LTEMAC协议最新版本Word下载.docx

1、Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16Internethttp:/www.3gpp.orgCopyright NotificationNo part may be reproduced except as authorized by written permission.The copyright and the foregoing restriction extend to reproduction in all media. 2014, 3GPP Organizational Partners （ARIB, ATIS, CCSA, ET

2、SI, TTA, TTC）.All rights reserved.UMTS is a Trade Mark of ETSI registered for the benefit of its members3GPP is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational PartnersLTE is a Trade Mark of ETSI currently being registered for the benefit of its Members

3、and of the 3GPP Organizational PartnersGSM and the GSM logo are registered and owned by the GSM AssociationContentsForeword 51 Scope 62 References 63 Definitions and abbreviations 63.1 Definitions 63.2 Abbreviations 84 General 84.1 Introduction 84.2 MAC architecture 94.2.1 MAC Entities 94.3 Services

4、 104.3.1 Services provided to upper layers 104.3.2 Services expected from physical layer 104.4 Functions 104.5 Channel structure 114.5.1 Transport Channels 114.5.2 Logical Channels 114.5.3 Mapping of Transport Channels to Logical Channels 114.5.3.1 Uplink mapping 124.5.3.2 Downlink mapping 125 MAC p

5、rocedures 135.1 Random Access procedure 135.1.1 Random Access Procedure initialization 135.1.2 Random Access Resource selection 145.1.3 Random Access Preamble transmission 155.1.4 Random Access Response reception 155.1.5 Contention Resolution 165.1.6 Completion of the Random Access procedure 175.2 M

6、aintenance of Uplink Time Alignment 175.3 DL-SCH data transfer 185.3.1 DL Assignment reception 185.3.2 HARQ operation 205.3.2.1 HARQ Entity 205.3.2.2 HARQ process 205.3.3 Disassembly and demultiplexing 215.4 UL-SCH data transfer 225.4.1 UL Grant reception 225.4.2 HARQ operation 235.4.2.1 HARQ entity

7、 235.4.2.2 HARQ process 245.4.3 Multiplexing and assembly 255.4.3.1 Logical channel prioritization 255.4.3.2 Multiplexing of MAC Control Elements and MAC SDUs 265.4.4 Scheduling Request 265.4.5 Buffer Status Reporting 275.4.6 Power Headroom Reporting 285.5 PCH reception 295.6 BCH reception 305.7 Dis

8、continuous Reception （DRX） 305.8 MAC reconfiguration 315.9 MAC Reset 325.10 Semi-Persistent Scheduling 325.10.1 Downlink 335.10.2 Uplink 335.11 Handling of unknown, unforeseen and erroneous protocol data 335.12 MCH reception 335.13 Activation/Deactivation of SCells 346 Protocol Data Units, formats a

9、nd parameters 356.1 Protocol Data Units 356.1.1 General 356.1.2 MAC PDU （DL-SCH and UL-SCH except transparent MAC and Random Access Response, MCH） 356.1.3 MAC Control Elements 366.1.3.1 Buffer Status Report MAC Control Elements 366.1.3.2 C-RNTI MAC Control Element 396.1.3.3 DRX Command MAC Control E

10、lement 396.1.3.4 UE Contention Resolution Identity MAC Control Element 406.1.3.5 Timing Advance Command MAC Control Element 406.1.3.6 Power Headroom Report MAC Control Element 406.1.3.6a Extended Power Headroom Report MAC Control Element 416.1.3.7 MCH Scheduling Information MAC Control Element 426.1

11、.3.8 Activation/Deactivation MAC Control Element 436.1.3.9 Long DRX Command MAC Control Element 436.1.4 MAC PDU （transparent MAC） 436.1.5 MAC PDU （Random Access Response） 436.2 Formats and parameters 446.2.1 MAC header for DL-SCH, UL-SCH and MCH 446.2.2 MAC header for Random Access Response 466.2.3

12、MAC payload for Random Access Response 467 Variables and constants 467.1 RNTI values 467.2 Backoff Parameter values 477.3 PRACH Mask Index values 487.4 Subframe_Offset values 487.5 TTI_BUNDLE_SIZE value 487.6 DELTA_PREAMBLE values 487.7 HARQ RTT Timer 49Annex A （normative）: Handling of measurement g

