A feedback information sending method and an apparatus are provided. The method includes: A network device sends, to a terminal device, M pieces of DCI for scheduling N transmissions of first data, values in DAI fields comprised in all of the M pieces of DCI are the same; and the terminal device sends feedback information of the first data to the network device, wherein the feedback information is comprised in an HARQ-ACK codebook, and a location of the feedback information in the HARQ-ACK codebook is determined based on a DAI field in first DCI of the M pieces of DCI.

Feedback information sending methods and apparatuses are provided in this disclosure. One method includes receiving, from a network device, M pieces of downlink control information (DCI) for scheduling transmissions of N pieces of data, the M pieces of DCI comprise first DCI and second DCI, determining, based on resource indication information in third DCI, a time-frequency resource for sending a hybrid automatic repeat request-acknowledgement (HARQ-ACK) codebook that comprises feedback information for N pieces of data corresponding to N pieces of DCI of the M pieces of DCI, and sending the HARQ-ACK codebook to the network device on the time-frequency resource.

In an embodiment a sidelink communication method includes when a hybrid automatic repeat request (HARQ) feedback attribute of at least one sidelink logical channel of a first terminal device is enabled, obtaining, by the first terminal device from a network side device, one or more resource pools for the first terminal device, wherein a physical sidelink feedback channel (PSFCH) resource is configured in at least one of the resource pools.

A sidelink transmission method and apparatus. The method includes: receiving sidelink control information by a terminal equipment at a physical layer (PHY), the sidelink control information being used to trigger report of sidelink channel state information; generating sidelink channel state information by the terminal equipment at the physical layer; and transmitting the sidelink control information and the sidelink channel state information by the terminal equipment from the physical layer to a media access control (MAC) layer. Hence, a valid CSI measurement result may be transmitted, and waste of sidelink resources may be avoided at the same time.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine that a negative acknowledgment (NACK) feedback message for a broadcast/multicast communication is to be transmitted. The UE may transmit the NACK feedback message, via a radio access network (RAN), to a broadcast/multicast control plane function device of a core network based at least in part on determining that the NACK feedback message is to be transmitted. The UE may receive a retransmission of the broadcast/multicast communication based at least in part on transmitting the NACK feedback message. Numerous other aspects are provided.

A method of transmitting an acknowledgement (ACK) signal in a wireless communication system is provided. The method includes: establishing a first wireless connection between a first and second electronic devices; establishing a second wireless connection between the first electronic device and a source device; transmitting, by the first electronic device, communication parameter information to the second electronic device; transmitting, by the first electronic device, a data request to the source device; receiving, by the first electronic device, a data packet from the source device in response to the data request; receiving, by the second electronic device, the data packet from the source device based on the communication parameter information; transmitting, by the first electronic device, a first ACK signal to the second electronic device; and transmitting, by the second electronic device, a second ACK signal to the source device based on the first ACK signal.

Certain aspects of the present disclosure provide techniques for channel state information (CSI) reporting based on user equipment (UE) parameters. A method that may be performed by a UE includes receiving a configuration to report aperiodic CSI. The method generally includes determining, based on one or more parameters, to send a first report including hybrid automatic repeat request (HARQ) feedback and not CSI feedback or a second report including HARQ feedback and CSI feedback. The method generally includes sending the first report or the second report based on the determination.

A wireless device receives, from a base station, one or more radio resource control (RRC) messages that includes one or more configuration parameters for a cell. The one or more configuration parameters include a unified transmission configuration indicator (TCI) state type parameter that indicates a unified TCI state type among a separate unified TCI state type and a joint unified TCI state type. The wireless device may then communicate, with the base station and via the cell, based on the indicated unified TCI state type.

Apparatuses, methods, and systems are disclosed for supporting a mixture of BR and HFBT. One apparatus (600) includes a processor (605) that provides a physical (“PHY”) layer (255) and a Medium Access Control (“MAC”) layer (260) and a transceiver (625) that communicates on a sidelink channel. The processor (605) determines (805) a minimum time duration between a first resource for HARQ transmission of the transport block (“TB”) and a second resource for HARQ transmission of the TB. Here, the minimum time duration comprises a sum of: a first time to receive HARQ feedback, a second time to determine whether to perform retransmissions of the TB, and a third time to retransmit the TB. The processor (605) selects (810) a retransmission mode based on the minimum time duration and selects (815) sidelink resources for retransmission of the TB based on the selected retransmission mode.

A communication apparatus includes a receiver and a transmitter. The receiver, in operation, receives from a neighboring cell a reference signal mapped to at least one first resource element. No signal is received from a serving cell on the at least one first resource element. The transmitter, in operation, transmits to a base station measurement information obtained based on the reference signal.