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

Claim 10:
11. A base station in a wireless communication system, the base station comprising:
a transceiver; and
a controller coupled with the transceiver, and configured to:
transmit a system information block 1 (SIB1) including information on a time alignment timer common value,
receive, 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,
transmit, 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
receive, 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.