Patent ID: 11889347
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 13:
14. A method performed by a base station in a wireless communication system, the method comprising:
transmitting a system information block 1 (SIB1) including information on a time alignment timer common value;
receiving, from a user equipment (UE), a random access preamble of a random access procedure for a transition from a radio resource control (RRC) inactive state to an RRC connected state;
transmitting, to the UE, a random access response including a timing advance command, as a response to the random access preamble, wherein a time alignment timer is started based on the time alignment timer common value included in the SIB1 according to the timing advance command included in the random access response; and
receiving, from the UE, an uplink-common control channel (UL-CCCH) message of the random access procedure based on the transmission of the random access response, wherein UL-CCCH message includes an RRC resume request message.