Committed to Connecting the World
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.
Committed to Connecting the World
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.
Committed to Connecting the World
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).
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Capabilities
IMT-Advanced will
encompass the capabilities
of previous systems
Mobility
New capabilities of
IMT-Advanced
High
IMT-2000
IMT-2000
Enhanced
Enhanced
IMT-2000
IMT-2000
New Mobile
Access
Enhancement t
Enhancemen
New Nomadic / Local
Area Wireless Access
Low
1
Interconnection
10
100
Peak useful data rate (Mbit/s)
Nomadic / Local Area Access Systems
1000
Digital Broadcast Systems
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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 IMTAdvanced, including Recommendation(s) for
the radio interface specifications.
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The IMT-Advanced Process
Vision
Rec ITU-R M.1645
2002-2003
Market/
Services view
Technology view
Spectrum view
Name
2005-2007
Spectrum
identification
Process definition
Open invitation
for proposals
2006-2008
Setting the stage for the future:
Vision, spectrum, and technology views
Proposals,
Evaluation,
&
Consensus
Building
2008-2010
Radio
Framework
&
Core
Specifications
2010-2011
Defining the
technology
Schedule
2007
WP8F
#21
#22
Invitation for
proposals
5/LCCE/2
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2008
#1
#2
2009
#3
Add#1 Add#2
Services
framework
Rec ITU-R M.1822
Technical requirements
Rep ITU-R M.2134
#4
WP5D
#5
#6
2010
#7
#8
2011
#9
#10
PROPOSALS
PROPOSALS
Preliminary
EVALUATION
EVALUATION
Revise proposals
CONSENSUS BUILDING
inside & outside of ITU
/ – revise proposals
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]
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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 IMTAdvanced.
 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.
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http://www.itu.int/ITU-R/go/rsg5-imt-advanced
IMT Evolution
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1985
WCDMA
CDMA2000 HSPA
LTE
HSPA+
EV-DO
TD-SCDMA
HSDPA
EDGE (UWC-136)
WiMAX
IMT-2000
IMT-Advanced is the next generation set of standards in the
International Mobile Telecommunications (IMT) framework for
global wireless broadband communications.
EDGE Evolution
Following a detailed evaluation against stringent technical
and operational criteria, ITU has determined that “LTEAdvanced” 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
OFDMATDD-WMAN
2 Mbit/s
IMT-Advanced
4G
LTE-Advanced
WirelessMAN-Advanced
1 Gbit/s
IMT-2020?
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.
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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.
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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.
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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
…
13
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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
broadband’s vast potential to connect the
world.
 This review is being addressed in the ITU-R’s
Study Group and Conference activities and will
be considered at the World
Radiocommunication Conference 2015.