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1、3GPP TS 23.228 V11.3.0 (2011-12)Technical Specification3rd Generation Partnership Project;Technical Specification Group Services and System Aspects;IP Multimedia Subsystem (IMS);Stage 2(Release 11)The present document has been developed within the 3rd Generation Partnership Project (3GPP TM) and may
2、 be further elaborated for the purposes of 3GPP.The present document has not been subject to any approval process by the 3GPP Organizational Partners and shall not be implemented.This Specification is provided for future development work within 3GPP only. The Organizational Partners accept no liabil
3、ity for any use of this Specification.Specifications and reports for implementation of the 3GPP TM system should be obtained via the 3GPP Organizational Partners Publications Offices.KeywordsLTE, GSM, UMTS, multimedia, packetmode, IP3GPPPostal address3GPP support office address650 Route des Lucioles
4、 - Sophia AntipolisValbonne - FRANCETel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16Internethttp:/www.3gpp.orgCopyright NotificationNo part may be reproduced except as authorized by written permission.The copyright and the foregoing restriction extend to reproduction in all media. 2011, 3GPP Organizat
5、ional Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC).All rights reserved.UMTS is a Trade Mark of ETSI registered for the benefit of its members3GPP is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational PartnersLTE is a Trade Mark of ETSI currently being regist
6、ered for the benefit of its Members and of the 3GPP Organizational PartnersGSM and the GSM logo are registered and owned by the GSM AssociationContentsForeword121Scope132References133Definitions, symbols and abbreviations163.1Definitions163.2Symbols183.3Abbreviations194IP multimedia subsystem concep
7、ts204.0General204.1Relationship to CS domain and the IP-Connectivity Access Network214.2IMS services concepts224.2.1Home-network based services224.2.1.1Support of CAMEL or IN224.2.1.2Support of OSA224.2.1.3Dynamic services interactions handling224.2.1.3.1Service information exchanged between Applica
8、tion Servers224.2.1.3.2Handling by the Application Server224.2.1.3.3Deletion of services interaction information224.2.2Support of numbers in non-international format in the IMS234.2.3Support of roaming users234.2.4IP multimedia Subsystem Service Control Interface (ISC)244.2.4aHSS to service platform
9、 Interface274.2.4bSCSCF Service Control Model284.2.4cI-CSCF to AS reference point (Ma)294.2.5The QoS requirements for an IM CN subsystem session304.2.6QoS Requirements for IM CN subsystem signalling314.2.7Support of SIP forking324.2.7.1SIP Forking324.2.7.2Forking within and outside the IM CN Subsyst
10、em324.2.7.3Support for forked requests334.3Naming and addressing concepts334.3.1Address management334.3.2Void334.3.3Identification of users334.3.3.0General334.3.3.1Private User Identities334.3.3.2Public User Identities344.3.3.2aGlobally Routable User Agent URI (GRUU)354.3.3.2a.1Architecture Requirem
11、ents354.3.3.2bWildcarded Public User Identity364.3.3.3Routing of SIP signalling within the IP multimedia subsystem364.3.3.3aHandling of dialled number formats374.3.3.3bTermination of session with the TEL URI format Public User Identity374.3.3.4Relationship of Private and Public User Identities374.3.
12、3.5Relationship of Public User Identities, GRUUs, and UEs384.3.4Identification of network nodes394.3.5E.164 address to SIP URI resolution in an IM CN subsystem394.3.5.1ENUM/DNS translation mechanism394.3.5.2Handling of Tel URIs394.3.5.3Handling of SIP URIs representing a telephone number404.3.6Publi
13、c Service Identities404.4Signalling concepts404.5Mobility related concepts414.6Roles of Session Control Functions424.6.0General424.6.1ProxyCSCF424.6.2InterrogatingCSCF434.6.2.0General434.6.2.1Void434.6.3ServingCSCF434.6.4Breakout Gateway Control Function454.6.5Void464.7Multimedia Resource Function46
14、4.7aMedia Resource Broker474.8Security Concepts474.9Charging Concepts474.10IMS group management concepts484.10.0General484.10.1IMS group administration484.10.2Group identifiers484.11Relationship to 3GPP Generic User Profile (GUP)484.12Network Address Translation traversal in access network484.13Iden
15、tification of IMS communication Services484.13.1General484.13.2Identification of IMS communication Services484.13.3Identification of IMS applications504.14Border Control concepts514.15IMS in transit network scenarios524.15.1General concepts524.15.2IMS transit network configurations524.15.3Providing
16、IMS application services in transit network scenarios524.15aRoaming Architecture for Voice over IMS with Local Breakout534.16Support of multimedia telephony544.16.1Telephony Application Server544.16.2Identification of multimedia telephony544.16.3Session setup principles544.17Support of short message
17、 service554.17.1IP Short Message Gateway (IP-SMGW)554.18Support of Number portability554.18.1Number portability554.19Support of Preferred Circuit Carrier Access and Per Call Circuit Carrier Selection564.19.1Preferred Circuit Carrier Access and Per Call Circuit Carrier Selection564.20Support of IMS S
18、ervice Centralization and Continuity564.21Support of Overlap Signalling564.22Support of Explicit Congestion Notification (ECN)564.22.1General564.22.2CS GERAN/UTRAN Interworking at MGCF/IM-MGW574.22.3Interworking with non-ECN IP network and/or terminal at IBCF/TrGW574.22.4Interworking with non-3GPP E
19、CN IP terminal at IBCF/TrGW584.22.5ECN support at IMS-ALG/IMS-AGW584.22.6ECN support at MRFC/MRFP594.22.7CS GERAN/UTRAN Interworking at the MSC Server enhanced for ICS/MSC Server enhanced for SRVCC with SIP/CS-MGW595IP multimedia subsystem procedures595.0General595.0aSession-unrelated procedures595.
