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ETSI TS 138 331-2018 5G NR Radio Resource Control (RRC) Protocol specification (V15 2 1 3GPP TS 38 331 version 15 2 1 Release 15).pdf

1、 ETSI TS 138 331 V15.2.1 (2018-06) 5G; NR; Radio Resource Control (RRC); Protocol specification (3GPP TS 38.331 version 15.2.1 Release 15) TECHNICAL SPECIFICATION ETSI ETSI TS 138 331 V15.2.1 (2018-06)13GPP TS 38.331 version 15.2.1 Release 15Reference RTS/TSGR-0238331vf21 Keywords 5G ETSI 650 Route

2、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 document can be downloaded from: http:/www.etsi.or

3、g/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 authorization of ETSI. In case of any existing or perceived difference in

4、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 aware that the document may be subject to revision or change of st

5、atus. 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 services: https:/portal.etsi.org/People/CommiteeSupportStaff.aspx

6、 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 shall not be modified without the written authorization of ETSI

7、. The copyright and the foregoing restriction extend to reproduction in all media. ETSI 2018. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTMand the ETSI logo are trademarks of ETSI registered for the benefit of its Members. 3GPPTM and LTETMare trademarks of ETSI registered for the benefit of its M

8、embers and of the 3GPP Organizational Partners. oneM2M logo is protected for the benefit of its Members. GSMand the GSM logo are trademarks registered and owned by the GSM Association. ETSI ETSI TS 138 331 V15.2.1 (2018-06)23GPP TS 38.331 version 15.2.1 Release 15Intellectual Property Rights Essenti

9、al patents IPRs essential or potentially essential to normative deliverables 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: “Intellectual Property Rights (IPRs);

10、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, including IPR searches, has been carr

11、ied 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 document may include trademarks and/or tradenames whic

12、h are asserted and/or registered by their owners. ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does not constitute an en

13、dorsement 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 specifications or reports using their 3GPP identities

14、, 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. Modal verbs terminology In the present document “sh

15、all“, “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 NOT allowed in ETSI deliverables except when use

16、d in direct citation. ETSI ETSI TS 138 331 V15.2.1 (2018-06)33GPP TS 38.331 version 15.2.1 Release 15Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 11g31 Scope 12g32 References 12g33 Definitions, symbols and abbreviations . 13g33.1 Definitions 13g33.2 Ab

17、breviations . 13g34 General . 15g34.1 Introduction 15g34.2 Architecture 15g34.2.1 UE states and state transitions including inter RAT . 15g34.2.2 Signalling radio bearers 18g34.3 Services 18g34.3.1 Services provided to upper layers . 18g34.3.2 Services expected from lower layers 18g34.4 Functions 18

18、g35 Procedures 19g35.1 General . 19g35.1.1 Introduction. 19g35.1.2 General requirements 19g35.2 System information 19g35.2.1 Introduction. 20g35.2.2 System information acquisition 20g35.2.2.1 General UE requirements 20g35.2.2.2 SI validity and need to (re)-acquire SI 21g35.2.2.2.1 SI validity 21g35.

19、2.2.2.2 SI change indication and PWS notification . 21g35.2.2.3 Acquisition of System Information . 22g35.2.2.3.1 Acquisition of MIB and SIB1 . 22g35.2.2.3.2 Acquisition of an SI message 22g35.2.2.3.3 Request for on demand system information 23g35.2.2.4 Actions upon receipt of SI message 24g35.2.2.4

20、.1 Actions upon reception of the MIB 24g35.2.2.4.2 Actions upon reception of the SystemInformationBlockType1 24g35.2.2.4.3 Actions upon reception of SystemInformationBlockTypeX . 24g35.2.2.5 Essential system information missing . 24g35.3 Connection control . 25g35.3.1 Introduction. 25g35.3.2 Paging

21、. 25g35.3.3 RRC connection establishment . 25g35.3.4 Initial security activation 25g35.3.5 RRC reconfiguration . 25g35.3.5.1 General 25g35.3.5.2 Initiation 26g35.3.5.3 Reception of an RRCReconfiguration by the UE 26g35.3.5.4 Secondary cell group release . 27g35.3.5.5 Cell Group configuration 27g35.3

