1、 ETSI TS 129 277 V15.0.0 (2018-07) Universal Mobile Telecommunications System (UMTS); LTE; Optimised handover procedures and protocol between EUTRAN access and non-3GPP accesses (S102); Stage 3 (3GPP TS 29.277 version 15.0.0 Release 15) TECHNICAL SPECIFICATION ETSI ETSI TS 129 277 V15.0.0 (2018-07)1
2、3GPP TS 29.277 version 15.0.0 Release 15Reference RTS/TSGC-0429277vf00 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 Sous-Prfecture
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9、S 129 277 V15.0.0 (2018-07)23GPP TS 29.277 version 15.0.0 Release 15Intellectual Property Rights Essential 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 E
10、TSI members and non-members, 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:/
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13、rademark and/or tradename. Mention of those trademarks in the present document does not constitute an endorsement 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 (
14、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 reference between GSM, UMTS, 3GPP and ETSI identities can be
15、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 clause 3.2 of the ETSI Drafting Rules (Verbal forms for t
16、he expression of provisions). “must“ and “must not“ are NOT allowed in ETSI deliverables except when used in direct citation. ETSI ETSI TS 129 277 V15.0.0 (2018-07)33GPP TS 29.277 version 15.0.0 Release 15Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 4g
17、31 Scope 5g32 References 5g33 Definitions, symbols and abbreviations . 5g33.1 Definitions 5g33.2 Abbreviations . 6g34 General . 6g34.1 Introduction 6g34.2 S102 Requirements. 6g35 S102 Header . 6g36 S102 Messages and Message Formats . 6g36.1 Introduction 6g36.1 Message Formats 7g36.2 S102 Messages .
18、7g36.2.1 A21-1x Air Interface Signalling message . 7g36.2.2 A21-Ack message . 7g36.2.3 A21-Event Notification . 7g36.3 Reliable Delivery of Signalling Messages 7g36.4 Information Elements . 7g36.4.1 Information Element Assignments . 7g36.4.1.1 A21 Message Type 8g36.4.1.2 Correlation ID . 8g36.4.1.3
19、Mobile Identity 8g36.4.1.4 Void. 8g36.4.1.5 Authentication Challenge Parameter (RAND) 8g36.4.1.6 A21 Mobile Subscription Information 8g36.4.1.7 Cause . 8g36.4.1.8 A21-Event . 9g36.4.1.9 GCSNA PDU 9g36.4.1.10 GCSNA Status 9g36.4.1.11 Reference Cell ID 9g36.4.1.12 Pilot List 9g36.4.1.13 Void. 9g37 Err
20、or Handling 9g37.1 Protocol Errors . 9g37.2 Restoration and Recovery 10g38 Security provided to Communication over the S102 Interface 10g39 S102 Parameters . 10g39.1 Timers 10g39.1.1 Introduction. 10g39.1.2 Acknowledgement Timer (Tack) 10g3Annex 1 (informative): Change history . 11g3History 12g3ETSI
21、 ETSI TS 129 277 V15.0.0 (2018-07)43GPP TS 29.277 version 15.0.0 Release 15Foreword This Technical Specification has been produced by the 3rdGeneration Partnership Project (3GPP). The contents of the present document are subject to continuing work within the TSG and may change following formal TSG a
22、pproval. 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 for information; 2 presented to TSG for approval;
23、 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 document. ETSI ETSI T
24、S 129 277 V15.0.0 (2018-07)53GPP TS 29.277 version 15.0.0 Release 151 Scope The present document specifies the stage 3 of the Evolved Packet System S102 interface between the MME and the 1x CS IWS to relay the 1xCS signalling messages documented in 3GPP TS 23.216 2 and 3GPP TS 23.272 4. 1x CS signal
25、ling messages are those messages that are defined for A21 interface as described in 3GPP2 A.S0008-D 3 and 3GPP2 A.S0009-D 6. The S102 interface messages shall be based on A21 messages. The S102 interface is used to support UEs that do not transmit and receive on both the LTE and 1x radio interfaces
26、simultaneously. S102 protocol aspects for SRVCC from E-UTRAN access to 3GPP2 1xCS is covered in this specification. Handling of non-voice component and protocol aspects for SRVCC from 3GPP2 1xCS to E-UTRAN direction is not specified in this release. The S102 interface is also used to support CS fall
27、back to 1xRTT procedures from E-UTRAN access to CDMA 1x RTT CS domain and to support SMS over S102 with the CDMA 1xRTT CS domain through support of registration over EPS procedures as specified in 3GPP TS 23.2724. 2 References The following documents contain provisions which, through reference in th
28、is text, constitute provisions of the present document. - 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 applie
29、s. In the case of a reference to a 3GPP document (including 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 3GPP TS 23.216: “Single Radio Voice Ca
30、ll Continuity (SRVCC)“. 3 3GPP2 A.S0008-D v1.0: “Interoperability Specification (IOS) for High Rate Packet Data (HRPD) Radio Access Network Interfaces with Session Control in the Access Network“. 4 3GPP TS 23.272:“ Circuit Switched Fallback in Evolved Packet System“. 5 3GPP TS 36.413: “Evolved Unive
31、rsal Terrestrial Radio Access (E-UTRA); S1 Application Protocol (S1AP)“. 6 3GPP2 A.S0009-D v1.0: “Interoperability Specification (IOS) for High Rate Packet Data (HRPD) Radio Access Network Interfaces with Session Control in the Packet Control Function“. 3 Definitions, symbols and abbreviations 3.1 D
32、efinitions 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 the same term, if any, in TR 21.905 1. ETSI ETSI TS 129 277 V15.0.0 (2018-07)63GPP TS 29.277 ver
