1、 ETSI TS 136 321 V14.5.0 (2018-01) LTE; Evolved Universal Terrestrial Radio Access (E-UTRA); Medium Access Control (MAC) protocol specification (3GPP TS 36.321 version 14.5.0 Release 14) TECHNICAL SPECIFICATION ETSI ETSI TS 136 321 V14.5.0 (2018-01)13GPP TS 36.321 version 14.5.0 Release 14Reference
2、RTS/TSGR-0236321ve50 Keywords LTE ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Siret N 348 623 562 00017 - NAF 742 C Association but non lucratif enregistre la Sous-Prfecture de Grasse (06) N 7803/88 Important notice The present d
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8、arks of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. oneM2M logo is protected for the benefit of its Members. GSM and the GSM logo are trademarks registered and owned by the GSM Association. ETSI ETSI TS 136 321 V14.5.0 (2018-01)23GPP TS 36.321 version 14.5
9、.0 Release 14Intellectual Property Rights Essential patents IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found in ETSI SR
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11、tigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document. Trademarks The present documen
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13、 the present document does not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks. Foreword This Technical Specification (TS) has been produced by ETSI 3rd Generation Partnership Project (3GPP). The present document may refer to technical specif
14、ications or reports using their 3GPP identities, UMTS identities or GSM identities. These should be interpreted as being references to the corresponding ETSI deliverables. The cross reference between GSM, UMTS, 3GPP and ETSI identities can be found under http:/webapp.etsi.org/key/queryform.asp. Moda
15、l verbs terminology In the present document “shall“, “shall not“, “should“, “should not“, “may“, “need not“, “will“, “will not“, “can“ and “cannot“ are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of provisions). “must“ and “must not“ are N
16、OT allowed in ETSI deliverables except when used in direct citation. ETSI ETSI TS 136 321 V14.5.0 (2018-01)33GPP TS 36.321 version 14.5.0 Release 14Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 6g31 Scope 7g32 References 7g33 Definitions and abbreviatio
17、ns . 8g33.1 Definitions 8g33.2 Abbreviations . 10g34 General . 11g34.1 Introduction 11g34.2 MAC architecture . 11g34.2.1 MAC Entities 11g34.3 Services 14g34.3.1 Services provided to upper layers . 14g34.3.2 Services expected from physical layer 14g34.4 Functions 14g34.5 Channel structure 15g34.5.1 T
18、ransport Channels . 15g34.5.2 Logical Channels 16g34.5.3 Mapping of Transport Channels to Logical Channels 16g34.5.3.1 Uplink mapping . 16g34.5.3.2 Downlink mapping 17g34.5.3.3 Sidelink mapping 18g35 MAC procedures 18g35.1 Random Access procedure . 18g35.1.1 Random Access Procedure initialization 18
19、g35.1.2 Random Access Resource selection 21g35.1.3 Random Access Preamble transmission . 23g35.1.4 Random Access Response reception. 24g35.1.5 Contention Resolution 26g35.1.6 Completion of the Random Access procedure 28g35.2 Maintenance of Uplink Time Alignment 28g35.3 DL-SCH data transfer . 30g35.3
20、.1 DL Assignment reception . 30g35.3.2 HARQ operation . 32g35.3.2.1 HARQ Entity. 32g35.3.2.2 HARQ process 33g35.3.3 Disassembly and demultiplexing 34g35.4 UL-SCH data transfer . 34g35.4.1 UL Grant reception . 34g35.4.2 HARQ operation . 36g35.4.2.1 HARQ entity . 36g35.4.2.2 HARQ process 37g35.4.3 Mul
21、tiplexing and assembly . 39g35.4.3.1 Logical channel prioritization . 39g35.4.3.2 Multiplexing of MAC Control Elements and MAC SDUs . 41g35.4.4 Scheduling Request. 41g35.4.5 Buffer Status Reporting 42g35.4.5a Data Volume and Power Headroom Reporting 43g35.4.6 Power Headroom Reporting . 43g35.5 PCH r
