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• IMT-2000 Radio Access Standards• Evolving Capabilities• Evolving System Relationships• Coverage Environments• Variety of Access Networks• Radio Access Phases• Development Framework• Technology Trends• Spectrum Aspects• R&D Activities
Contents
• Standards driven by market, technology & regulatory opportunities & segments
• Extensive use of references to detailed information held by “external Recognized Organizations”
• Many of these standards are already being enhanced
• A reminder …..
IMT-2000 Radio Access Standards
StandardsDevelopmentOrganizations
Consortium&
Partnerships
CCSA
Forums
ITUMembership
ITURecommendations
IMT-2000 Standards Development
• Goal: anytime, anywhere, anyone – the deployment of IMT-2000 systems started in year 2000
• Systems Beyond IMT-2000 capabilities, which extend and enhance IMT-2000, are expected to include:
• Higher data rates• Improved roaming• True inter-system mobility management
• Greater flexibility to support many different types of services simultaneously (example: symmetrical, asymmetrical & unidirectional services)
Goal
• IMT-2000 original minimum requirements for radio technology evaluation:
• 144 kbit/s for vehicular high speed• 384 kbit/s for medium speed, and• 2048 kbit/s for indoor and low speed
• Currently the standard supports up to 10 Mbit/s, and further enhancements are being developed, possibly up to 30 Mbit/s by 2005
• Research targets for systems beyond IMT-2000 for deployment after 2010:
• 100 Mbit/s for high mobility• 1Gbit/s for low mobility
Evolving Capabilities
• Along with the future development of IMT-2000 and systems beyond IMT-2000, relationships will continue to develop between different communications and radio access systems. Ex:
•Wireless personal area networks (WPANs)•Local area networks (LANs and WLANs)•Digital broadcast•Fixed wireless access
• Systems will increasingly be designed as a combination of different access technologies
• Will provide a common and flexible service platform for different services and applications
• Key driver for this convergence is the increasing prevalence of IP-based applications
Evolving Relationships
Fusion
Recommendation ITU-R M.1645
"Systems beyond IMT‑2000 should be realized by the functional fusion of existing, enhanced and newly developed elements of IMT-2000, nomadic wireless access systems and other wireless systems with high commonality and seamless interworking and interoperability"
Personal Area Wide AreaPersonal AreaPersonal Area
Immediate Area
Wide AreaWide Area
Domains
IMT-2000 Coverage Environments
Variety of Access Networks for Systems Beyond IMT-2000
IMT-2000
WLANtype
Cellular2nd gen.
Short RangeConnectivity
WirelinexDSL
otherentities
DigitalBroadcast
download channel
New RadioInterface
IMT-2000
WLANtype
Cellular2nd gen.
Short RangeConnectivity
WirelinexDSL
otherentities
DigitalBroadcast
download channel
New RadioInterface
IP basedCore Network
Services andapplications
IMT-2000
WLANtype
Cellular2nd gen.
Short RangeConnectivity
WirelinexDSL
otherentities
DigitalBroadcast
download channel
New RadioInterface
IMT-2000
WLANtype
Cellular2nd gen.
Short RangeConnectivity
WirelinexDSL
otherentities
DigitalBroadcast
download channel
New RadioInterface
Packet basedCore Network
Services andapplications
IMT-2000
WLANtype
Cellular2nd gen.
Short RangeConnectivity
WirelinexDSL
otherentities
DigitalBroadcast
download channel
New RadioInterface
IMT-2000
WLANtype
Cellular2nd gen.
Short RangeConnectivity
WirelinexDSL
otherentities
DigitalBroadcast
download channel
New RadioInterface
IP basedCore Network
Services andapplications
IMT-2000
WLANtype
Cellular2nd gen.
Short RangeConnectivity
WirelinexDSL
otherentities
DigitalBroadcast
download channel
New RadioInterface
IMT-2000
WLANtype
Cellular2nd gen.
Short RangeConnectivity
WirelinexDSL
otherentities
DigitalBroadcast
download channel
New RadioInterface
Packet basedCore Network
Services andapplications
New radio interface(s)Research Goals:-100 Mbit/s full mobility-1 Gbit/s low mobility
Radio Access - Three Main Phases
2001 2010
Enhancing IMT-2000 i.e. “fast packet” up to 10 Mbit/s, 30 Mbit/s by 2005 ?
Relationship with other radio systems e.g. Digital broadcast, RLAN, etc.
