MTM’99 Workshop

Heidelberg, 25 February 1999

Network Architectures for future mobile systems:

The roles of IP and ATM

Guilhem Ensuque

BT Laboratories, UK

guilhem.ensuque@bt.com

MTM’99 Workshop

Heidelberg, 25 February 1999

Task 3: Advanced software

Task 4: Network architectures

Task 2: Wireless Transport

AgentManagementService

SecurityService

AgentTransportService

EnhancedServices

AgencyID

GeneratorInformationBase

AgentExecutionService

AgentCommunication

Service

TransactionService

Network

Project outline

MTM’99 Workshop

Heidelberg, 25 February 1999

Task 4 participants

MTM’99 Workshop

Heidelberg, 25 February 1999

Rationale

• Vision: UMTS = ubiquitous high-speed intelligent multimedia services.

• Current situation: UMTS Phase 1 = GSM + more capacity

FILL THE GAP !

MTM’99 Workshop

Heidelberg, 25 February 1999

Ways to explore Wireless LANs

ATM and mobility

IP end-to-end

MTM’99 Workshop

Heidelberg, 25 February 1999

B-ISDN Architecture

SS7

STP

STPU-HLR

STP STP

APT

BRAN

EMAS - N

APT

EMAS - E

EMAS - N

APC

EMAS - E

APT

BRAN APT

APC

WATM

B-ISDN

RNC

Node B

U-VLR

UTRAN

RNC

Node B

U-MSC

AAL switching

Query Function

Other NetworksSTP

LS

MTM’99 Workshop

Heidelberg, 25 February 1999

Mobile ATM/PNNI Architecture

SS7STP

U-HLR

STP

RNC

Node B

U-VLR

STP

UTRAN

RNC

Node B

U-MSC

APT

BRAN

EMAS - N

APT

EMAS - E

EMAS - N

APC

EMAS - E

APT

BRAN APT

APC

AAL switching

WATM

PNNI core network

LS

Signalling gateway

MTM’99 Workshop

Heidelberg, 25 February 1999

IP architecture

Operator’s IP backbone

Global Internet

GGSNSGSN

GSM BSS

BTS BSC

HLR CSE

IGSN*

SIP proxy, DNS, Diameter, WWW,

email...

Mobile IP

Media Gateway

Signalling Gateway Call Agent

NAS

Operator’s Server Farm

Wireless LAN

SS7

STP

PSTN, GSM, other legacy

N*64kbps C.S.N. ...

APT BRAN APC

APT

Node B RNC

RNC

UTRAN

AAL

WAP

Support for:•real-time QoS•multicast•accounting

MTM’99 Workshop

Heidelberg, 25 February 1999

Future Context

1999 2000 2001 2002 2003 2004 2005 2006

GPRS roll-out UMTS Phase 1 UMTS Phase 2

IP Telephony

multicast

IP QoS

AAA

Mobile IP

The IP wave

A Wireless IP world

The mobile wave

Laptops ubiquitous

Bluetooth

Mobile PDAs

Wearable computers

MTM’99 Workshop

Heidelberg, 25 February 1999

What role for ATM?

• ATM to the terminal hasn’t come true

• Use ATM for QoS guarantee

IP

ATM

MTM’99 Workshop

Heidelberg, 25 February 1999

Hybrid architecture

IP network

Server farm

Wireless LANs

Node B RNC

RNC

UTRAN

AAL

BRAN

APT

APT

APC

IGSN

ATM backbone

IGSN