evolving imt-2000 standards

May 9 -13, 2004 GSC-9 Seoul, Korea Slide 1

GSC9/JOINT_004

John VisserPhone: +1 613-763-7028Fax: +1 613-765-6257Mobile: +1 613-276-6096Email: [email protected]

Evolving IMT-2000 Standards

mailto:[email protected]





IMT-2000 Revolution is Underway

• Mobile overtakes fixed on a global basis

Source: http://www.itu.int/osg/spu/spunews/2003/flash/september.html

http://www.itu.int/osg/spu/spunews/2003/flash/september.html


IMT-2000 Revolution is Underway

• Strong advantages over first building ubiquitous fixed infrastructure in developing markets

Source: http://www.itu.int/osg/spu/spunews/2003/flash/september.html

http://www.itu.int/osg/spu/spunews/2003/flash/september.html


What comes next?

• Alternatives:– Could just focus only on mobile networks and

how they evolve (needs to be done anyway)– Could look just at the integration of fixed and

mobile networks (will happen anyway)• Should look at the general case:

convergence of traditional fixed networks, mobile networks, information technology and broadcast


End Objective

• Provide the best possible suite of services and capabilities to end users in a seamless and effortless manner– as straightforward as plugging an appliance

into an electrical outlet?• The right standards framework and the

right standards within that framework will be essential

Graphics from: http://www.goinginstyle.com/gis/body_category.asp?dept_id=2

http://www.goinginstyle.com/gis/body_category.asp?dept_id=2






4G?

• Many talk very easily about “4G”– everyone’s Marketing Dept. touts “4G”

products• Reality:

– a continuum of capabilities which extend and enhance 3G, expected to include:

• higher data rates (including WLAN integration)• improved roaming• true inter-system mobility management


Out

side

Cam

pus

Fixed

Walk

Vehicle

With

in C

ampu

s

Fixed/Desktop

Walk

Mobility

CD

MA

2000 1X EV-DO

& U

MTS

HiperLA

N2

802.11a, g LAN

802.11b

Wireless Landscape

Wireless Local Area Network (WLAN)

• Public or Private Site or Campus• Enterprise / premises application voice

& data network extension• Nomadic / “pull” services • Non-licensed spectrum

>3G

Mbps1 10 1000.1C

DM

A2000 1X

GSM

/GPR

S

DECT

Bluetooth

Wireless Wide Area Network (WWAN)

• Metro/Geographical area• “Always On” Services• Ubiquitous public connectivity with

private virtual networks


User’s Perspective

• 1 user: 1 terminal

• 1 user: n terminals

• n users: 1 terminal

Reality

Increasing service content: voice to multimedia

Incr

easi

ng M

obili

ty

Mobile

PDA

Mobile

Laptop

Expectation


Operator’s Landscape

• “Fast” mobility: mobile terminal with seamless voice, low speed data hand-off

• “Nomadic” mobility: session in one hot spot; move between adjacent hot spots

• Ad hoc networks: use spare resources of neighbours for dynamic connectivity

• Terminal mobility: plug into any access• User mobility: use any terminal


Beyond IMT-2000

• Heterogeneity of installed base means capabilities will not be uniformly available

• “4G” will not be uniformly deployed, so:– need to characterize the local capabilities– terminals need to adapt to local environment

• Much is possible but ideals that could be achieved must be tempered by the reality of what can be paid for


W+/W- Integration

• How should this be approached?– from a fixed network perspective: add

functions to also support mobile users?– from a wireless network perspective: what is

needed to also support fixed users?• Points of view

– fixed network specialists tend to start from first

– wireless network specialists tend to start from second


W+/W- Integration: perspective change?

• Are we just (re-)using some wireless network solutions to provide similar services in a similar way to fixed users?

• Or, are we missing a key element?– wireless networks have long been treated as

a means of access to fixed network services– now starting to see fixed networks being used

as a means of access to wireless networks• Are the roles reversing? or just equalizing?


W+/W- Convergence Underway

• ITU-T:– Rec. Q.1761 “Principles and Requirements for

Convergence of Fixed and Existing IMT-2000 Systems”

– Q.F/13 “NGN mobility and fixed-mobile convergence”– Q.K/16 “Mobility for Multimedia Systems and

Services”– Multiple Qs in SSG

• ETSI TISPAN: applying 3GPP Rel. 6 IMS• Others certainly working subject


WWAN and WLAN Integration

• Concept: based on what user is doing and on availability of local resources, switch seamlessly between WLAN and WWAN to optimize both user experience and resource utilization– users demanding high data rates more likely

to be nomadic: use WLAN where available– voice users could be served by either: could

use WLAN to conserve WWAN resources


WLAN and Fixed Integration

• Mesh networks– utilize concept to optimize backhaul

• Ad hoc networks– minimize infrastructure requirements for low

user density or in an emergency where infrastructure damaged or destroyed


Convergence

Architectural

Services

Infrastructure

Internet Intranet

CDMAGSM UMTS

GGSN

PDFHLR/HSS

SGSN

PDSNMGW

PSTN

Call ServerMGCF

HAPDG

Call Server

R4 BICN

Internet Intranet

WLANDSL/Cable

PDSNMGW

PSTN

Call ServerMGCF

PDG

Call Server

Application Servers

Internet Intranet

Application Servers

CDMAGSM UMTS WLAN DSL/Cable

GGSN

PDFHLR/HSS

SGSN

PDSNMGWPSTN

Call ServerMGCF

HAPDG

CSCF/SCMIntelligent Infrastructure

R4 BICN

Access Independence

Packet Based

This animated chart is provided as three

discrete charts at the end of this package.


NGN

• General case: convergence of fixed and mobile networks, data and broadcast– “Global Information Infrastructure”

• GII now referred to as “Next Generation Network”– Do standards for IMT-2000 and “systems

beyond” become NGN standards?


GII is all about convergence

Internet, Broadcasting, Telephony, ...

Telecommunications

Computer information

Consumer Entertainment

GII

TODAY

NEAR FUTURE

Telecommunications

Computer information


GII

AIM

TelecommunicationsComputer

information


GII • Y-series Recommendations: GII• Per Fig. 5-1/Y.110 – GII is at the centre of

the threefold industry convergence

The NGN 2004 Project will establish implementation guidelines and standards for the realization of Next Generation Networks based on GII concepts.


Conclusion

• IMT-2000 and systems beyond:– must ensure we address convergence starting

from the right perspective– mobility is an integral part of and the starting

point for NGN– studies require identification and review of

pre-conceptions and assumptions to test their validity


Convergence - Non-animated - Step 1

Architectural

Internet Intranet

CDMAGSM UMTS

GGSN

PDFHLR/HSS

SGSN

PDSNMGW

PSTN

Call ServerMGCF

HAPDG

Call Server

R4 BICN

Internet Intranet

WLANDSL/Cable

PDSNMGW

PSTN

Call ServerMGCF

PDG

Call Server



Architectural

Services Internet Intranet

CDMAGSM UMTS

GGSN

PDFHLR/HSS

SGSN

PDSNMGW

PSTN

Call ServerMGCF

HAPDG

Call Server

R4 BICN

Internet Intranet

WLANDSL/Cable

PDSNMGW

PSTN

Call ServerMGCF

PDG

Call Server

Application Servers



Architectural

Services

InfrastructureInternet Intranet

Application Servers

CDMAGSM UMTS WLAN DSL/Cable

GGSN

PDFHLR/HSS

SGSN

PDSNMGWPSTN

Call ServerMGCF

HAPDG

CSCF/SCMIntelligent Infrastructure

R4 BICN

Access Independence

Packet Based

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