1、 ETSI TS 136 412 V14.0.0 (2017-04) LTE; Evolved Universal Terrestrial Radio Access Network (E-UTRAN); S1 signalling transport (3GPP TS 36.412 version 14.0.0 Release 14) TECHNICAL SPECIFICATION ETSI ETSI TS 136 412 V14.0.0 (2017-04)13GPP TS 36.412 version 14.0.0 Release 14Reference RTS/TSGR-0336412ve
2、00 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 document can be dow
3、nloaded 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 authorization of ETSI. In case of any exist
4、ing 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 aware that the document may be subj
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6、eople/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 shall not be modified without th
7、e 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 for the benefit of its Members.
8、 3GPPTM and LTE are Trade Marks 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 Trade Marks registered and owned by the GSM Association. ETSI ETSI TS 136 412 V14.0.0 (2017-04)2
9、3GPP TS 36.412 version 14.0.0 Release 14Intellectual 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
10、 ETSI SR 000 314: “Intellectual 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,
11、 no investigation, 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. Foreword This Technic
12、al 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, UMTS identities or GSM identities. These should be interpreted as being references to the corresponding ETSI d
13、eliverables. 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 “shall“, “shall not“, “should“, “should not“, “may“, “need not“, “will“, “will not“, “can“ and “cannot“ are to be i
14、nterpreted 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 used in direct citation. ETSI ETSI TS 136 412 V14.0.0 (2017-04)33GPP TS 36.412 version 14.0.0 Release 14Contents In
15、tellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 4g31 Scope 5g32 References 5g33 Definitions and abbreviations . 5g33.1 Definitions 5g33.2 Abbreviations . 5g34 S1 signalling bearer 6g34.1 Functions and protocol stack 6g35 Data link layer 6g36 IP layer . 6g37 Transpor
16、t layer . 6g3Annex A (informative): Change History 8g3History 9g3ETSI ETSI TS 136 412 V14.0.0 (2017-04)43GPP TS 36.412 version 14.0.0 Release 14Foreword This Technical Specification has been produced by the 3rdGeneration Partnership Project (3GPP). The contents of the present document are subject to
17、 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 first digit:
18、 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 incremented when edito
19、rial only changes have been incorporated in the document. ETSI ETSI TS 136 412 V14.0.0 (2017-04)53GPP TS 36.412 version 14.0.0 Release 141 Scope The present document specifies the standards for signalling transport to be used across S1 interface. S1 interface is a logical interface between the eNB a
20、nd the E-UTRAN core network. The present document describes how the S1-AP signalling messages are transported over S1. 2 References The following documents contain provisions which, through reference in this text, constitute provisions of the present document. - References are either specific (ident
21、ified 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 applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific ref
22、erence 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 IETF RFC 2460 (1998-12): “Internet Protocol, Version 6 (IPv6) Specification“. 3 IETF RFC 791(1981-09): “Internet Protocol“. 4 IETF RF
23、C 2474 (1998-12): “Definition of the Differentiated Services Field (DS Field) in the IPv4 and IPv6 Headers“. 5 IETF RFC 4960 (2007-09): “Stream Control Transmission Protocol“. 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the terms and definitions given in
24、 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 TR 21.905 1. S1: interface between an eNB and an EPC, providing an interconnection point between the EUTRAN and the EPC. It is also considered as a reference
25、 point. S1-MME: Reference point for the control plane protocol between E-UTRAN and MME. 3.2 Abbreviations For the purposes of the present document, the following abbreviations apply. eNB E-UTRAN Node B EPC DiffServ Differentiated Service IP Internet Protocol MME Mobility Management Entity PPP Point
26、to Point Protocol SCTP Stream Control Transmission Protocol ETSI ETSI TS 136 412 V14.0.0 (2017-04)63GPP TS 36.412 version 14.0.0 Release 144 S1 signalling bearer 4.1 Functions and protocol stack S1 signalling bearer provides the following functions: - Provision of reliable transfer of S1-AP message
