ORE002101 CDMA2000 BSC Hardware System (Large Capacity) ISSU

7/27/2019 ORE002101 CDMA2000 BSC Hardware System (Large Capacity) ISSU

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ISSUEISSUE

ORE002101 CDMA2000 BSC

Hardware System (large capacity)ORE002101 CDMA2000 BSCORE002101 CDMA2000 BSC

Hardware System (large capacity)Hardware System (large capacity)

3.43.4


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ContentsContents

Overview

CSWS

CIPS

CRPS

Clock System

Windup


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A CDMA NetworkA CDMA Network

BSC/PCF

BSC/PCF

PDSN

MSC

PLMN

A3/A7

A1/A2

A1/A2

A10/A11

BTSSoftsiteMS

MS

Internet

Abis

Abis

PSTN

ISDNBTS

A10

/A11

MS: Mobile StationPCF: Packet data Control Function

PDSN: Packet Data Service NodeBSC: Base Station Controller

MSC: Mobile Switching CenterBTS: Base Transceiver Station

Overview


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Rack DistributionRack Distribution

l CDMA Switch Subrack (CSWS)

l CDMA Integrated Processing Subrack (CIPS)

l CDMA Resource and Packet Subrack (CRPS)

l CDMA Packet Module Subrack (CPMS)

l CLocK processing Module (CLKM)

l CDMA Integrated Management System (CIMS)

Large capacity BSC is divided into following functional

blocks. In general each block corresponds to single

subrack. These are:

Overview


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To/from MSC

To / from PDSN

Optical fiber

To / from NMSLAN

E1

GE

Ethernet

Optical fiber

Optical fiber

CIPS

CIMS

CPMS

CRPS

CSWS

CLKM

To / from PDSNGE

Rack DistributionRack DistributionOverview


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Configuration for 120,000 SubscribersConfiguration for 120,000 Subscribers

n BHCA: 240k

n Voice traffic volume: 2,400Erl

n Um interface: 54,000TCE (traffic channel element)

n A-interface: 38400CIC,1280E1

n Abis interface: 960E1

n 3840 Sector Carriers

n 1,200k Voice Subscribers(0.02Erl/sub)

n 70,000 PPP connections

n 5,000 active PPP connections

n Total flow of packet data: 200Mbps

Overview


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CCTR (CDMA

Controller Rack)

CBUR (CDMA

BUsiness Rack)

Overview

Power distribution box

Cabling Through

Air guide subrack

Fan boxCable trough

Air guide subrack

Fan boxCable trough

Keyboard

Dummy panel

Lanswitch

Dummy Panel

CLKM

Lanswitch

BAM Server

BAM ServerBAM Server

LCD

CSWS

CRPS/

CRMS

CLKM

Cabling though

Dummy panel

Air guide subrack

Fan boxCable trough

Power distribution box

Fan boxCable trough

Fan boxCable trough

Air guide subrack

CIPS/

CPMS

CIPS/CPMS

CIPS/

CPMS


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ContentsContentsBSC Hardware

Overview

CSWS

CIPS

CRPS

Clock System

Windup


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Boards Position in CSWSBoards Position in CSWS

14131211109876543210

C

SA

R

C

NE

T

C

NE

T

C

LP

C

C

LP

C

C

MP

U

C

MP

U

CSWS

C

LP

C

C

LP

C

C

LP

C

C

LP

C

C

LP

C

C

LP

C

C

LP

C

C

LP

C


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Functional Diagram of CSWSFunctional Diagram of CSWS

CLPC

CLPC

CNET

Other boardsOther boards

Other boardOther board

Overview


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CLPCCLPCBoards int roduct ion

Controlling unit of line interface card

Provide eight 155Mbps ATM-over-SDH optical interfaces

Guarantee the ATM QoS

CLPC is responsible for:


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Fast switching of fixed length-packets

CNETCNET

40 switching network ports

Synchronization clock function

Boards int roduct ion

CNET is responsible for:


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CNETCNETBoards int roduct ion

Clockmodule

RUNCLK

ACT

CLK IN0

CLK IN1

CLK OUT0

CLK OUT1

CLK IN2

CLK IN3


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Managing & allocating the resources of CNET

CMPUCMPU

Processing the signaling

Managing & maintaining the boards in CSWS


CMPU is responsible for:

Controls the active/standby switch over


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CMPUCMPUBoards int roduct ion

IDE Hard Disk

RUN

ALMACT

RESET


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Traffic FlowTraffic FlowCSWS

