Method and device for configuring communication channel using sidelink in wireless communication between nodes
The present disclosure provides a method and device in nodes used for wireless communications. A first node first receives a first signaling, and then receives a second signaling in a first time-frequency resource set; the first signaling is used to indicate the first time-frequency resource set, and the second signaling occupies the first time-frequency resource set; the second signaling is used to configure a format of a first-type channel, the format of the first-type channel is related to a frequency bandwidth corresponding to a second-type channel associated with the first-type channel, or the format of the first-type channel is related to a first parameter of the first-type channel; the first signaling is a physical layer signaling. The present disclosure optimizes the configuration method of feedback channel on sidelink to improve the efficiency of spectrum on sidelink and the overall performance of the system.
1. A first node for wireless communications, comprising:
a first transceiver configured to receive a first signaling, the first signaling being a physical layer signaling used to indicate a first time-frequency resource set;
a first receiver configured to receive a second signaling that occupies the first time-frequency resource set; and
a second transceiver configured to receive a target signal in a second-type channel and to transmit a target information group in a first-type channel;
a format of the first-type channel carrying the target information group is configured according to the second signaling and (i) a frequency bandwidth of the target signal or (ii) a second parameter of the target information group,
the format of the first-type channel is that one of a plurality of candidate formats, each having a respective associated candidate frequency bandwidth, associated with a frequency bandwidth corresponding to the second-type channel; and
the target information group is used to determine whether the target signal is correctly received.
2. The first node according to claim 1 , wherein the format of the first-type channel is one of a plurality of candidate formats associated with a first configuration of the first-type channel, the first configuration being a configuration in a time domain.
3. The first node according to claim 1 , wherein a number of multicarrier symbol(s) occupied by the first-type channel in a slot is used to determine the format of the first-type channel.
4. The first node according to claim 1 , wherein the first transceiver transmits a first signal used to request a configuration information set of the first-type channel, and the configuration information set comprises the format of the first-type channel.
5. The first node according to claim 1 , wherein the first signaling is used to indicate time-domain resources occupied by the second signaling.
6. The first node according to claim 1 , wherein:
the second signaling indicates a plurality of candidate time-frequency resource pools, and the plurality of candidate time-frequency resource pools are respectively associated with the plurality of candidate formats; and
the first-type channel is transmitted in a first time-frequency resource pool of the plurality of candidate time-frequency resource pools, and the format of the first-type channel is one of the plurality of candidate formats associated with the first time-frequency resource pool.
7. The first node according to claim 1 , wherein:
the format of the first-type channel is one of candidate formats, and is a positive integer not less than 2; and
the K1 candidate formats at least comprise a first candidate format and a second candidate format, a first-type channel corresponding to the first candidate format is generated through sequence, and a first-type channel corresponding to the second candidate format is generated through coding.
8. The first node according to claim 7 , wherein the K1 candidate formats at least comprise a third candidate format, and a first-type channel corresponding to the third candidate format is repeatedly transmitted.
9. The first node according to claim 1 , wherein a number of information bit(s) carried by the first-type channel is used to determine the format of the first-type signal.
10. The first node according to claim 1 , wherein a frequency bandwidth occupied by the first-type channel is used to determine the format adopted by the first-type signal.
11. The first node according to claim 1 , wherein the second signaling comprises a plurality of sub-signalings, and the plurality of sub-signalings respectively comprise configuration information sets of the first-type channel in the plurality of candidate formats.
12. A method in a first node for wireless communications, comprising:
receiving a first signaling, the first signaling being a physical layer signaling used to indicate a first time-frequency resource set;
receiving a second signaling that occupies the first time-frequency resource set; and
receiving a target signal in a second-type channel and transmitting a target information group in a first-type channel
wherein:
the second signaling and (i) a frequency bandwidth of the target signal, or (ii) a second parameter of the target information group is used to configure a format of a first-type channel, the format of the first-type channel is that one of a plurality of candidate formats, each having a respective associated candidate frequency bandwidth, associated with a frequency bandwidth corresponding to the second-type channel; and
the target information group is used to determine whether the target signal is correctly received.