introduction of wcdma cn

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WNC-002-E1

WCDMA Training —

Introduction of WCDMA CN

V0510

ZTE University

3G Group


Course Objectives

Evolution of WCDMA CN

WCDMA System Structure

Interface and Protocols in R4

Main Process examples

R4 Related Technology


Standardization Organization of 3G

3GPP 3GPP2

IETFCWTS T1P1

TTA

TTC

ARIB

ETSI

ARIBTTC

CWTS

TIA

TTA

Parlay

MWIF

UWCC

MPEGForum

MSF

WAP-Forum

W3C3GCF

LIF

TIPHON

IPv6

GSMA

GSA

3G.IP

ITU-RWP8F ITU-T

SSG


Standardization of WCDMA--3GPP

ETSI TC SMG

T1P1

ARIB

TTA

CWTS

TTC

1998 2001Q2

1999 2000Q2 Q1Q3 Q2 Q3Q4 Q4 Q1Q1 Q2 Q3 Q4Q4 Q3 Q1

3GPP Release 4

3GPP Release 5(ALL IP)

business2001 & 2002

3GPP Release 3(Release 1999)


Course Objectives







Iu-CS Iu-PSGbA

H

CS PS 3G CNGMSC

MSC

MSC

PSTN

HLR

GGSN

SGSN

GSM Access

WCDMAUTRAN

WCDMA R99 System Structure


MSC Function

Call

Process

Call Process 、 Number Translate 、 Route Select EC 、 AMR Voice Process

Security

Security Authentication 、 Ciphering 、 Integrity Protect TMSI Reallocation

VLR Subscriber Data Management Location Update 、 MSRN/HON Allocation

MM Location Update 、 Hand Over 、 Roaming Register

CDR CDR Collect Saving 、 Format 、 Relay


BasicServiceLocation

Subscriber Data

CAMEL Subscription

CAMELO_CSIT_CSISS_CSI

Subscriber Authentication Data

Authentication

Location UpdateRoute UpdateHand Over

MM

HLR/AuC Function


R99 CN CS Signal Interface

RNS RNS

MSC NO.7 MSC

HLRSMC SCP

RANAP RANAP

TUP/ISUP

MAP CAP MAP


R99 Analyze

Advantages

Compatibility of productions now in use (GSM)

R99 System is divided to CS and PS domains

Guarantee of the QoS of RT services

Many experiences on mature technique TDM

Problems R99 does not accord with NGN

Inconvenient to upgrade to R4,R5


Iu-CS Iu-PSGbA

H

CS PSUMTS

CN

MSC

Server

GMGW

PSTN/ISDN

HLR

GGSN

SGSN

GSM Access

WCDMA UTRAN

MGW

GMSC

Server

2G NET R-SGW

T-SGW



WCDMA R4 Characters

The evolution to all-IP step by step in WCDMA network

The main difference happens in CS Domain; in PS, it is all the same

The separation of control and Bearer: MSC to MGW&MSC Server

IP transfer of Signal: SG was introduced

R4 new interface ： Mc ： MSC Server ～ MGW ， H.248 protocol

Nb ： MGW ～ MGW

ATM Bearer ， AAL2

IP Bearer ， RTP

Nc ： MSC Server ～ MSC Server ， BICC protocol


MSC SERVER Function

Mc Mc

Nb

Nc

MSC Server

GMSC Server

MGW MGW

UTRANR99/GSM

/ PSTN

Call Control Function

Signal Interface and Process

VLR Function

Bear Control: 3G expanded H.248

Call Control signal: BICC

MGW Management( Register, status

maintain)

SGW

NO.7


MGW Function

Mc Mc

Nb

Nc

MSC Server

GMSC Server

MGW MGW

UTRANR99/GSM

/ PSTN

SGW

NO.7

Media Bearer establish, release receive control from MGC: H248 Media convert Media resource (Tone/TC/DTMF/Confe

rence) Multi-Bearer (AAL2/ATM, TDM ， RTP/

UDP/IP)


SGW Function

Conversion of Signal an

d Protocol (SIGTRAN M3

UA /SCTP/IP <=> SS7 M

TP3/2/1)

embedded SGW (SG

was embedded in the MG

W chassis or MSC Server

chassis)

Mc Mc

Nb

Nc

MSC Server

GMSC Server

MGW MGW

UTRANR99/GSM

/ PSTN

SGW

NO.7


R4 CN CS Signal

RNS

BSS

Radio Access

MG Control/

Bearer Control

BSSAP

RANAP

Bearer Control

BICC/TUP/ISUP

H.248 H.248

ALCAP/IPBCP

Call Signal between switch

MAP MAP CAP

MM&Service

MSC server

MGW

MSC server

MGW

HLRSMC SCP


R4 Analyze

Advantages

Thought of NGN

Layer structure

IP transfer: a flattened structure

Brings high increase for operator

Challenges Experience on operation

Qos on IP network


CS PS

MSC

Server

GMGW

HSS

GGSN

SGSN

WCDMA UTRAN

MGW

GMSC

Server

IMS

IMS-MGW

SGW

MGCF

CSCF

PSTN

No.7



CSCF （ Call State Control Function ） entity

CSCF

SPD (Serving Profile Database) SPD (Serving Profile Database)

