METHOD AND DEVICE IN NODES USED FOR WIRELESS COMMUNICATION
A first node receives a first signaling; performs a first channel sensing in a first resource pool; and determines a target resource pool; and selects a target time-frequency resource block in the target resource pool; and transmits a second signaling on the target time-frequency resource block; the first signaling indicates a first reference resource set, the first reference resource set comprising at least one time-frequency resource block; the first channel sensing is used to determine the target resource pool; a first candidate time-frequency resource block is a time-frequency resource block in the target resource pool; whether the first candidate time-frequency resource block belongs to the first reference resource set is used to determine whether the first candidate time-frequency resource block is chosen as the target time-frequency resource block. This application makes full use of inter-user coordinated resources so that the freedom degree of resource selection can be guaranteed.
1 . A first node for wireless communications, comprising:
a first receiver, receiving a first signaling; performing a first channel sensing in a first resource pool; and determining a target resource pool; and
a first transmitter, selecting a target time-frequency resource block in the target resource pool; and transmitting a second signaling on the target time-frequency resource block;
wherein the first signaling indicates a first reference resource set, the first reference resource set comprising at least one time-frequency resource block; the first channel sensing is used to determine the target resource pool; a first candidate time-frequency resource block is a time-frequency resource block in the target resource pool; whether the first candidate time-frequency resource block belongs to the first reference resource set is used to determine whether the first candidate time-frequency resource block is chosen as the target time-frequency resource block; the second signaling is used to indicate the target time-frequency resource block.
2 . The first node according to claim 1 , wherein the first reference resource set indicated by the first signaling and the first channel sensing are used together to determine the target resource pool.
3 . The first node according to claim 1 , wherein the first candidate time-frequency resource block is associated with a first time-frequency resource block; the first resource pool comprises the first time-frequency resource block; a measurement value for the first time-frequency resource block and whether the first candidate time-frequency resource block belongs to the first reference resource set are used together to determine whether the first candidate time-frequency resource block is chosen as the target time-frequency resource block.
4 . The first node according to claim 1 , comprising:
the first receiver, receiving a third signaling;
wherein the third signaling indicates a second resource pool, the second resource pool comprising a third time-frequency resource block, a third candidate time-frequency resource block being associated with the third time-frequency resource block; the second resource pool is used to determine the first resource pool, the first resource pool not comprising the third time-frequency resource block; the first signaling is used to determine whether the third candidate time-frequency resource block belongs to the target resource pool.
5 . The first node according to claim 1 , wherein the first resource pool comprises a fourth time-frequency resource block, a fourth candidate time-frequency resource block being associated with the fourth time-frequency resource block; a measurement value for the fourth time-frequency resource block is higher than a first threshold; the first signaling and a first offset value are used together to determine whether the fourth candidate time-frequency resource block belongs to the target resource pool.
6 . The first node according to claim 1 , wherein the first reference resource set is time-frequency resources recommended by a transmitter transmitting the first signaling to the first node for transmitting.
7 . The first node according to claim 3 , wherein when the first candidate time-frequency resource block belongs to the first reference resource set, whether a measurement value for the first time-frequency resource block is higher than a measurement value for the second time-frequency resource block is used to determine whether the first candidate time-frequency resource block is chosen as the target time-frequency resource block; when the first candidate time-frequency resource block does not belong to the first reference resource set, the first candidate time-frequency resource block is not chosen as the target time-frequency resource block.
8 . The first node according to claim 7 , wherein the first candidate time-frequency resource block belongs to the first reference resource set; when a measurement value for the first time-frequency resource block is lower than or equal to a measurement value for the second time-frequency resource block, the first candidate time-frequency resource block is chosen as the target time-frequency resource block; when a measurement value for the first time-frequency resource block is higher than a measurement value for the second time-frequency resource block, the first candidate time-frequency resource block is not chosen as the target time-frequency resource block.
9 . The first node according to claim 1 , wherein the first resource pool comprises a fourth time-frequency resource block, a fourth candidate time-frequency resource block being associated with the fourth time-frequency resource block; when the fourth candidate time-frequency resource block does not belong to the first reference resource set, the fourth candidate time-frequency resource block does not belong to the target resource pool; when the fourth candidate time-frequency resource block belongs to the first reference resource set, whether a measurement value for the fourth time-frequency resource block is higher than a sum of a first threshold and a first offset value is used to determine whether the fourth candidate time-frequency resource block belongs to the target resource pool.
