Content for TR 23.702 Word version: 14.0.0
5 Key issues p. 9
5.1 Key Issue 1 - UE informing the network about the UE's status p. 9
5.2 Key Issue 2 - making the UE aware of 3GPP PS Data Off Exempt Services p. 10
5.2.1 Description p. 10
5.2.2 Architectural Requirements p. 10
5.3 Key Issue 3 - support for controlling non-SIP based services which are not 3GPP PS Data Off Exempt Services in roaming (LBO and roaming with no IMS roaming interfaces) and non-roaming cases p. 10
5.3.1 Description p. 10
5.3.2 Architectural Requirements p. 10
5.4 Key Issue 4 - support for per service control of SIP messages (and associated media traffic) for SIP based services which are not 3GPP PS Data Off Exempt Services in roaming (LBO and roaming with no IMS roaming interfaces) and non-roaming cases p. 10
5.4.1 Description p. 10
5.4.2 Architectural Requirements p. 11
6 Solutions p. 11
6.1 Solutions for Key Issue 1 p. 11
6.1.1 Solution 1.1: UE informing the network (EPC and IMS) about the UE's status via NAS and SIP Register p. 11
6.1.1.1 Description p. 11
6.1.1.2 Impacts on existing nodes and functionality p. 11
6.1.1.3 Solution Evaluation p. 12
6.1.2 Solution 1.2: UE reports its 3GPP PS Data Off status to 3GPP Core Network p. 12
6.1.2.1 Solution Description p. 12
6.1.2.1.1 General p. 12
6.1.2.1.2 Reporting initial status during attach procedure p. 14
6.1.2.1.3 Reporting status change in TAU procedure p. 15
6.1.2.2 Impacts on existing nodes and functionality p. 16
6.1.2.3 Evaluation p. 16
6.1.3 Solution 1.3: UE informing the network about the UE's status via single NAS message p. 17
6.1.3.1 Description of the solution p. 17
6.1.3.1.1 General p. 17
6.1.3.1.2 Procedures p. 17
6.1.3.2 Impacts on existing nodes and functionality p. 20
6.1.3.3 Solution Evaluation p. 20
6.1.4 Solution 1.4: Key issue 1 UE reports its 3GPP PS Data Off status to HSS using USSD and USSI p. 20
6.1.4.1 Description p. 20
6.1.4.2 Impacts on existing nodes and functionality p. 22
6.1.4.3 Solution Evaluation p. 22
6.1.5 Solution 1.5: UE informing EPC, IMS about the UE's Data Off Capability via NAS message and IMS Register with HSS holding provisioning information p. 22
6.1.5.1 Description of the solution p. 22
6.1.5.2 Impacts on existing nodes and functionality p. 23
6.1.5.3 Solution Evaluation p. 24
6.1.6 Solution 1.6: UE reports its 3GPP PS Data Off status to 3GPP Core Network in PCO p. 24
6.1.7 Solution 1.7 for Key issue 1: UE reports its 3GPP PS Data Off status to HSS using USSD and USSI using Auto Device Detection (ADD) p. 25
6.2 Solutions for Key Issue 2 making the UE aware of 3GPP PS Data Off Exempt Services p. 27
6.2.1 Solution 2.1: Making the UE aware of 3GPP PS Data Off Exempt Services using filters for non-SIP services and enumeration/ICSI for SIP services p. 27
6.2.1.1 Description p. 27
6.2.1.2 Impacts on existing nodes and functionality p. 27
6.2.1.3 Solution Evaluation p. 27
6.2.2 Solution 2.2 for Key Issue 2 - making the UE aware of 3GPP PS Data Off Exempt Services p. 27
6.2.2.1 Description p. 27
6.2.2.2 Impacts on existing nodes and functionality p. 27
6.2.2.3 Solution Evaluation p. 28
6.2.3 Solution 2.3: Making the UE aware of 3GPP PS Data Off Exempt Services using a list of Data Off Exempted Services (DOES) p. 28
6.2.3.1 General p. 28
6.2.3.2 Description p. 28
6.2.3.2.1 Deployments in which VPLMNs are not upgraded p. 28
6.2.3.2.2 Deployments satisfying all PS Data Off SA1 requirements p. 28
6.2.3.3 Impacts on existing nodes and functionality p. 31
6.2.3.4 Solution Evaluation p. 31
6.2.4 Solution 2.4 for Key Issue 2 - making the UE aware of 3GPP PS Data Off Exempt Services p. 31
6.2.4.1 Description p. 31
6.2.4.2 Impacts on existing nodes and functionality p. 32
6.2.4.3 Solution Evaluation p. 32
6.2.5 Solution 2.5: Making the UE aware of 3GPP PS Data exempt services with HSS holding provisioning information p. 32
6.2.5.1 Description of the solution p. 32
6.2.5.2 Impacts on existing nodes and functionality p. 33
6.2.5.3 Solution Evaluation p. 33
6.2.6 Solution 2.6: Making the UE aware of 3GPP PS Data Off Exempt Services using a list of Data Off Exempted Services (DOES) via USSD / USSI p. 33
6.2.6.1 General p. 33
6.2.6.2 Description p. 33
