A terminal apparatus transmits a PUCCH in a certain slot, and receives multiple DCI formats on a set of PDCCH monitoring occasions corresponding to the certain slot. In a case that multiple PUCCHs exist in the certain slot and that the multiple PUCCHs include a first PUCCH including a first type HARQ-ACK codebook and a second PUCCH including a second type HARQ-ACK codebook, the second PUCCH is not transmitted.

The technology of this application provides a control information transmission method, so that sizes of different downlink control information (DCI) can be aligned, thereby reducing types of DCI sizes and reducing power consumption when a terminal detects DCI. The method includes a terminal device detecting first DCI in a first search space, where the first DCI is used to indicate an active bandwidth part (BWP) of the terminal device, a size of the first DCI and a size of second DCI are aligned, the second DCI can be sent by a network device to the terminal device in a first common search space, and the second DCI is used to schedule a system message, a paging message, or a random access response (RAR).

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive signaling that indicates whether feedback for each of one or more downlink messages scheduled to be received at the UE is to be single-bit feedback or multi-bit feedback. The UE may monitor for the one or more downlink messages. The UE may generate, based at least in part on the monitoring for the one or more downlink messages, a codebook for reporting the feedback pertaining to each downlink message, the codebook supporting inclusion of both single-bit feedback and multi-bit feedback based at least in part on the signaling. The UE may transmit a feedback message that is based at least in part on the codebook.

A method may include determining a slot for hybrid automatic repeat request feedback based on one or more downlink assignments. The method may also include determining one or more sets of communication channels with associated start and length indicators for which hybrid automatic repeat requests will be bundled based on a resource assignment table and a hybrid automatic repeat request bundling configuration parameter. The method may further include determining one or more sets of candidate communication channel slots based on K1 values and the resource assignment table. Further, the method may include selecting a start and length indicator for each communication channel set from a corresponding resource assignment row. The method may also include removing unselected start and length indicators and candidate communication channel slots without a selected start and length indicator.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a physical downlink control channel (PDCCH) scheduling a physical downlink shared channel (PDSCH). The UE may transmit a physical uplink control channel (PUCCH) based on a PUCCH repetition factor, wherein the PUCCH repetition factor is indicated by a location of a control channel element (CCE) of the PDCCH, a PUCCH resource indicator (PRI) bitfield of the PDCCH, and at least one of: one or more parameters of the PDCCH, or one or more parameters of the PDSCH. Numerous other aspects are provided.

Methods, systems, and devices for wireless communication are described. Some wireless communications systems may support codebook structures for multiplexing single-bit feedback and multi-bit feedback in a same uplink feedback message. A user equipment (UE) may receive a first downlink message associated with single-bit feedback and a second downlink message associated with multi-bit feedback. The first downlink message and the second downlink message may have a common uplink transmission opportunity for transmitting feedback pertaining to the downlink messages. The UE may generate a codebook that supports inclusion of both the single-bit feedback and the multi-bit feedback for the first and second downlink messages. The UE may transmit the feedback message during the common uplink transmission opportunity based on the codebook.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a request to transmit one or more canceled hybrid automatic repeat request (HARQ) codebooks, the one or more canceled HARQ codebooks having been scheduled for transmission within a time window preceding receiving the request. The UE may transmit the one or more canceled HARQ codebooks via one or more resources associated with the request. Numerous other aspects are described.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a semi-persistent scheduling (SPS) downlink communication. The UE may detect a collision between a configured uplink resource associated with a hybrid automatic repeat request acknowledgement (HARQ-ACK) for the SPS downlink communication and a candidate synchronization signal block (SSB) position. The UE may transmit the HARQ-ACK for the SPS downlink communication in the configured uplink resource or in a deferred uplink resource in connection with detecting the collision. Numerous other aspects are described.

A communication device for handling a hybrid automatic repeat request (HARQ) transmission, comprises at least one storage device; and at least one processing circuit, coupled to the at least one storage device, wherein the at least one storage device stores instructions, and the at least one processing circuit is configured to execute the instructions of: receiving a configuration from a network, wherein the configuration comprises a time domain resource allocation (TDRA) table and a set of a plurality of timing values; and receiving a downlink (DL) control information (DCI) from the network, wherein the DCI indicates a row of the TDRA table for at least one physical DL shared channel (PDSCH) reception and indicates a timing value of the set of the plurality of timing values for the HARQ transmission corresponding to the at least one PDSCH reception.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a random access response associated with a random access channel (RACH) procedure. The UE may transmit, based at least in part on receiving the random access response, data indicating a request for coverage enhancement associated with an acknowledgment associated with the RACH procedure. Numerous other aspects are described.