Method and device for transmitting and receiving, by V2X terminal, signal in wireless communication system
One embodiment of the present invention relates to a method by which a terminal transmits and receives a vehicle to everything (V2X) related signal in a wireless communication system, comprising the steps of: selecting a resource pool by comparing at least one piece of measurement information with a resource pool parameter; and transmitting data by using the resource pool, wherein the at least one piece of measurement information is related to a geographical location of the terminal.
1. A method, performed at a user equipment (UE) in a wireless communication system, the method comprising:
selecting a resource pool based on at least one measurement information;
determining a number of repetitive transmissions of a PSSCH (Physical sidelink shared channel) based on a movement speed of the UE included in the at least one measurement information; and
transmitting the PSSCH to a neighboring UE in the selected resource pool based on the determined the number of repetitive transmissions of the PSSCH,
wherein the number of repetitive transmissions of the PSSCH is differently determined according to whether the movement speed of the UE is greater than a reference value.
2. The method according to claim 1 ,
wherein the at least one measurement information is related to a geographical position of the UE.
3. The method according to claim 1 ,
wherein the at least one measurement information includes movement direction information of the UE.
4. The method according to claim 3 ,
wherein the movement direction information of the UE is measured by a sensor or a global positioning system (GPS) of the UE.
5. The method according to claim 4 ,
wherein the movement direction information of the UE is derived from change in cell ID.
6. The method according to claim 5 ,
wherein the cell ID is identifier information for identifying a road side unit (RSU).
7. The method according to claim 1 , wherein the at least one measurement information is an average of movement speeds of UEs located near the UE.
8. The method according to claim 7 ,
wherein when the average of the movement speeds of the UEs located near the UE is less than a preset threshold value, the number of repetitive transmissions is reduced.
9. The method according to claim 7 ,
wherein the movement speed is measured by a speed sensor of the UE.
10. The method according to claim 7 , wherein the movement speed is determined by the number of times of detection of road side units (RSUs) each having a predetermined reference signal received power (RSRP) or more.
11. The method according to claim 1 , wherein the UE transmits the PSSCH on predetermined time-frequency resources of the resource pool.
12. The method according to claim 3 , wherein the resource pool is divided according to the movement direction information of the UE.
13. A user equipment (UE) for transmitting and receiving in a wireless communication system, the UE comprising:
a transmitter and a receiver;
a processor operatively coupled to the transmitter and the receiver,
wherein the processor selects a resource pool based on at least one measurement information, determines a number of repetitive transmissions of a PSSCH (Physical sidelink shared channel) based on a movement speed of the UE included in the at least one measurement information, and transmits via the transmitter the PSSCH to a neighboring UE in the selected resource pool based on the determined the number of repetitive transmissions of the PSSCH, and
wherein the number of repetitive transmissions of the PSSCH is differently determined according to whether the movement speed of the UE is greater than a reference value.