Apparatus and method for uplink data report and control channel synchronization in wireless communication system

A method performed by a user equipment (UE) in a wireless communication system, the method comprising:

• receiving, from a base station, a system information block 1 (SIB1) including information on a time alignment timer common value;
• transmitting, to the base station, 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;
• receiving, from the base station, a random access response including a timing advance command, as a response to the random access preamble;
• applying the timing advance command based on the reception of the timing advance command included in the random access response;
• starting a time alignment timer based on by applying the time alignment timer common value included in the SIB1, based on the reception of the timing advance command included in the random access response;
• and
• transmitting, to the base station, an uplink-common control channel (UL-CCCH) message of the random access procedure based on the reception of the random access response, wherein the UL-CCCH message includes an RRC resume request message.

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.

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.