Functions

Call procedure control

Signaling processing

Channel management

Resource management

Cell configuration

Notice:Notice:

BCKMBCKM

When GPS, GLONASS or external synchronous

1PPS Signals are activated, the clock is in the

normal running mode.

When GPS, GLONASS or external synchronous

1PPS fails, the local clock is in the holdover mode.

Under this state the system can run normally for

more than 8 hours.

Active/Standby RunningActive/Standby Running

BCKMBCKM

When fault occurs in the active BCKM, then the

services will switch over to the standby BCKM under the

control of the related software or automatically. In

following three cases this switching is occurred:

A. Abnormality in CLK leads to BCKM switchover.

B. Abnormality in MPU leads to BCKM switchover.

C. The hardware failure and damage of important devices of

the board lead to BCKM switchover.

BCKM FacetBCKM Facet

BCKMBCKM

GPS/GLONASS antenna port

ETH (Ethernet interface). A

user can login BTS3606 for

operation and maintenance

by telnet.

Normal status:Status (RUN) Indicator: flashes slowlyAlarm (ALM) indicator: OFFOperation (ACT) indicator: ON

BCIM’s FunctionsBCIM’s Functions

Providing multiple E1/T1 links

Realizing the IMA/UNI protocol

Support ATM over Fractional E1/T1

Support 8E1

IMA ModuleIMA Module

IMA

E1 Interface

E1 Interface

E1 Interface

E1 Interface

E1

E1

E1

IMA

E1 Interface

E1 Interface

E1 Interface

E1 Interface

ATMCell FLOW…

...

11

1

42

2

5 33

3 15 1

4

4Specific

bandwidth

1 1 1 1

4

223 3 3

1 1

4

Specificbandwidth

E1 LinkE1 linkE1 linkE1 link

➪E1 in fixed time slot mode

❑IMA （ Inverse Multiplexing on

ATM ）

4 4

4

16

6

6

77

77

BCIMBCIM

Functional DiagramFunctional Diagram

BESPBESP

8 E1s

4 E1s

4 E1s

Inte

rface

DB

37

BSCInterfaceDB25

Inte

rfac

eD

B2

5

BESP

BSC

BCIM

...

...

Level-1 Level-2

protection

PGND

Level-1 protection

Level-2 protection

PGND

Level-1 Level-2

protection

PGND

BCIMBCIM

Normal status:Status (RUN) Indicator: flashes slowlyAlarm (ALM) indicator: OFFOperation (ACT) indicator: ON

BCIM facetBCIM facet

CCPM’s FunctionsCCPM’s Functions

In the forward direction, the CCPM completes the following functions:

Encoding (including convolutional code and turbo code)

Interleaving

Spreading

Modulating

Data multiplexing

In the reverse direction, the CCPM completes the following

functions:

Decoding

De-interleaving

De-spreading

Demodulating

Data demultiplexing

Connect to ODU3601C by optical port




2.3 Radio Frequency Subsystem2.3 Radio Frequency Subsystem



Structure of RF subsystemStructure of RF subsystem

CDDU:Compact-BTS Dual

Duplexer UniT

CTRM: Compact-BTS

Transceiver Module

CFMM:Compact-BTS Fan

Monitor Module

CHPA:Compact-BTS High

power Amplifier

CHPA

CTRM

CHPA

CTRM

CHPA

CTRM

CHPA

CTRM

CHPA

CHPA

CTRM

CTRM

1 3 5

0 2 4

CFMM

CHPA

CTRM

CHPA

CTRM

CHPA

CTRM

CHPA

CTRM

CHPA

CTRM

CHPA

CTRM

CDDU

CDDU

CDDU

RF Functional DiagramRF Functional Diagram

TX1

RX1

TX2

RX2

CHPA

CTRM

CDDU

CTRM

CHPA

CCPM

CCPM

Electrical interface

Electrical interface

CTRM’s FunctionsCTRM’s Functions

•In the reverse link, the CTRM receives the main and diversity RF

signals from the antenna and feeder subsystem, and then changes

them into baseband signals through down conversion, wave filtering

and multiplexing. Finally the CTRM sends the baseband signals to the

baseband subsystem.

•In the forward link, the CTRM receives the baseband signals from the

baseband subsystem, and then changes them into RF signals through

de-multiplexing, wave filtering and up conversion. Finally the CTRM

sends the RF signals to the RF subsystem through the CDDU.

•Supported band: 450 MHz, 800 MHz, and 1900 MHz

CTRMCTRM

CTRM facet CTRM facet DRI

Inputs Diversity Receive signals

MROOutputs Main

Receive signals

RF Subsystem

MRI Inputs Main

Receive signals

TX1 /Tx2Leads out to

CHPA

CHPA’s Functions

RF power amplification

Over-temperature alarm

Over-excited alarm

Gain decrease alarm

OUT

IN

OUT

CDDU’s FunctionsCDDU’s Functions

Provide duplex isolator and low

band filter for two receiving and transmitting

signals.

