ITU-T technical results in IMT-2000 Studies: Mobile Network Evolution

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ITU-T technical results in IMT-2000 Studies
Mobile Network Evolution

• Greg Jones,
• ITU-T
• greg.jones_at_itu.int
• June, 2002, Lisbon

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A View of Terminal Mobility Versus Personal
Mobility

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

Network wireless

• Personal mobility
• need not carry a terminal
• must have a personal number

Network wireline
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ITU-T Recommendationscould be found at
http//www.itu.int

• 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

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ITU-T Recommendationscould be found at
http//www.itu.int

• 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

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ITU-T Recommendationscould be found at
http//www.itu.int

• 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

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ITU-T Recommendationscould be found at
http//www.itu.int

• 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

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ITU-T Recommendationscould be found at
http//www.itu.int

• 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

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ITU-T Recommendationscould be found at
http//www.itu.int
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 RequirementsService Provisioning for
  IMT-2000 - target 2003
• M.3210.1(01/01) TMN Management Services for
  IMT-2000 Security Management

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ITU-T Recommendationscould be found at
http//www.itu.int

• 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

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The three-stage process for interface
specification
Services/Features
Stage 1 Service definition
Physical architecture
Functional architecture
Information flows
Stage 2 Signaling requirements
SDL diagrams
Stage 3 Protocol specification
Interfaces
SDL System Description Language
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IMT-2000 Family-of-systems concept.
IMT-2000 Family
Family Member B
Family Member A
Family Member C
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Physical interfaces of an IMT-2000 family member
system
CNs of other IMT-2000 family members
to be specified in future CSs
CN
UIM
MT
RAN
CN
UIM-MT interface
MT-RAN interface
RAN-CN interface
NNI
UIM User Identity Module MT Mobile
Terminal RAN Radio Access Network
CN Core Network NNI or CNCN Network-to-
Network Interface
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List of Interfacesneed to be standardized in ITU

• NNI
• MT-RAN interface
• UIM-MT interface
• RAN-CN interface

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Common NNI in the IMT-2000 Family Member
interconnection model
IWF Interworking Function
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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
• 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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Why is the SSG-IMT 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

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Wireless Internet
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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
1999
2001
2003
Source ITU World Telecommunication Indicators
Database.
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Special Study Group on IMT-2000 and
BeyondSummary 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

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Special Study Group on IMT-2000 and
BeyondSummary 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
• Develop and approve Recommendations
• Make use of provisional working procedures
  specific to this SSG

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Questions under study (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
  (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 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.

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Questions under study (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
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Questions under study (3 of 3)

• Q.6/SSG 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)
• 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

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Characteristics of the 4th generation?

• 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 !

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Technology perspective of 4th generation
4th generation wireless network and terminal
re-configurability (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/broadcas
ting 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-data-rate 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.
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Towards life in 2010

• 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

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Expectation for 4G System

• high speed (vehicular 2 Mbps,
  pedestrian/indoor20 Mbits/s)
• next generation Internet support (IPv6, QoS,
  Mo-IP)
• high-capacity 510 times to 3G
• flexible for providing new services
• utilize higher frequencies (for example 38 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.

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It is not only circuit switched voice services!
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
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Capability Set 1

• 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

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Deliverables (1 of 8)

• 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)

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Deliverables (2 of 8)

• 2002
• Handbook on IMT-2000 deployment, Q.5
• New Rec. Q.SCFN, Q.1 Aspects of service
  capability requirements, including VHE

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Deliverables (3 of 8)

• 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

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Deliverables (4 of 8)

• 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

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Deliverables (5 of 8)

• 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

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Deliverables (6 of 8)

• 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

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Deliverables (7 of 8)

• 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

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Deliverables (8 of 8)

• 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

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SSG Meetings

• May 21- 27, 2002, Ottawa, Canada
  followed by one-day seminar on IMT-2000 and
  Systems Beyond
• November 4 - 8, 2002, Geneva, Switzerland
• March 3 7, 2003, Geneva, Switzerland

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Envisaged Network Environment Around the Year 2010

• 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

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Phases and expected timelines for future
development of IMT-2000 and systems beyond
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Defining the Vision Capabilitiesof IMT-2000 and
Systems Beyond
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Data rates for the new elements of the system
beyond IMT-2000

• up to 100 Mb/s for the mobile access and
• up to 1 Gb/s for the nomadic/local area wireless
  access

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Generic Network Architecture of IMT-2000
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Difficulties towards the single Network
Architecture

• influences of competition
• existing networks
• depreciating equipment
• time frames for equipment installation
• the mix of services provided

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Layer Architecture of future network scenarios
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Three scenarios for core network in long-term

• ATM Core Network
• ATM/IP Core Network
• IP Core Network

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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/imt-2000/index.html
• 2. Radio aspects
• http//www.imt-2000.org/portal/index.asp

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Thank you for your attention!