Standard Activities ofITU-T Special Study Group on

IMT-2000 and Beyond

Young Kyun Kim, Ph.D.Vice Chair, ITU-T SSG on IMT-2000 and Beyond

Senior Vice President, Samsung Electronics

For HSN 2001For HSN 200114-16 February 200114-16 February 2001

- 2 -

• Member of IMT-2000 Standards family• MOBILE MULTIMEDIA

All systems, All servicesAll systems, All servicesIntegrated provision of personalized, enhanced seIntegrated provision of personalized, enhanced services over the most efficient / preferred networksrvices over the most efficient / preferred networks

• Many, seamlessly integrated systems

• PERSONALISED SERVICES

From IMT-2000 to Beyond IMT

MARKET drivenMARKET driven

- 3 -

•For usersFor users -True Personalized Services-True Personalized Services•Which Applications?Which Applications? - always working across networks and- always working across networks andbeing aware of users’ situationbeing aware of users’ situation•Which Technologies?Which Technologies?-Re-configurable radio architecture-Re-configurable radio architecture-Efficient Protocols for Wireless services-Efficient Protocols for Wireless services-IP Evolution-IP Evolution

After Mobile Internet, What is Next?After Mobile Internet, What is Next?

Vision of Systems Beyond IMT-2000

- 4 -

ITU-T Objectives and Point of View:

• Continue and enhance cooperation and Collaboration for IMT-2000 global standards:– Set the scene for continuing cooperation and collaboration for

IMT-2000 global standards– Inform SDOs of 3GPPs about WTSA discussions and decisions

on the new Special Study Group on IMT-2000 and beyond– Re-initiate interaction with SDOs of 3GPPs for mutual benefit– Discuss how and where ITU-T’s new SSG on “IMT-2000 and

beyond” can add value, with the aim of reaching an agreement on responsibility split between ITU-T and SDOs:

• Identify and define work items• Set timetable for when results are needed• Identify and initiate realistic and workable mechanisms for

maintaining and enhancing ongoing collaboration and cooperation

- 5 -

Outline:ITU-T IMT-2000 and Beyond

• Past: what has ITU-T done so far?

• Present: what is ITU-T doing now?– NNI (Core Network to Core Network Interface)

• Future: why create this special study group?– Growth of Wireless Access, Internet

– Correlation of Wireless Access and Internet

• Why is this SG special?– Recommendation A.9 Provisional Working Procedures

– Management Team

• Going forward– Mandate and organization of work

– Emphasis on collaboration, cooperation, partnering

– Going beyond IMT-2000

WTSA-2000

- 6 -

IMT-2000: Pre-WTSA-2000

WTSA-2000

Other IMT-2000 Activities in ITU-T

• Services (SG 2)

• Numbering & Identities (SG 2)

• OAM (SG 4)

• Security (SG 7)

• Interworking (SG 13)

• Speech & Video coding (SG 16)

Radio Communications

Mobile

IMT-2000 Radio Aspects

Telecomms. Standards

Signaling & Protocols

IMT-2000 Signaling Req’ts

- 7 -

IMT-2000: Pre-WTSA-2000

- 8 -

ITU-T IMT-2000 Specifications:Structure

- 9 -

ITU-T IMT-2000 Specifications:Current Status

- 10 -

GSC5 and RAST 8 Resolution 6:Common NNI

The Global Standards Collaboration 5 (GSC5) meeting

(Williamsburg, Virginia, 1999) and the Radio

Standardization 8 (RAST8) meeting jointly

resolve

that they recognize the need for the common NNI

protocol in a multi-network environment in order to

derive benefit from existing (“fixed” and “mobile”)

investments and supports in principle the ITU-T SG 11

effort in support of global roaming and seamless

service provisioning. ...

- 11 -

IMT-2000 Family of Systems and NNI

• ITU-T adopted the IMT-2000

Family of Systems Concept

with the understanding that

IMT-2000 standardization work

is to be carried out in close

cooperation with regional

standards bodies

• Global roaming and seamless

service provision to subscribers

are key operator targets

• Close cooperation and collaboration between ITU-T and the SDOs developing IMT-2000 Family Member specifications will greatly facilitate the harmonization and timely availability of global standards for the world community

- 12 -

ITU-T IMT-2000 Interfaces:NNI status

- 13 -

SSG - IMT-2000 and Beyond

• Why create this study Group?