6.3 Solutions for Key Issue 3 p. 35
6.3.1 Solution 3.1: Support for controlling non-SIP based services which are not 3GPP PS Data Off Exempt Services in roaming (LBO and roaming with no IMS roaming interfaces) and non-roaming cases p. 35
6.3.1.1 Description p. 35
6.3.1.2 Impacts on existing nodes and functionality p. 37
6.3.1.3 Solution Evaluation p. 37
6.3.2 Solution 3.2: Non-SIP based Service Controlling in 3GPP core network p. 37
6.3.3 Solution 3.3: Enforcement of 3GPP PS Data Off policy in the Core Network using PCC for non-SIP service p. 39
6.3.3.1 Description p. 39
6.3.3.2 Impacts on existing nodes and functionality p. 43
6.3.3.3 Solution evaluation p. 43
6.3.4 Solution 3.4: Support for controlling non-SIP based PS Data Off Exempt Services in UE and EPC based on HSS as single database p. 43
6.3.4.1 Description p. 43
6.3.4.1.1 General p. 43
6.3.4.2.1 Additional call flows p. 44
6.3.4.2 Impacts on existing nodes and functionality p. 47
6.3.4.3 Solution Evaluation p. 47
6.3.5 Solution 3.5: Charging system based solution for non-SIP based service p. 47
6.3.5.1 Solution Description p. 47
6.3.5.2 Impacts on existing nodes and functionality p. 47
6.3.5.3 Solution evaluation p. 47
6.3.6 Solution 3.6: Solution using HSS knowledge of PS Data Off UE status avoiding VPLMN impacts in early deployments p. 47
6.3.6.1 Description p. 47
6.3.6.1.1 General p. 47
6.3.6.2 Impacts on existing nodes and functionality p. 48
6.3.6.3 Solution Evaluation p. 49
6.3.7 Solution 3.7: Solution using PCO for carrying PS Data Off UE status avoiding VPLMN impacts for early deployments p. 49
6.4 Solutions for Key Issue 4 p. 51
6.4.1 Solution 4.1: Support for per service control of SIP messages for SIP based services which are not 3GPP PS Data Off Exempt Services in roaming (LBO and roaming with no IMS roaming interfaces) and non-roaming cases p. 51
6.4.1.1 Description p. 51
6.4.1.1.1 3GPP PS Data Off Feature Activated - Enforcement on UE-originating SIP requests p. 51
6.4.1.1.2 3GPP PS Data Off Feature Activated - Network Enforcement p. 52
6.4.1.1.3 3GPP PS Data Off Feature De-activated p. 52
6.4.1.1.4 CSCF Configuration with IMS Data Off exempt Services p. 52
6.4.1.1.5 Handling of ongoing sessions during 3GPP PS Data Off Feature Activation p. 52
6.4.1.2 Impacts on existing nodes and functionality p. 52
6.4.1.3 Solution Evaluation p. 52
6.4.2 Solution 4.2 for Key Issue 4 - Support for per service control of SIP messages for SIP based services which are not 3GPP PS Data Off Exempt Services in roaming (LBO and roaming with no IMS roaming interfaces) and non-roaming cases using Application Server p. 53
6.4.2.1 Description p. 53
6.4.2.1.1 3GPP PS Data Off Feature Activated - Enforcement on UE-originating SIP requests p. 53
6.4.2.1.2 3GPP PS Data Off Feature Activated - Network Enforcement p. 53
6.4.2.1.3 3GPP PS Data Off Feature De-activated p. 53
6.4.2.1.4 Application Server configuration with IMS Data Off exempt Services p. 53
6.4.2.2 Impacts on existing nodes and functionality p. 53
6.4.2.3 Solution Evaluation p. 54
6.4.3 Solution 4.3: Control of SIP based PS Data Off Exempted services using the HSS p. 54
6.4.3.1 Description p. 54
6.4.3.1.1 PS Data Off network configuration p. 54
6.4.3.1.2 PS Data Off UE configuration and enforcement p. 54
6.4.3.1.4 PS Data Off network enforcement in case of multiple IMS registration p. 54
6.4.3.2 Impacts on existing nodes and functionality p. 54
6.4.3.3 Solution Evaluation p. 54
6.4.4 Solution 4.4: HSS based solution to inform IMS the 3GPP Data Off status p. 55
6.4.4.1 Description p. 55
6.4.4.2 Impacts on existing nodes and functionality p. 55
6.4.4.3 Solution Evaluation p. 55
6.4.5 Solution 4.5: Network part Solution for Key Issue 4 - T-ADS based solution in MT p. 55
6.4.5.1 Description p. 55
6.4.5.1.1 3GPP PS Data Off Feature Activated Procedure p. 56
6.4.5.1.2 3GPP PS Data Off Feature De-Activated Procedure p. 56
6.4.5.2 Impacts on existing nodes and functionality p. 56
6.4.5.3 Solution Evaluation p. 57
6.4.6 Solution 4.6: Key Issue 4 - Network Enforcement of 3GPP PS Data Off IMS Voice and Video Sessions p. 57
7 Overall evaluation p. 59
8 Conclusions p. 60
$ Change History p. 62
