ITU-TITU-T Mobility, 3G and Beyond and NGN

Tatiana Kurakova,

Telecommunication Standardization Sector

Engineer

24 June 2004, Victoria Falls, Zimbabwe

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ITU-TITU-T

A View of Terminal Mobility Versus Personal Mobility

Personal mobility need not carry a

terminal must have a personal

number

Network

wireline

Terminal mobility must carry a wireless terminal must be within radio coverage

Network

wireless

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Definitions• Mobility is the ability to provide services irrespective

of environment changes that may occur by mobile user/terminal/network's activities.

• Personal mobility is the ability of a user to access telecommunication services at any terminal on the basis of a personal identifier, and the capability of the network to provide those services delineated in the user's service profile.

• Terminal mobility is the ability of a terminal to access telecommunication services from different locations and while in motion, and the capability of the network to identify and locate that terminal.

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ITU-TITU-T

Wireless Internet

1998 1999 2000 2001 2002 2003

Source: Strategis Group, World Cellular / PCS Markets, May 1998.

(“Other Digital” refers to PDC and PHS.)

Source: The Yankee Group, Nortel Networks

Subscriber Growth

Data Subscriber Growth

Data Traffic Growth

Voice 96%

Data 4%

Voice 30%

Data 70%

Wireless Applications Growth

0

50

100

150

200

250

300

350

400

1998 2002 2005

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ITU-TITU-T

Group on IMT-2000 and Beyond

Why mobile studies are so important?– growth of wireless access outstripping

traditional access• soon will be over 50% of all subscribers• already the case in some markets

– 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

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Questions under study (1 of 3)

1) 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”

  2) NNI mobility management protocol (Stage 3)

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

  3) Identification of existing and evolving IMT-2000 Systems

    identify architectures, detailed specifications and releases which have been and will be produced by recognized SDO’s which make up existing and evolving IMT-2000 systems.

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Questions under study (2 of 3)

4) 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

5) 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

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Questions under study (3 of 3) 6) Harmonization of evolving 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 include high speed packet data, multimedia, and IP-based services)

7) 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 wireline access technologies to support current and evolving IMT-2000 capabilities  

ITU-TITU-T

The three-stage process for interface specification

Physicalarchitecture

Interfaces

SDL diagrams

Informationflows

Functional architecture

Services/Features Stage 1

Service definition

Stage 2

Signaling requirements

Stage 3

Protocol specification

SDL – System Description Language

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ITU-TITU-T

ITU-T Recommendations developed by SSG (1 of 3)

Q.1702 (06/02) - Long-Term Vision of Network Aspects for Systems Beyond IMT-2000

Q.1703 (05/04) – Service and Network Capabilities Framework of Network Aspects for Systems Beyond IMT-2000

Q.1741.1 (04/02) - IMT-2000 references to release 1999 of GSM evolved UMTS core network with UTRAN access network  

Q.1741.2 (12/02) - IMT-2000 references to release 4 of GSM evolved UMTS core network with UTRAN access network

 

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ITU-TITU-T

ITU-T Recommendations developed by SSG (2 of 3)

Q.1741.3 (09/03) - IMT-2000 References to Release 5 of GSM evolved UMTS Core Network

Q.1742.1 (12/02) - IMT-2000 references to ANSI-41 evolved core network with cdma2000 access network  

Q.1742.2 (07/03) - IMT-2000 references (approved as of 11 July 2002) to ANSI-41 evolved core network with cdma2000 access network  

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ITU-TITU-T

ITU-T Recommendations developed by SSG (3 of 3)

Q.1742.3 (01/04) - IMT-2000 references (approved as of 30 June 2003) to ANSI-41 evolved core network with cdma2000 access network

Handbook “Deployment of IMT-2000 Systems” (11/02)

Q.1761 (01/04) - Principles and requirements for convergence of fixed and existing IMT-2000 systems

Supplement 47 (11/03) - Emergency services for IMT-2000 Networks - Requirements for harmonization and convergence  

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ITU-TITU-T

Questions for further study 1) Service and Network capability requirements and network architecture