– growth of wireless access outstripping traditional access

• soon will be over 50% of all subscribers

• already the case in some markets (Scandinavia, Japan, Mexico, ...)

– explosive growth of the Internet

• strong correlation between wireless access and internet usage

• leads to “Wireless Internet”

– multiple forums working on 3G systems

• need to promote harmonization and convergence

• rapidly increasing importance of globalization

WTSA-2000

- 14 -

Wireless Internet

- 15 -

Millions

1996 1997 1998 1999 2000 2001 2002 2003 2004 2005

1,400

1,200

1,000

800

600

400

200

0

More handsets than PCs than PCs connected to the internet by the by the

end of Yr 2003!end of Yr 2003!

More handsets than PCs than PCs connected to the internet by the by the

end of Yr 2003!end of Yr 2003!

Projectedcellularsubscribers(Nokia 1999)

Projected PCsconnected tothe Internet(Dataquest 10/98)

Projected Webhandsets(Nokia 1999)

Mobile Internet Outlook

- 16 -

Migration towards an IP-basedbackbone network is taking place

- 17 -

IP Core

Network

IMT-2000

Network

Voice Core

NetworkPSTN

InternetCable

Access

Wireless

Access“ Open Network Architecture based on IP Core Network ”

“ Open Network Architecture based on IP Core Network ”

Future IMT-2000 Network

- 18 -

Why is this SG special?

• Given significant freedom in conducting its business:

– Paperless meetings to maximum extent possible

– Reduced meeting notice requirements (one month, electronically)

– Reduced contribution submission deadline

– All documents to be available on ITU web site

– Meeting reports to be made available quickly

– May use teleconferences, other means to conduct work

• A de facto trial of selected reform aspects!

• Plus has the usual powers of a Study Group:

– Create and approve Recommendations

– To advise TSAG on effectiveness of new procedures

- 19 -

Summary of Mandate (1 of 2)

• Lead SG on IMT-2000 and beyond and for mobility

• Primary responsibility within ITU-T for overall network aspects of IMT-2000 and beyond

– Work plan

– Migration path from existing IMT-2000 systems towards systems beyond IMT-2000

• Long term common IP-based architecture

• Near term IP-based internetworking

– Overview road map

– Interworking functions, if not done elsewhere

- 20 -

Summary of Mandate (2 of 2)

• In addition, will study:

- Harmonization of IMT-2000 Family members as they evolve beyond IMT-2000

- Evolution of network aspects utilizing IMT-2000 RTTs as FWA

Network aspects of convergence of fixed and wireless networks

- Standardization of IMT-2000 interfaces where needed

• Work with ITU-D to assist developing countries in applying IMT-2000

Collaborate with ITU-R 8F (radio) and 8D (satellite)

• Strong cooperative relations and complementary programs with

SDOs, 3GPPs

• May develop and approve Recommendations

- may investigate and make proposals to TSAG on alternative types of output and associated approval process, e.g., normative technical specifications or interim Recommendations

• Make use of provisional working procedures specific to SSG

- 21 -

Assigned Questions

• Q.A/IMT: Network signaling requirements for wireless access to services provided over IP-based networks

• Q.B/IMT: Network signaling requirements for emerging

mobility services (IMT-2000 and their evolution) including

services over IP-based networks

• Q.C/IMT: Network signaling requirements for the support of

Virtual Home Environment (VHE) in mobile networks

• Q.D/IMT: Network signaling protocols for emerging mobility

services (IMT-2000 and their evolution), including IP services

- 22 -

Working Party Structure

WP 1/SSG Service and Interface requirements for IMT-2000 and BeyondChairman: Mr. Syed Husain (Motorola, USA)Vice-Chairman: Mr. Kirit Lathia (Siemens, Germany)Vice-Chairman: Mr. Hiroshi Nakamura (NTT DoCoMo, Japan)

