Content for TR 23.778 Word version: 16.0.0
4 Key issues
5 Architectural requirements
6 Solutions
7 Overall evaluation
8 Conclusions
$ Change History
4 Key issues p. 7
4.1 IOPS related key issues p. 7
4.1.1 Key issue 2-1 MC system configuration data synchronization p. 7
4.1.1.1 Description p. 7
4.1.2 Key issue 2-2 MC service client configuration for IOPS p. 8
4.1.2.1 Description p. 8
4.1.3 Key issue 2-3 on how to handle an MC UE switching to/from an IOPS MC system p. 8
4.1.3.1 Description p. 8
4.1.4 Key issue 2-4 IOPS architecture p. 8
4.1.4.1 Description p. 8
4.1.5 Key issue 2-5 on ongoing communication continuity when backhaul is recovered p. 9
4.1.5.1 Description p. 9
4.1.6 Key issue 2-6 on support MBMS in IOPS p. 9
4.1.6.1 Description p. 9
4.1.7 Key issue 2-7 on determining a list of MC users connected to the IOPS MC system p. 10
4.1.7.1 Description p. 10
5 Architectural requirements p. 10
6 Solutions p. 11
6.1 Solution 1: UE and user data synchronization p. 11
6.1.1 Description p. 11
6.1.2 Impacts on existing nodes and functionality p. 13
6.1.3 Solution evaluation p. 13
6.2 Solution 2: Functional model for IOPS based on a switchable standalone MC system p. 13
6.2.1 Description p. 13
6.2.2 Solution evaluation p. 14
6.3 Solution 3: Functional model for IOPS based on an always-on partner MC system p. 14
6.3.1 Description p. 14
6.3.2 Solution evaluation p. 15
6.4 Solution 4: Functional model for IOPS MC system based on only IP connectivity p. 15
6.4.1 Description p. 15
6.4.1.1 General p. 15
6.4.1.2 IOPS-based discovery procedure p. 17
6.4.1.3 IOPS-based IP connectivity communication p. 19
6.4.2 Impacts on existing nodes and functionality p. 23
6.4.3 Solution evaluation p. 23
6.5 Solution 5: Functional model for IOPS based on an always-on participating server p. 23
6.5.1 Description p. 23
6.5.2 Solution evaluation p. 25
6.6 Solution 6: Procedure for switching from the primary MC system to an IOPS MC system p. 25
6.7 Solution 7: IOPS notification to MC UEs p. 27
6.7.1 Description p. 27
6.7.2 Impacts on existing nodes and functionality p. 28
6.7.3 Solution evaluation p. 28
6.8 Solution 8: MC service client configuration for IOPS p. 29
6.8.1 Description p. 29
6.8.2 Solution evaluation p. 29
6.9 Solution 9: Functionality for determining the MC user registration status in IOPS p. 29
6.9.1 Description p. 29
6.9.2 Solution evaluation p. 32
7 Overall evaluation p. 33
8 Conclusions p. 35
$ Change History p. 36