C

M

UX

CM

U

X

C

N

E

T

C

L

P

C


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Maintenance FlowMaintenance FlowCSWS

C

L

PC

C

S

AR

C

N

ET

C

MU

X

C

M

P

U

BAM

Bus

Bus


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Overview

CSWS

CIPS

CRPS

Clock System

Windup


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Boards Position in CIPSBoards Position in CIPS

1514131211109876543210

C

AI

E

C

SP

U

C

SP

U

C

LA

P

C

EV

C

C

EV

C

C

MU

X

C

MU

X

C

EV

C

C

EV

C

C

FM

R

C

FM

R

C

FM

R

C

XI

E

Overview


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Functional Diagram of CIPSFunctional Diagram of CIPS

A1/A2 physical

interface

Abis

Physical

interface

Signaling control

Speech encoding

and decoding

Service

frame

selection,

&

data

allocation

CRPSCRPS

MSCMSC

Abis OMLAbis OML

Abis signalingAbis signaling

Abis trafficAbis traffic

Overview


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The switching & multiplexing functions of ATM services

CMUXCMUX

AAL2 switching function

Synchronization clock function

Manages & monitors the software loading of all boards in

CIPS

Monitors the power of subrack, fan box and environment

operating status


CMUX is responsible for:


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CMUX AppearanceCMUX AppearanceBoards int roduct ion

ETH

1PPS

COM1

COM2

RUN

ALM

ACT

RESET

TX

RX

Optical Module


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CXIECXIE

24 standard E1/T1 interfaces

Providing a processing capability of 24 E1/T1 IMAs and

supporting pure ATM over E1 mode (UNI mode)

the channels for inter-working between CIPS and CRPS

the function of AAL2 switching and AAL5 transparent

transmission, while providing the Abis interface betweenBTS and BSC


CXIE is responsible for:


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CXIE AppearanceCXIE Appearance

To CRPS

To BTS


To BTS


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CFMRCFMR

Selection/DistributionSelection/Distribution

BTS1 BTS2

Power controlPower control

Service

Frame

Service

Frame

Frame protocol

processing

Frame protocol

processingFrame protocol

processing

Frame protocol

processing

Best Frame

Multiplexing/DemultiplexingMultiplexing/Demultiplexing

LAC SARLAC SAR

LAC PDU

TRAU frameTRAU frame RLPRLP

CSPUCSPU CEVCCEVC CPPUCPPU



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CFMR AppearanceCFMR Appearance

RUN

ALM

ACT



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CEVCCEVC

Supports three types of coding: EVRC, QCELP8K and

QCELP13K

lPerform ISLP rate adaptation for circuit data services

below 64Kbps

l Checks and inserts DTMF signals

l Provides the echo cancellation functionbetween BSC & MSC (CEVD could not support this )



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CLAPCLAP

Process the A1/A2 signaling (Layer2)

Measure, maintain and troubleshoot the A1/A2 signaling



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CSPUCSPU

Process the upper-layer signaling including:

Um interface

Abis interface

A1/A2 interface

A3 interface A7 interface

A9 interface

Allocate various resources required during signaling and

traffic connections setup



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CAIECAIE

Provide 32 E1/T1 interfaces

TDM switching and rate conversion

Clock extraction



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CAIE AppearanceCAIE Appearance

S5 S4 S9 S8

S6

S7

S11

S12S15S18

S3 S2 S16 S17 S10 S13

J18

RUN

ALM

ACT

CLK1

E1/T1

CLK2

E1/T1

E1/T1

E1/T1

To GCKP

MSC



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Voice Traffic Flow in CIPSVoice Traffic Flow in CIPS

CXIE CFMR CMUX CEVC CAIE

ATM Bus

Extended TDM Bus

TDM Bus

Funct ions


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Data Traffic Flow in CIPSData Traffic Flow in CIPS

CXIE CFMR

ATM Bus

CBTS CRPS

Funct ions


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Voice Signaling Flow in CIPSVoice Signaling Flow in CIPS

CXIE CFMR CSPU CMUX CAIE

ATM BUS

Expand TDM Bus

TDM BUS

CLAP

Out-band signaling

Funct ions

In-band signaling


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Data signaling Flow in CIPSData signaling Flow in CIPS

CXIE CFMR CSPU

ATM Bus

Out-band signaling

To CRPSIn-band signaling

To CBTS

Funct ions


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ContentsContents

Overview

CSWS

CIPS

CRPS

Clock System

Windup


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Boards Position in CRPSBoards Position in CRPS

