1、 ETSI TS 1Evolved Universal TMedium Access Co(3GPP TS 36.3TECHNICAL SPECIFICATION136 321 V13.4.0 (2017LTE; l Terrestrial Radio Access (E-ontrol (MAC) protocol specifi.321 version 13.4.0 Release 1317-02) UTRA); ification 13) ETSI ETSI TS 136 321 V13.4.0 (2017-02)13GPP TS 36.321 version 13.4.0 Release
2、 13Reference RTS/TSGR-0236321vd40 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
3、The present document can be downloaded from: http:/www.etsi.org/standards-search The present document may be made available in electronic versions and/or in print. The content of any electronic and/or print versions of the present document shall not be modified without the prior written authorizatio
4、n of ETSI. In case of any existing or perceived difference in contents between such versions and/or in print, the only prevailing document is the print of the Portable Document Format (PDF) version kept on a specific network drive within ETSI Secretariat. Users of the present document should be awar
5、e that the document may be subject to revision or change of status. Information on the current status of this and other ETSI documents is available at https:/portal.etsi.org/TB/ETSIDeliverableStatus.aspx If you find errors in the present document, please send your comment to one of the following ser
6、vices: https:/portal.etsi.org/People/CommiteeSupportStaff.aspx Copyright Notification No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm except as authorized by written permission of ETSI. The content of the PDF version s
7、hall not be modified without the written authorization of ETSI. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2017. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTMand the ETSI logo are Trade Marks of ETSI registered
8、for the benefit of its Members. 3GPPTM and LTE are Trade Marks of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. GSM and the GSM logo are Trade Marks registered and owned by the GSM Association. ETSI ETSI TS 136 321 V13.4.0 (2017-02)23GPP TS 36.321 version 13
9、.4.0 Release 13Intellectual Property Rights 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 000 314: “Intell
10、ectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards“, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (https:/ipr.etsi.org/). Pursuant to the ETSI IPR Policy, no investigation, includ
11、ing 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. Foreword The present document may refer to tec
12、hnical specifications 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/queryf
13、orm.asp. Modal 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 “mu
14、st not“ are NOT allowed in ETSI deliverables except when used in direct citation. ETSI ETSI TS 136 321 V13.4.0 (2017-02)33GPP TS 36.321 version 13.4.0 Release 13Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 6g31 Scope 7g32 References 7g33 Definitions an
15、d abbreviations . 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 structur
16、e 15g34.5.1 Transport Channels . 15g34.5.2 Logical Channels 15g34.5.3 Mapping of Transport Channels to Logical Channels 16g34.5.3.1 Uplink mapping . 16g34.5.3.2 Downlink mapping 16g34.5.3.3 Sidelink mapping 17g35 MAC procedures 18g35.1 Random Access procedure . 18g35.1.1 Random Access Procedure init
17、ialization 18g35.1.2 Random Access Resource selection 20g35.1.3 Random Access Preamble transmission . 22g35.1.4 Random Access Response reception. 22g35.1.5 Contention Resolution 25g35.1.6 Completion of the Random Access procedure 26g35.2 Maintenance of Uplink Time Alignment 27g35.3 DL-SCH data trans
18、fer . 28g35.3.1 DL Assignment reception . 28g35.3.2 HARQ operation . 30g35.3.2.1 HARQ Entity. 30g35.3.2.2 HARQ process 30g35.3.3 Disassembly and demultiplexing 32g35.4 UL-SCH data transfer . 32g35.4.1 UL Grant reception . 32g35.4.2 HARQ operation . 33g35.4.2.1 HARQ entity . 33g35.4.2.2 HARQ process
19、34g35.4.3 Multiplexing and assembly . 36g35.4.3.1 Logical channel prioritization . 36g35.4.3.2 Multiplexing of MAC Control Elements and MAC SDUs . 38g35.4.4 Scheduling Request. 38g35.4.5 Buffer Status Reporting 38g35.4.5a Data Volume and Power Headroom Reporting 40g35.4.6 Power Headroom Reporting .
