Transcript IMT-2000 and Beyond

ITU-T
ITU-T technical results in IMT-2000
Studies: Mobile Network Evolution
Greg Jones,
ITU-T
[email protected]
June, 2002, Lisbon
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
A View of Terminal Mobility Versus
Personal Mobility
wireline
2
ITU-T IMT-2000 Specifications
Structure
ITU-T
Framework for
IMT-2000 networks
Q.1701
Network functional
model
Framework
Q.1711
Information flows
Q.1721
Q.FSR
Radio interface technology
independent requirements
Requirements
RAN-CN
N/A for CS-1
Protocols
Protocols
3
ITU-T Recommendations
could be found at http://www.itu.int
ITU-T
Q.1741.1 (04/02) – IMT-2000 References to
Release 1999 of GSM evolved UMTS Core
Network with UTRAN Access Network
Q.1701 (03/99) - Framework for IMT-2000
Networks
Q.1711 (03/99) - Network Functional Model
for IMT-2000
Q.1721 (06/00) - Information Flows for
IMT-2000 CS-1
4
ITU-T Recommendations
could be found at http://www.itu.int
ITU-T
Q.1731 (06/00) - Radio Technology
Independent Requirements for IMT-2000
Layer 2 Radio Interface
 Q.1751(06/00) - Internetwork Signalling
Requirements for IMT-2000 Capability Set 1
Supplement 30 (12/00) to ITU-T
Recommendation Q.1701 - Framework for
IMT-2000 Networks - Roadmap to IMT-2000
Recommendations, Standards and Technical
Specifications
5
ITU-T Recommendations
could be found at http://www.itu.int
ITU-T
E.164/I.331 (05/97) - The international public
telecommunication numbering plan
E.190 (05/97) - Principles and responsibilities
for the management, assignment and
reclamation of E-Series international
numbering resources
E.212 (11/98) - The international identification
plan for mobile terminals and mobile users
H.323 (11/00) – Packed-based multimedia
communications systems
6
ITU-T Recommendations
could be found at http://www.itu.int
ITU-T
 Annex H to Rec. H.323 (2001) – Users, terminal
and service mobility in H.323
 Annex I to Rec. H.323 (2001) – Terminal mobility
in H.323 (Error prone channels)
 Annex E to Rec. H.246 (11/00) – Use of H.323
terminals in the PLMN
 Recommendation G.729 and its Annexes (Rev.) –
Coding of speech at 8kbit/s using CS-ACELP
(conjugate – structure, algebraic-code- excited
liner prediction) (03/96)
 H.323 (V4 –02/00) – Packet based multi-media
communication systems
7
ITU-T Recommendations
could be found at http://www.itu.int
ITU-T
Recommendation H.450 series – Generic
functional protocol for the support of
supplementary services in H.323
H.245 (V6 - 02/00) – control protocol for
multimedia communication
H.332 (09/98) – Multimedia terminal for
security Internet-based H.323 conferences
H.235 (V2 - 11/00) – Security and
encryption for H-series (H.323 and H.245
based) multimedia terminals
8
ITU-T Recommendations
could be found at http://www.itu.int
ITU-T
ITU-T
REC
 H.248 (06/00) – Gateway control protocol
 M.3200 (04/97) - TMN management services
and telecommunications managed areas:
overview
 M.3210(IMT-SP) - Configuration
Management Functional
Requirements:Service Provisioning for IMT2000 - target 2003
 M.3210.1(01/01) – TMN Management
Services for IMT-2000 Security Management
9
ITU-T Recommendations
could be found at http://www.itu.int
ITU-T
 X.509 ISO/IEC 9594-8 (03/00) – Information
Technology – Open Systems Interconnection –
The Directory: Public-Key and Attribute
Certificate Frameworks
 X.841 ISO/IEC 15816 (10/00) - Information
Technology – Security Techniques – Security
Information Objects
 X.842 ISO/IEC TR 14516 (10/00) - Information
Technology – Security Techniques – Guidelines
on the Use and Management of Trusted Third
Party Services (TTP)
 X.843 ISO/IEC 15945 (10/00) - Information
Technology – Security Techniques –
Specification of TTP Services to Support the
Application of Digital Signatures
10
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
11
ITU-T
IMT-2000
Family
Family
Member
B
Family
Member
A
Family
Member
C
IMT-2000 Family-of-systems concept.
