Page 412 - 5G Basics - Core Network Aspects

1 Core network aspects

18)-21) MUE2 responds with a SIP OK message to MUE1.

9.3.2 Enhanced file transfer unrelated to the call
In the multi-connection environment, multiple media flows of file transfers can be transmitted by different
interfaces of the multi-connection UE. And the receiver can utilize only one service component to receive the
data. During the procedure, all of the various transmissions can be combined and controlled together. As a
result, it would be much easier to get an uplink aggregate bandwidth. The information flow is shown as
Figure 9-6.

Figure 9-6 – Enhanced file transfer unrelated to the call
0) MUE1 connects to multiple access networks, and simultaneously initiates file transfer to MUE2.
1)-4) MUE1_ IF(1) and MUE1_ IF(2) initiate file transfer service components (SC1 and SC2 SIP invite
requests). These sip invite requests are sent to corresponding SCFs through different networks, and
are respectively forwarded to MAS-F.
5) MAS-F identifies that these requests belong to the same application and can be composed. It
composes the information of SC1 and SC2, and generates a new service component (SC-3) for MUE2.

6) The SC3 SIP invite initial request is routed to SCF2.
7) The SC3 SIP invite initial request is forwarded to MUE2.
8)-9) MUE2 constructs a SIP invite response for SC3, and returns it along the transmission path. The
response is then forwarded to MAS-F.

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