Method and user equipment for multi-carrier data transmission
A method and an apparatus in a wireless communication system are provided. Configuration information is received on resource pools in multiple carriers for a vehicle to everything (V2X) sidelink communication. At least one carrier is selected for transmission among the multiple carriers. An order of the at least one carrier is determined according to a decreasing order based on a highest priority of a sidelink traffic channel. A set of candidate resources associated with each of the at least one carrier is determined according to the determined order. A candidate resource is excluded from the set of candidate resources, in case that the candidate resource is not supported due to a limitation of a user equipment (UE) in supported carrier combinations.
1. A method performed by a user equipment (UE) in a wireless communication system, the method comprising:
receiving configuration information on resource pools in multiple carriers for a vehicle to everything (V2X) sidelink communication;
selecting at least one carrier for transmission among the multiple carriers;
determining an order of the at least one carrier according to a decreasing order based on a highest priority of a sidelink traffic channel;
determining a set of candidate resources associated with each of the at least one carrier, according to the determined order; and
excluding a candidate resource from the set of candidate resources, in case that the candidate resource is not supported due to a limitation of the UE in supported carrier combinations.
2. The method of claim 1 , wherein selecting the at least one carrier further comprises:
determining a carrier of which a channel busy ratio (CBR) is below a configured threshold as one of at least one candidate carrier.
3. The method of claim 2 , wherein selecting the at least one carrier further comprises:
selecting, from among the at least one candidate carrier, the at least one carrier based on an order of the CBR from a smallest CBR.
4. The method of claim 1 , further comprising:
transmitting sidelink data for the V2X sidelink communication based on the set of candidate resources excluding the candidate resource.
5. A user equipment (UE) in a wireless communication system, the UE comprising:
a transceiver; and
a controller configured to:
receive, via the transceiver, configuration information on resource pools in multiple carriers for a vehicle to everything (V2X) sidelink communication,
select at least one carrier for transmission among the multiple carriers,
determine an order of the at least one carrier according to a decreasing order based on a highest priority of a sidelink traffic channel,
determine a set of candidate resources associated with each of the at least one carrier, according to the determined order, and
exclude a candidate resource from the set of candidate resources, in case that the candidate resource is not supported due to a limitation of the UE in supported carrier combinations.
6. The UE of claim 5 , wherein, to select the at least one carrier, the controller is further configured to:
determine a carrier of which a channel busy ratio (CBR) is below a configured threshold as one of at least one candidate carrier.
7. The UE of claim 6 , wherein, to select the at least one carrier, the controller is further configured to:
select, from among the at least one candidate carrier, the at least one carrier based on an order of the CBR from a smallest CBR.
8. The UE of claim 5 , wherein the controller is further configured to:
transmit, via the transceiver, sidelink data for the V2X sidelink communication based on the set of candidate resources excluding the candidate resource.