Log

ical

Fu

nction

AH(Address Handing) AH(Address Handing)

ICGW(Incoming call gateway) ICGW(Incoming call gateway)

CCF (Call Control Function) CCF (Call Control Function)


MGCF （ Media Gateway Control Function ） entity

MGCF

Log

ical

Fu

nction

MGW Control MGW Control

SIP UA SIP UA

Conversion Between SIP & BICC/ISUP Conversion Between SIP & BICC/ISUP


Version Radio Access CN CS CN PS

GSM

/GPRS

1 ） FDD TDMA

2 ） 114Kbps

1 ） TDM Transfer 1 ） IP Transfer ，2 ） GTP protocol

3GPP

R99

1 ） FDD WCDMA （ 5M

Hz ）2 ） Iu: ATM

3 ） 2Mbps

1 ） same with GSM

2 ） Iu: ATM Transfer

AMR Codec

1 ） same with GPRS

3GPP

R4

1 ） Same with R99

2 ） support TD-SCDMA

1 ） Separation of control &

bearer

2 ） IP/ATM/TDM Transfer

3 ） TrFo

1 ） same with R99

3GPP

R5

1 ） Iu: IP

2 ） HSDPA: down link: 1

4.4M

1 ） Iu: IP Transfer 1 ） Support of IMS

2 ） Separation of CS

CF and MGCF

Summary


Course Objectives







ATM/IP Backbone

Services

Internet/Intranet

GMSC Server

MSC Server

Iu-C

s McMcMcMc

Nc

Gc

Gr

D

API

GGSNSGSN

MGW

SCPSCP

RNS

PSTN/GSMMGW

HLRHLR

CG

SGC

Iu-P

s

Nb

GnGi

Ga Ga

Interface in R4


ATM/IP Backbone

Services

Internet/Intranet

GMSC Server

MSC Server

Iu-C

s McMcMcMc

NcG

c

Gr

D

API

GGSNSGSN

MGW

SCPSCP

RNS

PSTN/GSMMGW

HLRHLR

CG

SG

C

Iu-P

s

Nb

GnGi

Ga Ga

SAAL

ATM

MTP3b

SCCP

RANAP

MM/CM

Control Plane

AAL2

ATM

IuUP

User Plane

Protocols on Interface


ATM/IP Backbone

Services

Internet/Intranet

GMSC Server

MSC Server

Iu-C

s McMcMcMc

NcG

c

Gr

D

API

GGSNSGSN

MGW

SCPSCP

RNS

PSTN/GSMMGW

HLRHLR

CG

SG

C

Iu-P

s

Nb

GnGi

Ga Ga

SAAL

ATM

MTP3b

SCCP

RANAP

GMM/SM

Control Plane

SAAL

ATM

IuUP

User Plane

IP/UDP

GTP-U



ATM/IP Backbone

Services

Internet/Intranet

GMSC Server

MSC Server

Iu-C

s McMcMcMc

NcG

c

Gr

D

API

GGSNSGSN

MGW

SCPSCP

RNS

PSTN/GSMMGW

HLRHLR

CG

SG

C

Iu-P

s

Nb

GnGi

Ga Ga

SCTP

IP

M3UA

SCCP

TCAP

MAP

IP

MTP3

MTP2

MAP

TDM

SCCP

TCAP

MTP1



ATM/IP Backbone

Services

Internet/Intranet

GMSC Server

MSC Server

Iu-C

s McMcMcMc

Nc

Gc

Gr

D

API

GGSNSGSN

MGW

SCPSCP

RNS

PSTN/GSMMGW

HLRHLR

CG

SG

C

Iu-P

s

Nb

GnGi

Ga Ga

SCTP

IP

M3UA

SCCP

TCAP

CAP

IP

MTP3

MTP2

CAP

TDM

SCCP

TCAP

MTP1



ATM/IP Backbone

Services

Internet/Intranet

GMSC Server

MSC Server

Iu-C

s McMcMcMc

NcG

c

Gr

D

API

GGSNSGSN

MGW

SCPSCP

RNS

PSTN/GSMMGW

HLRHLR

CG

SG

C

Iu-P

s

Nb

GnGi

Ga Ga

SCTP

IP

M3UA

BICC

IP

BICC

ATM

SAAL

ATM

MTP3B



SCTP

ATM/IP Backbone

Services

Internet/Intranet

GMSC Server

MSC Server

Iu-C

s McMcMcMc

NcG

c

Gr

D

API

GGSNSGSN

MGW

SCPSCP

RNS

PSTN/GSMMGW

HLRHLR

CG

SG

C

Iu-P

s

Nb

GnGi

Ga Ga

SCTP

IP

M3UA

H248

IP

H248

ATM

SAAL

ATM

MTP3B



ATM/IP Backbone

Services

Internet/Intranet

GMSC Server

MSC Server

Iu-C

s McMcMcMc

NcG

c

