Content for TR 23.700-76 Word version: 18.0.0
4 Key issues
5 Architectural requirements
6 Architectural enhancements
7 Solutions
8 Overall evaluation
9 Conclusions
$ Change history
4 Key issues p. 7
4.1 Key issue 1 - Ad hoc group communication p. 7
4.2 Key issue 2 - Network topology hiding from MC service client while establishing Ad hoc group communication p. 7
4.3 Key issue 3 - Configuration parameters for Ad hoc group communication p. 8
4.4 Key issue 4 - Modifying participants list of on-going ad hoc group communication p. 8
4.5 Key issue 5 - Ad hoc group emergency alert p. 8
5 Architectural requirements p. 8
6 Architectural enhancements p. 9
7 Solutions p. 9
7.1 Solution 1: Ad hoc group communication set up for MCX service p. 9
7.1.1 General p. 9
7.1.2 Information flows p. 9
7.1.2.1 Ad hoc group communication request (MC service client - MC service server) p. 9
7.1.2.2 Ad hoc group communication request return (MC service server - MC service client) p. 12
7.1.2.3 AHGC share security material command (MC service client - MC service server) p. 12
7.1.2.4 Ad hoc group communication request (MC service server - MC service client) p. 13
7.1.2.5 Ad hoc group communication response (MC service server - MC service client) p. 14
7.1.2.6 Ad hoc group communication response (MC service client - MC service server) p. 14
7.1.2.7 Ad hoc group communication release request (MC service server - MC service client) p. 14
7.1.2.8 Ad hoc group communication release response (MC service client - MC service server) p. 15
7.1.2.9 Ad hoc group communication get userlist (MC service server - MC service server) p. 15
7.1.2.10 Ad hoc group communication get userlist response (MC service server - MC service server) p. 15
7.1.2.11 Group Call Notify (MC service server - MC service client) p. 15
7.1.3 Procedure p. 16
7.1.3.1 Ad hoc group communication within one MC system p. 16
7.1.3.1.1 Ad hoc group communication setup p. 16
7.1.3.1.2 Release ad hoc group communication p. 19
7.1.3.1.3 MC service server determining the participants list for the Ad hoc group communication setup p. 20
7.1.3.2 Ad hoc group communication involving multiple MC system p. 23
7.1.4 Solution Evaluation p. 26
7.2 Solution 2: Ad hoc group call involving multiple MC systems p. 26
7.2.1 General p. 26
7.2.2 Solution description p. 26
7.2.2.1 Procedures p. 26
7.2.2.1.1 Procedure for ad hoc group call setup p. 26
7.2.2.1.2 Procedure for ad hoc group call release p. 28
7.2.2.2 Information Flows p. 30
7.2.2.2.1 Group call request (MC service client - MC service server) p. 30
7.2.2.2.2 Group call request (MC service server - MC service server) p. 30
7.2.2.2.3 Group call request (MC service server - MC service client) p. 31
7.2.2.2.4 Group call response (MC service server - MC service client) p. 32
7.2.2.2.5 Group call response (MC service server - MC service server) p. 32
7.2.2.2.6 Group call response (MC service client - MC service server) p. 32
7.2.3 Solution Evaluation p. 33
7.3 Solution 3: Configuration parameters required for Ad hoc group communication p. 33
7.3.1 General p. 33
7.3.2 MC service configuration data p. 33
7.3.3 MC service user profile configuration data p. 33
7.3.4 Solution Evaluation p. 34
7.4 Solution 4: Modifying participants list of on-going ad hoc group communication p. 34
7.4.1 General p. 34
7.4.2 Information flows p. 34
7.4.2.1 Modify ad hoc Group call participants request (MC service client - MC service server) p. 34
7.4.2.2 Modify ad hoc group call participants response (MC service server - MC service client) p. 35
7.4.2.3 Ad hoc group call leave request (MC service server - MC service client) p. 35
7.4.2.4 Ad hoc group call leave response (MC service client - MC service server) p. 35
7.4.3 Procedure p. 36
7.4.3.1 Modification of ad hoc group communication participants by the initiator p. 36
7.4.3.2 Modification of ad hoc group communication participants by the MC service server p. 38
7.4.4 Solution evaluation p. 40
8 Overall evaluation p. 40
9 Conclusions p. 43
$ Change history p. 44