WP 2/SSG Application and Interworking of IMT-2000 SystemsChairman: Mr. Leslie Graf (Ericsson, Australia)Vice-Chairman: Mr. Maurice Ghazal (MPT, Lebanon)Vice-Chairman: Mr. Patrick Masambu (Communications Commission, Uganda)

WP 3/SSG Harmonization and Convergence of IMT-2000Systems

Chairman: Mr. Young Kim (Samsung Electronics, Korea)Vice-Chairman: Mr. Krishna Sirohi (Ministry of Comms, India)Vice-Chairman: Mr. Yuri Trofimov (NIIR, Russia)

- 23 -

Question Allocation

WP 1 Service and Interface requirements for IMT-2000 and BeyondQ.1/SSG Service and network capability requirements and network

architecture

Q.2/SSG NNI mobility management protocol

WP 2 Application and Interworking of IMT-2000 SystemsQ.3/SSG Identification of existing and evolving IMT-2000 Systems

Q.4/SSG Interworking functions to be used with existing and evolving IMT-2000 systems

Q.5/SSG To participate in the preparation of a Handbook on IMT-2000

WP 3 Harmonization and Convergence of IMT-2000 SystemsQ.6/SSG Harmonization of existing IMT-2000 Systems

Q.7/SSG Convergence of fixed and existing IMT-2000 systems

Management TeamQ.8/SSG Special Study Group working procedures

- 24 -

Revised Questions (1 of 3)

Q.1/SSG Service and network capability requirements and network architecture

– establish a clear vision for future mobile services and network capability requirements for “beyond IMT-2000 systems”

Q.2/SSG NNI mobility management protocol

– define new mobility management signaling application protocols, or enhancements to existing protocols, needed to support IMT-2000 services to enable global roaming between different IMT-2000 family systems

Q.3/SSG Identification of existing and evolving IMT-2000 Systems

– identify architectures, detailed specifications and releases which have been and will be produced by recognized SDOs which make up existing and evolving IMT-2000 systems

- 25 -

Revised Questions (2 of 3)

Q.4/SSG Interworking functions to be used with existing and evolving IMT-2000 systems

– identify (and define if not done elsewhere) Interworking functions to facilitate appropriate Interworking between existing and evolving IMT-2000 family members, PSTN/ISDN and Packet Data networks

Q.5/SSG Preparation of a Handbook on IMT-2000– work with the D and R sectors, coordinate T sector input for a handbook on IMT-2000 to assist developed and developing countries

Q.6/SSG Harmonization of existing IMT-2000 Systems– define interface requirements and network architectures for harmonization of existing and evolving IMT-2000 systems to provide seamless global roaming for IMT-2000 future Capability Sets (that will include high speed packet data, multimedia, and IP-based services)

- 26 -

Revised Questions (3 of 3)

Q.7/SSG Convergence of fixed and existing IMT-2000 systems

– describe the principles and requirements for the convergence of fixed and IMT-2000 networks

– describe the architectural requirements for a converged core network to support IMT-2000 capabilities accessible from various wireless and wire line access technologies to support current and evolving IMT-2000 capabilities

Q.8/SSG Special Study Group working procedures

– considering the provisional working procedures for the SSG (Rec. A.9), develop further working procedures (including new output document types as appropriate) to ensure that the SSG can respond rapidly to the requirements of Member States and Sector Members

- 27 -

Deliverables (1 of 2)

- 28 -

Deliverables (2 of 2)

- 29 -

• Recommendation on harmonization principles of existing IMT-2000 systems– Completion Date: 4Q 2001– Activities

• To define the scope and charter for carrying out the work assigned to the question

• To draft outlines for the deliverable(s)• Confer the results of first Q.3 Rapporteur’s meeting• Analyse existing IMT-2000 systems to be harmonized• Identify issues, requirements and level of the harmonization of

existing IMT-2000 systems

• Recommendation on the harmonization requirements of existing IMT-2000 systems

– Completion Date: 4Q 2002

Proposed Work Plan for Q.6/SSG (1 of 2)

- 30 -

• Recommendation on a mid-term harmonized network architecture including the enhancements of the concept within Recommendation Q.1711 (functional architecture) in close cooperation with external organizations – Completion Date: 4Q 2003