22、.5.5.1 General 27g35.3.5.5.2 Reconfiguration with sync . 28g35.3.5.5.3 RLC bearer release 28g35.3.5.5.4 RLC bearer addition/modification . 28g35.3.5.5.5 MAC entity configuration . 29g3ETSI ETSI TS 138 331 V15.2.1 (2018-06)43GPP TS 38.331 version 15.2.1 Release 155.3.5.5.6 RLF Timers 2 presented to T

23、SG 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 incremented when editorial only changes have been incorporated in the docum

24、ent. ETSI ETSI TS 138 331 V15.2.1 (2018-06)123GPP TS 38.331 version 15.2.1 Release 151 Scope The present document specifies the Radio Resource Control protocol for the radio interface between UE and NG-RAN. The scope of the present document also includes: - the radio related information transported

25、in a transparent container between source gNB and target gNB upon inter gNB handover; - the radio related information transported in a transparent container between a source or target gNB and another system upon inter RAT handover. - the radio related information transported in a transparent contain

26、er between a source eNB and target gNB during E-UTRA-NR Dual Connectivity. 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 publication, edition number

27、, 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 refers to the latest versi

28、on of that document in the same Release as the present document. 1 3GPP TR 21.905: “Vocabulary for 3GPP Specifications“. 2 3GPP TS 38.300: “NR; Overall description; Stage 2“. 3 3GPP TS 38.321: “NR; Medium Access Control (MAC); Protocol specification“. 4 3GPP TS 38.322: “NR; Radio Link Control (RLC)

29、protocol specification“. 5 3GPP TS 38.323: “NR; Packet Data Convergence Protocol (PDCP) protocol specification“. 6 ITU-T Recommendation X.680 (08/2015) “Information Technology - Abstract Syntax Notation One (ASN.1): Specification of basic notation“ (Same as the ISO/IEC International Standard 8824-1)

30、. 7 ITU-T Recommendation X.681 (08/2015) “Information Technology - Abstract Syntax Notation One (ASN.1): Information object specification“ (Same as the ISO/IEC International Standard 8824-2). 8 ITU-T Recommendation X.691 (08/2015) “Information technology - ASN.1 encoding rules: Specification of Pack

31、ed Encoding Rules (PER)“ (Same as the ISO/IEC International Standard 8825-2). 9 3GPP TS 38.215: “NR; Physical layer measurements“. 10 3GPP TS 36.331: “Evolved Universal Terrestrial Radio Access (E-UTRA) Radio Resource Control (RRC); Protocol Specification“. 11 3GPP TS 33.501: “Security Architecture

32、and Procedures for 5G System“. 12 3GPP TS 38.104: “NR; Base Station (BS) radio transmission and reception“. 13 3GPP TS 38.213: “NR; Physical layer procedures for control“. 14 3GPP TS 38.133: “NR; Requirements for support of radio resource management“. ETSI ETSI TS 138 331 V15.2.1 (2018-06)133GPP TS

33、38.331 version 15.2.1 Release 1515 3GPP TS 38.101: “NR; User Equipment (UE) radio transmission and reception“. 16 3GPP TS 38.211: “NR; Physical channels and modulation“. 17 3GPP TS 38.212: “NR; Multiplexing and channel coding“. 18 ITU-T Recommendation X.683 (08/2015) “Information Technology - Abstra

34、ct Syntax Notation One (ASN.1): Parameterization of ASN.1 specifications“ (Same as the ISO/IEC International Standard 8824-4). 19 3GPP TS 38.214: “NR; Physical layer procedures for data“. 20 3GPP TS 38.304: “NR; User Equipment (UE) procedures in Idle mode and RRC Inactive state“. 3 Definitions, symb

35、ols and abbreviations 3.1 Definitions For the purposes of the present document, the terms and definitions given in 3GPP TR 21.905 1 and the following apply. A term defined in the present document takes precedence over the definition of the same term, if any, in 3GPP TR 21.905 1. Field: The individua

36、l contents of an information element are referred as fields. Floor: Mathematical function used to round down i.e. to the nearest integer having a lower or equal value. Information element: A structural element containing a single or multiple fields is referred as information element. Primary Cell: T

37、he MCG cell, operating on the primary frequency, in which the UE either performs the initial connection establishment procedure or initiates the connection re-establishment procedure. Primary SCG Cell: For dual connectivity operation, the SCG cell in which the UE performs random access when performi

