Patent ID: 11950133
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 12:
13. A user equipment (UE) in a wireless communication system, the UE comprising:
a transceiver; and
at least one processor operably connected to the transceiver, the at least one processor configured to:
identify an inter-system change from a first mode to a second mode;
transmit, to a network entity, a request message including first information related to whether a header compression for control plane CIoT 5GS optimization is supported by the UE, wherein the first information is indicated by a value included in a capability information element (IE) of the request message;
receive, from the network entity, an accept message including second information related to whether the header compression is supported by the network entity; and
based on the first information indicating that the header compression is supported at the UE, the second information indicating that the header compression is supported at the network entity, the UE operating in a single-registration mode in the network entity supporting an N26 interface, initiate a modification procedure for negotiating header compression configuration,

wherein in case that the first mode is a S1 mode and the second mode is a N1 mode, the request message is a message for requesting registration, and
wherein the header compression configuration is negotiated based on the modification procedure.