22、eception 46g35.6 BCH reception 46g3ETSI ETSI TS 136 321 V14.5.0 (2018-01)43GPP TS 36.321 version 14.5.0 Release 145.7 Discontinuous Reception (DRX) 46g35.7a Discontinuous Reception (DRX) for SC-PTM . 49g35.8 MAC reconfiguration . 50g35.9 MAC Reset . 50g35.10 Semi-Persistent Scheduling 51g35.10.1 Dow
23、nlink 51g35.10.2 Uplink . 51g35.11 Handling of unknown, unforeseen and erroneous protocol data 52g35.12 MCH reception . 52g35.13 Activation/Deactivation of SCells 53g35.14 SL-SCH Data transfer 54g35.14.1 SL-SCH Data transmission . 54g35.14.1.1 SL Grant reception and SCI transmission . 54g35.14.1.2 S
24、idelink HARQ operation . 59g35.14.1.2.1 Sidelink HARQ Entity . 59g35.14.1.2.2 Sidelink process . 59g35.14.1.3 Multiplexing and assembly . 61g35.14.1.3.1 Logical channel prioritization 61g35.14.1.3.2 Multiplexing of MAC SDUs . 61g35.14.1.4 Buffer Status Reporting . 61g35.14.2 SL-SCH Data reception 63
25、g35.14.2.1 SCI reception. 63g35.14.2.2 Sidelink HARQ operation . 64g35.14.2.2.1 Sidelink HARQ Entity . 64g35.14.2.2.2 Sidelink process . 64g35.14.2.3 Disassembly and demultiplexing 65g35.15 SL-DCH data transfer . 65g35.15.1 SL-DCH data transmission . 65g35.15.1.1 Resource allocation . 65g35.15.1.2 S
26、idelink HARQ operation . 65g35.15.1.2.1 Sidelink HARQ Entity . 65g35.15.1.2.2 Sidelink process . 66g35.15.2 SL-DCH data reception 66g35.15.2.1 Sidelink HARQ operation . 66g35.15.2.1.1 Sidelink HARQ Entity . 66g35.15.2.1.2 Sidelink process . 67g35.16 SL-BCH data transfer . 67g35.16.1 SL-BCH data tran
27、smission . 67g35.16.2 SL-BCH data reception . 68g35.17 Data inactivity monitoring 68g35.18 Recommended Bit Rate 68g35.19 Activation/Deactivation of CSI-RS resources 69g35.20 Preallocated uplink grant 69g35.21 SC-PTM Stop Indication 69g36 Protocol Data Units, formats and parameters . 70g36.1 Protocol
28、 Data Units 70g36.1.1 General 70g36.1.2 MAC PDU (DL-SCH and UL-SCH except transparent MAC and Random Access Response, MCH) 70g36.1.3 MAC Control Elements 71g36.1.3.1 Buffer Status Report MAC Control Elements . 71g36.1.3.1a Sidelink BSR MAC Control Elements 74g36.1.3.2 C-RNTI MAC Control Element 75g3
29、6.1.3.3 DRX Command MAC Control Element . 76g36.1.3.4 UE Contention Resolution Identity MAC Control Element 76g36.1.3.5 Timing Advance Command MAC Control Element . 76g36.1.3.6 Power Headroom Report MAC Control Element . 77g36.1.3.6a Extended Power Headroom Report MAC Control Elements 77g36.1.3.6b D
30、ual Connectivity Power Headroom Report MAC Control Element . 80g36.1.3.7 MCH Scheduling Information MAC Control Element . 82g36.1.3.7a Extended MCH Scheduling Information MAC Control Element . 83g36.1.3.8 Activation/Deactivation MAC Control Elements . 83g3ETSI ETSI TS 136 321 V14.5.0 (2018-01)53GPP
31、TS 36.321 version 14.5.0 Release 146.1.3.9 Long DRX Command MAC Control Element 84g36.1.3.10 Data Volume and Power Headroom Report MAC Control Element 84g36.1.3.11 SPS confirmation MAC Control Element . 85g36.1.3.12 SC-PTM Stop Indication MAC Control Element . 85g36.1.3.13 Recommended bit rate MAC C
32、ontrol Element . 85g36.1.3.14 Activation/Deactivation of CSI-RS resources MAC Control Element . 86g36.1.4 MAC PDU (transparent MAC) . 87g36.1.5 MAC PDU (Random Access Response) . 87g36.1.6 MAC PDU (SL-SCH) . 89g36.2 Formats and parameters 91g36.2.1 MAC header for DL-SCH, UL-SCH and MCH 91g36.2.2 MAC
33、 header for Random Access Response . 93g36.2.3 MAC payload for Random Access Response . 93g36.2.4 MAC header for SL-SCH . 93g37 Variables and constants 95g37.1 RNTI values . 95g37.2 Backoff Parameter values . 96g37.3 PRACH Mask Index values 98g37.4 Subframe_Offset values . 98g37.5 TTI_BUNDLE_SIZE va
34、lue 98g37.6 DELTA_PREAMBLE values 98g37.7 HARQ RTT Timers 99g37.8 DL_REPETITION_NUMBER value . 99g37.9 UL_REPETITION_NUMBER value . 99g3Annex A (normative): Handling of measurement gaps 100g3Annex B (normative): Contention resolution for RACH access 101g3Annex C (informative): Intended UE behaviour