20、1CSCF related procedures605.1.0Establishing IP-Connectivity Access Network bearer for IM CN Subsystem Related Signalling605.1.1Procedures related to ProxyCSCF discovery605.1.1.0General605.1.1.1DHCP/DNS procedure for PCSCF discovery605.1.1.2Void615.1.2Procedures related to ServingCSCF assignment615.1
21、.2.1Assigning a ServingCSCF for a user615.1.2.2Cancelling the ServingCSCF assignment625.1.2.3Void625.1.3Procedures related to InterrogatingCSCF625.1.4Procedures related to ProxyCSCF635.1.5Subscription Updating Procedures635.1.5.0General635.1.5.1Subscription updating information flow635.2Application
22、level registration procedures635.2.0General635.2.1Requirements considered for registration635.2.1aImplicit Registration645.2.1a.0General645.2.1a.1Implicit Registration for UE without ISIM or IMC665.2.2Registration flows665.2.2.1Requirements to consider for registration665.2.2.2Assumptions665.2.2.3Re
23、gistration information flow User not registered675.2.2.4Re-Registration information flow User currently registered685.2.2.5Stored information.705.3Application level de-registration procedures715.3.1Mobile initiated de-registration715.3.2Network initiated de-registration725.3.2.0General725.3.2.1Netwo
24、rk Initiated Application (SIP) De-registration, Registration Timeout735.3.2.2Network Initiated Application (SIP) De-registration, Administrative735.3.2.2.0General735.3.2.2.1Network Initiated De-registration by HSS, administrative745.3.2.2.2Network Initiated De-registration by Service Platform745.4Pr
25、ocedures for IP multi-media sessions765.4.0General765.4.1Bearer interworking concepts765.4.2Interworking with Internet765.4.2aIP version interworking765.4.3Interworking with PSTN775.4.4Requirements for IP multi-media session control785.4.5Session Path Information785.4.5.1Session Path Information dur
26、ing Registration and Session Initiation785.4.5.2PCSCF in the Session Path785.4.5.3SCSCF in the Session Path795.4.6End-user preferences and terminal capabilities795.4.6.0General795.4.6.1Objectives795.4.6.2End-user expectations795.4.6.3Mechanism for bearer establishment805.4.6.4Session progress indica
27、tion to the originating UE825.4.7Interaction between QoS and session signalling825.4.7.0General825.4.7.1Authorize QoS Resources835.4.7.1aResource Reservation with Policy and Charging Control835.4.7.2Enabling of Media Flows835.4.7.3Disabling of Media Flows845.4.7.4Revoke Authorization for IP-Connecti
28、vity Access Network and IP Resources845.4.7.5Indication of IP-Connectivity Access Network bearer release845.4.7.6Authorization of IP-Connectivity Access Network bearer modification845.4.7.7Indication of IP-Connectivity Access Network bearer modification845.4.8QoS-Assured Preconditions855.4.9Event an
29、d information distribution855.4.9.0General855.4.9.1Subscription to event notifications875.4.10Void885.4.11Signalling Transport Interworking885.4.12Configuration and Routing principles for Public Service Identities885.4.12.0General885.4.12.1PSIs on the originating side885.4.12.2PSIs on the terminatin
30、g side885.4.12.3Subdomain based PSIs895.4.12.4PSI configuration in the HSS895.4.12.5Requests originated by the AS hosting the PSI895.4.13Transcoding concepts905.4aOverview of session flow procedures905.4a.1End-to-End session flow procedures905.4a.2Transit network session flow procedures935.5ServingC
31、SCF/MGCF to servingCSCF/MGCF procedures955.5.0General955.5.1(S-S#1) Different network operators performing origination and termination955.5.2(S-S#2) Single network operator performing origination and termination975.5.3(S-S#3) Session origination with PSTN termination in the same network as the SCSCF
32、.1005.5.4(S-S#4) Session origination with PSTN termination in a different network from the SCSCF.1025.6Origination procedures1045.6.0General1045.6.1(MO#1) Mobile origination, roaming1045.6.2(MO#2) Mobile origination, home1075.6.3(PSTN-O) PSTN origination1095.6.4(NI-O) Non-IMS Origination procedure f