2) Mobility Management

3) Identification of existing and evolving IMT-2000 Systems

4) Preparation of a handbook on IMT-2000

5) Convergence of evolving IMT-2000 networks with evolving fixed networks

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Foreseen deliverables (1 of 5)

2004: • Technical Report, Q.TRMMR: Mobility

Management (MM) Requirements for Systems Beyond IMT-2000

• New Recommendation Q.1741.4: “GSM evolved UMTS core network” (References to Release 6)

• New Recommendation Q.1742.4: “ANSI-41 evolved core network with cdma2000 access network”

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Foreseen deliverables (2 of 5)

2004: • New Recommendation Q.FMCstg2:

Network architecture and interface requirements facilitating evolution of existing public fixed networks towards converged core network, supporting IMT-2000 capabilities

• Technical Report: Lawful interception requirements for the converged and the harmonized networks

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ITU-TITU-T

Foreseen deliverables (3 of 5)

2005:

• New Recommendation Q.FNAB: Long-term high-level network architecture for beyond IMT-2000 systems

• New Recommendation Q.FIFB: Long-term high-level network functional information flows for beyond IMT-2000 systems

• Technical Report, Q.MMF: MM Framework and Functional Architecture for Systems Beyond IMT-2000

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Foreseen deliverables (4 of 5)

2005: • Handbook on IMT-2000 deployment,

2nd edition, Core Network Aspects

• New Recommendation: Access network interface requirements for utilizing IMT-2000 radio access technologies as FWA with existing public fixed networks

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Foreseen deliverables (5 of 5) 2006:

• Technical Report: MM Functional Information Flows and Protocol Development

• New Recommendation: 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

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ITU-TITU-T

Mobility Management

• Mobility Management requirements based on Vision, Harmonization, and Fixed/Mobile Convergence studies

• Technical Report nearing completion– assessing protocol candidates based on:

• compatibility with emerging IP-based Core Networks

• re-use of existing specifications from IETF, partner SDOs of 3GPPs, IEEE, others

• smooth migration to longer term requirements

ITU-TITU-T

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

• Leadership through coordination, consensus building, and collaborative working arrangements

– with 3GPPs, OMA, 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 frameworkRecommendations 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

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Envisaged Network Environment Around the Year 2010 (1 of 2)

Market trends• High-speed data connection is a norm• Core network is fully IP-based• Digital TV with data service capability• Existence of many complementary

wireless networks• Users are computer proficient • Users move internationally wanting

their services anytime anywhere• Services are the driver

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ITU-TITU-T

Envisaged Network Environment Around the Year 2010 (2 of 2)

Technology trends

• Software radio technology becomes a main element in the wireless infrastructure

• Mobility management will be supporting higher speed objects such as vehicles

• Concept of seamless services will be extended beyond handover and roaming services

• Security environment around the year 2010

ITU-TITU-T

NGN in ITU-T Main study groups addressing NGN:• SG 11

– Network Signalling and Control functional architectures in emerging NGN environments

– Signalling and control requirements and protocols to support user attachment in NGN environments

• SG 13– Functional requirements, services and architectures

• SSG– Vision for IMT-2000– Mobility Management– Convergence of Fixed and Mobile

• SG16 has developed MM Services specifications directly applicable to NGN with the H.323 system, H.248 gateway control protocol, QoS, Security, Services & Applications

• N.B: all SGs have an “NGN” aspect to their work

ITU-TITU-T • Joint ITU-T SG13-SSG session on

NGN, 5 Nov 02 • NGN-2004 Project description

http://www.itu.int/ITU-T/

studygroups/com13/ngn2004/index.html • Definition of NGN • Workshop on "Next Generation

Networks: What, When and How?"Geneva, 9-10 July 2003

• Joint Rapporteurs Group on NGN (JRG-NGN)

ITU-T NGN Project

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ITU-TITU-T

• 4 meetings held in last 10 months

- last meeting in June 04

• 11 Recommendations under development

• 2 mailing lists open to non-ITU-T members

Joint Rapporteurs Group on NGN (JRG-NGN)