12
to be specified
in future CSs
ITU-T
UIM
MT
UIM-MT
interface
RAN
MT-RAN
interface
UIM – User Identity Module
MT – Mobile Terminal
RAN – Radio Access Network
CNs of other IMT-2000
family members
CN
CN
RAN-CN
interface
NNI
CN – Core Network
NNI or CN–CN – Network-toNetwork Interface
Physical interfaces of an IMT-2000 family member
system
13
ITU-T
List of Interfaces
need to be standardized in ITU
NNI
MT-RAN interface
UIM-MT interface
RAN-CN interface
14
CNc
ITU-T
Family Member C
IWFc
NNI
Family Member A
CNa
IWFa
NNI
Family Member B
NNI IWFb CNb
IWF – Interworking Function
Common NNI in the IMT-2000 Family Member interconnection
model
RTTs
ITU-T
Flexible connection between radio modules
and core networks based on operator needs
Evolved
GSM (MAP)
CN
Evolved
ANSI-41 CN
ANSI-41
UWC-136 CN
IP-based CN
Future CN
Common NNI
Application of IMT-2000 Family Member concept
16
SSG - IMT-2000 and Beyond
ITU-T
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
– 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
17
Why is the SSG-IMT special?
ITU-T
• 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
18
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%
19
A Mobile Revolution
Fixed Lines vs. Mobile Users, worldwide, Million
1'400
Mobile Users
1'200
Fixed Lines
1'000
800
600
400
200
0
1993
1995
1997
Source: ITU World Telecommunication Indicators Database.
1999
2001
2003
Special Study Group on IMT2000 and Beyond
ITU-T
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
21
Special Study Group on IMT2000 and Beyond
ITU-T
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 IMT2000
• Collaborate with ITU-R 8F (radio) and 8D (satellite)
• Strong cooperative relations and complementary programs with
SDOs, 3GPPs
• Develop and approve Recommendations
• Make use of provisional working procedures specific to this SSG
22
Questions under study (1 of 3)
ITU-T
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 (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.
Q.3/SSG Identification of existing and evolving IMT2000 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.
23
Questions under study (2 of 3)
ITU-T
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
2000
Preparation of a Handbook on IMT-
work with the D and R sectors, coordinate T sector input
for a handbook on IMT-2000 to assist developed and
developing countries
24
Questions under study (3 of 3)
ITU-T
Q.6/SSG
Systems
Harmonization of evolving IMT-2000
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 IPbased services)
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 wireline access technologies to support
current and evolving IMT-2000 capabilities
Q.8/SSG
Special Study Group working procedures
25
Technological and System Context
ITU-T
S-UMTS
Satellite/HAPS
Wireless
Information
Society
4th Generation
Satellite
Broadband
Broadband
W-LAN
Bluetooth
Personal
IR
Area Networks
DVB-S
DVB-T
DAB
Broadcasting
UMTS ++
UMTS
GPRS/EDGE
GSM
Cellular
Broadband
WFA
MBS 60
MWS
MBS 40
Quasi-Cellular
Indoor
Body LANs
Local Area Networks
xMDS
Wireless Local Loop
26
Characteristics of the 4th generation?
ITU-T
•
•
•
•
•
•
•
•
New network types ?
New frequency bands?
New air interfaces?
New terminals/appliances?
Different network management?
New services?
Better cost/performance ratios?
Higher reliability?
Perhaps all, but only where the business case
justifies the investment !
27
Network Architecture
ITU-T
Other Networks
Location
Database
BTS
BSC
IP Backbone
GSM BSS
Supports:
SGSN
UTRAN
Node B
Node B
- QoS for realtime services
- Multicast
- Handover
IP WAN
RNC
SGSN
Vertical
Handover
Radio Cells
One Subnet
Horizontal
Handover
Roaming
Inter-Network “Handover” is a must
28
Technology perspective of 4th
generation
ITU-T
4th generation wireless network and terminal reconfigurability (scalable and flexible self-organised),
including the adaptation of resource allocation to cope with
varying traffic load, channel conditions and service
environments.
