ITU Development Forum

1
For the last 25 years, ITU has been coordinating
the development of a global broadband multimedia
international mobile telecommunication system,
known as IMT. Since 2000, the world has seen the
introduction of the first family of standards
derived from the IMT concept IMT-2000 (commonly
referred to as 3G). 3G is now widely deployed and
being rapidly enhanced. IMT-Advanced provides
a global platform on which to build the next
generations of mobile services - fast data
access, unified messaging and broadband
multimedia - in the form of exciting new
interactive services and applications.
2
What is IMT-Advanced?

• IMT-Advanced systems are mobile systems that
  include new capabilities that go beyond those of
  IMT-2000. They will
• provide access to a wide range of
  telecommunication services including advanced
  mobile services, supported by mobile and fixed
  networks, which are increasingly packet-based.
• support low to high mobility applications and a
  wide range of data rates in accordance with user
  and service demands in multiple user
  environments.
• provide for high quality multimedia applications
  within a wide range of services and platforms,
  providing a significant improvement in
  performance and quality of service.

3
Key features

• a high degree of commonality of functionality
  worldwide while retaining the flexibility to
  support a wide range of services and applications
  in a cost efficient manner
• compatibility of services within IMT and with
  fixed networks
• capability of interworking with other radio
  access systems
• high quality mobile services
• user equipment suitable for worldwide use
• user-friendly applications, services and
  equipment
• worldwide roaming capability and,
• enhanced peak data rates to support advanced
  services and applications (research target 100
  Mbit/s for high and 1 Gbit/s for low mobility).

4
Capabilities
IMT-Advanced will encompass the capabilities of
previous systems
Mobility
Mobility
New capabilities of IMT-Advanced
High
High
New Mobile Access
Enhanced
Enhanced
IMT
-
2000
IMT
-
2000
IMT
-
2000
IMT
-
2000
Enhancement
Enhancement
New Nomadic / Local
Low
Low
Area Wireless Access
1
10
100
1000
1
10
100
1000
Peak useful data rate (Mbit/s)
Interconnection
Digital Broadcast Systems
Nomadic / Local Area Access Systems
5
Resolution ITU-R 57

• The work on IMT-Advanced is guided by Resolution
  ITU-R 57, which was approved by the
  Radiocommunication Assembly in 2007.
• Resolution ITU-R 57 on the Principles for the
  process of development of IMT-Advanced outlines
  the essential criteria and principles which will
  be used in the process of developing the
  Recommendations and Reports for IMT-Advanced,
  including Recommendation(s) for the radio
  interface specifications.

6
The IMT-Advanced Process
Vision Rec ITU-R M.1645
Radio Framework Core Specifications
Market/ Services view Technology view Spectrum
view Name
Proposals, Evaluation, Consensus Building
Spectrum identification Process definition Open
invitation for proposals
2002-2003
2005-2007
2006-2008
2008-2010
2010-2011
Q. 229-2/52000-2003-2008
Setting the stage for the future Vision,
spectrum, and technology views
Defining the technology
7
Schedule
2008
2008
2009
2009
2007
2007
2010
2010
2011
2011
WP8F
WP5D
1
2
3
4
5
6
21
22
7
8
9
10
Invitation for proposals
PROPOSALS
PROPOSALS
Add1
Add2
5/LCCE/2
Services framework
EVALUATION Revise proposals
Preliminary EVALUATION
Rec ITU-R M.1822
CONSENSUS BUILDING
Technical requirements
inside outside of ITU revise proposals
/
Rep ITU-R M.2134
Evaluation criteria and methodology
Rep ITU-R M.2135
Framework and key characteristics
Rec ITU-R M.IMT.RADIO
Detailed specifications of the radio interfaces
Rec ITU-R M.IMT.RSPEC
8
Decision

• LTE-Advanced and WirelessMAN-Advanced
  technologies were each determined to have
  successfully met all of the criteria established
  by ITU-R for the first release of IMT-Advanced.
• LTE-Advanced is developed by 3GPP as LTE Release
  10 and Beyond (LTE-Advanced).
• WirelessMAN-Advanced is developed by IEEE as the
  WirelessMAN-Advanced specification incorporated
  in IEEE Std 802.16 beginning with approval of
  IEEE Std 802.16m.
• Full details of the submissions and evaluation
  process are contained in the recently Approved
  Report ITU-R M.2198
• The detailed technical specifications of these
  radio interfaces will be contained in
  Recommendation ITU-R M.RSPEC to be finalized in
  2011.

