ETSI TS 136 462-2016 LTE Evolved Universal Terrestrial Radio Access Network (E-UTRAN) and wireless LAN (WLAN) Xw signalling transport (V13 0 0 3GPP TS 36 462 version 13 0 0 Release.pdf

1、 ETSI TS 1EvolvedRadio Access Network (Xw s(3GPP TS 36.4TECHNICAL SPECIFICATION136 462 V13.0.0 (2016LTE; ed Universal Terrestrial k (E-UTRAN) and Wireless LAsignalling transport .462 version 13.0.0 Release 1316-04) AN (WLAN); 13) ETSI ETSI TS 136 462 V13.0.0 (2016-04)13GPP TS 36.462 version 13.0.0 R

2、elease 13Reference DTS/TSGR-0336462vd00 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 n

3、otice 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 author

4、ization 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 b

5、e aware 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 http:/portal.etsi.org/tb/status/status.asp If you find errors in the present document, please send your comment to one of the following service

6、s: 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 shall

7、 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 2016. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTMand the ETSI logo are Trade Marks of ETSI registered for

8、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 136 462 V13.0.0 (2016-04)23GPP TS 36.462 version 13.0.0

9、 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: “Intellectu

10、al 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, including

11、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 Technical Specification (TS) has bee

12、n 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 deliverables. The cross refere

13、nce 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 interpreted as described in cl

14、ause 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 136 462 V13.0.0 (2016-04)33GPP TS 36.462 version 13.0.0 Release 13Contents Intellectual Property Rights 2g

15、3Foreword . 2g3Modal verbs terminology 2g3Foreword . 4g31 Scope 5g32 References 5g33 Definitions, symbols and abbreviations . 5g33.1 Definitions 5g33.2 Abbreviations . 5g34 Xw signalling bearer 6g34.1 Function and protocol stack 6g35 Data link layer 6g36 IP layer . 6g37 Transport layer . 6g3Annex A

16、(informative): Change history . 8g3History 9g3ETSI ETSI TS 136 462 V13.0.0 (2016-04)43GPP TS 36.462 version 13.0.0 Release 13Foreword This Technical Specification has been produced by the 3rdGeneration Partnership Project (3GPP). The contents of the present document are subject to continuing work wi

17、thin 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: 1 presented to TSG

18、 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 editorial only changes h

19、ave been incorporated in the document. ETSI ETSI TS 136 462 V13.0.0 (2016-04)53GPP TS 36.462 version 13.0.0 Release 131 Scope The present document specifies the standards for Signalling Transport to be used across the Xw interface. The Xw interface is a logical interface between the eNB and the WT.

20、The present document describes how the Xw-AP signalling messages are transported over Xw. 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,

21、 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 refers to t

22、he 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 RFC 2474 (1998-12): “Definition

23、 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, symbols and abbreviations 3.1 Definitions For the purposes of the present document, the terms and definitions given in TR 21.905 1 and the

24、 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. Xw: logical interface between eNB and WT. 3.2 Abbreviations For the purposes of the present document, the abbreviations given in 3GPP TR 21.905 1 and the following

25、apply. An abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in 3GPP TR 21.905 1. IANA Internet Assigned Numbers Authority IETF Internet Engineering Task Force PPP Point-to-Point Protocol RFC Request for CommentsSCTP Stream Control Tra

26、nsmission Protocol WT WLAN Termination ETSI ETSI TS 136 462 V13.0.0 (2016-04)63GPP TS 36.462 version 13.0.0 Release 134 Xw signalling bearer 4.1 Function and protocol stack Xw signalling bearer provides the following functions: - Provision of reliable transfer of Xw-AP message over Xw interface. - P

27、rovision of networking and routeing function; - Provision of redundancy in the signalling network; - Support for flow control and congestion control. The protocol stack for Xw Signalling Bearer is shown in figure 4.1-1 and details on each protocol are described in the following sections. SCTP IP Dat

28、a link layer Xw-AP Physical layer Radio Network Layer TransportNetworkLayer Figure 4.1-1: Xw 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 protocol, e.g. PPP, Ethernet

29、, etc., shall not be prevented. 6 IP layer The eNB shall support Ipv6 (IETF RFC 2460 2) and/or Ipv4 (IETF RFC 791 3). The IP layer of Xw only supports point-to-point transmission for delivering Xw-AP message. The eNB shall support the Diffserv Code Point marking as described in IETF RFC 2474 4. 7 Tr

30、ansport layer SCTP (IETF RFC 4960 5) shall be supported as the transport layer of Xw signalling bearer. The Payload Protocol Identifier assigned by IANA to be used by SCTP for the application layer protocol XwAP is 59. SCTP refers to the Stream Control Transmission Protocol developed by the Sigtran

31、working group of the IETF for the purpose of transporting various signalling protocols over IP network. ETSI ETSI TS 136 462 V13.0.0 (2016-04)73GPP TS 36.462 version 13.0.0 Release 13There shall be only one SCTP association established between one eNB and WT pair. The eNB shall establish the SCTP as

32、sociation. The SCTP Destination Port Number value assigned by IANA to be used for XwAP is 36462. Within the SCTP association established between an eNB and WT pair; - A single pair of stream identifiers shall be reserved for the sole use of XwAP elementary procedures that utilize non UE-associated s

33、ignalling. - At least one pair of stream identifiers shall be reserved for the sole use of XwAP elementary procedures that utilize UE-associated signalling. However a few pairs (i.e. more than one) should be reserved. - A single UE-associated signalling shall use one SCTP stream and the stream shoul

34、d not be changed during the communication of the UE-associated signalling. Transport network redundancy may be achieved by SCTP multi-homing between two endpoints, of which one or both is assigned with multiple IP addresses. SCTP endpoints shall support a multi-homed remote SCTP endpoint. For SCTP e

35、ndpoint redundancy an INIT may be sent from WT or eNB, at any time for an already established SCTP association, which shall be handled as defined in IETF RFC 4960 5 in sub-clause 5.2. The SCTP congestion control may, using an implementation specific mechanism, initiate higher layer protocols to redu

36、ce the signalling traffic at the source and prioritise certain messages. ETSI ETSI TS 136 462 V13.0.0 (2016-04)83GPP TS 36.462 version 13.0.0 Release 13Annex A (informative): Change history Change history Date TSG # TSG Doc. CR Rev Cat Subject/Comment New 2015-10 RAN3#89bis R3-152078 Xw signaling su

37、pport 0.1.0 2015-10 RAN3#89bis R3-152246 Xw_signaling support 0.1.0 2015-10 RAN3#89bis R3-152247 Draft_TS36462_Update 0.1.0 2015-11 RAN3#90 R3-152417 Draft_TS36462_Update 0.2.0 2015-11 RAN3#90 R3-152774 Draft_TS36462_Update 0.3.0 2015-11 RAN#70 RP-151865 Presentation Specification to TSG RAN#70 1.0.

38、0 2016-01 RAN3# Adhoc NB-IOT R3-160004 Editorial update: change Xw signaling support to Xw signaling transport 1.1.0 2016-01 RAN3# Adhoc NB-IOT R3-160123 Cover page update 1.2.0 2016-02 RAN3#91 R3-160155 Version update 1.3.0 2016-03 RAN#71 RP-160518 MCC clean up and version update 2.0.0 2016-03 RAN#71 Upgraded to Rel-13 and placed under change control 13.0.0 ETSI ETSI TS 136 462 V13.0.0 (2016-04)93GPP TS 36.462 version 13.0.0 Release 13History Document history V13.0.0 April 2016 Publication