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 informing at least one resource selection mechanism for 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 informs 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.
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. The method of claim 1 , wherein, in response to the partial sensing is allowed in the resource pool, the UE semi-persistently reserves resources selected based on the partial sensing.
5. The method of claim 1 , wherein, in response to only the random selection is allowed in the resource pool, the UE does not semi-persistently reserve resources selected based on the random selection.
6. The method of claim 1 , wherein, in response to the partial sensing is allowed in the resource pool and in response to the UE performs the random selection in the resource pool, the UE semi-persistently reserves the randomly selected resources.
7. The method of claim 1 , wherein the UE is a UE communicating with another UE that operates in a vehicle.
8. 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 informing at least one resource selection mechanism for 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 informs 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.
9. The user equipment of claim 8 , 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.
10. The user equipment of claim 9 , wherein the sensing window comprises 1,000 consecutive subframes, and wherein the selecting window comprises 100 consecutive subframes located after the sensing window.
11. The user equipment of claim 8 , wherein, in response to the partial sensing is allowed in the resource pool, the UE semi-persistently reserves resources selected based on the partial sensing.
12. The user equipment of claim 8 , wherein, in response to only the random selection is allowed in the resource pool, the UE does not semi-persistently reserve resources selected based on the random selection.
13. The user equipment of claim 8 , wherein in response to the partial sensing is allowed in the resource pool and in response to the UE performs the random selection in the resource pool, the UE semi-persistently reserves the randomly selected resources.