Page 272 - 5G Basics - Core Network Aspects

1 Core network aspects

MUE AC-FE (1) AC-FE (2) MR-FE MC-FE MC-FE MMF

0. MUE is connected
simultaneously to multiple
access networks
1. Connection update request
2. Connection
information
3. Transport resource
modification request
4. Transport resource
modification response
5. Policy installation
6. QoS rules
7. ACK
Y.2027(12)_FIV.4

Figure IV.4 – Network initialled IP flow mobility
0) The MUE is connected to multiple access networks simultaneously and uses multiple connections
to send and receive IP flows;
1) AC-FE (1) sends a Connection Update Request message to MR-FE. The message contains the
identifier and new information of the connection that the network wants to modify;
2) MR-FE updates the information of the connection based on the Connection Update Request
message. Then MR-FE sends a Connection Information message to MC-FE;
3) MC-FE sends a Transport Resource Modification Request message which contains the updated
information of the connections to MPC-FE;
4) MPC-FE selects new QoS policy rules for the connection based on the operator policy and the
updated connection information. Then it returns a Transport Resource Modification Response
message to MC-FE.
5) MC-FE makes and assigns related rules for access network to MMF, MMF installs the rules.
6) MMF sends the new QoS rules to AC-FE (2);

7) AC-FE (2) updates the QoS policy rules of the connection. Then it returns an ACK message to MMF.

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