Method and device in nodes used for wireless communication
The present application discloses a method and a device in nodes used for wireless communications. The first node receives a first signaling and a second signaling; and performs a first channel sensing operation on a first sub-band; and transmits a first radio signal in a first time-frequency resource group on the first sub-band, or, drops transmitting a first radio signal in a first time-frequency resource group on the first sub-band. Herein, the first signaling is used to determine a first reference signal resource group, the first signaling being non-unicast; the second signaling indicates a second reference signal resource group; when the first time-frequency resource group belongs to a first time window in time domain. With the method provided in the present application, the type of channel sensing operation can be determined according to spatial parameters of a radio signal, which helps enhance the transmission opportunity and reduce the overhead.
1 . A first node for wireless communications, comprising:
a transceiver configured to receive a first signaling and a second signaling;
the transceiver configured to perform a channel sensing operation on a sub-band, wherein the channel sensing operation includes directional listen before talk (LBT) for multiple transmitting beams;
a processor operatively coupled to the transceiver, the processor configured to determine, based on the channel sensing operation, whether to transmit a radio signal in a time-frequency resource group on the sub-band, or, to not transmit the radio signal in the first time-frequency resource group on the sub-band,
wherein the first signaling is used to determine a first information, the first signaling being non-unicast,
wherein the second signaling indicates a second information,
wherein the time-frequency resource group is within a first time window in a time domain,
wherein the first time window is a channel occupancy time (COT),
wherein the first information and the second information are used together to determine a type of the first channel sensing operation from a first candidate type set,
wherein the first candidate type set comprises at least a first type and a second type; and
the transceiver further configured to transmit or not transmit the radio signal based on the determination by the processor.
2 . The first node according to claim 1 , wherein the second signaling indicates the first time-frequency resource group.
3 . The first node according to claim 1 , comprising:
the transceiver configured to receive a third signaling before receiving the second signaling, the third signaling indicating a third reference signal resource group; and
the transceiver configured to transmit a fourth signaling, the fourth signaling being used to determine whether the second signaling is correctly received at a receiver.
4 . The first node according to claim 1 , wherein the channel occupancy time (COT) is after the channel sensing operation.
5 . The first node according to claim 1 , wherein before the first receiver receives the first signaling, an initial channel sensing operation is performed.
6 . The first node according to claim 1 , wherein a first reference signal resource group and a second reference signal resource group are not spatially correlated, wherein the reference signal resource group is determined from the first signaling, and second reference signal resource group is indicated by the second signaling.
7 . The first node according to claim 1 , wherein the channel sensing operation is performed on spectrum above 52.6 GHz.
8 . A second node for wireless communications, comprising:
a transceiver configured to transmit a first signaling and a second signaling;
the transceiver configured to perform a channel sensing operation on a sub-band, wherein the channel sensing operation includes directional listen before talk (LBT) for multiple transmitting beams; and
the transceiver configured to receive a radio signal on a time-frequency resource group,
wherein the first signaling is used to indicate a first information, the first signaling being non-unicast,
wherein the second signaling indicates a second information,
wherein the channel sensing operation is used to determine a first time window,
wherein the time-frequency resource group is within the first time window in time domain,
wherein the first time window is a channel occupancy time (COT),
wherein both the first information and the second information indicate parameters for determining a type of the channel sensing operation from a first candidate type set, and
wherein the first candidate type set comprises at least a first type and a second type.
9 . The second node according to claim 8 , wherein the second signaling indicates the first time-frequency resource group.
10 . The second node according to claim 8 , comprising:
the transceiver configured to transmit a third signaling before receiving the second signaling, the third signaling indicating a third reference signal resource group; and
the transceiver configured to receive a fourth signaling, the fourth signaling being used to determine whether the second signaling is correctly received at the second node.
11 . The second node according to claim 8 , wherein the channel occupancy time (COT) is after the channel sensing operation.
12 . The second node according to claim 8 , wherein before the second transmitter transmits the first signaling, an initial channel sensing operation is performed.
13 . The second node according to claim 8 , wherein the reference signal resource group and a second reference signal resource group are not spatially correlated, wherein the reference signal resource group is determined from the first signaling, and second reference signal resource group is indicated by the second signaling.
14 . The second node according to claim 8 , wherein the channel sensing operation on spectrum above 52.6 GHz.
15 . A method performed by a first node for wireless communications, comprising:
receiving a first signaling and a second signaling;
performing a channel sensing operation on a sub-band, wherein the channel sensing operation includes directional listen before talk (LBT) for multiple transmitting beams;
transmitting a radio signal in a time-frequency resource group on the sub-band, or, or not to transmitting the radio signal in the time-frequency resource group on the sub-band based on performing the channel sensing operation,
wherein the first signaling is used to determine a first information, the first signaling being non-unicast,
wherein the second signaling indicates a second information,
wherein the time-frequency resource group is within a first time window in time domain,
wherein the first time window is a channel occupancy time (COT),
wherein the first information and the second information are used together to determine a type of the first channel sensing operation from a first candidate type set, and
wherein the first candidate type set comprises at least a first type and a second type.
16 . The method according to claim 15 , wherein the second signaling indicates the first time-frequency resource group.
17 . The method according to claim 15 , comprising:
receiving a third signaling before receiving the second signaling, the third signaling indicating a third reference signal resource group; and
transmitting a fourth signaling, the fourth signaling being used to determine whether the second signaling is correctly received.
18 . The method according to claim 15 , the channel occupancy time (COT) is after the channel sensing operation.
19 . The method according to claim 15 , wherein the channel sensing operation is performed on spectrum above 52.6 GHz.
20 . The method according to claim 15 , wherein the reference signal resource group and a second reference signal resource group are not spatially correlated, wherein the reference signal resource group is determined from the first signaling, and second reference signal resource group is indicated by the second signaling.