1514131211109876543210

C

XI

E

C

PP

U

C

PP

U

C

BP

U

C

HA

C

C

MU

X

C

MU

X

C

HA

C

C

PC

U

C

PC

U

C

RM

U

C

RM

U

C

BP

U

C

XI

E

CRPS


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Provide periodicaltime synchronization

Packet dataservice processing

Functional Diagram of CRPSFunctional Diagram of CRPS

Provide A3/A7physical interface

Resource

management

From CIPS

From original CIPS

To CIPSFrom CLKM

To PDSN

To target CIPS

CRPS


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CMUXCMUX

Manage & maintain the boards in CRPS

lProvide RFN for the system

Note:

l The CMUX in the CRPS is the same as the CMUX in the CIPS.

Boards Int roduct ion


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CXIECXIE

Provide inter-BSC A3/A7 interface, and channel

between CIPS and CRPS

lOffer 24 standard E1s/T1s

Note:

l The CXIE boards in CRPS and CXIE are the same



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CRMUCRMU

Note:

l The CRMUs hardware structure is the same as that of CSPUs,so the indicator meaning of CRMU are also the same.

Process the A3, A7 and A9 interfaces signaling

Maintenance management and distribution of the

A2, A3 and A8 interface resources



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CPPUCPPU

Store and transfer the data packets

Work in load sharing to achieve resource

pool mechanism

Note:

l The CPPUs hardware structure is the same as that of CSPUs

l The indicator states are also similar to the CSPU indicators.



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A9

CPCUCPCU

Signaling Processing A11

CBPU and PPU Session ID

management

Setup of signaling and traffic

connection

Packet call status maintaining

Note:

l The CPCUs hardware structure is the same as that of CSPUs.

l The indicator states are also similar to the CSPU indicators.



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CBPUCBPU

Downlink data buffering, processing and transferring

Note:

lThe CBPUs hardware structure is the same as that of CSPUs.

lThe indicator states are also similar to the CSPU indicators.

Work in load sharing mode to achieve resource pool

mechanism

Re-sequencing the packet sent from PDSN

(transferred via CHAC)



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CHACCHAC

Transfer the traffic data (A10 interface) from PDSN to CBPU

Process the traffic data (A8 interface) from CPPU and SDB data

from CPCU, and transfer them to PDSN via the A10 interface

Transfer A11 signaling data from PDSN to CPCU directly

Provide 1000Mb Ethernet interface to PDSN and support RFC826

(Ethernet ARP) protocol



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CHAC AppearanceCHAC Appearance

RUN

ALM

RESET

O1GIE

TX

RX

SW 1

TX

RX



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Downlink Data Flow in CRPSDownlink Data Flow in CRPS

CHAC CBPU CPPU CXIE

To PDSN To CIPS

ATM Bus

Funct ions


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Uplink Data Flow in CRPSUplink Data Flow in CRPS

CHAC CBPU CPPU CXIE

To PDSN To CIPS

ATM Bus

Funct ions

Bypass the CBPU


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Signaling flow in CRPSSignaling flow in CRPS

CHAC CPCU CRMU CXIE

To PDSN To CIPS

ATM Bus

Funct ions


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Overview

CSWS

CIPS

CRPS

Clock System

Windup


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CPMSCPMSFunct ions

CDMA Packet Module Subrack provides PCF functions, it accomplishes the:

Connection management, mobility management, charging, short

data burst & MD5 encryption

Convert A8 interface data to A10 and vice versa

Provides GRE and IP route displacement and forwarding function

Note: If data throughput is less than 40Mb then only CRPS is enough. For more

throughput we need to configure CPMS.


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CPMSCPMSFunct ions

1514131211109876543210

C

P

CU

C

P

PU

C

M

UX

C

M

UX

C

B

PU

C

H

AC

C

H

AC

C

B

PU

C

B

PU

C

B

PU

C

B

PU

C

P

PU

C

P

PU

C

P

PU

C

P

PU

C

P

CU


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Overview

CSWS

CIPS

CRPS

Clock System

Windup


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CLKMCLKM

CLKM (CLocK processing Module ) is composed of two parts:

l GCKP (GPS/GLONASS & ClocK Processing Board )

l GCKB (Backplane of CLKM )

RUN

ALM

ACTCOM IN0 IN1 OUT ANT

CLK_B COM_B ETH_B CLK_A COM_A ETH_A

Panel of GCKB

Panel of GCKP (Active/Standby)

