Method and apparatus for selecting carrier in communication system supporting vehicle to everything communication

An operation method of a terminal located in a vehicle supporting vehicle-to-everything (V2X) communication, the operation method comprising:

• receiving, from a base station, a first message requesting reconfiguration of a first counter corresponding to a channel busy ratio (CBR) measurement cycle for a resource pool selection procedure;
• comparing, by the terminal, the first counter and a second counter corresponding to a CBR measurement cycle for a carrier selection procedure;
• and
• reconfiguring, by the terminal, the first counter such that the first counter is greater than or equal to the second counter when the first counter is shorter than the second counter.

An operation method of a terminal located in a vehicle supporting vehicle-to-everything (V2X) communication, the operation method comprising:

• receiving, from a base station, a first message requesting reporting of a first counter corresponding to a channel busy ratio (CBR) measurement cycle for a carrier reselection procedure;
• transmitting, by the terminal, a second message including the first counter to the base station;
• and
• receiving, from the base station, a third message including a second counter corresponding to a CBR measurement cycle for a resource pool reselection procedure,
• wherein the second counter is reconfigured by the base station to be greater than or equal to the first counter.

An operation method of a terminal located in a vehicle supporting vehicle-to-everything (V2X) communication, the operation method comprising:

• receiving, from a base station, a first message requesting reconfiguration of a first counter corresponding to a channel busy ratio (CBR) measurement cycle for a resource pool reselection procedure;
• comparing, by the terminal, the first counter and a second counter corresponding to a CBR measurement cycle for a carrier reselection procedure;
• and
• reconfiguring, by the terminal, the first counter such that the first counter is greater than or equal to the second counter when the first counter is shorter than the second counter.