Radiocommunication Study Groups

By Shannon Kennedy,2014-03-26 18:34
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Meet appropriate EMC regulations, Req, M.1034, The proposed update fits well within the framework of the existing IMT-2000 OFDMA TDD WMAN radio

2008-07-17 IEEE L802.16-08/044d3

This is a draft contribution approved by IEEE 802.16 WG.


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    Radiocommunication Study Groups

     *** DRAFT ***

    Document 5D/???-E Received:

    15 July 2008 Question: Question ITU-R 229-1/8 English only


    *** DRAFT ***

    Institute of Electrical and Electronics Engineers (IEEE) UPDATED MATERIAL ON IMT-2000 OFDMA TDD WMAN FOR REVISION 9


1 Source information

    This contribution was developed by IEEE Project 802?, the Local and Metropolitan Area Network

    Standards Committee (“IEEE 802”), an international standards development committee organized

    under the IEEE and the IEEE Standards Association (“IEEE-SA”).

    The content herein was prepared by a group of technical experts in IEEE 802 and industry and was

    approved for submission by the IEEE 802.16? Working Group on Wireless Metropolitan Area

    Networks, the IEEE 802.18 Radio Regulatory Technical Advisory Group, and the IEEE 802

    Executive Committee, in accordance with the IEEE 802 policies and procedures, and represents the

    view of IEEE 802.

    2 Discussion

    Following Document 5D/122, this contribution contains updated material on IMT-2000 OFDMA

    TDD WMAN for Revision 9 of Recommendation ITU-R M.1457 in line with Circular Letter

    8/LCCE/95 and the schedule received from ITU-R WP 5D (IEEE L802.16-08/003). This material will be further updated in time for the final meeting addressing the development of Revision 9.

    In particular, the material required as specified in the update procedure for revisions of

    Recommendation ITU-R M.1457 (8/LCCE/95) is addressed in the following annexes:

    Annex 1: Update of Section 5.6.2

    Annex 2: Modifications to Section 5.6.1

    Annex 3: Updated GCS

    Annex 4: Summary and rationale of the proposed update

    Annex 5: Self-evaluation of the proposed update against the evaluation criteria


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    5D/???-E Annex 6: Self-declaration that the proposed amendments are self-consistent between Section 5.6.1,

    Section 5.6.2, and the GCS.

    Annex 7: Summary of the material that is planned to be submitted to the final meeting for

    Revision 9.

    3 Proposal

    We propose that the amendments shown in the electronic attachments in Annexes 1 and 2 be agreed

    for incorporation in Revision 9 of M.1457.

Contact: Michael Lynch



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    Annex 1

    Update of Section 5.6.2 See electronic attachment.


    Annex 2

    Modifications to Section 5.6.1

    See electronic attachment.


    Annex 3

    Updated GCS It is anticipated that the updated set of the Global Core Specifications (GCS) for IMT-2000

    OFDMA TDD WMAN will be submitted as per established procedures.

    Annex 4

    Summary and rationale of the proposed update

    The main purpose of this update is to align Recommendation ITU-R M.1457 to the most updated

    versions of the specifications underlying the radio interface IMT-2000 OFDMA TDD WMAN.

    Furthermore, alignment is made by incorporating the FDD mode of IEEE Std 802.16. The main

    enhancements are in VoIP capacity, MIMO, load balancing, and handover latency.


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    Annex 5

    Self-evaluation of the proposed update against the evaluation criteria

    The self-evaluation of the “total” radio interface update of IMT-2000 OFDMA TDD WMAN has

    been made against all evaluation criteria listed in the update procedure contained in Circular Letter

    8/LCCE/95. The results are that the proposed updates meet the evaluation criteria as follows:

    7.1 “The Evaluation criteria” (Section 7.1 in Circular Letter 8/LCCE/95) The “requirements and objectives of IMT-2000” and the “Minimum performance capabilities for

    IMT-2000” as per Attachments 4 and 6 of Circular Letter 8/LCCE/47 were considered. The values

    included in Circular Letter 8/LCCE/47 were used. The proposed update consists of enhancements to

    the existing IMT-2000 OFDMA TDD WMAN radio interface. The evaluation of the proposed

    update was done in the context of the “total” radio interface. As shown in the tables below, the

    conclusion is that the IMT-2000 OFDMA TDD WMAN radio interfaces with the proposed

    enhancements continues to meet all evaluation criteria in “Requirements and objectives of IMT-2000” and “Minimum performance capabilities for IMT-2000”.

