Content for TR 23.798 Word version: 15.0.0
5 Key issues p. 6
5.1 Key issue 1: Optimizing the use of the limited backhaul for local communications p. 6
5.2 Key issue 2: Transition of an IOPS network between full isolation and limited backhaul p. 6
5.x Key issue x: Title p. 7
6 Solutions p. 7
6.1 Solution 1: IOPS network using the backhaul for authentication only p. 7
6.1.1 Description p. 7
6.1.1.1 Introduction and high-level architecture p. 7
6.1.1.2 MME functional split p. 8
6.1.1.3 Information flows p. 8
6.1.2 Impacts on existing nodes and functionality p. 10
6.1.3 Solution evaluation p. 10
6.2 Solution 2: IOPS network using the backhaul only for authentication of unknown UEs p. 10
6.2.1 Introduction and high-level architecture p. 10
6.2.2 Information flows p. 11
6.2.2.1 Initial Attach procedure, UE known in the IOPS network p. 11
6.2.2.2 Initial Attach procedure, UE not known in the IOPS network p. 11
6.2.2a Impacts on existing nodes and functionality p. 13
6.2.3 Solution evaluation p. 13
6.3 Solution 3: Limited backhaul for authentication only p. 13
6.3.1 Description p. 13
6.3.2 Impacts on existing nodes and functionality p. 16
6.3.3 Solution evaluation p. 16
6.x Solution x: Title p. 16
7 Overall evaluation p. 17
8 Conclusions p. 18
$ Change History p. 19
