17-cdmabss rac introduction

8/11/2019 17-CDMABSS RAC Introduction

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Huawei Confidential. All Rights Reserved

CDMA WLL IntroductionCDMA WLL Introduction

Issue 1.0Issue 1.0

Internal Use

ChapterChapter 1 CDMA WLL Introduction1 CDMA WLL Introduction

Chapter 2 RAC Signalling Flow

Chapter 3 RAC Hardware

Chapter 4 RAC Hardware Signal Flow


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Internal Use

CDMA WLL Network StructureCDMA WLL Network Structure

Introduction

LE

MIP HA

AAA

PDSN/FA

Abis

BTS

A10/A11

Um

V5

LEV5Optical

FiberSoftsite

Um

Remote Model

Abis

E1/STM-1

Module

RAC6610

BTS

BTS

SMC

Abis

FWT

INTERNET

Internal Use

Definition and Function of interfaceDefinition and Function of interface

Um interface:Interface between MS and BTS, bear services and

signal

Abis interface:Interface between BSC and BTS, bear services and

signal

V5/V5.2 interface: Interface between BSC and LE, bear services and

signal

A3/A7 interface:Interface between BSC and other BSC, bear services

and signal

A8 interface: bear service between BSC and PCF

A9 interface: bear signal between BSC and PCF

A10 interface: bear service between PCF and PDSN

A11 interface: bear signal between PCF and PDSN


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Internal Use

Software structure of a RAC6610Software structure of a RAC6610

V5

VCN

BSCPCF

IWF

To LE

To BTS

MC

Internal Use

Chapter 1 CDMA WLL Introduction

ChapterChapter 2 RAC2 RAC SignallingSignalling FlowFlow




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4

InternalUse

CallprocessofIntra-RACso

fthandoffservice

CallprocessofIntra-RACha

rdhandoffservice

InternalUse

MS VCNBSS

1. Origination Message

3. Complete L3 Info:CM Service Request

2. BaseStation Ack Order

4. ESTABLISH

LE

5. ESTABLISH ACK

8. Assignment

Request

7. ALLOCATIONCOMPLETE

6. ALLOCATION

11. BS Ack Order

10. Tch Preamble

9. Channel Assignment

Message

14. Service ConnectCompletion

13. Service ConnectMessage

12. MS Ack Order

16. Send Called

Number(DTMF/FSK)

15. Assignment

Complete

17. Ringback Tone

MSInitiatedCallSetup

MSInitiatedCallSetup


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5

InternalUse

MS BSS

5. Paging Reque

9. Complete L3 InPaging Respons

6. Page Message

14. BS Ack Order

13. Tch Preamble

10. Base Station

Ack Order

17. Service Connect

Completion

16. Service Connect

Message

15. MS Ack Order

18. AssignmenComplete

8. Page ResponseMessage

11. Assignment Re

12. Channel Assignment

Message

19. Alert with Info

20. MS Ack Order

21. Connect

22. BS Ack Order

23. Connect

InternalUse

MSInitiatedCallRelease

MSInitiatedCallRelease

7.ClearCommand

MS

VCN

RAC

1.ReleaseOrder

2.Clear

Request

4.DISCONNECT

LE

5.DEALLOCATION

6.DISCONNECT

COMPLETE

8.ReleaseOrder

9.Clear

Complete

10.DEALLOCATION

COMPLETE

3.SIGNAL(onhook)


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Internal Use

LE Initiated Call ReleaseLE Initiated Call Release

6. Clear Command

MS VCNRAC

2. SIGNAL (on hook)

LE

3. DISCONNECT

4. DEALLOCATION

7. Release Order 5. DISCONNECTCOMPLETE

10. DEALLOCATIONCOMPLETE

1. SIGNAL

8. Release Order

9. Clear Complete

Internal Use

An MS be in one of the 3 states during data transmission:

Active: In this state, physical traffic channel exists

between MS and BTS, and both sides may transmit

data.

Dormant: In this state, no physical traffic channel

exists between MS and BTS. But the PPP connection

between MS and PDSN is maintained.

NULL: In this state, neither physical connection nor

PPP link is existed.

MS states transition during packet callMS states transition during packet call


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Internal Use

State TransitionsState Transitions

Active State Dormant State

Null State

Setu

pUm

A8

A10

ReleaseU

m

A8

A10

Set up UmA8

Release UmA8

Rele

ase

A10

Internal Use

1.Origination Message

MS VCNRAC/PCF PDSN

3. CM Service Request

2. BS Ack Order

5.TCH Establishmentprocedure

4. Assignment Request

6. A11-RegistrationRequest

7. A11-Registration Reply (Lifetime, Accept)

8. AssignmentComplete

11. A11-Registration Request (Lifetime, Accounting)

12. A11-Registration Reply (Lifetime,accept)

9. Establish PPP Connection

10. User Data Transmission

MS Originated Packet Call SetupMS Originated Packet Call Setup


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Internal Use

MS Terminated Packet Call SetupMS Terminated Packet Call Setup

1.Packet Data

MS VCNRAC/PCF PDSN

3. BS ServiceResponse

2. BS Service Request

10.TCH Establishment

procedure

4.Paging Request

7.Complete L3 info:

