Page 535 - 5G Basics - Core Network Aspects

Core network aspects 1

Figure 8-2 – Procedure for application with one-to-multiple devices

The interaction shown in Figure 8-2 is as follows:

1) UE#1 requests service (or content) to SCF and SCF updates activation status.
2) On receiving the service request, SCF sends an update message to C-MMCF to inform that UE#1 has
been activated by the user.

3) On receiving service request, the content source sends content with the source field set to the
address of content source, and the destination set to the user's address (U_addr).

4) On receiving packet from content source, transport function relays content with the change of
destination information. The destination is changed from user's address (U_addr) to activated
device address (UE#1_addr).
5) User changes device from UE#1 to UE#2 and UE#1 requests service (or content) to SCF and SCF
updates activation status. Now active device of user is UE#2.
6) On receiving service request, SCF sends update message to C-MMCF to inform that UE #2 has just
been just activated by the user.
7) C-MMCF updates UE#2's location information and send information to transport function.
8) On receiving packet, transport function relays packet with the change of destination information
sent to the address of activated device of user (UE#2_addr).

8.3 Procedure for applications with multiple devices-to-one
Figure 8-3 describes mobility management procedure in multiple devices-to-one application with multiple
devices on the sender's side and single receiver.

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