Apparatus and method for supporting vehicle-to-everything in wireless communication system
The present disclosure relates to a 5th generation (5G) or pre-5G communication system for supporting a higher data transmission rate beyond a 4th generation (4G) communication system such as long term evolution (LTE). The present disclosure provides an apparatus and a method for supporting vehicle-to-everything (V2X) in a wireless communication system. A method for operating a terminal provided by the present disclosure comprises: a step of performing vehicle-to-everything (V2X) communication with another terminal by using a first transmission resource pool set by a first base station connected to the terminal; a step of transmitting, to the first base station, a measurement result for at least one neighboring base station including a second base station; a step of receiving an indication message for handover from the first base station to the second base station; and a step of performing V2X communication with another terminal by using an exceptional resource pool set for the terminal during handover.
1. A method performed by a first user equipment (UE) in a wireless communication, the method comprising:
receiving, from a first base station, a radio resource control (RRC) reconfiguration message, wherein the RRC reconfiguration message includes synchronization information, first configuration information for a new radio (NR) sidelink communication associated with a first exceptional resource pool, and second configuration information for an evolved-universal mobile telecommunications system (UMTS) terrestrial radio access (E-UTRA) sidelink communication associated with a second exceptional resource pool;
starting a 304 timer based on the receiving of the RRC reconfiguration message including the synchronization information;
performing a sidelink communication with a second UE based on the first exceptional resource pool, in case that the 304 timer is running and the first configuration information includes the first exceptional resource pool,
performing a random access to a second base station;
upon a completion of the random access, stopping the 304 timer; and
transmitting an RRC reconfiguration complete message to the second base station.
2. The method of claim 1 , wherein the sidelink communication with the second UE is performed based on:
a normal resource pool in case that the normal resource pool is received, and
a preconfigured resource pool in case that a resource associated with the sidelink communication is not received.
3. The method of claim 1 , wherein the random access to the second base station is performed while the 304 timer is running.
4. The method of claim 1 , wherein the synchronization information is associated with the 304 timer and a handover with performing the random access to the second base station.
5. A first user equipment (UE) in a wireless communication, the first UE comprising:
a transceiver; and
a controller coupled with the transceiver, and configured to:
receive, from a first base station, a radio resource control (RRC) reconfiguration message, wherein the RRC reconfiguration message includes synchronization information, first configuration information for a new radio (NR) sidelink communication associated with a first exceptional resource pool, and second configuration information for an evolved-universal mobile telecommunications system (UMTS) terrestrial radio access (E-UTRA) sidelink communication associated with a second exceptional resource pool,
start a 304 timer based on the receiving of the RRC reconfiguration message including the synchronization information,
perform a sidelink communication with a second UE based on the first exceptional resource pool, in case that the 304 timer is running and the first configuration information includes the first exceptional resource pool,
perform a random access to a second base station while the 304 timer is running,
upon a completion of the random access, stop the 304 timer, and
transmit an RRC reconfiguration complete message to the second base station.
6. The first UE of claim 5 , wherein the sidelink communication with the second UE is performed based on:
a normal resource pool in case that the normal resource pool is received, and
a preconfigured resource pool in case that a resource associated with the sidelink communication is not received.
7. The first UE of claim 5 , wherein the random access to the second base station is performed while the 304 timer is running.
8. The first UE of claim 5 , wherein the synchronization information is associated with the 304 timer and a handover with performing the random access to the second base station.