Disclosed are an information sending method and apparatus, an information receiving method and apparatus, and a device and a storage medium, wherein same relate to the field of mobile communications. The information sending method comprises: a terminal device sending a negative acknowledgement (NACK) to a network device on an uplink resource when sidelink data transmitted on a sidelink resource does not need sidelink feedback. The information receiving method comprises: a network device receiving a NACK sent by a terminal device on an uplink resource; and allocating a retransmission resource of sidelink data to the terminal device according to the NACK. By means of the present application, uplink resources can be effectively utilized, and the transmission success rate of sidelink data and the resource utilization rate of the uplink resources can be improved.

A channel state information CSI report feedback method, a terminal device, and a network device. The method includes: obtaining a CSI report configuration and one or more CSI measurement resource groups corresponding to the CSI report configuration, where each CSI measurement resource group includes one or more CSI measurement resources, each CSI measurement resource group includes a channel measurement resource group and/or an interference measurement resource group, and each CSI measurement resource includes a channel measurement resource and/or an interference measurement resource; generating a CSI report based on the CSI report configuration and the one or more CSI measurement resource groups; and reporting the CSI report.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first user equipment (UE) may receive a communication from a second UE. The first UE may select an index that represents multiple control bits associated with the communication. The first UE may transmit an indication of the index in a portion of a physical sidelink feedback channel (PSFCH) resource pool that is selected based at least in part on the index. Numerous other aspects are described.

Apparatuses, methods, and systems are disclosed for sidelink HARQ operation. One apparatus includes a memory coupled to a processor, where the processor is configured to cause the second apparatus to receive a SL grant for a SL transmission using SL resources, the SL grant indicating a first HARQ process identified by a first HARQ process identifier, and to select a second SL HARQ process identified by a second SL HARQ process identifier for the SL transmission using the SL resources. The processor is configured to cause the second apparatus to transmit SCI containing the second SL HARQ process identifier and to perform the SL transmission using the SL resources.

A method in which a first device performs sidelink communication is provided according to one embodiment of the present disclosure. For example, a method in which a first device operates a first timer and/or a second timer on the basis of sidelink HARQ feedback information may be provided.

A method and apparatus for transmitting and receiving sidelink feedback information. The method includes: receiving, by a terminal equipment, DCI with CRC being scrambled by a SL-RNTI or a SL-CS-RNTI; generating first indication information used for indicating that the first sidelink transmission is successful or that a network device is not needed to schedule retransmission, wherein the first sidelink transmission is not performed on the dynamic grant resource scheduled by the DCI, and a priority of the first indication information is preconfigured; and transmitting the first indication information via a first PUCCH indicated by the DCI.

The embodiments of the present application relate to a method and device for configuring hybrid automatic repeat request (HARQ) feedback between terminal nodes. The method of the embodiments of the present application includes: a base station configuring a HARQ feedback enable rule of a sidelink interface for a terminal; indicating to said terminal the HARQ feedback enable rule of the configured sidelink interface, to enable the terminal to determine, according to the HARQ feedback enable rule of the configured sidelink interface, to enable or not enable HARQ feedback on the sidelink interface.

A method and apparatus for data transmission considering feedback and sidelink resource allocation in a wireless communication system is provided. A wireless device enables a hybrid automatic repeat request (HARQ) feedback for a logical channel, selects to create a sidelink grant corresponding to transmissions of a single media access control (MAC) protocol data unit (PDU) or multiple MAC PDUs, and performs transmission resource reselection check. When there is no sidelink grant for which the HARQ feedback is enabled on a carrier, the wireless device triggers TX resource selection on the carrier.

An operating method of a terminal configured to perform vehicle-to-everything (V2X) communication in a wireless communication system, including signaling a maximum physical sidelink feedback channel (PSFCH) receiving capability to a base station; and receiving a wireless signal transmitted from the base station based on the maximum PSFCH receiving capability, wherein the maximum PSFCH receiving capability is a maximum number of PSFCHs receivable during one time transmission interval (TTI).

According to an embodiment of the present disclosure, provided is a method by which a first apparatus performs sidelink communication. The method comprises the steps of: receiving a grant from a base station by using DCI; on the basis of the grant, determining an initial transmission resource and one or more retransmission resources for sidelink transmission to a second apparatus; transmitting, to the second apparatus, a PSCCH and a PSSCH from the initial transmission resource; receiving, from the second apparatus, an HARQ ACK for the PSCCH or the PSSCH; and transmitting, to the base station, information related to the HARQ ACK, wherein, on the basis of the information related to the HARQ ACK, a reservation of at least one of the one or more retransmission resources indicated by the base station may be released.