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LTE standards

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Title: LTE standards


1
LTE standards
  • Status for this work in 3GPP and what next for
    the Future
  • Francois COURAU
  • 3GPP TSG RAN Chairman

2
  • LTE STANDARDS
  • Status of the work within 3GPP TSG RAN
  • Detailed information
  • Introduction to LTE advanced
  • Timescale for LTE Advanced
  • Conclusion

3
  • Status of the work in 3GPP

4
3GPP TSG RAN Organization
TSG RAN
RAN WG1 Layer 1
RAN WG2 Layer 2/3
RAN WG3 Layer 2/3
RAN WG4 Layer 1 P/R
RAN WG5 UE Tests
5
  • General Introduction to the work in 3GPP

6
  • Work in 3GPP is organized around the concept of
    release which can be defined as a complete set of
    functionalities for a full cellular network
    allowing new set of services to be deployed by
    operators
  • After completing a long evolution of the Wideband
    CDMA radio technology, 3GPP decided to work on a
    new concept of radio technology to allow further
    evolution having in mind a long term evolution.
    LTE was born. But this does not stop completely
    parallel evolution of the WCDMA

7
  • Detailed information on the development of LTE

8
LTE Access Network Architecture
9
LTE Standard
  • Layer 1 specification
  • It can be separated in 2 parts
  • First part resulting from the work in RAN WG1
    dealing with the description of the physical
    layer is now subject to the correction phase
    since last term.Functionalities described are
    complete and no major changes are expected. Set
    of specification contained in 36.2xx series
  • Second part mainly concerning the Requirement and
    the Performances still need to be completed but
    this is already considered as complete at 60
    level. It is anticipated that this should be
    completed in December 2008. This work is mainly
    in the hand of WG4. This is a key activity as it
    is the premises for the tests activities. Set of
    specification contained in 36.1xx series

10
  • Layer 2 and Layer 3 (Signaling over Interfaces)
  • Over the radio interface
  • Mainly under responsibility of RAN WG2
  • It covers all aspects related to the MAC, RLC
    and RRC
  • Set of specification contained in 36.3xx series
  • In between the Core and the Access Network
  • Covers all the aspects from physical layer of the
    interfaces S1, X1 and X2
  • Set of specification contained in 36.4xx series

11
  • User Equipment Testing activities
  • WG5 is in charge of defining the test
    specification for the User Equipment designed by
    3GPP. This covers the two following aspects
  • Tests of the User Equipment part covering the
    Radio Interface (Access Stratum)
  • Tests of the User Equipment part covering the
    User/Core Network interface (Non Access Stratum)
  • Work has already started. Discussion on the
    priority of test development between TSG RAN and
    the Working Group started in June and are still
    under way

12
LTE Standards
TS Title Completion level at RAN38 Functional freezing date
36.201 LTE Physical Layer General Description Completed Dec. 07
36.211 Physical channels and modulation Completed Dec. 07
36.212 Multiplexing and channel coding Completed Dec. 07
36.213 Physical layer procedure Completed Dec. 07
36.214 Physical layer measurements Completed Dec. 07
13
TS Title Compl. level at RAN41 Functional freezing date
36.302 Services provided by the physical layer 95 Mar. 08
36.304 UE procedures in Idle mode 95 Mar. 08
36.306 UE Radio Access capabilities 95 Jun. 08
36.321 MAC 95 Jun. 08
36.322 RLC 95 Jun. 08
36.323 PDCP 95 Dec. 07
36.331 RRC 95 MAR. 09 for ASN.1
14
TS Title Compl. level at RAN40 Functional freezing date
36.401 EUTRAN Architecture Description 95 Mar. 08
36.410 S1 General Aspects and Principles 95 Mar. 08
36.411 S1 Layer 1 95 Mar. 08
36.412 S1 Signaling Transport 95 Mar. 08
36.413 S1 Protocol Specification 95 Mar. 08Sep. 08 for ASN.1
36.414 S1 Data Transport 95 Mar. 08
36.420 X2 General Aspects and Principles 95 Mar. 08
36.421 X2 Layer 1 95 Mar. 08
36.422 X2 Signaling Transport 95 Mar. 08
36.423 X2 Protocol Specification 95 Mar. 08March 09 for ASN.1
36.424 X2 Data Transport 95 Mar. 08
15
TS Title Title Compl. level at RAN41 Function freezing
36.101 UE radio transmission and reception Core requirements 90 Mar. 08
36.101 UE radio transmission and reception Performance requirements 60 Mar. 08
36.104 BS radio transmission and reception Core requirements 95 Mar. 08
36.104 BS radio transmission and reception Performance requirements 70 Mar. 08
36.133 Requirements for support of radio resource management Core requirements 90 Sep. 08
36.133 Requirements for support of radio resource management Performance requirements 60 Sep. 08
36.141 BS conformance testing Core requirements 80 Sept. 08
36.141 BS conformance testing Performance requirements 60 Sept. 08
16
TS Title Completion level at RAN38 Date for Approval Functional freezing date
36.508 Common test environments for UE conformance testing 10 Dec. 08 TBD
36.521 UE conformance specification Radio transmission and reception (RF) 20 Sep. 08 TBD
36.523 UE conformance specification (Sig) 15 Dec. 08 TBD
This date was set considering work plan for
AS(LTE) signaling only. Work plan that includes
NAS signaling still needs to be confirmed in the
RAN5 work plan (awaiting progress in CT1 mainly).
17
  • Introduction to LTE advanced