20、40g35.5 PCH reception 42g3ETSI ETSI TS 136 321 V13.4.0 (2017-02)43GPP TS 36.321 version 13.4.0 Release 135.6 BCH reception 42g35.7 Discontinuous Reception (DRX) 43g35.7a Discontinuous Reception (DRX) for SC-PTM . 45g35.8 MAC reconfiguration . 45g35.9 MAC Reset . 46g35.10 Semi-Persistent Scheduling 4
21、6g35.10.1 Downlink 47g35.10.2 Uplink . 47g35.11 Handling of unknown, unforeseen and erroneous protocol data 47g35.12 MCH reception . 47g35.13 Activation/Deactivation of SCells 48g35.14 SL-SCH Data transfer 49g35.14.1 SL-SCH Data transmission . 49g35.14.1.1 SL Grant reception and SCI transmission . 4
22、9g35.14.1.2 Sidelink HARQ operation . 50g35.14.1.2.1 Sidelink HARQ Entity . 50g35.14.1.2.2 Sidelink process . 51g35.14.1.3 Multiplexing and assembly . 51g35.14.1.3.1 Logical channel prioritization 52g35.14.1.3.2 Multiplexing of MAC SDUs . 52g35.14.1.4 Buffer Status Reporting . 52g35.14.2 SL-SCH Data
23、 reception 54g35.14.2.1 SCI reception. 54g35.14.2.2 Sidelink HARQ operation . 54g35.14.2.2.1 Sidelink HARQ Entity . 54g35.14.2.2.2 Sidelink process . 55g35.14.2.3 Disassembly and demultiplexing 55g35.15 SL-DCH data transfer . 55g35.15.1 SL-DCH data transmission . 55g35.15.1.1 Resource allocation . 5
24、5g35.15.1.2 Sidelink HARQ operation . 56g35.15.1.2.1 Sidelink HARQ Entity . 56g35.15.1.2.2 Sidelink process . 56g35.15.2 SL-DCH data reception 57g35.15.2.1 Sidelink HARQ operation . 57g35.15.2.1.1 Sidelink HARQ Entity . 57g35.15.2.1.2 Sidelink process . 57g35.16 SL-BCH data transfer . 58g35.16.1 SL-
25、BCH data transmission . 58g35.16.2 SL-BCH data reception . 58g36 Protocol Data Units, formats and parameters . 58g36.1 Protocol Data Units 58g36.1.1 General 58g36.1.2 MAC PDU (DL-SCH and UL-SCH except transparent MAC and Random Access Response, MCH) 59g36.1.3 MAC Control Elements 60g36.1.3.1 Buffer
26、Status Report MAC Control Elements . 60g36.1.3.1a Sidelink BSR MAC Control Elements 63g36.1.3.2 C-RNTI MAC Control Element 64g36.1.3.3 DRX Command MAC Control Element . 64g36.1.3.4 UE Contention Resolution Identity MAC Control Element 65g36.1.3.5 Timing Advance Command MAC Control Element . 65g36.1.
27、3.6 Power Headroom Report MAC Control Element . 65g36.1.3.6a Extended Power Headroom Report MAC Control Elements 66g36.1.3.6b Dual Connectivity Power Headroom Report MAC Control Element . 69g36.1.3.7 MCH Scheduling Information MAC Control Element . 70g36.1.3.7a Extended MCH Scheduling Information MA
28、C Control Element . 71g36.1.3.8 Activation/Deactivation MAC Control Elements . 72g36.1.3.9 Long DRX Command MAC Control Element 72g36.1.3.10 Data Volume and Power Headroom Report MAC Control Element 73g36.1.4 MAC PDU (transparent MAC) . 73g36.1.5 MAC PDU (Random Access Response) . 74g3ETSI ETSI TS 1
29、36 321 V13.4.0 (2017-02)53GPP TS 36.321 version 13.4.0 Release 136.1.6 MAC PDU (SL-SCH) . 75g36.2 Formats and parameters 77g36.2.1 MAC header for DL-SCH, UL-SCH and MCH 77g36.2.2 MAC header for Random Access Response . 79g36.2.3 MAC payload for Random Access Response . 79g36.2.4 MAC header for SL-SC
30、H . 79g37 Variables and constants 80g37.1 RNTI values . 80g37.2 Backoff Parameter values . 81g37.3 PRACH Mask Index values 83g37.4 Subframe_Offset values . 83g37.5 TTI_BUNDLE_SIZE value 83g37.6 DELTA_PREAMBLE values 83g37.7 HARQ RTT Timers 84g37.8 DL_REPETITION_NUMBER value . 84g37.9 UL_REPETITION_N
31、UMBER value . 84g3Annex A (normative): Handling of measurement gaps 85g3Annex B (normative): Contention resolution for RACH access 86g3Annex C (informative): Intended UE behaviour for DRX Timers 87g3Annex D (informative): Change history . 88g3History 94g3ETSI ETSI TS 136 321 V13.4.0 (2017-02)63GPP T
32、S 36.321 version 13.4.0 Release 13Foreword This Technical Specification (TS) has been produced by ETSI 3rd Generation Partnership Project (3GPP). The contents of the present document are subject to continuing work within the TSG and may change following formal TSG approval. Should the TSG modify the