ITU-TITU-T

What is NGN ?• A full (carrier class and business class) service

network– Telephony and other Legacy (including Internet access) services– Data, including High speed access to Internet and its applications– Video (VOD, Streaming)– Digital TV Broadcast, Multimedia (combining all of the above)– Mobility and Nomadism. Interworking with Legacy services for

Human and Machine users (including RFIDs machines)

• Network features and technical characteristics– Packet-based (IP, MPLS, ATM, Ethernet) transport– IP and service intelligence, in an IP-managed network– Distributed, transport-resource-session-service independent control– Using IP-friendly (well defined profile) protocols

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• Always on• Anytime, anywhere and in any form• Voice and multimedia• Self service, intuitive• Simple for the end user• Secure, trusted and reliable

The Transformed Network

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When is NGN coming in ?

• Some (pre-NGN) pieces are already there:– PSTN (VoIP, VoATM) trunking, some VoIP offers

– Private/corporate network solutions (Centrex IP, IP VPN…)

• A long way to the 21st Network. Convergence of Telephony and Data (IT, Internet) approaches:– PSTN/ISDN evolving towards NGN oriented platforms

• Replacement of obsolete PSTN/ISDN network elements: 2005 onwards

– Packet Data networks evolution (Fixed-Internet convergence)

• Evolving from the current High Speed Internet access (ADSL, WLAN …) platforms

• To offer new generation Services: 2005 onwards

– Mobile convergence (IMS): 2006 onwards

ITU-TITU-T

How will NGN be developed and deployed ?

• Replacing progressively legacy PSTN elements/areas– Only when becoming obsolete (too little OPEX/CAPEX

gain, particularly in Core)– Migration of PSTN->NGN might accelerate after 2010

(PSTN lines moved to DSLAMs -> VoIP)

• Green field deployment (today)• Overlay deployment, building over xDSL and Fiber-

based access to Internet– ADSL is being deployed fast, with huge investments– Opportunity to provide new (audio-data-video) services

• Convergence between Fixed-Mobile and Internet services/applications– Nomadicity (Mobility Management for Roaming)– Mobility through Fixed WLAN (spectrum from Fixed -

>Nomadic->Mobile)– Harmonizing/Converging with Mobile IMS and IP-Cable

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Recommended follow-up Actions

• Define Services Framework– Generic service Building blocks (or Capabilities)

– Harmonized with Mobile and Cable/Broadcast

• Define reference Architecture– Built upon IMS, adapted to accommodate xDSL access

• Identify Scenarios and Evolution Steps

• Identify Interfaces subject to standardization

• Prioritise Standardization areas and requirements

• Select protocols and specify their profile(s)

• Interact (and share) with relevant SDOs (IETF, 3GPP) and Fora (e.g. DSL, MSF …)

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ITU-TITU-T

Focus Group on NGN (1 of 2)

• Addresses the market needs for NGN standards

• Created on 7 May 2004 to tackle NGN studies

• Goal – to produce global standards for NGN

• Lifetime till mid 2005

• Reports to TSB Director

• Inherits ~ 11 draft Recommendations from JRG NGN

• Operates in compliance with Recommendation A.7

• Inaugural meeting 23-25 June 2004

• Web site http://www.itu.int/ITU-T/ngn/

• Mailing list fgngn@itu.int

• Paperless meetings

• First meeting documents are public available

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ITU-TITU-T

Focus Group on NGN (2of 2)

Terms of Reference• Nomadicity architecture supporting

broadband xDSL access

• NGN activities on QoS Signalling

• IP QoS Signalling requirements

• Authentication

• Security

ITU-TITU-T

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For more information please visit our web site http://www.itu.int:

SSG web page

http://www.itu.int/ITU-T/ssg/index.html and IMT-2000 web pages: 1. Network aspects

http://www.itu.int/ITU-T/imt-2000/network.html2. Radio aspects

http://www.itu.int/ITU-R/study-groups/rsg8/rwp8f/index.asp

NGN Project: http://www.itu.int/ITU-T/studygroups/com13/ngn2004/

index.html Focus Group: http://www.itu.int/ITU-T/ngn/fgngn/index.html

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ITU-TITU-T Thank you for your attention!Thank you for your attention!