33、rom an external SIP client1105.6.5Application Server Origination Procedure1125.6.5.1(AS-O) Origination at Application Server1125.6.5.2Void1145.6.5.3SCSCF selection by ICSCF for AS Originating call procedures1145.7Termination procedures1165.7.0General1165.7.1(MT#1) Mobile termination, roaming1165.7.2
34、(MT#2) Mobile termination, home1195.7.2a(MT#3) Mobile termination, CS Domain roaming1215.7.3(PSTN-T) PSTN termination1215.7.4(NI-T) Non-IMS Termination to an external SIP client1235.7.5(AS-T#1) PSI based Application Server termination direct1255.7.6(AS-T#2) PSI based Application Server termination i
35、ndirect1255.7.7(AS-T#3) PSI based Application Server termination DNS routing1265.7.8(AST#4) Termination at Application Server based on service logic1275.7aProcedures for the establishment of sessions without preconditions1285.7a.1General1285.7a.2Procedures for the establishment of sessions without p
36、reconditions - no resource reservation required before session becomes active1305.7a.3Void1325.8Procedures related to routing information interrogation1325.8.0General1325.8.1User identity to HSS resolution1325.8.2SLF on register1335.8.3SLF on UE invite1345.8.4SLF on AS access to HSS1355.9Routing of
37、mid-session signalling1355.10Session release procedures1365.10.0General1365.10.1Terminal initiated session release1365.10.2PSTN initiated session release1385.10.3Network initiated session release1395.10.3.0Removal of IPCAN bearers used to transport IMS SIP signalling1395.10.3.1Network initiated sess
38、ion release - PCSCF initiated1395.10.3.1.0General1395.10.3.1.1Network initiated session release - PCSCF initiated after removal of IP-Connectivity Access Network bearer1405.10.3.1.2Void1415.10.3.2Network initiated session release - SCSCF Initiated1415.11Procedures to enable enhanced multimedia servi
39、ces1425.11.1Session Hold and Resume Procedures1425.11.1.0General1425.11.1.1Mobile-to-Mobile Session Hold and Resume Procedures1425.11.1.2Mobile-initiated Hold and Resume of a Mobile-PSTN Session1445.11.1.3PSTN-initiated Hold and Resume of a Mobile-PSTN Session1465.11.2Procedures for anonymous sessio
40、n establishment1485.11.2.0General1485.11.2.1Signalling requirements for anonymous session establishment1485.11.2.2Bearer path requirements for anonymous session establishment1485.11.3Procedures for codec and media characteristics flow negotiations1485.11.3.0General1485.11.3.1Codec and media characte
41、ristics flow negotiation during initial session establishment1495.11.3.2Codec or media characteristics flow change within the existing reservation1525.11.3.3Codec or media characteristics flow change requiring new resources and/or authorization1535.11.3.4Sample MM session flow - addition of another
42、media1565.11.4Procedures for providing or blocking identity1595.11.4.0General1595.11.4.1Procedures for providing the authenticated identity of the originating party1595.11.4.2Procedures for blocking the identity of the originating party1615.11.4.3Procedures for providing the authenticated identity o
43、f the originating party (PSTN origination)1625.11.4.4Procedures for providing the authenticated identity of the originating party (PSTN termination)1625.11.5Session Redirection Procedures1625.11.5.0General1625.11.5.1Session Redirection initiated by SCSCF to IMS1625.11.5.2Session Redirection to PSTN
44、Termination (SCSCF #2 forwards INVITE)1635.11.5.2aSession Redirection to PSTN Termination (REDIRECT to originating UE#1)1645.11.5.3Session Redirection initiated by SCSCF to general endpoint (REDIRECT to originating UE#1)1665.11.5.4Session Redirection initiated by PCSCF1675.11.5.5Session Redirection
45、initiated by UE1685.11.5.6Session Redirection initiated by originating UE#1 after Bearer Establishment (REDIRECT to originating UE#1)1695.11.6Session Transfer Procedures1705.11.6.0General1705.11.6.1Refer operation1705.11.6.2Application to Session Transfer Services1725.11.6.2.0General1725.11.6.2.1Blind Transfer and Assured Transfer1725.11.6.2.2Consultative Transfer1735.11.6.2.3Three-way Session1735.12Mobile Terminating call procedures to unregistered Public User Identities1745.12.0General1745.12.1Mobile Terminating call procedures to unregistered Public User Identity
