Method and device used for DRX in wireless communication
View Patent ↗The present disclosure provides a method and a device in wireless communications for Discontinuous Reception (DRX). A first node receives first information, the first information used for determining an Active Time in a first time resource pool; and senses a target signaling in a first time resource sub-pool; and transmits a first radio signal in a first time-frequency resource block, the first time-frequency resource block belonging to a first resource pool, the first resource pool being either one of a first candidate resource pool and a second candidate resource pool; the first time resource sub-pool belongs to the Active Time in the first time resource pool. The present disclosure takes into account the influence of DRX over the time-frequency resource selection in sidelink transmissions, thereby improving success rate of transmission.
1. A first node for wireless communications, comprising:
a first receiver, which receives first information, the first information being used for determining an active time in a first time resource pool; and which senses a target signaling in a first time resource sub-pool; and
a first transmitter, which transmits a first radio signal in a first time-frequency resource block, the first time-frequency resource block belonging to a first resource pool, the first resource pool being either one of a first candidate resource pool and a second candidate resource pool; wherein:
the first time resource sub-pool belongs to the active time in the first time resource pool;
a length of the first time resource sub-pool is used for determining the first resource pool between the first candidate resource pool and the second candidate resource pool;
the sensing performed in the first time resource sub-pool is in the first candidate resource pool rather than in the second candidate resource pool; and
when the second candidate resource pool is determined as the first resource pool, the first time-frequency resource block is selected at random.
2. The first node according to claim 1 , comprising:
maintaining a first timer;
wherein the active time in the first time resource pool comprises operation time of the first timer.
3. The first node according to claim 1 , comprising:
the active time in the first time resource pool comprising downlink reception time;
wherein the first radio signal is transmitted on sidelink.
4. The first node according to claim 1 , comprising:
the first receiver, which performs measurement in the first time resource sub-pool;
wherein the first resource pool is the first candidate resource pool, and a first parameter set is used for determining the first time-frequency resource block from the first candidate resource pool, the first parameter set belonging to a first candidate parameter set, the first candidate parameter set being determined based on the measurement in the first time resource sub-pool.
5. The first node according to claim 1 , comprising:
when the length of the first time resource sub-pool is greater than a first threshold, determining the first resource pool from the first candidate resource pool; when the length of the first time resource sub-pool is smaller than a first threshold, determining the first resource pool from the second candidate resource pool.
6. The first node according to claim 1 , wherein:
a first bit block is used for generating the first radio signal, and
the first resource pool is determined between the first candidate resource pool and the second candidate resource pool based on whether an initial transmission of the first bit block is arranged in a transmission of the first radio signal.
7. The first node according to claim 6 , wherein when the initial transmission of the first bit block is arranged in the transmission of the first radio signal:
when the length of the first time resource sub-pool is greater than the first threshold, the first candidate resource pool is determined as the first resource pool; and
when the length of the first time resource sub-pool is smaller than the first threshold, the second candidate resource pool is determined as the first resource pool.
8. The first node according to claim 6 , wherein the initial transmission of the first bit block comprises when K repetitions are configured, the first node transmitting the first bit block in a first transmission occasion of K transmission occasions.
9. The first node according to claim 1 , wherein:
the first receiver receives second information and third information; and
the second information is used for determining the first candidate resource pool, while the third information is used for determining the second candidate resource pool.
10. A second node for wireless communications, comprising:
a second transmitter, which transmits first information, the first information being used for indicating an active time in a first time resource pool; a target signaling being sensed in a first time resource sub-pool;
a first time-frequency resource block being used for transmitting a first radio signal, and the first time-frequency resource block belonging to a first resource pool, the first resource pool being either one of a first candidate resource pool and a second candidate resource pool; wherein:
the first time resource sub-pool belongs to the active time in the first time resource pool; and
a length of the first time resource sub-pool is used for determining the first resource pool between the first candidate resource pool and the second candidate resource pool;
the sensing performed in the first time resource sub-pool is in the first candidate resource pool rather than in the second candidate resource pool; and
when the second candidate resource pool is determined as the first resource pool, the first time-frequency resource block is selected at random.
11. The second node according to claim 10 , comprising:
a first timer being maintained;
wherein the active time in the first time resource pool comprises operation time of the first timer.
12. The second node according to claim 10 , comprising:
the active time in the first time resource pool comprising downlink reception time;
wherein the first radio signal is transmitted on sidelink.
13. The second node according to claim 10 , comprising:
the target signaling being measured in the first time resource sub-pool;
wherein the first resource pool is the first candidate resource pool, and a first parameter set is used for determining the first time-frequency resource block from the first candidate resource pool, the first parameter set belonging to a first candidate parameter set, the first candidate parameter set being determined based on the measurement in the first time resource sub-pool.
14. The second node according to claim 10 , comprising:
when the length of the first time resource sub-pool is greater than a first threshold, determining the first resource pool from the first candidate resource pool; when the length of the first time resource sub-pool is smaller than a first threshold, determining the first resource pool from the second candidate resource pool.
15. The second node according to claim 10 , wherein:
a first bit block is used for generating the first radio signal, and
the first resource pool is determined between the first candidate resource pool and the second candidate resource pool based on whether an initial transmission of the first bit block is arranged in a transmission of the first radio signal.
16. The second node according to claim 15 , wherein: when the initial transmission of the first bit block is arranged in the transmission of the first radio signal:
when the length of the first time resource sub-pool is greater than the first threshold, the first candidate resource pool is determined as the first resource pool; and
when the length of the first time resource sub-pool is smaller than the first threshold, the second candidate resource pool is determined as the first resource pool.
17. The second node according to claim 15 , wherein the initial transmission of the first bit block comprises: when K repetitions are configured, transmitting the first bit block in a first transmission occasion of K transmission occasions.
18. The second node according to claim 10 , wherein:
the second transmitter transmits second information and third information; and
the second information is used for indicating the first candidate resource pool, while the third information is used for indicating the second candidate resource pool.
19. A method in a first node for wireless communications, comprising:
receiving first information, the first information being used for determining an active time in a first time resource pool;
sensing a target signaling in a first time resource sub-pool; and
transmitting a first radio signal in a first time-frequency resource block, the first time-frequency resource block belonging to a first resource pool, the first resource pool being either one of a first candidate resource pool and a second candidate resource pool; wherein:
the first time resource sub-pool belongs to the active time in the first time resource pool;
a length of the first time resource sub-pool is used for determining the first resource pool between the first candidate resource pool and the second candidate resource pool;
the sensing performed in the first time resource sub-pool is in the first candidate resource pool rather than in the second candidate resource pool; and
when the second candidate resource pool is determined as the first resource pool, the first time-frequency resource block is selected at random.
20. The method in the first node according to claim 19 , wherein:
a first bit block being used for generating the first radio signal, and
the first resource pool is determined between the first candidate resource pool and the second candidate resource pool based on whether an initial transmission of the first radio signal is arranged in a transmission of the first bit block.