V2X transmission resource selecting method implemented by terminal in wireless communication system and terminal using same
Disclosed are a V2X (vehicle-to-everything) transmission resource selecting method implemented by a terminal in a wireless communication system and a terminal using the method. The method is characterized by: receiving type information for indicating the type of a resource pool; and executing a resource selection, on the basis of partial sensing, and/or a random selection from the resource pool on the basis of the type information.
1. A method for selecting a sidelink transmission resource in a wireless communication system, the method performed by a user equipment (UE) and comprising:
receiving type information indicating at least one resource selection mechanism allowed in a resource pool; and
performing a resource selection by one resource selection mechanism, among a partial sensing and a random selection, in the resource pool based on the type information,
wherein the type information indicates whether the partial sensing is allowed for the UE selecting a resource in the resource pool and whether the random selection is allowed for the UE selecting a resource in the resource pool, and
wherein:
based on i) the type information indicating both the partial sensing and the random selection are allowed in a resource pool and ii) the UE performing the resource selection by the random selection in the resource pool, resources selected by the random selection are reserved for a predetermined period of time.
2. The method of claim 1 , wherein the partial sensing is a resource selection mechanism that the UE senses only some subframes, among subframes in a sensing window, and selects a specific subframe in a selection window as a sidelink transmission subframe based on the sensing result.
3. The method of claim 2 , wherein the sensing window comprises 1,000 consecutive subframes, and wherein the selecting window comprises 100 consecutive subframes located after the sensing window.
4. A user equipment (UE), comprising:
a transceiver;
at least one processor; and
at least one computer memory operatively connected to the at least one processor and storing instructions that, based on being executed by the at least one processor, perform operations comprising:
receiving, via the transceiver, type information indicating at least one resource selection mechanism allowed in a resource pool, and
performing a resource selection by one resource selection mechanism, among a random selection and a partial sensing, in the resource pool based on the type information,
wherein the type information indicates whether the partial sensing is allowed for the UE selecting a resource in the resource pool and whether the random selection is allowed for the UE selecting a resource in the resource pool, and
wherein:
based on i) the type information indicating both the partial sensing and the random selection are allowed in a resource pool and ii) the UE performing the resource selection by the random selection in the resource pool, resources selected by the random selection are reserved for a predetermined period of time.
5. The UE of claim 4 , wherein the partial sensing is a resource selection mechanism that the UE senses only some subframes, among subframes in a sensing window, and selects a specific subframe in a selection window as a sidelink transmission subframe based on the sensing result.
6. The UE of claim 5 , wherein the sensing window comprises 1,000 consecutive subframes, and wherein the selecting window comprises 100 consecutive subframes located after the sensing window.
7. An apparatus, the apparatus comprising:
at least one processor; and
at least one computer memory operatively connected to the at least one processor and storing instructions that, based on being executed by the at least one processor, perform operations comprising:
receiving type information indicating at least one resource selection mechanism allowed in a resource pool, and
performing a resource selection by one resource selection mechanism, among a random selection and a partial sensing, in the resource pool based on the type information,
wherein the type information indicates whether the partial sensing is allowed for the apparatus selecting a resource in the resource pool and whether the random selection is allowed for the apparatus selecting a resource in the resource pool, and
wherein:
based on i) the type information indicating both the partial sensing and the random selection are allowed in a resource pool and ii) the at least one processor performing the resource selection by the random selection in the resource pool, resources selected by the random selection are reserved for a predetermined period of time.
8. The apparatus of claim 7 , wherein the partial sensing is a resource selection mechanism that the apparatus senses only some subframes, among subframes in a sensing window, and selects a specific subframe in a selection window as a sidelink transmission subframe based on the sensing result.
9. The apparatus of claim 8 , wherein the sensing window comprises 1,000 consecutive subframes, and wherein the selecting window comprises 100 consecutive subframes located after the sensing window.