ETSI TS 129 173 V11.1.0 (2013-01) Technical Specification Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); LTE; Location Services (LCS); Diameter-based SLh interface for Control Plane LCS (3GPP TS 29.173 version 11.1.0 Release 11) 3GPP TS 29.173 version 11.1.0 Release 11 1 ETSI TS 129 173 V11.1.0 (2013-01) Reference RTS/TSGC-0429173vb10 Keywords GSM,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 à but non lucratif enregistrée à la Sous-Préfecture de Grasse (06) N° 7803/88 Important notice Individual copies of the present document can be downloaded from: http://www.etsi.org The present document may be made available in more than one electronic version or in print. 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ETSI 3GPP TS 29.173 version 11.1.0 Release 11 3 ETSI TS 129 173 V11.1.0 (2013-01) Contents Intellectual Property Rights ................................................................................................................................ 2 Foreword ............................................................................................................................................................. 2 Foreword ............................................................................................................................................................. 5 1 Scope ........................................................................................................................................................ 6 2 References ................................................................................................................................................ 6 3 Definitions, symbols and abbreviations ................................................................................................... 7 3.1 Definitions .......................................................................................................................................................... 7 3.2 Abbreviations ..................................................................................................................................................... 7 4 General Description .................................................................................................................................. 7 4.1 Introduction ........................................................................................................................................................ 7 4.2 Architecture Overview ....................................................................................................................................... 7 4.3 Functional Requirements of SLh Interface ......................................................................................................... 8 5 Diameter-based SLh Interface .................................................................................................................. 8 5.1 Introduction ........................................................................................................................................................ 8 5.2 Procedure Descriptions ....................................................................................................................................... 8 5.2.1 Send Routing Information for LCS ............................................................................................................... 8 5.2.1.1 General .................................................................................................................................................... 8 5.2.1.2 Detailed Behaviour of the HSS ............................................................................................................... 9 5.2.1.3 Detailed Behaviour of the GLMC ......................................................................................................... 10 6 Protocol Specification and Implementations .......................................................................................... 10 6.1 Introduction ...................................................................................................................................................... 10 6.1.1 Use of Diameter Base Protocol ................................................................................................................... 10 6.1.2 Securing Diameter Messages ...................................................................................................................... 10 6.1.3 Accounting Functionality ........................................................................................................................... 10 6.1.4 Use of Sessions ........................................................................................................................................... 11 6.1.5 Transport Protocol ...................................................................................................................................... 11 6.1.6 Routing Considerations ............................................................................................................................... 11 6.1.7 Advertising Application Support ................................................................................................................ 11 6.1.8 Diameter Application Identifier .................................................................................................................. 11 6.1.9 User Identity to HSS resolution .................................................................................................................. 11 6.2 Commands ........................................................................................................................................................ 12 6.2.1 Introduction................................................................................................................................................. 12 6.2.2 Command-Code values ............................................................................................................................... 12 6.2.3 LCS-Routing-Info-Request (RIR) Command ............................................................................................. 