media gateway 1 mika ahola 22.11.99 media gateway mika ahola [email protected] mobile switching...

Media Gateway 1 Mika Ahola 22.11.99

Media Gateway

Mika Ahola

[email protected]

Mobile Switching Systems Unit, L M Ericsson in Finland


Outline

BackgroundNew network architectureMedia gatewayStandardizationSummary


BackgroundBackground

The New Telecoms World

- a global marketplace- a challenge, a possibility

Competition

Price pressure

Fixed <> Mobile Technologies

Liberalization

Globalcustomers

IP & Internet


Wireless Internet Services

News, weather, sports

Traffic information

Directory services

Time tables

Location-dependant information services, like “find a nearby restaurant”


GSM/UMTS Network (Phase 1)

GSM/UMTS UMTS GSM

Access to people and information

Narrow band

Wide band

UMTSradio

access

GSM radio

access

Internet/intranetPSTN/ISDN

GSM/UMTS core

network


USIM

USIM

SIM

BTSBTSBTSBTSBTS

BTSBTSBTSBTSBTS

BTSBTSBTSBTSBTS

UMTS/GSM Reference Model

User equipment GSM BSS Core networkExternalnetwork

Cu Uu

Um

Iu

A

Iu

Gb

Iur

Abis

Iub

ME

ME

MT

SCPSMS-GMSC

RNC

RNC

BSC

UTRAN

SIM MT BTS BSC

MSC

EIR

GGSN

GMSC

SGSNAUCHLR


UMTS Standardization

GSM BTS

UMTS BTS

GSMBSC

Core network

GSM based evolution to

UMTS

-circuit switched evolution

-packet switched (GPRS)

evolution

Revolution Evolution

UMTSRNC

Abis A

IuIub


Migration Roadmap

1998 1999 2000 2001

GSM

EDGE

UTRANWCDMA

Radio network

Core network

MSC

HSCSD

GGSN+SGSN

GPRS Packet switched

Circuit switched

Bandw

idth

Bandw

idth


Service ProductionFunctionality

Time

SIM toolkit

WAPApplications

Infrastructure

Service enabling technology

IT based services

IN

?Value AddedServices

VOICE MAIL GSN

BSS

SERVER

MSC


TodaySingle-service networks

Next-generation Network StructureNext-generation Network Structure

Dat

a/IP

Net

wor

ks

Dat

a/IP

Net

wor

ks

Cel

lula

r/P

LM

NC

ellu

lar/

PL

MN

PS

TN

/IS

DN

PS

TN

/IS

DN

CA

TV

CA

TV

Services

Access Transport & Switching Networks

Servers

Backbone Network

WirelineAccess

WirelessAccess

FutureMulti-service networks/client-server

Communcationapplications Control

Content Content

CableAccess

Clients/Applications


UTRAN

Ericsson Network Architecture

Wireless AN UTRANWireline AN

MGW

Connectivity backbone(STM, ATM, IP, …)

Media Gateway, handling User Plane

MSCServer

GSNServer

SCP

ResourceNode

Connectivity

Control

Application

HLR

Appl Servers

MGWInternetIntranets

MGWPSTN/ISDN/

PLMN

Server, handling Control Plane & Applications

SCS

MGW


Features of New Architecture:Separation of call control and connectivity/bearer controlFlexible architecture that is possible to use for any connectivity (ATM, IP, STM)Keep the N-ISDN/GSM service paradigm. Use MAP, ISUP, etc.All devices needed for user plane manipulation are moved to the Media Gateway

(echo cancellers, codecs, etc.)Possible to place infrequently used equipment in centralized resource nodesTransmission efficient to have coded speech all the way to the rim of the PLMNUTRAN and the Iu interface is ATM based. A good way to bring in ATM in the core

network is neededAllows stable and mature introduction of UMTS networks since building on GSM

productsNew protocol to control media gateway remotelyServices/applications outside core network enables service convergence In line with standardization trends


MGW

MGW MGW

MGW

Backbone Network

ATMATM ATMATM ATMATMATMATM

ATMATM

ATMATM

ATMATM

ATMATM

AXDAXI 540

AXI 520


Services/Applications Outside Core Network

Application 2

Service Capability Servers

PLMNGen 2 UMTS

PLMNGen 3

PSTN/ISDN

OthermembersIMT-2000

Family

Open I/F

Application 1 Application n


UMTS Standardization Bodies for New Architecture

ControlHLR

GMSC/TransitServer

MSCServer

UTRAN

Connectivity Backbone NWATM, IP...

BTS RNC MediaGW

Media GW

PSTN/ISDN PLMN Internet/ Intranet

N-ISUP

GCP

MAP

RANAP

BICC

MEGACO

ITU-TSG11

Sigtran

SS7 over IPArchitecture

ITU-TSG16

3GPP R00

GCP


Reference Architecture for an All IP Network

GfGi

Iu-ps'

Iu

GiMr

Gi

Ms

Gi

R UuMGW

Gn

Gc

Gp

Signalling and Data Transfer Interface

Signalling Interface

TE MT UTRAN

GrOther PLMN

SGSN

GGSN

GGSN

EIR

SGSN

Gn

MGCF

R-SGW

MRF

MultimediaIP Networks

PSTN/Legacy/External

Applications &Services *)

Mm

Mw

Legacy mobilesignalingNetwork

Mc

Cx

R Um

TE MT ERAN

AlternativeAccess

Network

Mh

CSCF

CSCF

Mg

T-SGW *)

T-SGW *)

HSS *)

HSS *)

Applications& Services *)

MSC server GMSC server

Iu1 = Iucs (RTP, AAL2)

Iu2 = Iu(RANAP)

*) those elements are duplicated for figurelayout purpose only, they belong to the samelogical element in the reference model

McMc

MAP

MAP

SCP

CAP

MGWNb

Nc

Iu1

Iu2

R-SGW *)

Mh

Source:

3GPP TR 23.922 V1.0.0 (1999-10)


Summary

Ericsson offers via the layered architecture an evolutionary approach to the multi-service network

Ericsson offers deployment of ATM & IP-based transport technologies for both UMTS and GSM/GPRS based on open standards.

A Media Gateway product is introduced handling all user plane data in an integrated way and that connects to ATM & IP backbones

New network architecture will be included in release 00 of 3GPP

media gateway 1 mika ahola 22.11.99 media gateway mika ahola [email protected] mobile switching...

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