Integration of fixed/mobile/broadcasting networks and rules
for distribution and decentralized control of functional
entities. Protocols that permit the network to adapt
dynamically to changing channel conditions, that allow the
coexistence of low and high-rate users, hand-off of high-datarate users between base stations, congestion-control
algorithms that are cognizant of and adjust to changing
channel conditions etc. Development of system concepts for
digital broadband millimeter wave (up to 200GHz ) capable
of delivering bit rates beyond 155 Mbits/s.
29
Towards life in 2010:
ITU-T
• 90% of traffic on mobile networks will be data
• Domestic demand reaches 100Mbits/s per home
• Cellular phone locations used in traffic
management systems
• All new cars fitted with automated distress
system
• 90% of calls will be tetherless
• 1 Terabit memory chip
• Chips with 10 billion transistors
• Household access by facial recognition
• In-store positioning systems enable personalised
guides
• Voice interface for home appliances
30
Expectation for 4G System:
ITU-T
•
high speed (vehicular: 2 Mbps, pedestrian/indoor:20
Mbits/s)
• next generation Internet support (IPv6, QoS, Mo-IP)
• high-capacity 5~10 times to 3G
• flexible for providing new services
• utilize higher frequencies (for example 3~8 GHz)
• lower system cost (1/10 of IMT2000?)
4th generation mobile systems will differ from IMT-2000.
System deployment history indicates that the generation
changes roughly 10 years step.
31
It is not only circuit switched voice
services!
ITU-T
It is
• the mobile component of the Information Society
• digital convergence of content, media, data and
telecom
• a multi-national, multi-sector system
• many different protocols (MPEG, WAP, IP, etc.)
• a wide range of terminals, products and services
It demands global roaming
• users want services available everywhere
• new services and products for competition and
innovation
32
Capability Set 1
ITU-T
 circuit and packet bearer capability up to 144 kb/s in
vehicular radio environment
 circuit and packet bearer capability up to 384 kb/s for
pedestrian radio environment
 circuit and packet bearer capability up to 2048 kb/s in indoor
office radio environment
 roaming among the IMT-2000 family of systems
 interworking with IP networks
 interworking with other fixed networks
 service portability and support of virtual home environment
 multimedia terminals and services
 emergency and priority calls
 geographic position/location service
 user authentication and ciphering
 support of UPT
33
Deliverables (1 of 8)
ITU-T 2002:
• New Rec. Q.1702 (Q.LTVN) - Long-Term
Vision of Network Aspects for Systems
Beyond IMT-2000 - Q.1: ITU long-term
vision (focused around year 2010) on
systems beyond IMT-2000 for future mobile
service and network capabilities
requirements (currently under AAP Last
Call)
34
Deliverables (2 of 8)
ITU-T 2002:
• Handbook on IMT-2000 deployment,
Q.5
• New Rec. Q.SCFN, Q.1: Aspects of
service capability requirements,
including VHE
35
Deliverables (3 of 8)
ITU-T
2002:
• New Rec. Q.1741.2, Q.3: “IMT-2000
References to Release 1999 of GSM
evolved UMTS core network with
UTRAN access network” (Release 2)
• New Rec. Q.1742.1, Q.3: “ANSI-41
evolved core network with cdma2000
access network”
36
Deliverables (4 of 8)
ITU-T
2003:
• Tech. Report, Q.2: New protocols for
Common Mobility Management and Global
Roaming
• New Rec. Q.1743.1, Q.3: “ANSI-41/GPRS
evolved core network with UWC-136 access
network”
37
Deliverables (5 of 8)
ITU-T
2003:
• New type of output, Q.6: Degree of
harmonisation of existing IMT-2000 systems
• New type of output , Q.6: Harmonisation
issues relating to existing IMT-2000 systems
• New type of output , Q.6: Harmonisation
proposals for evolving IMT-2000 systems
• New type of output, Q.7: Principles and
requirements for convergence of public fixed
networks and IMT-2000 network
38
Deliverables (6 of 8)
ITU-T
2003:
• New Rec. Q.FNAB, Q.1: Long-term high-level
network architecture for beyond IMT-2000 systems
• New Rec. Q.NCRB, Q.1: Network capabilities
requirements
• New Rec., Q.2: Requirements for new Mobility
Management protocols to support Global Roaming in
IMT-2000 and beyond
• New Rec., Q.7: Network architecture and interface