– Activities

• Analyse the concepts within Recommendation Q.1711 (functional architecture)

• Recommendation on a mid-term information flows for the harmonized IMT-2000 systems – Completion Date: 4Q 2004

Proposed Work Plan for Q.6/SSG (2 of 2)

- 31 -

• Recommendation on principles and requirements for convergence of fixed and existing IMT-2000 systems – Completion Date: 2Q 2002– Activities

• Cover the identification of work done (e.g., IETF, ITU, 3GPPs)• Analyse the fixed systems to be converged• Analyse existing IMT-2000 systems to be converged• Analyse the first deliverable of Q.6/SSG (principles and

requirements of harmonization, expected completion at 4Q 2001)

Proposed Work Plan for Q.7/SSG (1 of 4)

- 32 -

• Recommendation on network architecture and interface requirements to facilitate evolution of existing fixed networks towards converged core network supporting IMT-2000 capabilities– Completion Date: 1Q 2003– Activities

• Define a functional architecture with possible mapping to existing standards (with information from 3GPPs, IETF, ITU-T)

• Identify any new network entities needed to achieve convergence

• Concerning interfaces, identify – potential protocols and the additional requirements needed

on the current protocols to achieve convergence– the need for new protocols (in particular if new functional

entities have identified)

Proposed Work Plan for Q.7/SSG (2 of 4)

- 33 -

• Recommendation on access network interface requirements for utilizing IMT-2000 RTT as FWA with existing fixed networks – Completion Date: 4Q 2003

– Activities

• Enhance existing access network interface requirements

• Address the potential new radio interfaces which could be used with fixed access

Proposed Work Plan for Q.7/SSG (3 of 4)

- 34 -

• Recommendation on Architectural and network interface requirements for converged core network to facilitate

services transparency to users across different access arrangements, including migration path for network

convergence – Completion Date: 4Q 2004– Activities

• Develop architectural requirements for converged core network consistent with the long term network architecture as delivered by Q.1/SSG to ensure capture of the convergence requirements

• Cover further evolution of network entities and protocols needed to achieve convergence

Proposed Work Plan for Q.7/SSG (4 of 4)

- 35 -

Upcoming ITU-T SSG Meetings

Rapporteurs:• Feb 12-14 Stockholm Q.3/SSG• Feb 14-16 Paris Q.1/SSG

TSAG• Mar 19-23 Geneva Oversight & Coordination

Full SSG• May 7-11 Geneva• Aug or Sep Brazil (tbc)

- 36 -

Relationships

• ITU-R• ITU-D• 3GPP• 3GPP2• IETF• Regional SDOs• Other relevant fora

– OHG

– 3G.IP

– MWIF

– etc.

- 37 -

Approach

How and on what topics can ITU-T SSG on “IMT-2000and beyond” and 3GPP2 work together?

- 38 -

Where ITU-T can add value in globalIMT-2000 and beyond standardization

• Leadership through coordination, consensus building, and collaborative working arrangements– with 3GPPs, SDOs, other relevant fora

• Facilitating adoption of appropriate external specifications as ITU-T Recommendations– act as a single source for IMT-2000 and related standards

• Development of requirements and architectural framework Recommendations as needed and appropriate– provide context and structure for IMT-2000 related specifications

• Identifying emerging industry needs for global standards– propose efficient and coordinated work planning and sharing

arrangements with external forums to meet needs

• Facilitating interoperability and interworking between IMT-2000 family members for global roaming, seamless service delivery– provide interworking specifications if not done elsewhere

- 39 -

Straw man for collaboration &cooperation: 3GPPs SDOs & ITU-T

• Discuss and agree on a framework for cooperation and collaboration on the architectural framework, signaling requirements and protocol aspects of IMT-2000, including the following:– revisions and updates of existing framework and signaling

recommendations

– development of the Common NNI for interoperability and seamless global roaming in a multi-network environment

– work schedule

– appointment of contact persons for each of the cooperating standards bodies

– implementation mechanisms (e.g., exchange of meeting reports, holding of coordination meetings, etc.) to ensure maximum degree of efficiency