Content for TS 29.162 Word version: 18.1.0
4 General
5 Network characteristics
6 Interworking Reference Model for control plane interworking and user plane interworking
7 Control plane interworking
8 User Plane Interworking
9 IMS-ALG and TrGW functionality for NAPT and IP Version Interworking
10 IBCF - TrGW Interactions
$ Change History
4 General p. 11
5 Network characteristics p. 12
5.1 Key characteristics of IP Multimedia Networks p. 12
5.2 Key characteristics of UMTS IM CN Subsystem p. 12
6 Interworking Reference Model for control plane interworking and user plane interworking p. 12
6.0 Reference Model |R10| p. 12
6.1 Interworking Functional Entities p. 14
6.1.1 IBCF p. 14
6.1.2 IMS-ALG p. 14
6.1.3 TrGW p. 14
6.1.4 Acces Transfer Control Function |R10| p. 14
6.1.5 Acces Transfer GateWay |R10| p. 14
7 Control plane interworking p. 14
7.1 SIP with 3GPP Profile to Standard SIP Interworking p. 14
7.2 Additional interworking of protocols associated with services |R8| p. 15
8 User Plane Interworking p. 15
9 IMS-ALG and TrGW functionality for NAPT and IP Version Interworking p. 15
9.1 Control plane interworking p. 15
9.1.1 Session Set-up p. 15
9.1.1.0 General |R9| p. 15
9.1.1.1 Receipt of the first SDP offer p. 15
9.1.1.2 Receipt of the first SDP answer p. 16
9.1.2 Void
9.1.3 Change of connection information p. 16
9.1.4 Interworking of SIP messages p. 16
9.1.5 Modification of SDP bandwidth information for IP version interworking |R12| p. 17
9.2 User plane transport p. 17
9.2.1 Payload transport p. 17
9.2.2 IP header interworking p. 18
9.2.2.1 IPv4 to IPv6 p. 18
9.2.2.2 Abnormal cases p. 19
9.2.2.3 IPv6 to IPv4 p. 20
9.2.2.4 Abnormal cases p. 21
9.2.3 Fragmentation p. 21
9.2.4 Abnormal cases p. 22
10 IBCF - TrGW Interactions |R9| p. 22
10.1 Overview p. 22
10.1.1 General p. 22
10.1.2 Network model p. 22
10.1.3 Example Call Flow p. 22
10.1.3.1 Basic Procedures p. 22
10.1.3.1.1 Call Establishment p. 22
10.1.3.1.2 Call Release p. 25
10.2 Main Functions supported at the Ix Interface p. 25
10.2.0 Introduction p. 25
10.2.1 NAPT and IP version interworking p. 26
10.2.2 Gate Management p. 26
10.2.3 RTCP Handling p. 26
10.2.4 IP Realm Indication p. 27
10.2.5 Media Control p. 27
10.2.5.1 General |R12| p. 27
10.2.5.2 Handling of common codec parameters |R12| p. 34
10.2.5.3 EVS speech codec parameters handling |R12| p. 34
10.2.5.4 Rate adaptation for media endpoints |R13| p. 34
10.2.5.5 IVAS speech codec parameters handling |R18| p. 35
10.2.6 Media Inactivity Detection p. 36
10.2.7 QoS Packet Marking (differentiated services) p. 36
10.2.8 Hanging Termination Detection p. 36
10.2.9 Bandwidth Policing p. 36
10.2.10 IMS end-to-end media plane security p. 36
10.2.10.1 End-to-end security for RTP based media |R12| p. 36
10.2.10.2 End-to-end security for TCP based media using TLS |R12| p. 37
10.2.11 Through-Connection p. 37
10.2.11.1 General |R14| p. 37
10.2.11.2 Through-connect control procedures considering the P-Early-Media header field |R14| p. 38
10.2.12 Emergency Call p. 39
10.2.13 Explicit Congestion Notification support p. 39
10.2.13.1 General |R10| p. 39
10.2.13.2 Incoming SDP offer with ECN |R10| p. 39
10.2.13.3 Incoming SDP offer without ECN |R10| p. 41
10.2.13.3a Detection of ECN failures by TrGW |R10| p. 41
10.2.13.4 Interworking with non-3GPP ECN IP terminal |R10| p. 41
10.2.13.4.1 Support for additional ECN parameters p. 41
10.2.13.4.2 Incoming SDP offer from external IP network with ECN p. 41
10.2.13.4.3 Incoming SDP offer from the IMS with ECN p. 41
10.2.13.5 Message sequence chart |R10| p. 43
10.2.14 Optimal Media Routeing |R10| p. 44
10.2.15 IP Realm Availability |R10| p. 44
10.2.16 Access Transfer procedures with media anchored in ATGW |R10| p. 44
10.2.17 Multimedia Priority Service (MPS) Support |R11| p. 45
10.2.17.1 General p. 45
10.2.17.2 TrGW Resource Congestion in ADD response, request is queued p. 45
10.2.17.3 TrGW Resource Congestion in ADD response, IBCF seizes new TrGW p. 46
10.2.17.4 TrGW Priority Resource Allocation p. 46
10.2.17.5 TrGW Priority User Data marking p. 47
10.2.17.6 TrGW Priority Modification p. 47
10.2.18 Coordination of Video Orientation |R12| p. 47
10.2.18.1 General p. 47
10.2.18.2 Message sequence chart p. 48
10.2.19 Generic image attributes |R12| p. 49
10.2.20 Interactive Connectivity Establishment (ICE) |R12| p. 51
10.2.21 MSRP handling |R12| p. 51
10.2.22 Alternative connection (ALTC) addresses management |R12| p. 51
10.2.23 Video Region-of-Interest (ROI) |R13| p. 52
10.2.23.1 General p. 52
10.2.23.2 "Far End Camera Control" mode p. 52
10.2.23.3 "Predefined ROI" mode p. 53
10.2.23.4 "Arbitrary ROI" mode p. 53
10.2.24 SDP Capability Negotiation (SDPCapNeg) |R13| p. 54
10.2.24.1 General p. 54
10.2.24.2 Message sequence chart p. 55
10.2.25 WebRTC Media Plane Optimization |R13| p. 56
10.2.26 RTP-level pause and resume |R14| p. 56
10.2.27 RTCP Codec Control Commands and Indications |R14| p. 56
10.2.28 Delay Budget Information (DBI) |R16| p. 57
10.3 Void
10.4 Procedures p. 57
10.4.1 Call related Procedures p. 57
10.4.1.1 Reserve TrGW Connection Point p. 57
10.4.1.2 Configure TrGW Connection Point p. 61
10.4.1.3 Reserve and Configure TrGW Connection Point p. 65
10.4.1.4 Release TrGW Termination p. 70
10.4.1.5 IP Bearer Released p. 71
10.4.1.6 Media Inactivity Detection p. 71
10.4.1.7 Termination heartbeat indication p. 72
10.4.1.8 Change Through-Connection p. 72
10.4.1.9 ECN Failure Indication |R10| p. 73
10.4.1.10 Change Flow Direction |R10| p. 73
10.4.1.11 ICE Connectivity Check Result Notification |R12| p. 74
10.4.1.12 ICE New Peer Reflexive Candidate Notification |R12| p. 74
10.4.2 Non Call related Procedures p. 74
A Void
$ Change History p. 76