requirements facilitating evolution of existing public
fixed networks towards converged core network,
supporting IMT-2000 capabilities
• New Rec., Q.7: Access network interface requirements
for utilizing IMT-2000 radio access technologies as
FWA with existing public fixed networks
39
Deliverables (7 of 8)
ITU-T
2004:
• New Rec., Q.4: Functions required to
interwork between IMT-2000 family
members developed by SDOs
• New Rec., Q.4: Functions required to
interwork between IMT-2000 family
members and PSTN/ISDN
• New Rec., Q.4: Functions required to
interwork between IMT-2000 family
members and Packet Data Networks
40
Deliverables (8 of 8)
ITU-T
2004:
• Tech. Report, Q.2: Identification of the
mobility management features and studies the
protocol to interoperability, transport layers
and mobility management
• New Rec., Q.7: 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
41
SSG Meetings
ITU-T • May 21- 27, 2002, Ottawa, Canada
followed by one-day seminar on IMT2000 and Systems Beyond
• November 4 - 8, 2002, Geneva,
Switzerland
• March 3 – 7, 2003, Geneva,
Switzerland
42
Envisaged Network Environment
Around the Year 2010
ITU-T
• High-speed data connection is a norm
in accessing multimedia services and
Internet services
• The core network is fully IP-based
• Software radio technology becomes a
main element in the wireless
infrastructure
• Digital TV with data service capability
• Mobility management will be
supporting higher speed objects such as
vehicles
43
ITU-T
Phases and expected timelines for future
development of IMT-2000 and systems
beyond
Systems Deployment
Spectrum Identification
and Implementation
Systems
Beyond
Vision
Definition
Other Radio
Systems
Standards
Requirements Standards
Definition
Development Enhancements
Evolution/Integration
with Other Radio Systems
Systems Deployment
IMT-2000
and
Future
Development
Spectrum Identification
and Implementation
Standards Enhancements
2001
2003
2006
2010
2020+
44
Defining the Vision: Capabilities
of IMT-2000 and Systems Beyond
Systems beyond IMT-2000
Mobility
ITU-T
High
Medium
IMT-2000
New Elements of
Systems Beyond
IMT-2000
Enhanced Mobile
IMT-2000 Access
Enhancement
Digital Broadcast
Nomadic / Local area
wireless access
Low
1
10
100
1000
Peak Useful Data Rate (Mb/s)
Notes:
1. Denotes interconnection between systems via networks or the like which allows flexible use in
environments without making users aware of constituent systems.
2. Light gray color indicates existing capabilities, medium gray color indicated enhancements to
IMT-2000, and the darker gray color indicates new capabilities of Systems Beyond IMT-2000.
3. The degree of mobility as used in this figure is described as follows: Low mobility covers
pedestrian speed (~3 km/h); medium mobility covers limited speed as for cars within cities (~5060 km/h); high mobility covers high speed as on highways or with fast trains (60 km/h to ~250
km/h, or even more).
Illustration of Capabilities of IMT-2000 and Systems Beyond
45
Data rates for the new elements of
the system beyond IMT-2000
ITU-T
•up to 100 Mb/s for the mobile access
and
•up to 1 Gb/s for the nomadic/local
area wireless access
46
Generic Network Architecture of
IMT-2000
ITU-T
47
Difficulties towards the single Network
Architecture
ITU-T • influences of competition
• existing networks
• depreciating equipment
• time frames for equipment
installation
• the mix of services provided
48
Layer Architecture of future network
scenarios
ITU-T
ATM Core Network
Network,
Transport,
etc.
Data
Services
IP
Constant
Bit Rate
Services
ATM/IP Core Network
IP Core Network
All Services
IP
All Services
IP
Data Link
ATM
ATM
PPP
Physical
Synchronous
Transport Networks
Synchronous
Transport Networks
Synchronous
Transport Networks
Fibre/WDM
Fibre/WDM
Fibre/WDM
ATM
IP
PPP
Asynchronous Transfer Mode
Internet Protocol
Point-to-Point Protocol
SDH
SONET
WDM
Synchronous Digital Hierarchy
Synchronous Optical NETwork
Wavelength Division Multiplexing
49
ITU-T
Three scenarios for core network
in long-term
• ATM Core Network
• ATM/IP Core Network
• IP Core Network
50
ITU-T
For more information please visit
out 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/imt2000/index.html
2. Radio aspects
http://www.imt-2000.org/portal/index.asp
51
ITU-T
Thank you for your attention!