13、aps 50Annex B （normative）: Contention resolution for RACH access 51Annex C （informative）: Intended UE behaviour for DRX Timers 52Annex D （informative）: Change history 53ForewordThis Technical Specification has been produced by the 3rd Generation Partnership Project （3GPP）.The contents of the present

14、 document are subject to continuing work within the TSG and may change following formal TSG approval. Should the TSG modify the contents of the present document, it will be re-released by the TSG with an identifying change of release date and an increase in version number as follows:Version x.y.zwhe

15、re:x the first digit:1 presented to TSG for information;2 presented to TSG for approval;3 or greater indicates TSG approved document under change control.y the second digit is incremented for all changes of substance, i.e. technical enhancements, corrections, updates, etc.z the third digit is increm

16、ented when editorial only changes have been incorporated in the document.1 ScopeThe present document specifies the E-UTRA MAC protocol.2 ReferencesThe following documents contain provisions which, through reference in this text, constitute provisions of the present document. References are either sp

17、ecific （identified by date of publication, edition number, version number, etc.） or nonspecific. For a specific reference, subsequent revisions do not apply. For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document （including a GSM document）, a non-spec

18、ific reference implicitly refers to the latest version of that document in the same Release as the present document.1 3GPP TR 21.905: Vocabulary for 3GPP Specifications.2 3GPP TR 36.213: Physical Layer Procedures3 3GPP TS 36.322: “Evolved Universal Terrestrial Radio Access （E-UTRA）; Radio Link Contr

19、ol （RLC） protocol specification”.4 3GPP TS 36.323: Packet Data Convergence Protocol （PDCP） Specification”.5 3GPP TS 36.212: Multiplexing and channel coding”.6 3GPP TS 36.214: Physical layer; Measurements”.7 3GPP TS 36.211: Physical Channels and Modulation”.8 3GPP TS 36.331: Radio Resource Control （R

20、RC）; Protocol specification”.9 3GPP TS 36.133: Requirements for support of radio resource management10 3GPP TS 36.101: User Equipment （UE） radio transmission and reception11 3GPP TS 36.216: Physical layer for relaying operation3 Definitions and abbreviations3.1 DefinitionsFor the purposes of the pre

21、sent document, the terms and definitions given in TR21.9051 and the following apply. A term defined in the present document takes precedence over the definition of the same term, if any, in TR1.Active Time: Time related to DRX operation, as defined in subclause 5.7, during which the UE monitors the

22、PDCCH in PDCCH-subframes.mac-ContentionResolutionTimer: Specifies the number of consecutive subframe（s） during which the UE shall monitor the PDCCH after Msg3 is transmitted.DRX Cycle: Specifies the periodic repetition of the On Duration followed by a possible period of inactivity （see figure 3.1-1

23、below）. Figure 3.1-1: DRX Cycledrx-InactivityTimer: Specifies the number of consecutive PDCCH-subframe（s） after the subframe in which a PDCCH indicates an initial UL or DL user data transmission for this UE.drx-RetransmissionTimer: Specifies the maximum number of consecutive PDCCH-subframe（s） until

24、a DL retransmission is received.drxShortCycleTimer: Specifies the number of consecutive subframe（s） the UE shall follow the Short DRX cycle.drxStartOffset: Specifies the subframe where the DRX Cycle starts.HARQ information: HARQ information consists of New Data Indicator （NDI）, Transport Block （TB）

25、size. For DL-SCH transmissions the HARQ information also includes HARQ process ID. For UL-SCH transmission the HARQ info also includes Redundancy Version （RV）. In case of spatial multiplexing on DL-SCH the HARQ information comprises a set of NDI and TB size for each transport block.HARQ RTT Timer: T

26、his parameter specifies the minimum amount of subframe（s） before a DL HARQ retransmission is expected by the UE.Msg3: Message transmitted on UL-SCH containing a C-RNTI MAC CE or CCCH SDU, submitted from upper layer and associated with the UE Contention Resolution Identity, as part of a random access

27、 procedure.onDurationTimer: Specifies the number of consecutive PDCCH-subframe（s） at the beginning of a DRX Cycle.PDCCH: Refers to the PDCCH 7, EPDCCH （in subframes when configured） or, for an RN with R-PDCCH configured and not suspended, to the R-PDCCH. PDCCH-subframe: Refers to a subframe with PDCCH. For FDD UE operation, this re