12 6.2.4 LCS-Routing-Info-Answer (RIA) Command ............................................................................................. 13 6.3 Result-Code AVP and Experimental-Result AVP Values ............................................................................... 14 6.3.1 General ........................................................................................................................................................ 14 6.3.2 Success ........................................................................................................................................................ 14 6.3.3 Permanent Failures ..................................................................................................................................... 14 6.3.3.1 DIAMETER_ERROR_USER_UNKNOWN (5001) ............................................................................ 14 6.3.3.2 DIAMETER_ERROR_UNAUTHORIZED_REQUESTING_NETWORK (5490) ............................. 14 6.3.4 Transient Failures ....................................................................................................................................... 14 6.3.4.1 DIAMETER_ERROR_ABSENT_USER (4201) .................................................................................. 14 6.4 AVPs ................................................................................................................................................................ 14 6.4.1 General ........................................................................................................................................................ 14 6.4.2 LMSI ........................................................................................................................................................... 15 6.4.3 Serving-Node .............................................................................................................................................. 15 6.4.4 MME-Name ................................................................................................................................................ 16 6.4.5 MSC-Number ............................................................................................................................................. 16 6.4.6 LCS-Capabilities-Sets ................................................................................................................................. 16 6.4.7 GMLC-Address .......................................................................................................................................... 16 6.4.8 Additional-Serving-Node ............................................................................................................................ 16 ETSI 3GPP TS 29.173 version 11.1.0 Release 11 4 ETSI TS 129 173 V11.1.0 (2013-01) 6.4.9 PPR-Address ............................................................................................................................................... 17 6.4.10 Feature-List-ID AVP .................................................................................................................................. 17 6.4.11 Feature-List AVP ........................................................................................................................................ 17 6.4.12 MME-Realm ............................................................................................................................................... 17 Annex A (informative): Change history ............................................................................................... 18 History .............................................................................................................................................................. 19 ETSI 3GPP TS 29.173 version 11.1.0 Release 11 5 ETSI TS 129 173 V11.1.0 (2013-01) Foreword This Technical Specification has been produced by the 3rd Generation Partnership Project (3GPP). The contents of the present document 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: 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 incremented when editorial only changes have been incorporated in the document. ETSI 3GPP TS 29.173 version 11.1.0 Release 11 6 ETSI TS 129 173 V11.1.0 (2013-01) 1 Scope The present document describes the Diameter-based SLh interface between the GMLC and the HSS defined for the Control Plane LCS in EPC. LCS procedures over the SLh interface are defined in the 3GPP TS 23.271 [2]. This specification defines the Diameter application for the GMLC-HSS, SLh reference point. The interactions between the HSS and the GMLC are specified, including the signalling flows. As LCS procedures over the Diameter-based SLh interface are identical to the MAP-based Lh interface, the descriptions of the Lh MAP operations defined in the 3GPP TS 29.002 [3] are mapped into the descriptions of the SLh Diameter commands. 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, 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 version of that document in the same Release as the present document. [1] 3GPP TR 21.905: "Vocabulary for 3GPP Specifications". [2] 3GPP TS 23.271: "Functional stage 2 description of Location Services (LCS)". [3] 3GPP TS 29.002: "Mobile Application Part (MAP) specification". [4] 3GPP TS 29.228: "IP multimedia (IM) Subsystem Cx Interface; Signalling flows and Message Elements". [5] IETF RFC 3588: "Diameter Base Protocol". [6] 3GPP TS 33.210: "3G security; Network Domain Security (NDS); IP network layer security". [7] IETF RFC 4960: "Stream Control Transport Protocol". [8] 3GPP TS 29.229: "Cx and Dx Interfaces based on the Diameter protocol; protocol details". [9] 3GPP TS 29.329: "Sh Interface based on the Diameter protocol; protocol details". [10] 3GPP TS 23.003: "Numbering, addressing and identification ". [11] 3GPP TS 23.012: "Location Management Procedures". [12] 3GPP TS 29.272: "Mobility Management Entity (MME) and Serving GPRS Support Node (SGSN) related interfaces based on Diameter protocol". [13] IETF RFC 2234: "Augmented BNF for syntax specifications". [14] 3GPP TS 29.234: "3GPP system to Wireless Local Area Network (WLAN) Interworking; Stage 3". [15] ITU-T Recommendation E.164: "The international public telecommunication numbering plan". ETSI 3GPP TS 29.173 version 11.1.0 Release 11 7 ETSI TS 129 173 V11.1.0 (2013-01) 3 Definitions, symbols and abbreviations 3.1 Definitions For the purposes of the present document, the terms and definitions given in 3GPP TR 21.905 [1], 3GPP TS 23.271 [2] 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]. 