33、 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 first digit: 1 presented to TSG for information; 2 presented to TSG for approval; 3 or greater indicates TSG approv
34、ed 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 incremented when editorial only changes have been incorporated in the document. ETSI ETSI TS 136 321 V13.4.0 (2017-02)73GPP T
35、S 36.321 version 13.4.0 Release 131 Scope The present document specifies the E-UTRA MAC protocol. 2 References The following documents contain provisions which, through reference in this text, constitute provisions of the present document. - References are either specific (identified by date of publ
36、ication, 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 applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly ref
37、ers 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 Terrestrial Radio Access (E-UTRA); Physical Layer Procedures“. 3 3GPP TS 36.322: Evolved Universal Terrestrial Radio Ac
38、cess (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) Specification. 5 3GPP TS 36.212: Evolved Universal Terrestrial Radio Access (E-UTRA); Multiplexing and channel coding. 6 3GPP
39、 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 Channels and Modulation. 8 3GPP TS 36.331: Evolved Universal Terrestrial Radio Access (E-UTRA); Radio Resource Control (RRC);
40、 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: “Evolved Universal Terrestrial Radio Access (E-UTRA); User Equipment (UE) radio transmission and reception“. 11 3GPP TS 36.216:
41、“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 Equipment (UE) radio access capabilities“. 13 3GPP TS 23.303: “Proximity-based services (ProSe); Stage 2“. ETSI ETSI TS 136 321
42、V13.4.0 (2017-02)83GPP TS 36.321 version 13.4.0 Release 133 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 following apply. A term defined in the present document takes precedence over the definition of t
43、he 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 number of consecutive subframe(s) during which the MAC entity shall monitor the PDCCH after Msg3
44、 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-IoT, it specifies the number of consecutive PDCCH-subframe(s) after the subframe in which
45、a PDCCH indicates an initial UL, DL or SL user data transmission for this MAC entity. For NB-IoT, it specifies the number of consecutive PDCCH-subframe(s) after the subframe in which the HARQ RTT timer or UL HARQ RTT timer expires. drx-RetransmissionTimer: Specifies the maximum number of consecutive
46、 PDCCH-subframe(s) until a DL retransmission is received. drxShortCycleTimer: Specifies the number of consecutive subframe(s) the MAC entity shall follow the Short DRX cycle. drxStartOffset: Specifies the subframe where the DRX Cycle starts. drx-ULRetransmissionTimer: Specifies the maximum number of
47、 consecutive PDCCH-subframe(s) until a grant for UL retransmission is received. HARQ information: HARQ information for DL-SCH or for UL-SCH transmissions consists of New Data Indicator (NDI), Transport Block (TB) size. For DL-SCH transmissions and for asynchronous UL HARQ, the HARQ information also
48、includes HARQ process ID, except for UEs in NB-IoT for which this information is not present. For UL-SCH transmission the HARQ information 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
49、. HARQ information for SL-SCH and SL-DCH transmissions consists of TB size only. HARQ RTT Timer: This parameter specifies the minimum amount of subframe(s) before a DL assignment for HARQ retransmission is expected by the MAC entity. 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 procedure. NB-IoT: NB-IoT allows access to network services via E-UTRA with a channel bandwidth limited to 180 kHz. N