38、ng the Reconfiguration with Sync procedure. PUCCH SCell: An SCell configured with PUCCH. RLC bearer configuration: The lower layer part of the radio bearer configuration comprising the RLC and logical channel configurations. Secondary Cell: For a UE configured with CA, a cell providing additional ra

39、dio resources on top of Special Cell. Secondary Cell Group: For a UE configured with dual connectivity, the subset of serving cells comprising of the PSCell and zero or more secondary cells. Serving Cell: For a UE in RRC_CONNECTED not configured with CA/DC there is only one serving cell comprising o

40、f the primary cell. For a UE in RRC_CONNECTED configured with CA/ DC the term serving cells is used to denote the set of cells comprising of the Special Cell(s) and all secondary cells. Special Cell: For Dual Connectivity operation the term Special Cell refers to the PCell of the MCG or the PSCell o

41、f the SCG, otherwise the term Special Cell refers to the PCell. SRB1S: The SCG part of MCG split SRB1 for EN-DC. SRB2S: The SCG part of MCG split SRB2 for EN-DC. 3.2 Abbreviations For the purposes of the present document, the abbreviations given in 3GPP TR 21.905 1 and the following apply. An abbrev

42、iation defined in the present document takes precedence over the definition of the same abbreviation, if any, in 3GPP TR 21.905 1. 5GC 5G Core Network ACK Acknowledgement AM Acknowledged Mode ETSI ETSI TS 138 331 V15.2.1 (2018-06)143GPP TS 38.331 version 15.2.1 Release 15ARQ Automatic Repeat Request

43、 AS Access Stratum ASN.1 Abstract Syntax Notation One BLER Block Error Rate BWP Bandwidth PartCA Carrier Aggregation CCCH Common Control Channel CG Cell Group CMAS Commercial Mobile Alert Service CP Control Plane C-RNTI Cell RNTI CSI Channel State Information DC Dual Connectivity DCCH Dedicated Cont

44、rol Channel DCI Downlink Control InformationDL DownlinkDL-SCH Downlink Shared Channel DRB (user) Data Radio Bearer DRX Discontinuous Reception DTCH Dedicated Traffic Channel EPC Evolved Packet Core EPS Evolved Packet System ETWS Earthquake and Tsunami Warning System E-UTRA Evolved Universal Terrestr

45、ial Radio Access E-UTRAN Evolved Universal Terrestrial Radio Access Network FDD Frequency Division Duplex FFS For Further Study GERAN GSM/EDGE Radio Access Network GNSS Global Navigation Satellite System GSM Global System for Mobile Communications HARQ Hybrid Automatic Repeat Request IE Information

46、element IMSI International Mobile Subscriber Identity kB Kilobyte (1000 bytes) L1 Layer 1L2 Layer 2L3 Layer 3MAC Medium Access Control MCG Master Cell Group MIB Master Information Block N/A Not Applicable PCell Primary Cell PDCP Packet Data Convergence Protocol PDU Protocol Data Unit PLMN Public Lan

47、d Mobile Network PSCell Primary Secondary Cell QoS Quality of Service RAN Radio Access Network RAT Radio Access Technology RLC Radio Link Control RNTI Radio Network Temporary Identifier ROHC RObust Header Compression RRC Radio Resource Control RS Reference Signal SCell Secondary CellSCG Secondary Ce

48、ll Group SFN System Frame Number SFTD SFN and Frame Timing Difference SI System Information SIB System Information Block SpCell Special Cell SRB Signalling Radio Bearer ETSI ETSI TS 138 331 V15.2.1 (2018-06)153GPP TS 38.331 version 15.2.1 Release 15SSB Synchronization Signal Block TAG Timing Advance

49、 Group TDD Time Division Duplex TM Transparent ModeUE User Equipment UL Uplink UM Unacknowledged Mode UP User Plane In the ASN.1, lower case may be used for some (parts) of the above abbreviations e.g. c-RNTI. 4 General 4.1 Introduction This specification is organised as follows: - sub-clause 4.2 describes the RRC protocol model; - sub-clause 4.3 specifies the services provided to upper layers as well as the services expected from lower layers; - sub-clause 4.4 lists the RRC functions; - clause 5 specifies RRC procedures, inc

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