Content for TR 23.700-93 Word version: 17.0.0
5 Key Issues
6 Solutions
6.0 Mapping Solutions to Key Issues
6.1 Solution #1: QUIC-LL Steering Functionality
6.2 Solution #2: New steering mode - Autonomous steering mode
6.3 Solution #3: New steering mode - Autonomous steering mode with advanced PMF
6.4 Solution #4: New steering mode - Redundant steering mode
6.5 Solution #5: Replacing 3GPP access leg of MA-PDU Session with PDN connection in EPC
6.6 Solution #6: MPQUIC-LL Steering Functionality
6.7 Solution #7: Proposed solution based on MP-QUIC
6.8 Solution #8: Proposed solution based on QUIC
6.9 Solution #9: Supporting a PDN connection in EPC as a 3GPP access leg of MA-PDU Session
6.10 Solution #10: Extension of 5G RG solution to support Ethernet PDU Session types
6.11 Solution #11: Steering mode enhancements for handling - RTT differences
6.12 Solution #12: New steering mode operation - UE assisted operation
6.13 Solution #13: Proxy based solution using QUIC
6.14 Solution #14: Proxy based solution using MP-QUIC
6.15 Solution #15: Enhancements to Load Balancing steering mode operation
5 Key Issues p. 10
5.1 Key issue #1: Additional Steering Modes p. 11
5.1.1 Description p. 11
5.2 Key issue #2: Additional Steering Functionalities p. 11
5.2.1 Description p. 11
5.3 Key Issue #3: Supporting MA PDU with 3GPP access leg over EPC and Non-3GPP access leg over 5GC p. 12
5.3.1 Description p. 12
6 Solutions p. 12
6.0 Mapping Solutions to Key Issues p. 12
6.1 Solution #1: QUIC-LL Steering Functionality p. 13
6.1.1 Introduction p. 13
6.1.2 MA PDU Session Establishment procedure p. 16
6.1.3 MA PDU Session Modification procedure p. 18
6.1.4 Example of QUIC-LL Operation p. 18
6.1.4a Alternative User-Plane Operation p. 21
6.1.5 Support of Steering Modes p. 22
6.1.6 Impacts on services, entities, interfaces and IETF protocols p. 23
6.2 Solution #2: New steering mode - Autonomous steering mode p. 24
6.2.1 Introduction p. 24
6.2.2 High-level Description p. 25
6.2.3 Procedures p. 25
6.2.4 Impacts on services, entities, interfaces and IETF Protocols p. 26
6.3 Solution #3: New steering mode - Autonomous steering mode with advanced PMF p. 26
6.3.1 Introduction p. 26
6.3.2 High-level Description p. 27
6.3.2.1 Enhancement on link performance measurement p. 27
6.3.2.2 Thresholds for traffic steering/switching/splitting p. 29
6.3.2.3 Considerations to support per QoS flow measurement p. 30
6.3.4 Impacts on services, entities, interfaces and IETF Protocols p. 31
6.4 Solution #4: New steering mode - Redundant steering mode p. 31
6.4.1 Introduction p. 31
6.4.2 High-level Description p. 31
6.4.3 Impacts on services, entities, interfaces and IETF Protocols p. 31
6.5 Solution #5: Replacing 3GPP access leg of MA-PDU Session with PDN connection in EPC p. 32
6.5.1 Introduction p. 32
6.5.2 High-level Description p. 32
6.5.3 Procedures p. 33
6.5.4 Impacts on services, entities, interfaces and IETF Protocols p. 34
6.6 Solution #6: MPQUIC-LL Steering Functionality p. 34
6.6.1 Introduction p. 34
6.6.2 MA PDU Session Establishment procedure p. 37
6.6.3 MA PDU Session Modification procedure p. 39
6.6.4 Example of MPQUIC-LL Operation p. 39
6.6.5 Support of Steering Modes p. 42
6.6.6 Impacts on services, entities, interfaces and IETF protocols p. 42
6.7 Solution #7: Proposed solution based on MP-QUIC p. 44
6.7.1 Introduction p. 44
6.7.2 High-level Description p. 44
6.7.2.1 Transparent MP-QUIC proxy solution p. 46
6.7.2.2a Non-Transparent QUIC proxy solution p. 46
6.7.2.2b MP-QUIC connection per PDU Session p. 47
6.7.3 Procedures p. 48
6.7.4 Impacts on services, entities, interfaces and IETF protocols p. 49
6.8 Solution #8: Proposed solution based on QUIC p. 50
6.8.1 Introduction p. 50
6.8.2 High-level Description p. 50
6.8.3 Procedure p. 56
6.8.4 Impacts on services, entities, interfaces and IETF protocols p. 57
6.9 Solution #9: Supporting a PDN connection in EPC as a 3GPP access leg of MA-PDU Session p. 58
6.9.1 Introduction p. 58
6.9.2 High-level Description p. 58
6.9.3 Procedures p. 59
6.9.4 Impacts on services, entities, interfaces and IETF Protocols p. 59
6.10 Solution #10: Extension of 5G RG solution to support Ethernet PDU Session types p. 59
6.10.1 Introduction p. 59
6.10.2 High-level Description p. 59
6.10.3 Procedures p. 60
6.10.4 Impacts on services, entities, interfaces and IETF protocols p. 61
6.11 Solution #11: Steering mode enhancements for handling - RTT differences p. 61
6.11.1 Introduction p. 61
6.11.2 High-level Description p. 61
6.11.3 Procedures p. 62
6.11.4 Impacts on services, entities, interfaces and IETF Protocols p. 63
6.12 Solution #12: New steering mode operation - UE assisted operation p. 63
6.12.1 Introduction p. 63
6.12.2 High-level Description p. 63
6.12.3 Procedures p. 64
6.12.4 Impacts on services, entities, interfaces and IETF Protocols p. 65
6.13 Solution #13: Proxy based solution using QUIC p. 65
6.13.1 Introduction p. 65
6.13.2 High-level Description p. 66
6.13.2a Alternate user plane handling in the UE p. 72
6.13.3 Procedures p. 73
6.13.4 Impacts on services, entities, interfaces and IETF protocols p. 75
6.14 Solution #14: Proxy based solution using MP-QUIC p. 76
6.14.1 Introduction p. 76
6.14.2 High-level Description p. 76
6.14.3 Procedures p. 84
6.14.4 Impacts on services, entities, interfaces and IETF protocols p. 85
6.15 Solution #15: Enhancements to Load Balancing steering mode operation p. 86
