1、 ETSI TS 1Universal Mobile TeEvolved Universal TerresSLm inter(3GPP TS 36.4TECHNICAL SPECIFICATION136 458 V13.0.0 (2016Telecommunications System (ULTE; restrial Radio Access Network (terface signalling transport 6.458 version 13.0.0 Release 1316-01) (UMTS); k (E-UTRAN); ) ETSI ETSI TS 136 458 V13.0.
2、0 (2016-01)13GPP TS 36.458 version 13.0.0 Release 13Reference RTS/TSGR-0336458vd00 Keywords LTE,UMTS 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 Sou
3、s-Prfecture de Grasse (06) N 7803/88 Important notice 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
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7、on of ETSI. The content of the PDF version shall 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 E
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9、 V13.0.0 (2016-01)23GPP TS 36.458 version 13.0.0 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,
10、and can be found in 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 t
11、he ETSI IPR Policy, 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. Fo
12、reword 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, UMTS identities or GSM identities. These should be interpreted as being references to the c
13、orresponding 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 “shall“, “shall not“, “should“, “should not“, “may“, “need not“, “will“, “will not“, “can“ and “
14、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 used in direct citation. ETSI ETSI TS 136 458 V13.0.0 (2016-01)33GPP TS 36.458 version 13.0.0 Re
15、lease 13Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 4g31 Scope 5g32 References 5g33 Definitions and abbreviations . 5g33.1 Definitions 5g33.2 Abbreviations . 5g34 SLm signalling bearer 6g34.1 Functions and protocol stack 6g35 Data link layer 6g36 IP l
16、ayer . 6g37 Transport layer . 6g3Annex A (informative): Change History 8g3History 9g3ETSI ETSI TS 136 458 V13.0.0 (2016-01)43GPP TS 36.458 version 13.0.0 Release 13Foreword This Technical Specification has been produced by the 3rdGeneration Partnership Project (3GPP). The contents of the present doc
17、ument are 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
18、: x the 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 in
19、cremented when editorial only changes have been incorporated in the document. ETSI ETSI TS 136 458 V13.0.0 (2016-01)53GPP TS 36.458 version 13.0.0 Release 131 Scope The present document specifies the standards for signalling transport to be used across the SLm interface. The SLm interface is a logic
20、al interface between the LMU and the E-SMLC in the E-UTRAN core network. The present document describes how the SLmAP signalling messages are transported over SLm. 2 References The following documents contain provisions which, through reference in this text, constitute provisions of the present docu
21、ment. 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 applies. In the case of a reference to a 3GPP document (includ
22、ing 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 IETF RFC 2460 (1998-12): “Internet Protocol, Version 6 (IPv6) Specification“. 3 IETF RFC 791(1
23、981-09): “Internet Protocol“. 4 IETF RFC 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 docum
24、ent, 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 the same term, if any, in TR 21.905 1. SLm: interface between an LMU and an E-SMLC, providing an interconnection point between the LMU and the E
25、-SMLC. It is also considered as a reference point. SLmAP: Reference point for the application protocol between LMU and E-SMLC. 3.2 Abbreviations For the purposes of the present document, the following abbreviations apply. E-SMLC E-UTRAN Serving Mobile Location Centre DiffServ Differentiated Service
26、IP Internet Protocol MME Mobility Management Entity PPP Point to Point Protocol SCTP Stream Control Transmission Protocol SLmAP SLm Application ProtocolUTDOA Uplink Time Difference of Arrival ETSI ETSI TS 136 458 V13.0.0 (2016-01)63GPP TS 36.458 version 13.0.0 Release 134 SLm signalling bearer 4.1 F
27、unctions and protocol stack SLm signalling bearer provides the following functions: - Provision of reliable transfer of SLmAP message over SLm interface. - Provision of networking and routeing function - Provision of redundancy in the signalling network - Support for flow control and congestion cont
28、rol The protocol stack for SLm signalling bearer is shown in figure 4.1 and details on each protocol are described in the following clauses. Figure 4.1: SLm signalling bearer protocol stack The transport network layer is based on IP transport, comprising SCTP on top of IP. 5 Data link layer The supp
29、ort of any suitable data link layer protocol, e.g. PPP, Ethernet, etc. , shall not be prevented. 6 IP layer The LMU and E-SMLC shall support IPv6 (IETF RFC 2460 2) and/or IPv4 (IETF RFC 791 3). The IP layer of SLmAP only supports point-to-point transmission for delivering SLmAP messages. The LMU and
30、 E-SMLC shall support the Diffserv Code Point marking as described in IETF RFC 2474 4. 7 Transport layer SCTP (IETF RFC 4960 5) shall be supported as the transport layer of SLmAP signalling bearer. The Payload Protocol Identifier assigned by IANA to be used by SCTP for the application layer protocol
31、 SLmAP is TBD. SCTP refers to the Stream Control 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 136 458 V13.0.0 (2016-01)73GPP TS 36.458 version 13.0.0 Release 13There shall be only o
32、ne SCTP association established between one E-SMLC and LMU pair. The LMU shall establish the SCTP association. The SCTP Destination Port number value assigned by IANA to be used for SLmAP is TBD. Within the SCTP association established between one E-SMLC and LMU pair: - a single pair of stream ident
33、ifiers shall be reserved for the sole use of SLmAP elementary procedures that utilize non UE-associated signalling. - At least one pair of stream identifiers shall be reserved for the sole use of SLmAP elementary procedures that utilize UE-associated signalling. However, a few pairs (i.e. more than
34、one) should be reserved. - A single UE-associated signalling 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 assi
35、gned with multiple IP addresses. SCTP end-points shall support a multi-homed remote SCTP end-point. For SCTP endpoint redundancy an INIT may be sent from E-SMLC, 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 c
36、ongestion control may, using an implementation specific mechanism, initiate higher layer protocols to reduce the signalling traffic at the source and prioritise certain messages. ETSI ETSI TS 136 458 V13.0.0 (2016-01)83GPP TS 36.458 version 13.0.0 Release 13Annex A (informative): Change History Chan
37、ge history Date TSG # TSG Doc. CR Rev Subject/Comment New 2012-12 58 RP-121768 Approved in RAN#58 and put under change control 11.0.0 2014-09 Update to Rel-12 version (MCC) 12.0.0 2015-12 Update to Rel-13 version (MCC) 13.0.0 ETSI ETSI TS 136 458 V13.0.0 (2016-01)93GPP TS 36.458 version 13.0.0 Release 13History Document history V13.0.0 January 2016 Publication