Paging Response

Dormant, PPP connection is maintained

5.Paging Message

6.PageRespons Message

8. BS Ack Order9. Assignment

Request

11. AssignmentComplete

Active Packet Data Session

Internal Use

Packet Data Service Session ClearingPacket Data Service Session Clearing -- PDSN InitiatedPDSN Initiated

3. A11-Registration

Request

MS VCNRAC/PCF PDSN

2. A11-Registration

Ack

4. A11-Registration

Reply

5. Clear Request

7. TCH Release

1. A11-Registration

Update

6. Clear Command

8. Clear Complete


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Internal Use

Packet Data Service Session ClearingPacket Data Service Session Clearing -- MS InitiatedMS Initiated

3. Clear Command

MS VCNRAC/PCF

1. Release Order

PDSN

2. Clear Request

5. A11-Registration

Request

6. A11-RegistrationReply

7. Clear Complete

4. TCH Release

Internal Use

IntraIntra--RAC soft handoff additionRAC soft handoff addition

2. Null forward traffic channelframes

3. Handoff Direction Message

4. MS Ack Order

5. Reverse Traffic Channel Framesor Traffic Channel Preamble

6. Handoff Completion Message

7. BS Ack Order

8. Handoff Performed

1. Pilot Strength MeasurementReport

MS RAC/ BTS VCN


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10

InternalUse

2.HandoffDirectionMessage

3.MSAckOrder

4.HandoffCompletionMessage

5.BSAckOrder

6.HandoffPerformed

InternalUse

Intra

Intra--RAChardhandoff

RAChardhandoff

MS RAC+BTS VCN

1. Handoff Required

2. Handoff Request

3. Null forward traffic channel

frames

4. Handoff Request Ack

5. Handoff Command

6. Handoff Direction Message

7. MS Ack Order

8. Handoff Commenced

9. Reverse Traffic Channel Frames or Traffic

Channel Preamble

10. Handoff Completion Message

11. BS Ack Order

12. Handoff CompletionMessage

13. Clear Command

14. Clear Complete


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Internal Use



ChapterChapter 3 RAC3 RAC HardwareHardware


Internal Use

Configuration for large capacity (10K Subscribers)Configuration for large capacity (10K Subscribers)

BHCA: 120k

Traffic amount: 900 Erl

Channels on Um interface: 1,350TCE

Transcoder (TC): 1,024

Echo Canceller (EC): 1,024

Maximum number of carrier sectors: 96

BTS trunking capability: 32E1

PSTN trunking capability: 32E1

Number of V5 interface circuits: 960

Number of PPP connections: 35,000

Number of PPP activated connections: 2,500

Packet data service throughput: 10Mbps

CRPS

CIPS

A3/A7

V5 Abis

A10/A11

BAM Optical

LAN


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13/21

Internal Use

WLL CIPSWLL CIPS SubrackSubrack FunctionFunction

V5 physical interface

V5 signalingprocessing

Abis

Physicalinterface

Signaling control

Speech encodingand decoding.

Service

frameselection,

data

allocation

To CRPSTo CRPS

To STE/LETo STE/LE

To STE/LETo STE/LE

Abis OMLAbis OML

Abis signalingAbis signaling

Abis trafficAbis traffic

Internal Use

WLL CIPSWLL CIPS SubrackSubrack boardsboards

1514131211109876543210

CAIE

CIWF

CSPU

CSPU

CLCB

CEVC

CEVC

CMUX

CMUX

CEVC

CEVC

CIWF

CFMR

CFMR

CFMR

CBIE

CLCB provides V5 signaling processing (Layer2) Measurement, maintenance and troubleshooting