    TABLE 1

    Requirements and Objectives Relevant to the Evaluation of

    Candidate Radio Transmission Technologies

    IMT-2000 Item Description Obj/Req Source Meets Voice and data performance requirements

    1. One-way end to end delay less than 40 ms Req G.174, Yes

     ? 7.5 2. For mobile videotelephony services, the IMT-2000 terrestrial Req Suppl. Yes component should operate so that the maximum overall delay (as F.720, defined in ITU-T Recommendation F.720) should not exceed 400 F.723, ms, with the one way delay of the transmission path not exceeding

    G.114 150 ms

    3. Speech quality should be maintained during <3% frame Req G.174, Yes erasures over any ? 7.11 and 10 second period. The speech quality criterion is a reduction of M.1079 <0.5 mean opinion score unit (5 point scale) relative to the error-? 7.3.1 free condition

    (G.726 at 32 kbit/s)

    4. DTMF signal reliable transport (for PSTN is typically less than Req G.174, ? Yes 4one DTMF error signal in 10) 7.11 and


    ? 7.3.1 5. Voiceband data support including G3 facsimile Req M.1079 Yes

     ? 7.2.2, 6. Support packet switched data services as well as circuit Req M.1034 Yes switched data; requirements for data performance given in ITU-?? 10.8,


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    IMT-2000 Item Description Obj/Req Source Meets TG.174 10.9 Radio interfaces and subsystems, network related performance requirements 7. Network interworking with PSTN and ISDN in accordance with Req M.687-1. Yes Q.1031 and Q.1032 ? 5.4 8. Meet spectral efficiency and radio channel performance Req M.1034.? Yes requirements of M.1079 12.3.3/4 9. Provide phased approach with data rates up to 2 Mbit/s in phase Obj M.687, Yes 1 ? 1.1.14 10.Maintain bearer channel bit-count integrity (e.g. synchronous Obj M.1034,? Yes data services and many encryption techniques) 10.12 11. Support for different cell sizes, for example: Obj M.1035,? Yes

     Mega cell Radius~100-500 km 10.1

     Macro cell Radius <35km, Speed <500 km/h

     Micro cell Radius <1km, Speed <100 km/h

     Pico cell Radius <50m, Speed <10 km/h

    Application of IMT-2000 for fixed services and developing countries

    12. Circuit noise- idle noise levels in 99% of the time about Obj M.819-1, Yes 100pWp ? 10.3 13. Error performance - as specified in ITU-R F.697 Obj M.819-1, Yes

    ? 10.4 14. Grade of service better than 1% Obj M.819-1, Yes

    ? 10.5

    TABLE 2

    Generic Requirements and Objectives Relevant to the Evaluation of

    Candidate Radio Transmission Technologies

    IMT-2000 Item Description Obj/Req Source Meets

    Radio interfaces and subsystems, network related performance requirements

    1. Security comparable to that of PSTN/ISDN Obj M.687-1, Yes

     ? 4.4

    2. Support mobility, interactive and distribution services Req M.816, Yes

    ? 6

    3. Support UPT and maintain common presentation to users Obj M.816, Yes ? 4

    4. Voice quality comparable to the fixed network (applies to both Req M819-1, Yes mobile and fixed service) Table 1,


    ? 7.1

    5. Support encryption and maintain encryption when roaming and Req M.1034 Yes during handover ? 11.3


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    IMT-2000 Item Description Obj/Req Source Meets 6. Network access indication similar to PSTN (e.g. dialtone) Req M.1034 Yes

    ?? 11.5 7. Meet safety requirements and legislation Req M.1034, Yes

    ? 11.6 8. Meet appropriate EMC regulations Req M.1034, Yes

    ? 11.7 9. Support multiple public/private/residential IMT-2000 operators Req M.1034, Yes in the same locality ? 12.1.2 10. Support multiple mobile station types Req M.1034, Yes

    ? 12.1.4 11. Support roaming between IMT-2000 operators and between Req M.1034, Yes different IMT-2000 radio interfaces/environments ? 12.2.2 12. Support seamless handover between different IMT-2000 Req M.1034, Yes environments such that service quality is maintained and signaling ? 12.2.3 is minimized

    13. Simultaneously support multiple cell sizes with flexible base Req M.1034, Yes location, support use of repeaters and umbrella cells as well as ? 12.2.5 deployment in low capacity areas

    14. Support multiple operator coexistence in a geographic area Req M.1034, Yes

    ? 12.2.5 15. Support different spectrum and flexible band sharing in Req M.1034, Yes different countries including flexible spectrum sharing between ? 12.2.8 different IMT-2000 operators (see M.1036)

    16. Support mechanisms for minimizing power and interference Req M.1034, Yes between mobile and base stations ? 17. Support various cell types dependent on environment Req M.1034, Yes (M.1035 ? 10.1) ? 12.2.9 18. High resistance to multipath effects Req M.1034, Yes

    ? 12.3.1 19. Support appropriate vehicle speeds (as per ? 7) Req M.1034. Yes Note: applicable to both terrestrial and satellite proposals ? 12.3.2 20. Support possibility of equipment from different vendors Req M.1034, Yes

    ? 12.1.3 21. Offer operational reliability at least as good as 2nd generation Req M.1034, Yes mobile systems ? 12.3.5 22. Ability to use terminal to access services in more than one Obj M.1035, Yes environment, desirable to access services from one terminal in all ? 7.1 environments

    23. End-to-end quality during handover comparable to fixed Obj M.1034-1 Yes services ? 24. Support multiple operator networks in a geographic area Obj Yes without requiring time synchronization