10 . The first node according to claim 5 , wherein when the measurement value for the fourth time-frequency resource block is lower than or equal to a sum of the first threshold and the first offset value, the fourth candidate time-frequency resource block belongs to the target resource pool; when the measurement value for the fourth time-frequency resource block is higher than a sum of the first threshold and the first offset value, the fourth candidate time-frequency resource block does not belong to the target resource pool.
11 . The first node according to claim 9 , wherein when the measurement value for the fourth time-frequency resource block is lower than or equal to a sum of the first threshold and the first offset value, the fourth candidate time-frequency resource block belongs to the target resource pool; when the measurement value for the fourth time-frequency resource block is higher than a sum of the first threshold and the first offset value, the fourth candidate time-frequency resource block does not belong to the target resource pool.
12 . A method in a first node for wireless communications, comprising:
receiving a first signaling; performing a first channel sensing in a first resource pool; and determining a target resource pool; and
selecting a target time-frequency resource block in the target resource pool; and transmitting a second signaling on the target time-frequency resource block;
wherein the first signaling indicates a first reference resource set, the first reference resource set comprising at least one time-frequency resource block; the first channel sensing is used to determine the target resource pool; a first candidate time-frequency resource block is a time-frequency resource block in the target resource pool; whether the first candidate time-frequency resource block belongs to the first reference resource set is used to determine whether the first candidate time-frequency resource block is chosen as the target time-frequency resource block; the second signaling is used to indicate the target time-frequency resource block.
13 . The method according to claim 12 , wherein the first reference resource set indicated by the first signaling and the first channel sensing are used together to determine the target resource pool.
14 . The method according to claim 12 , wherein the first candidate time-frequency resource block is associated with a first time-frequency resource block; the first resource pool comprises the first time-frequency resource block; a measurement value for the first time-frequency resource block and whether the first candidate time-frequency resource block belongs to the first reference resource set are used together to determine whether the first candidate time-frequency resource block is chosen as the target time-frequency resource block.
15 . The method according to claim 12 , comprising:
receiving a third signaling;
wherein the third signaling indicates a second resource pool, the second resource pool comprising a third time-frequency resource block, a third candidate time-frequency resource block being associated with the third time-frequency resource block; the second resource pool is used to determine the first resource pool, the first resource pool not comprising the third time-frequency resource block; the first signaling is used to determine whether the third candidate time-frequency resource block belongs to the target resource pool.
16 . The method according to claim 12 , wherein the first resource pool comprises a fourth time-frequency resource block, a fourth candidate time-frequency resource block being associated with the fourth time-frequency resource block; a measurement value for the fourth time-frequency resource block is higher than a first threshold; the first signaling and a first offset value are used together to determine whether the fourth candidate time-frequency resource block belongs to the target resource pool.
17 . The method in the first node according to claim 12 , wherein the first reference resource set is time-frequency resources recommended by a transmitter transmitting the first signaling to the first node for transmitting.
18 . The method in the first node according to claim 14 , wherein when the first candidate time-frequency resource block belongs to the first reference resource set, whether a measurement value for the first time-frequency resource block is higher than a measurement value for the second time-frequency resource block is used to determine whether the first candidate time-frequency resource block is chosen as the target time-frequency resource block; when the first candidate time-frequency resource block does not belong to the first reference resource set, the first candidate time-frequency resource block is not chosen as the target time-frequency resource block.
19 . The method in the first node according to claim 18 , wherein the first candidate time-frequency resource block belongs to the first reference resource set; when a measurement value for the first time-frequency resource block is lower than or equal to a measurement value for the second time-frequency resource block, the first candidate time-frequency resource block is chosen as the target time-frequency resource block; when a measurement value for the first time-frequency resource block is higher than a measurement value for the second time-frequency resource block, the first candidate time-frequency resource block is not chosen as the target time-frequency resource block.
20 . A second node for wireless communications, comprising:
a second transmitter, transmitting a first signaling; and
a second receiver, receiving a second signaling on a target time-frequency resource block;
wherein the first signaling is used to indicate a first reference resource set, the first reference resource set comprising at least one time-frequency resource block; whether the first reference resource set comprises a first candidate time-frequency resource block is used by a receiver receiving the first signaling to determine whether the first candidate time-frequency resource block is chosen as the target time-frequency resource block; the second signaling indicates the target time-frequency resource block.