3GPP Presentation on the LTE-Advanced as an IMT-Advanced Technology Solution pot

1
3GPP Presentation
on
the LTE-Advanced
as an
IMT-Advanced Technology Solution
(RP-080756)
ITU-R IMT-Advanced Workshop
7 October 2008
Seoul, Korea
2
3GPP
3GPP
–
–
ITU collaboration:
ITU collaboration:
a ten
a ten
-
-
year successful track record!
year successful track record!
3GPP has contributed to the ITU process toward IMT
since its foundation in 1998 and this cooperation
proved to be extremely successful.
With specific reference to IMT-Advanced, 3GPP has
actively supported the ITU activity since the early
stages of the work in both WP 8F and WP 5D, and
also at the previous workshop in Kyoto in 2007
where LTE was presented as a foundation for the

LTE-Advanced
3
Toward IMT
Toward IMT
-
-
Advanced:
Advanced:
As highlighted in the next slide, the ITU-R and 3GPP
timelines are well aligned.
In particular, 3GPP foresees:
An
An
“
“
Early Proposal
Early Proposal
”
”
submission
submission agreed at RAN #41 (9-
12 Sep 2008), for submission to WP 5D #3 (8-15 Oct 2008)
A
A
“
“
Complete Technology
Complete Technology
”
”

submission
submission to be agreed at
RAN #44 (26-29 May 2009), for submission to WP 5D #5
(planned for 10-17 June 2009)
A
A
“
“
Final
Final
”
”
submission
submission to incorporate updates, additional
specific details or feature additions, and the required self-
evaluation, to be agreed at RAN #45 (22-25 Sep 2009), for
submission to WP 5D #6 (planned for 13-20 Oct 2009)
Source: RP-080599
3/08 6/08
12/08 3/09 5/09 9/09 12/09 3/109/08
LTE-Advanced
SI Approved
3GPP LTE-
Advanced
Early
Submission to
ITU-R
Steps 1 & 2
Circular Letter & Development of Candidate RITs
3/08 to 10/09

IMT-Advanced
Evaluation
Group(s)
Formed
(notify ITU-R)
3GPP
Initiate
3GPP LTE-
Advanced
Self-Evaluation
3GPP LTE-
Advanced Final
Submission to
ITU-R including
Updated
Technical
Submission &
Required Self-
Evaluation
LTE-Advanced
Specifications
3GPP LTE-
Advanced
Complete
Technical
Submission to
ITU-R
Step 3
Submission
3/09 to 10/09

Step 4
Evaluations
1/09 to 6/10
3/08 6/08
10/09
10/09
6/10
3/09
ITU-R
Detailed Timelines for ITU-R Steps 1- 4
3/09
LTE-Advanced
Specifications
to ITU-R
~ Jan 2011
Evaluation of
ITU-R
Submissions
Eval
Reports
ITU-R Circular
Letter 5/LCCE/2
Process &
Timelines
ITU-R Circular
Letter Addendum
5/LCCE/2 +
Requirements
& Submission
Templates

Cutoff for
Evaluation Reports
to ITU-R
June 2010
INDUSTRY
RAN #41 RAN #42 RAN #43RAN #39 RAN #44RAN #40 RAN #45
WP 5D #1
WP 5D #2
WP 5D #4
WP 5D #8
WP 5D #6
WP 5D #4
WP 5D #6
RAN #47RAN #46
[~Release 10 ]
[~RAN #50 12/10]
6/09
WP 5D #5
10/08
WP 5D #3
4
Source: RP-080651
ITU-R
Evaluation
Criteria
3GPP work on ITU-R Step 2
Technology Development
3GPP work on ITU-R Step 3
Technology Submission
3GPP Q&A with

evaluation
groups
(as required)
5
The 3GPP
The 3GPP
“
“
Early Proposal
Early Proposal
”
”
The “Early Proposal” submission available at
WP 5D #3:
reinforces the relationship of the 3GPP work to IMT-
Advanced
confirms the 3GPP roadmap & workplan on LTE-
Advanced work
provides the initial 3GPP technology concept(s)
under discussion/development for LTE-Advanced
and as such it provides a starting point for the
education/information to evaluation groups
Source: RP-080763
6
LTE
LTE
-
-
Advanced
Advanced

