Content for TR 23.700-75 Word version: 19.0.0
5 Key Issues p. 8
5.1 Key Issue 1: MPS Priority support for Messaging over IMS p. 8
5.2 Key Issue 2: Priority support for SMS over IP based on MPS subscription p. 9
5.3 Key Issue 3: Priority support for SMS over NAS based on MPS subscription p. 9
6 Solutions p. 10
6.0 Mapping Solutions to Key Issues p. 10
6.1 Solution #1: SMS over IP (4G and 5G) p. 10
6.1.1 Introduction p. 10
6.1.2 Functional Description p. 11
6.1.3 Procedures p. 12
6.1.3.1 General p. 12
6.1.3.2 Procedures for Short Message handling, MO p. 12
6.1.3.3 Procedures for Short Message handling, MT p. 13
6.1.4 Impacts on services, entities, and interfaces p. 14
6.2 Solution #2: MPS support for SMS over NAS p. 15
6.2.1 Introduction p. 15
6.2.2 Functional Description p. 15
6.2.3 Procedures p. 15
6.2.3.1 Registration procedure for SMS over NAS p. 15
6.2.3.2 MO SMS over NAS procedure p. 16
6.2.3.2a MO SMS over NAS with SBI p. 17
6.2.3.3 MT SMS over NAS procedure p. 18
6.2.3.3a MT SMS over NAS with SBI p. 20
6.2.3.3b MT SMS over NAS with IP-SM-GW p. 21
6.2.3.3c MT SMS over NAS with SMS Router p. 22
6.2.4 Impacts on services, entities, and interfaces p. 23
6.3 Solution #3: IMS Messaging p. 23
6.3.1 Introduction p. 23
6.3.2 Functional Description p. 24
6.3.3 Procedures p. 24
6.3.3.1 General p. 24
6.3.3.2 Procedures for immediate messaging p. 25
6.3.3.3 Procedures for immediate messaging with multiple targets p. 25
6.3.3.4 Procedures for session messaging p. 26
6.3.4 Impacts on services, entities, and interfaces p. 28
6.4 Solution #4: Overall activation and deactivation of MPS for messaging p. 28
6.4.1 Introduction p. 28
6.4.2 Functional Description p. 28
6.4.3 Procedures p. 30
6.4.3.1 General p. 30
6.4.3.2 Activation/Deactivation based on HSS-method - Alternative 1 p. 31
6.4.3.3 Activation/Deactivation based on UDR method - Alternative 2 p. 31
6.4.4 Impacts on services, entities, and interfaces p. 31
7 Evaluation p. 32
7.1 SMS over IP p. 32
7.2 MPS support SMS over NAS p. 32
7.3 IMS Messaging p. 32
7.4 Overall activation and deactivation of MPS for messaging p. 32
8 Conclusions p. 33
$ Change history p. 35