Funct ions

RUN

ALM

ACTCOM IN0 IN1 OUT ANT


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BSCCloc

kSystemStructure

BSCCloc

kSystemSt

ructure

CLKM

CLKC

C

N

E

T

C

M

P

U

CSWS

C

L

P

CC

B

P

U

C

M

U

X

C

P

P

U

C

P

C

U

C

X

I

E

C

M

U

X

C

B

P

U

C

R

M

U

C

P

P

U

BITS clock source

2MHz circuit clock extracted from A-Interface

CPMS

CRPS

RFN cell

8k 32M

8k 32M

MSC

A1/A2

Abis

PDSN

A10/A11

GCKP GCKP

C

S

P

U

C

M

U

X

C

F

M

R

C

X

I

E

CIPS

RFN pulse

8k 32M

RFN cell

8k

PP16S

absolute time infomation

C

E

V

C

C

L

A

P

C

A

I

E

BTS

C

H

A

C

C

P

C

U

C

H

A

C

PDSN

A10/A11

A3/A7BSC


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Physical ConnectionPhysical ConnectionFunct ions

GCKP

MSCCRPS

CMUX CMUX

Active time

reference sourceStandby time

reference sourceAbsolute time

information

8k

PP16S

GCKPCLKM

CAIE

CXIE

CIPS

CAIE

CXIE

CIPS

BTS BTS

MSC

GCKB

8k

PP16S

CMUX CMUX

CLPC CLPC

CNET CNET

CSWS

Absolute timeinformation


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ContentsContents

Overview

CSWS

CIPS

CRPS

Clock System

Windup


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Software Loading FlowSoftware Loading Flow

BAM

CMUX

in CRPS

Other boards

in CRPS

CMUX

in CIPS

Download

Data/Software

Download

Data/Software

Other boards

In CIPS

GCKB

In

CLKM

Windup


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Voice Signaling FlowVoice Signaling FlowWindup

C

L

P

C

C

N

E

T

C

X

I

E

C

F

M

R

C

M

U

X

C

S

P

U

C

L

A

P

C

A

I

E

C

B

T

S

C

M

S

C

CSWS

CIPS

TDM switching

AAL2 switching

AAL2 termination

TDM bearingAAL2 bearing

AAL5 bearing

In-bandsignaling SS7

signaling

Abis

A1

In-bandsignaling

MS

Um

Out-bandsignaling

C

R

M

U

C

M

U

X

CRPS

C

X

I

E


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Voice Traffic FlowVoice Traffic FlowWindup

CX

I

E

CF

M

R

CM

U

X

CE

V

C

CE

V

C

CA

I

E

C

B

T

S

C

M

S

C

CIPS

TDM switching

AAL2 switching

AAL2 termination

TDM bearing

AAL2 bearing

Abis

A2

MS

Um


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Packet Data Signaling FlowPacket Data Signaling FlowWindup

C

L

P

C

C

X

I

E

C

F

M

R

C

M

U

X

C

S

P

U

C

L

A

P

C

A

I

E

C

B

T

S

CSWS

CIPS

AAL2 switching

AAL2 termination

AAL2 bearing

AAL5 bearing

In-bandsignaling

Out-bandsignaling

C

N

E

T

Ethernet bearing

AbisMS

Um

SS7signaling

C

M

S

CA1

C

X

I

E

C

R

M

U

C

H

A

C

P

D

S

N

CRPS

C

P

C

U

A11

C

M

U

X

TDM switching

TDM bearing

CPMS


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PacketD

ataTraffic

Flow

PacketD

ataTraffic

Flow

Windup

C

L

P

C

C

X

I

E

C

F

M

R

C

M

U

X

C

S

P

U

C

L

A

P

C

A

I

E

C

B

T

S

CSWS

CIPS

AAL2 switching

AAL2 termination

AAL2 bearing

AAL5 bearing

In-bandsignaling

Out-bandsignaling

C

N

E

T

Ethernet bearing

AbisMS

Um

SS7

signaling

C

M

S

CA1

C

X

I

E

C

R

M

U

CRPS

C

M

U

X

TDM switching

C

H

A

C

P

D

S

N

C

P

C

U

A11

C

M

U

X

TDM bearing


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QuestionsQuestions

Q. State the traffic flow in BSC system?

Q. State the signaling flow in BSC system?


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ORE002101 CDMA2000 BSC Hardware System (Large Capacity) ISSU

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