3.2 Abbreviations For the purposes of the present document, the abbreviations given in 3GPP 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 3GPP TR 21.905 [1]. ABNF Augmented Backus-Naur form AVP Attribute Value Pair H-GMLC Home-Gateway Mobile Location Centre IANA Internet Assigned Numbers Authority PMD Pseudonym mediation device functionality PPR Privacy Profile Register R-GMLC Requesting-Gateway Mobile Location Centre RFC Request For Comments V-GMLC Visited-Gateway Mobile Location Centre 4 General Description 4.1 Introduction The SLh reference point between the GMLC and the HSS is defined in the 3GPP TS 23.271 [2]. This document describes the Diameter-based SLh interface related procedures, message parameters and protocol specifications. 4.2 Architecture Overview The architecture for support of Location Services in GSM, UMTS and EPS has been defined in 3GPP TS 23.271 [2] and the relevant network elements and interfaces are shown in the figure 4.2-1. ETSI 3GPP TS 29.173 version 11.1.0 Release 11 8 ETSI TS 129 173 V11.1.0 (2013-01) HSS SLh GMLC Le SLg Lg Lg Lpp Lid La External MSC/ AAA MME SGSN PPR PMD LCS Client MSC Server Server Figure 4.2-1: Overview of the LCS Functional Architecture In this architecture, the SLh interface is defined between the Gateway Mobile Location Center (GMLC) and the Home Subscriber Server (HSS) to allow the GMLC to request routing information from the HLR or HSS. 4.3 Functional Requirements of SLh Interface The requirements for SLh interface are defined in 3GPP TS 23.271 [2]. The SLh interface is used by the GMLC to request routing information from the HSS i.e. the address of the H-GMLC, and/or the address of the visited MSC/MSC server, SGSN, 3GPP AAA server or MME for a particular target UE whose location has been requested. 5 Diameter-based SLh Interface 5.1 Introduction This section describes the Diameter-based SLh interface related procedures and Information elements exchanged between functional entities. In the tables that describe the Information Elements transported by each Diameter command, each Information Element is marked as (M) Mandatory, (C) Conditional or (O) Optional in the "Cat." column. For the correct handling of the Information Element according to the category type, see the description detailed in section 6 of the 3GPP TS 29.228 [4]. 5.2 Procedure Descriptions 5.2.1 Send Routing Information for LCS 5.2.1.1 General This procedure is used between the GMLC and the HSS. The procedure is invoked by the GMLC and is used: - To retrieve routing information for LCS for a specified user from the HSS. ETSI 3GPP TS 29.173 version 11.1.0 Release 11 9 ETSI TS 129 173 V11.1.0 (2013-01) This procedure is mapped to the commands LCS-Routing-Info-Request/Answer in the Diameter application specified in chapter 6. Tables 5.2.1.1/1 and 5.2.1.1/2 detail the involved information elements. Table 5.2.1.1/1: Send Routing Information for LCS (SLh-LCS-SRI) Information Mapping to Cat. Description element name Diameter AVP IMSI User-Name C This information element shall contain the IMSI of the targeted user. This IE shall be present if the MSISDN is absent. MSISDN MSISDN C This information element shall contain the MSISDN of the targeted user. This IE shall be present if the IMSI is absent. GMLC Number GMLC-Number O This information element shall contain the ISDN (E.164) number of the requesting GMLC. Supported Features Supported-Features O If present, this information element shall contain the list of (See 3GPP TS features supported by the origin host. 29.229 [8]) Table 5.2.1.1/2: Send Routing Information for LCS (SLh-LCS-SRI) Resp Information Mapping to Cat. Description element Diameter AVP name Result Result-Code / M Result of the request. (See 5.3.5) Experimental- Result-Code AVP shall be used for errors defined in the Diameter Base Result Protocol. Experimental-Result AVP shall be used for SLh errors. This is a grouped AVP which contains the 3GPP Vendor ID in the Vendor-Id AVP, and the error code in the Experimental-Result-Code AVP. IMSI User-Name C This information element shall contain the IMSI of the targeted user. This IE shall be present if the MSISDN is absent. MSISDN MSISDN C This information element shall contain the MSISDN of the targeted user. This IE shall be present if the IMSI is absent. LMSI LMSI C This information element shall contain the LMSI allocated by the VLR. If available in the HSS, this IE shall be present only when the Result- Code is DIAMETER_SUCCESS and the serving node is a VLR. Serving Node Serving-Node C This information element shall contain the information about the network node serving the targeted user i.e. the name/number of the serving node (MME, SGSN, 3GPP AAA server or MSC/MSC server), the LCS capabilities sets supported by the serving node and the IP address of the visited GMLC associated with the serving node. This IE shall be present only when the Result- Code is DIAMETER_SUCCESS. Additional Additional- C This information element shall contain the information about another Serving Node Serving-Node network node serving the targeted user. This IE shall be present only when the Result- Code is DIAMETER_SUCCESS. There may be multiple instances of this IE in the response provided by the HSS. Home GMLC GMLC-Address C This information element shall contain the IP address of the H-GMLC. This Address IE shall be present only when the Result-Code is DIAMETER_SUCCESS. PPR Address PPR-Address C This information element shall contain the IP address of the Privacy Profile Register (PPR). If available in the HSS, this IE shall be present only when the Result-Code is DIAMETER_SUCCESS. Supported Supported- O If present, this information element shall contain the list of features Features Features supported by the origin host. (See 3GPP TS 29.229 [8]) 5.2.1.2 Detailed Behaviour of the HSS Upon reception of the Send Routing Info for LCS request, the HSS shall, in the following order: ETSI