Patent ID: 11963010
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: nan (nan)
Classification: CPC nan | IPC H

Claim 3:
4. A method performed by an access and mobility management function (AMF) in a wireless communication, the method comprising:
receiving, from a user equipment (UE), a first message for a request;
transmitting, to the UE, a security mode command message including indication information for requesting a retransmission of the request, wherein the indication information includes a bit for indicating whether the retransmission is requested or not;
receiving, from the UE, a second message for the request using a security mode complete message in response to the security mode command message, in case that the bit being set to a value indicating that the retransmission is requested; and
transmitting, to the UE, a response message for the request,
wherein the request includes a registration request or a service request,
wherein the value of the bit indicates that the retransmission is requested in case that the AMF is unable to decrypt a ciphered message for the request, and
wherein the security mode complete message is ciphered and integrity protected.