TR 24.819
Protocol impact from providing IMS services via Fixed Broadband

3GPP‑Page ToC_↓

V7.0.0 (Wzip) 2005/12 54 p.

Rapporteur:: Mr. Leis, Peter
Nokia Networks

full Table of Contents for TR 24.819 Word version: 7.0.0

1 Scope p. 7

The present document is a temporary container for the functional models, flows and protocol details for the IM CN subsystem behaviour when providing IMS services via fixed broadband access. This service is based on the Session Initiation Protocol (SIP), the Session Description Protocol (SDP), other protocols, the Gq interface and the Cx interface. The contents of this report will be moved into appropriate 3GPP Technical Specifications.

The document focuses on scenarios where a non-3GPP terminal is connected via a fixed broadband access network to the IMS.

Where possible the present document specifies the requirements for the above mentioned protocols by reference to specifications produced by the IETF within the scope of SIP, SDP and other protocols, either directly, or as modified by 3GPP specifications. Where this is not possible, extensions are defined within the present document..

TR 24.819 Protocol impact from providing IMS services via Fixed Broadband

full Table of Contents for TR 24.819 Word version: 7.0.0

1 Scope p. 7

2 References p. 7

3 Definitions, symbols and abbreviations p. 10

3.1 Definitions p. 10

3.2 Symbols p. 10

3.3 Abbreviations p. 10

4 IMS services via fixed broadband overview p. 10

5 Application Usage of SIP p. 11

5.1 Profiles of IETF RFCs for 3GPP usage p. 11

5.2 Interoperability with different IP-CAN p. 16

5.3 Void

5.4 P-Access-Network-Info header p. 16

5.4.1 Introduction p. 16

5.4.2 Syntax p. 17

5.4.3 Additional coding rules for P-Access-Network-Info header p. 17

5.5 P-Charging-Vector header p. 18

5.5.1 Introduction p. 18

5.5.2 Syntax p. 18

5.5.2.1 General p. 18

5.5.2.2 xDSL as IP-CAN p. 19

5.6 Handling of the IPCan p. 19

5.7 IP-Connectivity Access Network specific concepts when using xDSL to access IM CN subsystem p. 19

5.7.1 Scope p. 20

5.7.2 xDSL aspects when connected to the IM CN subsystem p. 20

5.7.2.1 Introduction p. 20

5.7.2.2 Procedures at the UE p. 20

5.7.2.2.1 P-CSCF discovery p. 20

5.7.2.2.1.1 P-CSCF discovery p. 20

5.7.2.2.1.2 Procedure at the UE when using IPv4 p. 20

5.7.2.2.1.3 Procedure at the UE when using IPv6 p. 20

5.7.2.2.2 xDSL bearer provisioning p. 21

5.7.2.2.2.1 Statically provisioned xDSL bearer(s) p. 21

5.7.2.2.3 xDSL bearer(s) for media p. 21

5.7.2.2.3.1 General requirements p. 21

5.7.2.2.3.2 Media grouping p. 21

5.7.2.2.3.3 Media authorization p. 21

5.7.2.2.3.4 Special requirements applying to forked responses p. 21

5.7.3 SIP timers p. 21

5.7.3.1 SIP timers between IM CN subsystem entities p. 21

5.7.4 SIP compression procedures p. 22

5.7.4.1 SIP compression p. 23

5.7.4.2 Compression of SIP requests and responses transmitted to the P-CSCF p. 23

5.7.4.3 Decompression of SIP requests and responses received from the P-CSCF p. 23

5.7.4.4 Compression of SIP requests and responses transmitted to the UE p. 24

5.7.5 Void

5.7.6 Void

5.7.7 Profile changes for compression p. 24

5.7.7.1 Roles p. 24

5.7.7.2 UE major capabilities p. 25

5.7.8 Support of SIP for SigComp p. 25

5.7.8.1 Requests initiated by the UE p. 25

5.7.8.2 Requests terminated by the UE p. 29

5.8 IP version considerations for fixed broadband p. 32

5.8.1 URI and address assignments p. 32

5.8.2 Impacts on S-CSCF p. 33

5.8.3 Impacts on UE p. 36

5.9 Additional procedures in support for hosted NAT p. 36

5.9.1 Scope p. 36

5.9.2 P-CSCF usage of SIP p. 37

5.9.2.1 Introduction p. 37

5.9.2.2 Registration p. 37

5.9.2.3 General treatment for all dialogs and standalone transactions excluding the REGISTER method p. 37

5.9.2.3.1 Introduction p. 37

5.9.2.3.2 Request initiated by the UE p. 37

5.9.2.3.3 Request terminated by the UE p. 37

5.9.3 P-CSCF usage of SDP p. 38

5.9.3.1 Introduction p. 38

5.9.3.2 Receipt of an SDP offer p. 38

5.9.3.3 Receipt of an SDP answer p. 38

5.9.3.4 Change of media connection data p. 38

5.10 Additional procedures in support of NA(P)T and NA(P)T-PT controlled by the P-CSCF p. 38

5.10.1 Scope p. 38

5.10.2 P-CSCF usage of SDP p. 39

5.10.2.1 Introduction p. 39

5.10.2.2 Receipt of an SDP offer p. 39

5.10.2.3 Receipt of an SDP answer p. 39

5.10.2.4 Change of media connection data p. 39

5.11 Conference establishment p. 39

TR 24.819
Protocol impact from providing IMS services via Fixed Broadband