Method for transmitting or receiving V2X signal in wireless communication system and device for performing same
A method by which a terminal transmits a signal in a wireless communication system supporting vehicle to everything (V2X), according to one embodiment of the present invention, comprises the steps of: measuring a path loss for a stationary node; and transmitting a V2X signal on the basis of a V2X transmission period or an event trigger, wherein, when the V2X signal is transmitted in a periodically set open loop power control (OLPC) resource region, transmission power of the V2X signal is determined on the basis of the measured path loss, and a period of the OLPC resource region can be set to be independent from the V2X transmission period.
1. A method of transmitting a signal by a user equipment (UE) in a wireless communication system supporting vehicle to everything (V2X), the method comprising:
measuring a pathloss for a fixed node; and
transmitting a V2X signal based on a V2X transmission periodicity or an event trigger,
wherein when transmission of the V2X signal is performed in an open loop power control (OLPC) resource region that is configured periodically, transmit power of the V2X signal is determined based on the measured pathloss and
wherein a periodicity of the OLPC resource region is configured independently of the V2X transmission periodicity.
2. The method of claim 1 , wherein the periodicity of the OLPC resource region is configured as a value relative prime with the V2X transmission periodicity.
3. The method of claim 1 , wherein when the transmission of the V2X signal is performed based on the event trigger, the UE is configured to transmit the V2X signal at least one time in the OLPC resource region.
4. The method of claim 1 , wherein the periodically configured OLPC resource region comprises a first region where the fixed node overhears the V2X signal.
5. The method of claim 4 ,
wherein the periodically configured OLPC resource region comprises a second region where the fixed node performs transmission and
wherein the fixed node transmits the overheard V2X signal to a different fixed node in the second region.
6. The method of claim 1 , wherein when the transmission of the V2X signal is performed in a different resource region, the transmit power of the V2X signal is fixed to a prescribed value irrespective of the measured pathloss.
7. The method of claim 1 , wherein the fixed node corresponds to a fixed node having highest reception power among fixed nodes adjacent to the UE.
8. A method of receiving a signal by a fixed node in a wireless communication system supporting vehicle to everything (V2X), the method comprising:
transmitting a reference signal for measuring a pathloss to a user equipment (UE); and
receiving, through an open loop power control (OLPC) resource region that is configured periodically, a V2X signal transmitted based on a V2X transmission periodicity or an event trigger,
wherein transmit power of the V2X signal is determined based on the measurement of the pathloss and
wherein a periodicity of the OLPC resource region is configured independently of the V2X transmission periodicity.
9. The method of claim 8 , wherein the periodicity of the OLPC resource region is configured as a value relative prime with the V2X transmission periodicity.
10. The method of claim 1 ,
wherein the periodically configured OLPC resource region comprises a first region where the fixed node overhears the V2X signal and a second region where the fixed node performs transmission and
wherein the fixed node transmits the overheard V2X signal to a different fixed node in the second region.
11. A user equipment in a wireless communication system supporting vehicle to everything (V2X), comprising:
a processor to measure a pathloss for a fixed node; and
a transmitter to transmit a V2X signal based on a V2X transmission periodicity or an event trigger,
wherein when transmission of the V2X signal is performed in an open loop power control (OLPC) resource region that is configured periodically, transmit power of the V2X signal is determined based on the measured pathloss and
wherein a periodicity of the OLPC resource region is configured independently of the V2X transmission periodicity.
12. The user equipment of claim 11 , wherein the periodicity of the OLPC resource region is configured as a value relative prime with the V2X transmission periodicity.
13. The user equipment of claim 11 , wherein when the transmission of the V2X signal is performed based on the event trigger, the user equipment is configured to transmit the V2X signal at least one time in the OLPC resource region.
14. The user equipment of claim 11 , wherein the periodically configured OLPC resource region comprises a first region where the fixed node overhears the V2X signal.
15. The user equipment of claim 14 ,
wherein the periodically configured OLPC resource region comprises a second region where the fixed node performs transmission and
wherein the fixed node transmits the overheard V2X signal to a different fixed node in the second region.