ITU-T Mobility, 3G and Beyond and
NGN
Tatiana Kurakova,
Telecommunication Standardization
Sector
Engineer
24 June 2004, Victoria Falls, Zimbabwe
Terminal mobility
 must carry a wireless terminal
 must be within radio coverage
ITU-T
Network
wireless
Personal mobility
 need not carry a
terminal
 must have a personal
number
Network
wireline
A View of Terminal Mobility Versus
Personal Mobility
2
Definitions
ITU-T
• 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.
3
Wireless Internet
ITU-T
Wireless Applications Growth
Data Subscriber Growth
400
350
300
250
200
150
100
50
Subscriber Growth
0
1998
693
614
533
Other
Digital
450
366
286
GSM
CDMA
2002
2005
Source: The Yankee Group, Nortel Networks
Data Traffic Growth
Data 70%
Data 4%
TDMA
1998 1999
2000 2001
2002 2003
Analog
Source: Strategis Group, World Cellular / PCS
Markets, May 1998.
Voice 30%
(“Other Digital” refers to PDC and PHS.)
Voice 96%
4
Group on IMT-2000 and Beyond
ITU-T
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
5
Questions under study (1 of 3)
ITU-T
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.
6
Questions under study (2 of 3)
ITU-T
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
7
Questions under study (3 of 3)
ITU-T
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
8
Stage 1
Services/Features
Service definition
ITU-T
Functional
architecture
Physical
architecture
Information
flows
Stage 2
Signaling
requirements
SDL diagrams
Interfaces
SDL – System Description Language
Stage 3
Protocol
specification
The three-stage process for interface specification
ITU-T Recommendations
developed by SSG (1 of 3)
ITU-T
 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
10
ITU-T Recommendations
developed by SSG (2 of 3)
ITU-T
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
11
ITU-T Recommendations
developed by SSG (3 of 3)
ITU-T
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
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convergence
Questions for further study
ITU-T
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
13
Foreseen deliverables (1 of 5)
ITU-T
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”
14
Foreseen deliverables (2 of 5)
2004:
ITU-T • 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
15
Foreseen deliverables (3 of 5)
ITU-T
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
16
Foreseen deliverables (4 of 5)
ITU-T
2005:
• Handbook on IMT-2000 deployment,
2nd edition, Core Network Aspects
• New Recommendation: Access network
interface requirements for utilizing IMT2000 radio access technologies as FWA
with existing public fixed networks
17
Foreseen deliverables (5 of 5)
2006:
ITU-T • 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
18
Mobility Management
ITU-T
• 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
19
Where ITU-T can add value in global
IMT-2000 and beyond standardization
ITU-T
• 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 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 IMT2000 family members for global roaming, seamless service
delivery
– provide interworking specifications if not done elsewhere
20
Envisaged Network Environment
Around the Year 2010 (1 of 2)
ITU-T
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
21
Envisaged Network Environment
Around the Year 2010 (2 of 2)
ITU-T
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
22
NGN in ITU-T
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-T NGN Project
ITU-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 (JRGNGN)
Joint Rapporteurs Group on
NGN (JRG-NGN)
ITU-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
25
What is NGN ?
ITU-T
• 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
The Transformed Network
ITU-T
•
•
•
•
•
•
Always on
Anytime, anywhere and in any form
Voice and multimedia
Self service, intuitive
Simple for the end user
Secure, trusted and reliable
27
When is NGN coming in ?
• Some (pre-NGN) pieces are already there:
ITU-T
– 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
28
How will NGN be developed and deployed ?
• Replacing progressively legacy PSTN elements/areas
ITU-T
– 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 Fiberbased 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
Recommended follow-up Actions
ITU-T
• 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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Focus Group on NGN (1 of 2)
ITU-T
•
•
•
•
•
•
•
•
•
•
•
•
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 31
Focus Group on NGN (2of 2)
ITU-T
Terms of Reference
• Nomadicity architecture supporting
broadband xDSL access
• NGN activities on QoS Signalling
• IP QoS Signalling requirements
• Authentication
• Security
32
For more information please visit
our web site http://www.itu.int:
ITU-T
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.html
2. Radio aspects
http://www.itu.int/ITU-R/studygroups/rsg8/rwp8f/index.asp
NGN Project:
http://www.itu.int/ITUT/studygroups/com13/ngn2004/index.html
Focus Group:
http://www.itu.int/ITU-T/ngn/fgngn/index.html 33
ITU-T
Thank you for your attention!
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