Content for TR 23.802 Word version: 7.0.0
2 References
3 Definitions and abbreviations
4 General requirements
5 Architectural concept
6 Procedures
7 Message flows
8 Security aspects
9 Charging aspects
10 Conclusions and recommendations
A QoS conceptual models
B Examples of QoS provisioning schemes
$ Change history
2 References p. 7
3 Definitions and abbreviations p. 8
3.1 Definitions p. 8
3.2 Abbreviations p. 9
4 General requirements p. 9
4.1 Enhanced requirements for end-to-end QoS p. 10
4.2 General issues of end-to-end QoS p. 11
4.2.1 Overview p. 11
4.2.2 Signaling of QoS requirements p. 12
4.2.3 Resource check and IMS session setup p. 12
4.2.4 Impact of insufficient or unavailable resources p. 12
4.2.5 Identification of next domain for off-path signalling p. 13
4.2.6 Negotiation and allocation of external resources p. 13
4.2.7 Provision of end-to-end QoS for non-IMS applications p. 13
5 Architectural concept p. 13
5.1 General end-to-end QoS reference model p. 13
5.1.1 Introduction p. 13
5.2 Connection models p. 14
5.2.0 Overview p. 14
5.2.1 UE-UE connection via interconnected proxying networks p. 15
5.2.1.1 General p. 15
5.2.1.2 Control and media via the same intermediate network p. 15
5.2.1.3 Control and media via different intermediate networks p. 16
5.2.2 UE-UE connection via backbone IP networks with off-path QoS signalling p. 16
5.2.3 UE-UE connection via backbone IP networks without QoS signalling p. 17
5.2.4 UE-UE connection via backbone IP networks with on-path QoS signalling p. 18
5.2.5 UE-UE connection via backbone IP networks with hybrid-path QoS signalling p. 19
5.3 Issues of connection models p. 20
5.3.1 Type of information to be exchange end to end p. 20
5.3.2 Information stored in PDF after negotiation p. 21
5.3.3 Usage of QoS signalling p. 21
5.4 Architecture for off-path IP QoS interaction between UMTS network and external IP network p. 21
5.4.1 General p. 21
5.4.2 Description of functions p. 22
5.4.2.1 QoS management functions for off-path end-to-end IP QoS in the UMTS network p. 22
5.4.2.2 QoS management functions for off-path end-to-end IP QoS in the external network p. 22
5.4.2.3 Interaction between UMTS network and external networks p. 22
5.4.3 Enhanced capabilities of functional elements p. 23
5.4.3.1 GGSN p. 23
5.4.3.2 PDF p. 23
5.4.4 Reference points between functional elements p. 23
5.5 Architecture for on-path IP QoS interaction between UMTS network and external IP network p. 24
5.5.1 Overview p. 24
5.5.2 RSVP p. 24
5.5.2.1 General p. 24
5.5.2.2 Description of functions p. 25
5.5.2.2.1 QoS management functions for RSVP based on-path end-to-end IP QoS in the IP-CAN p. 25
5.5.2.2.2 QoS management functions for RSVP based on-path end-to-end IP QoS in the external network p. 25
5.5.2.2.3 Interaction between the IP-CAN and external networks p. 25
5.5.2.3 Enhanced capabilities of functional elements p. 25
5.5.2.3.1 GGSN p. 25
5.5.2.4 Reference points between functional elements p. 26
5.5.3 MPLS-TE p. 26
5.5.4 Feedback based call admission control p. 26
5.5.5 NSIS p. 27
5.6 Architecture for hybrid-path IP QoS interaction between UMTS network and external IP network p. 29
5.6.1 General p. 29
5.6.2 Description of functions p. 29
5.6.2.1 QoS negotiation functions for hybrid-path end-to-end IP QoS p. 29
5.6.2.2 QoS management functions for hybrid-path end-to-end IP QoS p. 29
5.6.2.3 Selection of external network p. 29
5.6.3 Reference point between functional elements p. 29
5.7 Characteristics of different IP QoS architectures p. 30
5.7.1 Overview p. 30
5.7.2 Characteristics of feedback based QoS solution p. 30
5.7.2.1 Characteristics of the feedback based call admission control with continuous monitoring p. 30
5.7.2.2 Characteristics of the feedback based call admission control using RT-ECN probing with continuous ECN monitoring p. 30
5.7.3 Characteristics of off-path signalling using Gu interface p. 31
5.7.4 Characteristics of on-path signalled QoS solution p. 31
6 Procedures p. 31
6.1 QoS procedures in functional elements p. 31
6.1.1 General p. 31
6.1.2 Procedures in the off-path model p. 32
6.1.3 Procedures in the feedback based call admission control on-path model p. 32
6.1.3.1 General p. 32
6.1.3.2 Procedures for feedback based call admission control with continuous monitoring p. 32
6.1.3.2.1 Overview p. 32
6.1.3.2.2 Provision of feedback on resource situation p. 33
6.1.3.2.3 Performing Call Admission Control based on resource situation p. 34
6.1.3.2.4 Monitoring support in inter-mediate domains p. 34
6.1.3.2.5 Providing feedback for rate control in case of persistent congestion p. 35
6.1.3.3 Procedures for feedback based call admission control with RT-ECN probing and continuous ECN monitoring p. 35
6.1.3.3.1 General p. 35
6.1.3.3.2 Procedures in the GGSN p. 35
7 Message flows p. 36
7.1 Message flows for the off-path IP QoS model p. 36
7.1.1 Authorize QoS resources, AF session establishment p. 36
7.1.2 Authorize QoS resources, bearer establishment p. 36
7.1.3 Enable media procedure p. 37
7.1.4 Disable media procedure p. 37
7.1.5 Revoke authorization for GPRS and IP resources p. 38
7.1.6 Indication of PDP context release p. 39
7.1.7 Authorization of PDP context modification p. 40
7.1.8 Indication of PDP context modification p. 41
7.1.9 Update authorization procedure p. 41
7.2 Message flows for the on-path signalling IP QoS model p. 42
7.2.1 Authorize QoS resources, AF session establishment p. 42
7.2.2 Authorize QoS resources, bearer establishment p. 42
7.2.3 Enable media procedure p. 43
7.2.4 Disable media procedure p. 43
7.2.5 Revoke authorization for GPRS and IP resources p. 43
7.2.6 Indication of PDP context release p. 45
7.2.7 Authorization of PDP context modification p. 45
7.2.8 Indication of PDP context modification p. 47
7.2.9 Update authorization procedure p. 47
8 Security aspects p. 48
8.1 Security aspects for the off-path model p. 48
8.2 Security aspects for the RSVP on-path model p. 49
9 Charging aspects p. 49
10 Conclusions and recommendations p. 49
10.1 Conclusions p. 49
10.2 Recommendations p. 49
A QoS conceptual models p. 50
A.1 Scenarios p. 50
B Examples of QoS provisioning schemes p. 52
B.1 Description of QoS provisioning schemes p. 52
B.1.1 General p. 52
B.1.2 Functionality of the application node to backbone interface p. 52
B.1.3 Over-provisioning p. 53
B.1.4 Static provisioning p. 53
B.1.5 End-to-end measurement based admission control p. 54
B.1.6 Bandwidth broker p. 54
B.1.7 Signalled provisioning p. 55
B.1.8 Feedback based provisioning p. 56
$ Change history p. 57