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    IMT-2000 Item Description Obj/Req Source Meets 25. Layer 3 contains functions such as call control, mobility Obj M.1035, Yes management and radio resource management some of which are ? 8 radio dependent. It is desirable to maintain layer 3 radio

    transmission independent as far as possible

    26. Desirable that transmission quality requirements from the Obj M.1035, Yes upper layer to physical layers be common for all services ? 8.1 27. The link access control layer should as far as possible not Obj M.1035, Yes contain radio transmission dependent functions ? 8.3 28. Traffic channels should offer a functionally equivalent Obj M.1035, Yes capability to the ISDN B channels ? 9.3.2 29. Continually measure the radio link quality on forward and Obj M.1035, Yes reverse channels ? 11.1 30. Facilitate the implementation and use of terminal battery Obj M.1035, Yes saving techniques ? 12.5 31. Accommodate various types of traffic and traffic mixes Obj M.1036, Yes

    ? 1.10 Application of IMT-2000 for fixed services and developing countries

    32. Repeaters for covering long distances between terminals and Req M.819-1, Yes base stations, small rural exchanges with wireless trunks etc. Table 1 33. Withstand rugged outdoor environment with wide temperature Req M.819-1, Yes and humidity variations Table 1 34. Provision of service to fixed users in either rural or urban areas Obj M.819-1, Yes

    ? 4.1 35. Coverage for large cells (terrestrial) Obj M.819-1, Yes

    ? 7.2 36. Support for higher encoding bit rates for remote areas Obj M.819-1, Yes

    ? 10.1 Satellite component (Not required for RTT submission)

    37. Links between the terrestrial and the satellite control elements Req M.818-1, N/A for handover and exchange of other information ? 3.0 38. Take account for constraints for sharing frequency bands with Obj M.818-1, N/A other services (WARC-92) ? 4.0 39. Compatible multiple access schemes for terrestrial and satellite Obj M.818-1, N/A components ? 6.0 40. Service should be comparable quality to terrestrial component Obj M.818-1, N/A as far as possible ? 10.0 41. Use of satellites to serve large cells for fixed users Obj M.819-2, N/A

    ? 7.1 42. Key features (e.g. coverage, optimization, number of systems) Obj M.1167, N/A

    ? 6.1


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    IMT-2000 Item Description Obj/Req Source Meets 43. Radio interface general considerations Req M.1167, N/A

    ? 8.1.1 44. Doppler effects Req M.1167, N/A

    ? 8.1.2

    TABLE 3

    Subjective Requirements and Objectives Relevant to the

    Evaluation of Candidate Radio Transmission Technologies

    IMT-2000 Item Description Obj/Req Source Meets 1. Fixed Service- Power consumption as low as possible for solar Req M.819-1. Yes and other sources Table 1 2. Minimize number of radio interfaces and radio sub-system Req M.1034, Yes complexity, ? 12.2.1 maximize commonality (M.1035, ? 7.1)

    3. Minimize need for special interworking functions Req M.1034, Yes

    ? 12.2.4 4. Minimum of frequency planning and inter-network coordination Req M.1034, Yes and simple resource management under time-varying traffic ? 12.2.6 5. Support for traffic growth, phased functionality, new services or Req M.1034, Yes technology evolution ? 12.2.7 6. Facilitate the use of appropriate diversity techniques avoiding Req M.1034, Yes significant complexity if possible ? 12.2.10 7. Maximize operational flexibility Req M.1034, Yes

    ? 12.2.11 8. Designed for acceptable technological risk and minimal impact Req M.1034, Yes from faults ? 12.2.12

    9. When several cell types are available, select the cell that is the Obj M.1034, Yes most cost and capacity efficient ? 10.3.3 10. Minimize terminal costs, size and power consumption, where Obj M.1036, Yes appropriate and consistent with other requirements ? 1.12


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    TABLE 4

    Minimum Performance Capabilities

    Test environments Indoor Office Outdoor to Indoor Vehicular

    and Pedestrian

    Mobility mobility type mobility type mobility type Considerations (low) (medium) (high)

    Handover Yes Yes Yes Support of general service capabilities

    Packet data Yes Yes Yes

    Asymmetric services Yes Yes Yes

    Multimedia Yes Yes Yes Variable bit rate Yes Yes Yes 8.1 Compatibility with the existing IMT-2000 radio interfaces

    The proposed update fits well within the framework of the existing IMT-2000 OFDMA TDD

    WMAN radio interface. All features supported in the existing IMT-2000 OFDMA TDD WMAN

    are still supported in the proposed update.

    8.2 Harmonization within multiple proposals

    See Section 9.2.

    “Other Considerations” (Section 9 in 8/LCCE/95)

    9.1 Benefits of the proposed enhancement

    The proposed enhancements improve the performance of IMT-2000 OFDMA TDD WMAN radio


    9.2 Harmonization and consensus building

    Through their membership and through liaison communications, the SDO stakeholders, the IEEE

    and the WiMAX Forum, have established harmonization and consensus building. IEEE expects

    that the system profile submitted by the WiMAX Forum will be fully consistent with IEEE Std


    9.3 Enhanced performance capabilities

    The proposed update is fully in line with the ongoing activities on the vision for the enhancements

    of IMT-2000, also reflected in the Roadmap for the future updates of Recommendation

    ITU-R M.1457.


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