35、for DRX Timers 102g3Annex D (informative): Change history . 103g3History 110g3ETSI ETSI TS 136 321 V14.5.0 (2018-01)63GPP TS 36.321 version 14.5.0 Release 14Foreword This Technical Specification has been produced by the 3rdGeneration Partnership Project (3GPP). The contents of the present document a
36、re 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.z where: x the
37、 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 increment
38、ed when editorial only changes have been incorporated in the document. ETSI ETSI TS 136 321 V14.5.0 (2018-01)73GPP TS 36.321 version 14.5.0 Release 141 Scope The present document specifies the E-UTRA MAC protocol. 2 References The following documents contain provisions which, through reference in th
39、is text, constitute provisions of the present document. - References are either specific (identified by date of publication, edition number, version number, etc.) or non-specific. - For a specific reference, subsequent revisions do not apply. - For a non-specific reference, the latest version applie
40、s. In the case of a reference to a 3GPP document (including a GSM document), a non-specific 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 TS 36.213: “Evolved Universal Ter
41、restrial Radio Access (E-UTRA); Physical Layer Procedures“. 3 3GPP TS 36.322: “Evolved Universal Terrestrial Radio Access (E-UTRA); Radio Link Control (RLC) protocol specification”. 4 3GPP TS 36.323: “Evolved Universal Terrestrial Radio Access (E-UTRA); Packet Data Convergence Protocol (PDCP) Specif
42、ication”. 5 3GPP TS 36.212: “Evolved Universal Terrestrial Radio Access (E-UTRA); Multiplexing and channel coding”. 6 3GPP TS 36.214: “Evolved Universal Terrestrial Radio Access (E-UTRA); Physical layer; Measurements”. 7 3GPP TS 36.211: “Evolved Universal Terrestrial Radio Access (E-UTRA); Physical
43、Channels and Modulation”. 8 3GPP TS 36.331: “Evolved Universal Terrestrial Radio Access (E-UTRA); Radio Resource Control (RRC); Protocol specification”. 9 3GPP TS 36.133: “Evolved Universal Terrestrial Radio Access (E-UTRA); Requirements for support of radio resource management“. 10 3GPP TS 36.101:
44、“Evolved Universal Terrestrial Radio Access (E-UTRA); User Equipment (UE) radio transmission and reception“. 11 3GPP TS 36.216: “Evolved Universal Terrestrial Radio Access (E-UTRA); Physical layer for relaying operation“. 12 3GPP TS 36.306: “Evolved Universal Terrestrial Radio Access (E-UTRA); User
45、Equipment (UE) radio access capabilities“. 13 3GPP TS 23.303: “Proximity-based services (ProSe); Stage 2“. 14 3GPP TS 23.285: “Architecture enhancements for V2X services“. 15 3GPP TS 24.386: “User Equipment (UE) to V2X control function; protocol aspects; Stage 3“ 16 3GPP TS 26.114: “IP Multimedia Su
46、bsystem (IMS); Multimedia telephony; Media handling and interaction“. ETSI ETSI TS 136 321 V14.5.0 (2018-01)83GPP TS 36.321 version 14.5.0 Release 143 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the terms and definitions given in TR 21.905 1 and the follow
47、ing apply. A term defined in the present document takes precedence over the definition of the same term, if any, in TR 21.905 1. Active Time: Time related to DRX operation, as defined in subclause 5.7, during which the MAC entity monitors the PDCCH. mac-ContentionResolutionTimer: Specifies the numbe
48、r of consecutive subframe(s) during which the MAC entity 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 below). Figure 3.1-1: DRX Cycle drx-InactivityTimer: Except for NB
49、-IoT UEs, BL UEs or UEs in enhanced coverage, it specifies the number of consecutive PDCCH-subframe(s) after the subframe in which a PDCCH indicates an initial UL, DL or SL user data transmission for this MAC entity. For NB-IoT UEs, it specifies the number of consecutive PDCCH-subframe(s) after the subframe in which the HARQ RTT timer or UL HARQ RTT timer expires. For BL UEs or UEs in enhanced coverage, it specifies the number of consecutive PDCCH-subframe(s) following the subframe containing the last repetition of the PDCCH reception that