Requirements and targets
Requirements and targets
Requirements and targets for LTE-Advanced
are captured in TR 36.913 - “3rd Generation
Partnership Project; Technical Specification Group
Radio Access Network; Requirements for Further
Advancements for E-UTRA (LTE-Advanced) ”, and are
based on the following concepts:
LTE-Advanced is an evolution of LTE
All relevant requirements of LTE are valid also for
LTE-Advanced
LTE-Advanced shall meet or exceed IMT-Advanced
requirements within the ITU-R time plan
Backward compatibility with E-UTRA/E-UTRAN
Source: TR 36.913 & RP-080599
7
LTE Advanced
LTE Advanced
Main technical features under discussion
Main technical features under discussion
Support of wider bandwidth:
Carrier aggregation, where two or more component
carriers, each with a bandwidth up to 20 MHz, are
aggregated, is considered for LTE-Advanced in order
to support downlink transmission bandwidths larger
than 20 MHz, e.g. 100 MHz.
Spatial multiplexing
Extension of LTE downlink spatial multiplexing to up
to eight layers is considered. For the uplink spatial
multiplying to up to four layers is considered.

Source: RP-080500 & RP-080763
8
LTE Advanced
LTE Advanced
Main technical features under discussion
Main technical features under discussion
Coordinated multiple point transmission and
reception:
This feature is considered as a tool to improve the
coverage of high data rates, the cell-edge throughput
and/or to increase system throughput.
In downlink this feature implies dynamic coordination among
multiple geographically separated transmission points. Possible
schemes include coordinated scheduling and/or beamforming,
and joint processing/transmission
In uplink this feature implies reception of the transmitted signal
at multiple, geographically separated points. Scheduling
decisions can be coordinated among cells to control
interference.
Source: RP-080500 & RP-080763
9
LTE Advanced
LTE Advanced
Main technical features under discussion
Main technical features under discussion
Relaying functionality:
Relaying is considered for LTE-Advanced as a tool
to improve e.g. the coverage of high data rates,
group mobility, temporary network deployment, the
cell-edge throughput and/or to provide coverage in

new areas.
Further enhanced MBMS
Mobility aspects
Source: RP-080500 & RP-080763
10
RAN Schedule
RAN Schedule
Nov 2008
TITLE TYPE DATES LOCATION CTRY

3GPPRAN1#55 OR 10 - 14 Nov 2008 Prague CZ

3GPPRAN2#64 OR 10 - 14 Nov 2008 Prague CZ

3GPPRAN3#62 OR 10 - 14 Nov 2008 Prague CZ

3GPPRAN4#49 OR 10 - 14 Nov 2008 Prague CZ

3GPPRAN5#41 OR 10 - 14 Nov 2008 Prague CZ

Dec 2008
TITLE TYPE DATES LOCATION CTRY

3GPPRAN#42 OR 2 - 5 Dec 2008 Athens GR

Jan 2009
TITLE TYPE DATES LOCATION CTRY

3GPPRAN1#55-BIS OR 12 - 16 Jan 2009 EU EU

3GPPRAN2#64-BIS OR 12 - 16 Jan 2009 EU EU

3GPPRAN4#49-BIS OR 12 - 16 Jan 2009 EU EU

Feb 2009
TITLE TYPE DATES LOCATION CTRY

3GPPRAN5#42 OR 9 - 13 Feb 2009 EU EU

3GPPRAN1#56 OR 9 - 13 Feb 2009 EU EU

3GPPRAN2#65 OR 9 - 13 Feb 2009 EU EU

3GPPRAN3#63 OR 9 - 13 Feb 2009 EU EU

3GPPRAN4#50 OR 9 - 13 Feb 2009 EU EU

Mar 2009
TITLE TYPE DATES LOCATION CTRY

3GPPRAN#43 OR 3 - 6 Mar 2009 Biarritz FR

3GPPRAN1#56-BIS OR 23 - 27 Mar 2009

3GPPRAN2#65-BIS OR 23 - 27 Mar 2009

3GPPRAN4#50-BIS OR 23 - 27 Mar 2009

3GPPRAN3#63-BIS OR 24 - 27 Mar 2009

Apr 2009
TITLE TYPE DATES LOCATION CTRY

3GPPRAN5#43 OR 20 - 24 Apr 2009


11
Process toward next steps
Process toward next steps
…
…
3GPP in its normal working methods considers the
views and contributions from its many members as
the basis for the discussion towards the development
of final specifications for the technology
Hence at this stage of the work in 3GPP, many views
are coming forward
For example: At recent 3GPP RAN Working Group Meetings on Physical
Layer, more than 130 contributions, many at the detailed level, have
contributed to substantial progress on LTE-Advanced
This is a key strength of the 3GPP process: the
resulting conclusions are able to take best advantage
of the crucial ideas for the development of a premier
IMT-Advanced technology solution