New radio interface(s) i.e. research target 100 – 1000 Mbit/s (full to low mobility)
Framework for Development (‘The Van’)
Interconnection
IMT-2000
Mobility
Low
High
1 10 100 1000Peak useful data rate (Mbit/s)
EnhancedIMT-2000
Enhancement
IMT-2000
Mobility
Low
High
1 10 100 1000
Area Wireless Access
EnhancedIMT-2000
Enhancement
Digital Broadcast SystemsNomadic / Local Area Access Systems
New Nomadic / Local
Systems beyond IMT-2000 will encompass
the capabilities of previous systems
New capabilities of systems
beyond
Dashed line indicates that the exact data rates associated with systems beyond
IMT-2000 are not yet determined
New Mobile Access
• Significant technology trends need to be considered in defining the framework and objectives for systems beyond IMT-2000
• R&D should consider these trends & provide guidance on their applicability or influence to systems beyond IMT-2000:
• System-related technologies, example:• VoIP• Seamless mobility• Security & privacy
• Access network & radio interface, including• Modulation and coding schemes• Multiple access schemes• Software defined radio & reconfigurable systems• Adaptive radio interface• New antenna concepts & technologies
Technology Trends
• Trends continued:
• Utilization of spectrum•New techniques to increase spectrum utilization & efficiency, and to allow sharing of spectrum between users (ex. Adaptive antennas, MIMO, adaptive dynamic channel assignment)
• Mobile terminal, example technologies:• Man-machine interfaces• Software defined radio & multi-mode terminals• RF MEMS• Battery technology
• Applications•Speech & video streaming•APIs•Data coding & compression techniques
Technology Trends
Spectrum
• Need to plan use of spectrum already identified• Recommendation ITU-R M.1036 806-960, 1710-2025, 2110-2200 and 2500-2690 MHz• Including new methods for reuse and sharing of spectrum; and new technologies for efficient use of spectrum
• WRC-07 agenda item to address future requirements• Recommendation ITU-R M.1645• Resolution 802 (WRC‑03)• Resolution 228 (Rev.WRC-03)
2007 World Radiocommunication Conference
Agenda item 1.4
“to consider frequency-related matters for the future development of IMT‑2000 and systems beyond IMT‑2000, taking into account the results of ITU‑R studies in accordance with Resolution 228 (Rev.WRC‑03)”
Resolution 802 (WRC‑03)
resolves
1 to further study technical and operational issues …;
2 to report to WRC‑07 on the spectrum requirements and potential frequency ranges …;
3 to conduct regulatory and technical studies on the usage of frequencies below those identified for IMT-2000 …;
4 to take into consideration the particular needs of developing countries including use of the satellite component of IMT‑2000 …;
5 to include sharing and compatibility studies with services already having allocations in potential spectrum …;
6 that WRC‑07 should consider frequency-related matters for the future development of IMT‑2000 and systems beyond IMT‑2000 …,
Resolution 228 (Rev.WRC-03)
• In analysing the spectrum implications of the future development of IMT-2000 and systems beyond IMT-2000, many issues must be addressed, including:
• Traffic projections & requirements• Service & application requirements• Spectrum efficiency• Radio transmission characteristics• Global roaming requirements & harmonized use of spectrum• Technical solutions to facilitate global roaming• Techniques of dynamic spectrum sharing• Sharing and compatibility analysis• Evolution of IMT-2000 systems
Spectrum Implications
The Plan
2000 2003 2006 2009 2012 20152000 2003 2006 2009 2012 20152000 2003 2006 2009 2012 20152000 2003 2006 2009 2012 2015
Other radio systems Evolution / Integration with other radio systems
IMT-2000 and future
development
Systems Deployment
Spectrum Implementation
Enhancements and related development of standards
Indicates that the exact starting point is not yet fixed
Possible spectrum identification at the WRC-07
Possible wide deployment around the year 2015 in some countries
Systems Deployment
Spectrum Implementation
New elements to offer capabilities
of systems beyond IMT-
2000Framework Requirement
sStandardizat
ion
Now WRC-07
Rec. ITU-R M.1645:
• “Research, on a global basis, be undertaken to address the framework detailed in this Recommendation and into a potential new wireless access technique(s) for the terrestrial component”
• “Research on the specifications for the future development of IMT-2000 and systems beyond IMT-2000 consider how these systems may relate to other radio technologies and systems and how all systems will continue to evolve”
• “New technologies and technology trends be studied”
Research & Development
• Research forums and other external organizations are encouraged to focus especially on:
• Radio interface(s) and their interoperability• Access network related issues• Spectrum related issues• Traffic characteristics• User estimations
• Many organizations currently involved in R&D of systems beyond IMT-2000 or B3G, including:
• WWRF – Wireless World Research Forum• NGMC – Next Generation Mobile Communication• mITF – mobile IT Forum• CCSA – China Communications Standards Association
External R&D
• Flexibility is “designed in” from the outset
• Enhancements already being standardized and will evolve considerably over next 10-15 years – open and market led
• Relationship with other radio systems will take place on a market led basis – regulatory considerations
• New radio interface(s) are expected to be required sometime between 2010-2015
• Spectrum aspects will be considered at WRC-07
• Global cooperation of R&D fora encouraged
Summary