Gr

D

API

GGSNSGSN

MGW

SCPSCP

RNS

PSTN/GSMMGW

HLRHLR

CG

SG

C

Iu-P

s

Nb

GnGi

Ga Ga

UDP

IP

RTP/RTCP

NbUp

IP

NbUp

ATM

ATM

AAL2

User Plane Protocol:

IPBCP

IP

Alcap

ATM

ATM

MTP3B

SAAL

Bearer Control Protocol:



ATM/IP Backbone

Services

Internet/Intranet

GMSC Server

MSC Server

Iu-C

s McMcMcMc

Nc

Gc

Gr

D

API

GGSNSGSN

MGW

SCPSCP

RNS

PSTN/GSMMGW

HLRHLR

CG

SG

C

Iu-P

s

Nb

GnGi

Ga Ga

SCTP

IP

ADAPT(M3UA)

APP(ISUP)

IP

MTP3

MTP2

APP(ISUP)

TDM

MTP1



ATM/IP Backbone

Services

Internet/Intranet

GMSC Server

MSC Server

Iu-C

s McMcMcMc

NcG

c

Gr

D

API

GGSNSGSN

MGW

SCPSCP

RNS

PSTN/GSMMGW

HLRHLR

CG

SG

C

Iu-P

s

Nb

GnGi

Ga Ga

L2

L1

IP/UDP

GTP-C

Control Plane

L2

L1

GTP-U

User Plane

IP/UDP



ATM/IP Backbone

Services

Internet/Intranet

GMSC Server

MSC Server

Iu-C

s McMcMcMc

NcG

c

Gr

D

API

GGSNSGSN

MGW

SCPSCP

RNS

PSTN/GSMMGW

HLRHLR

CG

SG

C

Iu-P

s

Nb

GnGi

Ga Ga

L2

L1

IP/UDP

GTP’



ATM/IP Backbone

Services

Internet/Intranet

GMSC Server

MSC Server

Iu-C

s McMcMcMc

Nc

Gc

Gr

D

API

GGSNSGSN

MGW

SCPSCP

RNS

PSTN/GSMMGW

HLRHLR

CG

SG

C

Iu-P

s

Nb

GnGi

Ga Ga

L2

L1

IP/UDP

Application



Course Objectives



Comparison of WCDMA and GSM/GPRS





A

MSC

Server

MGW

UE

MGW

MSC

Server

NO.7

UE

BHLRHLR

H.248H.248

BICC

MAP

MAP

Basic UE to UE Call


UMTSCN

MSC

Server

GMGW

PSTN/other operator

UE

MGW

GMSC

Server

NO.7

H.248

BICC

H.248

TUP TUP

Basic UE to PSTN Call


Course Objectives







TFO & TrFO

Concept

TFO: Tandem Free Operation: negotiate rate through i

n-band signal, insert a transcoder to support speech be

tween two ends with different codec or voice rates.

TrFO: Transcoder Free Operation: through out-band si

gnal negotiation, it realizes calls that have no transcod

ers involved in the connection between the source cod

ecs

Advantage of TrFO

Improve the quality of speech


Technique of TrFO

A supports rates： 12.2K/7.9K

MSC Server-O MSC Server-T

AMR AMR

AMR OverIP

MGW-O MGW-T

B supports rates：12.2K/7.9K/4.75K

A B

1

Iu

RTP

IP

L2/L1

AAL2

ATM

Iu UP Nb UP

AMR

RTP

IP

L2/L1

AAL2

ATM

Nb UP

AMR

Iu UP

Nb Iu

2

RNC-O RNC-T

TrFo Process


MGW Security Strategy

The same MTP code for MSC Server1

and MSC Server2. SGW integrated to

MGW, RNC connect to MSC Server

via MGW

MGW access to MSC Servers with

different SCTP ， if Primary MSC

Server unavailable, then start the

Secondary MSCS SCTP .

MSCS:A MSCS:B

MGW1 MGW2

Other MSCS

RNCRNC

Primary Link

Secondary Link

——Dual Homing


Large Scale Network

How to decide roaming?

How to chose route? (fixed number as callee number)

The influence to billing

ZXWN MSCS

ZXWN MGW1 RNC ZXWN MGW2

GW

RNC

GW

TMSC

LS/TS LS/TS

0755-4828922 020-4828922

introduction of wcdma cn

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