9
http//www.itu.int/ITU-R/go/rsg5-imt-advanced
10
IMT Evolution
1985
WCDMA
HSPA
CDMA2000
LTE
HSPA
EV-DO
IMT-Advanced is the next generation set of
standards in the International Mobile
Telecommunications (IMT) framework for global
wireless broadband communications.
TD-SCDMA
HSDPA
EDGE (UWC-136)
EDGE Evolution
WiMAX
IMT-2000
Following a detailed evaluation against stringent
technical and operational criteria, ITU has
determined that LTE-Advanced and
WirelessMAN-Advanced should be accorded the
official designation of IMT-Advanced. The
detailed specifications of IMT-Advanced
technologies will be provided in a new ITU-R
Recommendation expected in early 2012.
3G
CDMA-DS, CDMA-MC CDMA-TDD TDMA-SC FDMA-TDMA OFDMA-
TDD-WMAN
IMT-Advanced
IMT-2020?
4G
It is recognized that the term 4G, while
undefined, is also being applied to the
forerunners of these technologies LTE and WiMax
and to other evolved 3G technologies, providing
a substantial level of improvement in performance
and capabilities with respect to the initial
third generation systems now deployed.
LTE-Advanced WirelessMAN-Advanced
2 Mbit/s 1 Gbit/s
11
Future spectrum needs

• While voice traffic on mobile networks is growing
  at a relatively constant rate, there is a very
  rapid increase in the volume of data traffic.
• This increase is being accelerated by the
  introduction of a growing array of advanced
  multimedia devices and applications.
• The overall amount of spectrum identified for IMT
  does not meet the amount spectrum estimated as
  being required by 2020 in the ITU studies. Also,
  in some cases harmonization of the bands on a
  global basis has not been achieved.

12
Next steps

• There is a long lead time involved in identifying
  suitable spectrum at the international level,
  making the spectrum available at the national
  level, and actual system deployment.
• Consequently undertook an Analysis and
  assessment of global broadband wireless services
  and marketplace for IMT.
• A key component of that assessment will be to
  review the original spectrum estimates to see
  whether those forecasts are now being realized or
  exceeded.
• Administrations took this information into
  account during the World Radiocommunication
  Conference 2012.

13
Joint Task Group 4-5-6-7(JTG 4-5-6-7)

• Resolution 232 (WRC-12)
• Use of the frequency band 694-790 MHz by the
  mobile, except aeronautical mobile, service in
  Region 1 and related studies
• resolves to allocate the frequency band
  694-790 MHz in Region 1 to the mobile, except
  aeronautical mobile, service on a co-primary
  basis with other services to which this band is
  allocated on a primary basis and to identify it
  for IMT the allocation is effective immediately
  after WRC-15.
• invites ITU-R to study the spectrum requirement
  for the mobile service and for the broadcasting
  service in this frequency band to study the
  channelling arrangements for the mobile service,
  adapted to the frequency band below 790 MHz, etc
• Resolution 233 (WRC-12)
• Studies on frequency-related matters on
  International Mobile Telecommunications and other
  terrestrial mobile broadband applications
• invites ITU-R to study additional spectrum
  requirements taking into account
• technical and operational characteristics of IMT
  systems
• the needs of developing countries

14
Conclusions

• ITU plays a leading role in establishing the
  standards and spectrum arrangements for the IMT
  global mobile broadband standards.
• It is now timely to review the spectrum
  requirements to realize global mobile broadbands
  vast potential to connect the world.
• This review is being addressed in the ITU-Rs
  Study Group and Conference activities and will be
  considered at the World Radiocommunication
  Conference 2015.