18
LTE Advanced
  • ITU-R is currently investigating 4G and has
    solicited all organization for proposing
    technology as candidate for radio interface
  • 3GPP had recently organized two workshops to
    examine this request
  • At the last plenary it has been decided to answer
    to ITU-R with an evolution of the radio
    technology already proposed in as an IMT 2000
    technology LTE
  • Here follows the foreseen evolutions already
    under study in 3GPP

19
  • Main Characteristics for LTE Advance
  • The objective of Further Advancements for E-UTRA
    is as follows
  • Define a framework for further advancements of
    E-UTRA and E-UTRAN (to be referred to as Advanced
    E-UTRA and Advanced EUTRAN considering
  • The time schedule of ITU-R
  • That the work on Advanced E-UTRA and Advanced
    E-UTRAN must not introduce any delay to the
    completion of the Release 8 specification of
    E-UTRA and E-UTRAN
  • That the general enhancements of specifications
    for Release 8 E-UTRA and E-UTRAN are maintained
    and progressed in a focused and efficient manner.

20
  • Define requirements for Advanced E-UTRA and
    Advanced E-UTRAN based on the ITU-R requirements
    for IMT-Advanced as well as 3GPP operators own
    requirements for advancing Release 8 E-UTRA AND
    E-UTRAN considering
  • E-UTRA radio technology and architecture
    improvements
  • Support for all radio modes of operation
  • Interworking with legacy RATs (scenarios and
    performance requirements)
  • Backward compatibility of Advanced E-UTRA and
    Advanced E-UTRAN with Release 8 E-UTRA and
    E-UTRAN i.e.
  • an Release 8 E-UTRA terminal can work in an
    Advanced E-UTRAN,
  • an Advanced E-UTRA terminal can work in an
    Release 8 E-UTRAN and
  • non-backward compatible elements could be
    considered based on RAN decision
  • Newly identified frequency bands and existing
    frequency bands, and their advantages and
    limitations, in particular, the consideration of
    the WRC-07 conclusions, to ensure that Advanced
    E-UTRA can accommodate radio channel bandwidths
    commensurate with the availability in parts of
    the world of wideband channels in the spectrum
    allocations (above 20 MHz) and at the same time
    being mindful on the need to accommodate those
    parts of the world where the spectrum allocations
    will not have availability of wideband channels 

21
  • Identify potential solutions, technologies for
    the Advanced E-UTRA and Advanced E-UTRAN. The
    study areas include
  • Physical layer
  • Radio interface layer 2 and RRC
  • E-UTRAN architecture
  • RF, including Aspects of wider channel bandwidth
    than 20 MHz
  • Advanced system concepts
  • To develop documents that will serve as a basis
    for the documentation to be submitted to ITU-R to
    provide the 3GPP proposals for IMT-Advanced
  • An Early Proposal submission that would be sent
    to ITU-R, to be agreed at RAN 41 (9-12 September
    2008), for submission to WP 5D 3 (8-15 October
    2008).

22
  • A Complete Technology submission that would be
    sent to ITU-R, to be agreed at RAN 44 (26-29 May
    2009), for submission to WP 5D 5 (planned for
    10-17 June 2009).
  • A Final submission to incorporate updates,
    additional specific details or feature additions,
    and the required self-evaluation that would be
    sent to ITU-R, to be agreed at RAN 45 (22-25
    September 2009), for submission to WP 5D 6
    (planned for 13-20 Oct 2009).

23
  • RAN41 9-12 September 2008 in Kobe, JP
  • Have a verification that the 3GPP requirements
    are equal or exceeding the ITU-R requirements
  • Update 3GPP LTE-Advanced requirements according
    to the verification results if needed
  • Make an early submission of the 3GPP concept to
    the ITU-R IMT-Advanced process

2009
2010
2011
2007
2008
LTE
CR phase
38
39
40
41
42
43
44
45
46
47
48
49





WS
2nd WS
Study Item
1
2
3
4
5
6
7
8
9
10
11
12
Circular letter amendment with requirements and
eval. methodology from WP 5D 2
24
Conclusion
  • As can be seen from the previous slide 3GPP is
    fully busy for a certain number of years with
    covering at the same time
  • Evolution of WCDMA
  • Completion of the development of LTE
  • Definition of LTE advance
  • LTE is part of IMT advance process in ITU-R and
    3GPP will provide the SDO with the evaluation of
    the technology

25
  • Thank you!
  • Any Question?
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