of V5 signaling


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Internal Use

Provide periodicaltime synchronization

Inter-subrack

interworking switching

Packet dataservice processing

WLL CRPSWLL CRPS SubrackSubrack FunctionFunction

Provide A3/A7

physical interface

Subscriberdata management

Resource

management

Packet data AAL5 Cells

From original CIPS

From original CIPS

To Service SubrackFrom GCKP

To IWF

GRE Packet

To target CIPS

Internal Use

C

LI

U

WLL CRPSWLL CRPS SubrackSubrack boardsboards

1514131211109876543210

C

LI

U

CHA

C

CPC

U

CBP

U

C

PP

U

CUM

B

CMU

X

CMU

X

CUM

B

CSM

U

CSM

U

CRM

U

CRM

U

CBI

E

CUMB - Subscriber Data Management

CSMU - Message processing and protocol conversion

between the VCN module and the Message Center

CLIU - Provides ATM optical interface for the connectionwith the CMUX in CIPS


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Internal Use

Downlink Data Flow in CRPSDownlink Data Flow in CRPS

CHAC CBPU CPPU CLIU

To PDSN To CIPS

ATM Bus

Internal Use

Uplink Data Flow in CRPSUplink Data Flow in CRPS

CHAC CBPU CPPU CLIU

To PDSN To CIPS

ATM Bus


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Internal Use

Data Signaling flow in CRPSData Signaling flow in CRPS

CHAC CPCU CRMU CLIU

To PDSN To CIPS

ATM Bus

Internal Use

1514131211109876543210

CPCU

CPPU

CMUX

CMUX

CBPU

CHAC

CHAC

CBPU

CBPU

CBPU

CBPU

CPPU

CPPU

CPPU

CPPU

CPCU

For data packets > 40Mbps

WLL CPMSWLL CPMS SubrackSubrack boardsboards


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Internal Use




Chapter 4 RAC Hardware Signal FlowChapter 4 RAC Hardware Signal Flow

Internal Use

BSC Clock System FlowBSC Clock System Flow

CLKM

CR

M

U

CL

I

U

CB

P

U

CM

U

X

CP

P

U

BITS clock source

2MHz line clock extracted by V5 interface

CRPS8k, 32M

LE

V5

Abis

C

F

M

R

C

M

U

X

C

S

P

U

C

X

I

E

CIPS

RFN pulse

8k, 32MRFN cell

8k, PP16S, absolute time information

C

I

W

F

C

E

V

C

C

L

C

B

C

A

I

E

BTS

CP

C

U

CH

A

C

PDSN

A10/A11 A3/A7

BSCCX

I

E

CU

M

B


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Internal Use

Voice Signaling FlowVoice Signaling Flow

C

L

I

U

C

X

I

E

C

F

M

R

C

M

U

X

C

S

P

U

C

L

C

B

C

A

I

E

C

B

T

S

LE

CRPS

CIPS

TDM switching

AAL2 switching

AAL2 terminating

TDM bearer

AAL2 bearer

AAL5 bearer

Inbandsignaling

Abis

V5

Inbandsignaling

MS

Um

C

U

M

B

Outbandsignaling

Inter-subrack channel

(a)

(b) (b)

(b)

(c)

(d)

(d)(e)

(e)

/C

B

I

E

CRMU

Internal Use

Packet data signalling flowPacket data signalling flow

C

L

I

U

C

R

M

U

C

H

A

C

C

X

I

E

C

F

M

R

C

M

U

X

C

S

P

U

C

B

T

S

P

D

S

N

CRPS

AAL2 switching

AAL2 destination

AAL2 bearer

AAL5 bearer

In-bandsignalling

Out-bandsignalling

C

P

C

U

Ethernet bearer

Abis

A11

MS

Um

Inter-subrackinterconnecting

channel

C

U

M

B


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Internal Use

IWF signalling flowIWF signalling flow

AAL2 terminating

C

R

M

U

C

X

I

E

C

F

M

R

C

M

U

X

C

S

P

U

C

I

W

F

C

A

I

E

C

B

T

S

LE

CRPS

CIPS

TDM switching

AAL2 switchingTDM bearerAAL2 bearer

AAL5 bearer

Inbandsignaling

Abis

V5

Inbandsignaling

MS

Um

C

L

C

B

C

L

I

U

Outbandsignaling

Inter-subrack channel

C

U

M

B

(a)

(b) (b)

(b)

(c)(d)

(e)

(f)

(g)

(h)

(h)

/C

B

I

E

Internal Use

Voice traffic flowVoice traffic flow

C

X

I

E

C

F

M

R

C

M

U

X

C

E

V

C

C

A

I

E

C

B

T

S

LE

CIPS

TDMswitchingAAL2 switching

AAL2 destination

TDM bearer

AAL2 bearer

Abis

V5

MS

Um


20/21

Internal Use

Packet data traffic flowPacket data traffic flow

C

L

I

U

C

P

P

U

C

B

P

U

C

X

I

E

C

F

M

R

C

M

U

X

C

E

V

C

C

E

V

C

C

A

I

E

C

B

T

S

CRPS

CIPS

AAL2 switching

AAL2 destination

Ethernet bearer

AAL2 bearer

C

H

A

C

P

D

S

N

AAL5 bearer

Abis

A10

Inter-subrackinterconnecting channel

MS

Um

Internal Use

IWF traffic flowIWF traffic flow

C

X

I

E

C

F

M

R

C

M

U

X

C

E

V

C

C

I

W

F

C

A

I

E

C

B

T

S

LE

CIPS

TDMswitching

AAL2 switching

AAL2 destination

TDMbearer

AAL2 bearer

Abis

V5

MS

Um


21/21

Internal Use

Voice Traffic FlowVoice Traffic Flow

CA

IE

CI

WF

CS

PU

CL

CB

CE

VC

CM

UX

CF

MR

CX

IE

CP

PU

CB

PU

CR

MU

CM

UX

CU

MB

CP

CU

CH

AC

CL

IU

CX

IE

CA

IE

CI

WF

CS

PU

CL

CB

CE

VC

CM

UX

CF

MR

CX

IE

Original CIPS Target CIPS

V5 subscribers are bound to V5 Interface.

CRPS

Internal Use

17-cdmabss rac introduction

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