Test the coupling of transmitting and receiving signals.

TX1

TX2

RX1

RX2

TX1/RX1

TX1

TX2

RX1

RX2

TX1/RX1 ANT

TX2/RX2 ANT

CDDU facetCDDU facet

CDDUCDDU

CDDU

TX1/RX1-TEST

TX2/RX2-TEST

TX

2/R

X2-

AN

T

TX

1/R

X1-

AN

T

TX/RX to antenna

Subsystem

Transmit signals

From CHPA

Receive signals

To CTRM

Configuration of RF Subsystem 1Configuration of RF Subsystem 1

CDDUCHPA

CTRM

Antenna

Configuration of RF Subsystem 2Configuration of RF Subsystem 2

CDDUCHPA

CTRM

Antenna

CHPACTRM





2.4 Antenna & Feeder Subsystem2.4 Antenna & Feeder Subsystem


RF Antenna &FeederRF Antenna &Feeder

Sect

or

¦ B

Sect

or¦

A

Sec t

or¦

C

Antenna

Feeder

Jumper

Jumper

BTS cabinet

Note: BTS3606 receiver is provided by CLK on BCKM.

Dual-satellite Synchronization Antenna & FeederDual-satellite Synchronization Antenna & Feeder

Inner cable

Receiver on BCKM

GPS/GLONASS receiving antenna

Feeder

Jumper

BTS3606 cabinet

Lighting arrester






2.5 Power Supply Subsystem2.5 Power Supply Subsystem

BTS3606 Power Supply SubsystemBTS3606 Power Supply Subsystem

Subsystem uses three PSUs in full configuration. The

PSUs work in the 2+1 redundancy mode. Can use -48 V DC input or +24 V DC input. Input voltage: -40VDC ～ -60VDC （ only-48V input ）OUT voltage:+27V

po

we

r d

istr

ibu

tio

n a

nd

ligh

tnin

g p

rote

cti

on

DC /D C D C/DC DC /D C

E M I

Filte r-48 V

+27VDC OUT

L o a d

Moitoringserial port

O1/S1 NetworkingO1/S1 Networking

É ÈÇ øA É ÈÇ øB É ÈÇ øC

TX1

TX2

CTRM

RX2

PAout

TX1

TX2

MRO

MRI

DRI

PAin

CHPA

RX1

CDDU

D1 D2

D4

D3

Sector A Sector B Sector C

O2 NetworkingO2 Networking


TX1

TX2

CTRM

RX2

PAout

TX1

TX2

MRO

MRI

DRI

PAin

CHPA

RX1

CDDU

CTRM

PAout

TX1

TX2

MRO

MRI

DRI

PAin

CHPA CTRM

PAout

TX1

TX2

MRO

MRI

DRI

PAin

CHPA CTRM

PAout

TX1

TX2

MRO

MRI

DRI

PAin

CHPA

D4

D8D7

D6

D3

D5

D1

D2


S1/1/1 NetworkingS1/1/1 Networking


TX1

TX2

CTRM

RX2

PAout

TX1

TX2

MRO

MRI

DRI

PAin

CHPA

RX1

CDDU

TX1

TX2

CTRM

RX2

PAout

TX1

TX2

MRO

MRI

DRI

PAin

CHPA

RX1

CDDU

TX1

TX2

CTRM

RX2

PAout

TX1

TX2

MRO

MRI

DRI

PAin

CHPA

RX1

CDDU

D1

D4

D3

D2

D7

D12

D11

D10D9

D8

D6D5


S2/2/2 NetworkingS2/2/2 Networking


TX1

TX2

CTRM

RX2

PAout

TX1

TX2

MRO

MRI

DRI

PAin

CHPA

RX1

CDDU

CTRM

PAout

TX1

TX2

MRO

MRI

DRI

PAin

CHPA

CTRM

PAout

TX1

TX2

MRO

MRI

DRI

PAin

CHPA

TX1

TX2

CTRM

RX2

PAout

TX1

TX2

MRO

MRI

DRI

PAin

CHPA

RX1

CDDU

CTRM

PAout

TX1

TX2

MRO

MRI

DRI

PAin

CHPA

CTRM

PAout

TX1

TX2

MRO

MRI

DRI

PAin

CHPA

TX1

TX2

CTRM

RX2

PAout

TX1

TX2

MRO

MRI

DRI

PAin

CHPA

RX1

CDDU

CTRM

PAout

TX1

TX2

MRO

MRI

DRI

PAin

CHPA

CTRM

PAout

TX1

TX2

MRO

MRI

DRI

PAin

CHPA

D8

D20

D10D5

D6

D19

D18

D16

D17

D2

D4

D3

D14

D13

D23

D11

D22

D9

D7 D12

D24

D15

D1

D21


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