27、over S1-MME interface. - Provision of networking and routeing function - Provision of redundancy in the signalling network - Support for flow control and congestion control The protocol stack for S1 signalling bearer is shown in figure 4.1 and details on each protocol are described in the following
28、clauses. SCTP IP Data link layer S1-AP Physical layer Radio Network Layer TransportNetworkLayer Figure 4.1: S1-MME signalling bearer protocol stack The transport network layer is based on IP transport, comprising SCTP on top of IP. 5 Data link layer The support of any suitable data link layer protoc
29、ol, e.g. PPP, Ethernet, etc. , shall not be prevented. 6 IP layer The eNB and MME shall support IPv6 (IETF RFC 2460 2) and/or IPv4 (IETF RFC 791 3). The IP layer of S1-MME only supports point-to-point transmission for delivering S1-AP message. The eNB and MME shall support the Diffserv Code Point ma
30、rking as described in IETF RFC 2474 4. 7 Transport layer SCTP (IETF RFC 4960 5) shall be supported as the transport layer of S1-MME signalling bearer. The Payload Protocol Identifier assigned by IANA to be used by SCTP for the application layer protocol S1AP is 18. SCTP refers to the Stream Control
31、Transmission Protocol developed by the Sigtran working group of the IETF for the purpose of transporting various signalling protocols over IP network. ETSI ETSI TS 136 412 V14.0.0 (2017-04)73GPP TS 36.412 version 14.0.0 Release 14There shall be only one SCTP association established between one MME a
32、nd eNB pair. The eNB shall establish the SCTP association. The SCTP Destination Port number value assigned by IANA to be used for S1AP is 36412. Within the SCTP association established between one MME and eNB pair: - a single pair of stream identifiers shall be reserved for the sole use of S1AP elem
33、entary procedures that utilize non UE-associated signalling. - At least one pair of stream identifiers shall be reserved for the sole use of S1AP elementary procedures that utilize UE-associated signallings. However a few pairs (i.e. more than one) should be reserved. - A single UE-associated signal
34、ling shall use one SCTP stream and the stream should not be changed during the communication of the UE-associated signalling. Transport network redundancy may be achieved by SCTP multi-homing between two end-points, of which one or both is assigned with multiple IP addresses. SCTP end-points shall s
35、upport a multi-homed remote SCTP end-point. For SCTP endpoint redundancy an INIT may be sent from MME or eNB, at any time for an already established SCTP association, which shall be handled as defined in IETF RFC 4960 5 in subclause 5.2. The SCTP congestion control may, using an implementation speci
36、fic mechanism, initiate higher layer protocols to reduce the signalling traffic at the source and prioritise certain messages. ETSI ETSI TS 136 412 V14.0.0 (2017-04)83GPP TS 36.412 version 14.0.0 Release 14Annex A (informative): Change History TSG # TSG Doc. CR Rev Subject/Comment New 38 Specificati
37、on approved at TSG-RAN and placed under change control 8.0.0 39 RP-080077 0001 - Dedication of common streams over S1-MME 8.1.0 40 RP-080301 0004 - SCTP flow control and overload protection 8.2.0 40 RP-080301 0005 - Redundancy of the SCTP endpoint 8.2.0 41 RP-080583 0007 1 Correct the wording of com
38、mon and dedicated procedures 8.3.0 41 RP-080583 0008 Enhancing the understandability of section 7 TS 36.412 8.3.0 41 RP-080583 0009 Clarification of SCTP Congestion Indication over S1 8.3.0 42 RP-080845 0010 Removal of chapter 8 8.4.0 43 RP-090090 0011 1 The use of the number of stream ID for a UE-a
39、ssociated signalling 8.5.0 43 RP-090085 0012 1 Clarification of SCTP streams 8.5.0 43 RP-090083 0013 CR for FFS(es) on signalling bearer function 8.5.0 43 RP-090085 0015 1 Clarification the overload protection function support in SCTP 8.5.0 46 RP-091183 0016 1 Specification of SCTP destination port
40、number 8.6.0 12/2009 Creation of Rel-9 version based on v8.6.0 9.0.0 47 RP-100213 0018 Specification of Payload Identifier 9.1.0 12/2010 Creation of Rel-10 version based on v9.1.0 10.0.0 SP-49 SP-100629 Clarification on the use of References (TS 21.801 CR#0030) 10.0.1 52 RP-110685 0020 Correction to
41、 the References in 36.412 10.1.0 09/2012 Update to Rel-11 version (MCC) 11.0.0 09/2014 Update to Rel-12 version (MCC) 12.0.0 12/2015 Update to Rel-13 version (MCC) 13.0.0 Change history Date Meeting TDoc CR Rev Cat Subject/Comment New version 2017-03 SA#75 Promotion to Release 14 without technical change 14.0.0 ETSI ETSI TS 136 412 V14.0.0 (2017-04)93GPP TS 36.412 version 14.0.0 Release 14History Document history V14.0.0 April 2017 Publication