33、sion 15.0.0 Release 153.2 Abbreviations For the purposes of the present document, the abbreviations given in TR 21.905 1 and the following apply. An abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in TR 21.905 1. 1xCS IWS 1xCS Inter
34、working Solution function for 3GPP2 1xCS GCSNA Generic Circuit Services Notification Application IMSI International Mobile Station Identity IP Internet Protocol MEID Mobile Equipment Identity MME Mobility Management Entity PDU Protocol Data Unit SRVCC Single Radio Voice Call Continuity UDP User Data
35、gram Protocol 4 General 4.1 Introduction The S102 application is based on UDP/IP transport medium. S102 (MME-to-IWS) /udp/23272 - This is the registered destination UDP port number to be used for signalling interconnection between an MME and an IWS for the S102 application. 4.2 S102 Requirements The
36、re are no additional requirments to those defined in 3GPP TS 23.216 2 and 3GPP2 A.S0008-D 3 and 3GPP2 A.S0009-D 6. 5 S102 Header The S102 message header shall be a fixed length header. The S102 header shall be at least 7 octets long. Octet 1 consists of A21 Message type and Octets 2-7 contain the Co
37、rrelation Identifier. Detailed information about the coding and format of the header fields of the A21 messages is specified in 3GPP2 A.S0008-D 3 and 3GPP2 A.S0009-D 6. 6 S102 Messages and Message Formats 6.1 Introduction The S102 application defines a set of messages between the MME and 1xCS IWS to
38、 provide SR VCC and CSFB. The messages to be used are described in the following sections. The S102 messages shall be based on A21 messages. The following A21 messages shall be used to support interworking and CS fallback to 1x RTT procedures between MME and 1xCS IWS. ETSI ETSI TS 129 277 V15.0.0 (2
39、018-07)73GPP TS 29.277 version 15.0.0 Release 156.1 Message Formats 6.2 S102 Messages 6.2.1 A21-1x Air Interface Signalling message This message is A21-1x air interface signalling message specified in 3GPP2 A.S0008-D 3 and 3GPP2 A.S0009-D 6. This message shall be sent from an MME or 1xCS IWS to tran
40、sport 1x air interface message to the peer 1xCS IWS or MME. The MME shall be provisioned to be able to reach a 1XCS IWS over the S102 interface. The IWS shall then decide which MSC to contact. The MME selects the 1XCS IWS based on the Reference Cell ID that it receives via the eNodeB. This message s
41、hall be used by the MME or 1xCS IWS during Registration, paging, handover (SRVCC) procedures, and mobile originated and mobile terminated SMS procedures. When the MME receives a 1x air interface message from the UE that is to be sent to 1xCS IWS, the MME encapsulates the 1x air interface message in
42、a A21-1x air interface signalling message and sends it to the 1xCS IWS via the S102 interface. To support CS fallback to 1xRTT registration procedures, it contains the CDMA 2000 sector ID. When sent from the 1xCS IWS to the MME, the 1xCS IWS encapsulates the 1x handoff direction message or 1xRTT CS
43、paging request (after successful registration for CS fallback to 1xRTT) into A21-1x air interface signalling message. Details about Information Element contents of A21-1x Air Interface signalling messages are found in 3GPP2 A.S0008-D 3 section 5.1.6.1. 6.2.2 A21-Ack message This message is A21-Ack m
44、essage specified in 3GPP2 A.S0008-D 3 and 3GPP2 A.S0009-D 6. This message shall be sent from an MME or 1xCS IWS to acknowledge receipt of some A21 message to the peer 1xCS IWS or MME. The Correlation ID in a A21-Ack message shall be copied from the request message that the MME or 1xCS IWS is replyin
45、g to. Details about Information Element contents of S102-Ack message are found in 3GPP2 A.S0008-D 3 section 5.1.6.2. 6.2.3 A21-Event Notification This message is A21-Event Notification message specified in 3GPP2 A.S0008-D 3 and 3GPP2 A.S0009-D 6. This message shall be sent by either MME or 1xCS IWS
46、to notify the peer node of a specific event. To support S102 tunnel redirection in case of MME relocation, “S102 Redirection“ value shall be used. To support notifying the 1xCS IWS, specifically if the UE switches off or if the MME changes the UE EMM state to EMM-DEREGISTERED, i.e. if the UE becomes
47、 unreachable, the “Power Down/Connection Closed Event“ value shall be used. Details about Information Element contents of S102-Event Notification message are found in 3GPP2 A.S0008-D 3 section 5.1.6.4. 6.3 Reliable Delivery of Signalling Messages The A21 messages are transmitted using best-effort se
48、rvice. 6.4 Information Elements 6.4.1 Information Element Assignments An A21 message may contain several information elements. Detailed information about the contents of the A21 messages is specified in 3GPP2 A.S0008-D 3 and 3GPP2 A.S0009-D 6. The following sections highlight the relevant S102 speci
49、fic parameters. ETSI ETSI TS 129 277 V15.0.0 (2018-07)83GPP TS 29.277 version 15.0.0 Release 156.4.1.1 A21 Message Type This IE is used to indicate the type of message on S102 interface. Typical values of this IE are as follows: Table 6.4.1.1-1: A21 Message Type on S102 interface Message Type A21 Message Name 01H A21-1x Air Interface Signalling message 02H A21-Ack message 04H A21-Event Notification message 6.4.1.2 Correlation ID This IE is used to correlate the A21 messages transported across the S102 interface. Det
