Techniques for wireless communications are described. A user equipment (UE) may receive downlink control information (DCI) scheduling sidelink transmissions in one or more sets of multiple transmission time intervals (TTIs) over a shared spectrum. The UE may perform a listen-before-talk (LBT) for one or more of the TTIs in the one or more sets of multiple TTIs, and the UE may transmit, to a base station, an indication of results of the LBT performed for the one or more TTIs. Because the UE may provide the results of the LBT to the base station, the base station may be able to schedule sidelink transmissions from the UE based on the results of the LBT. As such, the UE may experience increased throughput in sidelink communications since the scheduling at the base station may be improved.

A data transmission apparatus, applicable to a UE, the apparatus includes a receiver configured to receive configuration information about data radio bearers (DRBs), the configuration information indicating TTI length to which each DRBs for the UE corresponds, the DRBs being configured by radio resource control (RRC), and receive one or more uplink grant, each of the uplink grants of the one or more uplink grants corresponding to a TTI length different from another TTI length of another uplink grant, a transmitted configured to transmit data using an uplink shared channel corresponding to each TTI length according to an uplink grant in the one or more uplink grants.

According to certain embodiments, a method in a wireless device (110) includes transmitting a protocol data unit (PDU) or segment of a PDU on a first link and transmitting the PDU or the segment of the PDU on a second link. One or more retransmissions of the PDU or the segment of the PDU are scheduled on the second link. A positive acknowledgment is received from a receiver. The positive acknowledgement indicates a successful receipt of the PDU or the segment of the PDU on the first link. In response to receiving the positive acknowledgement, the one or more retransmissions of the PDU or the segment of the PDU on the second link are cancelled.

The present disclosure provides a method and a device in a communication node for wireless communications. The communication node first receives first information, the first information being used to determine a target time-frequency resource pool; and then monitors a first signaling; after that, when the first signaling is detected, the communication node receives a first radio signal; a first code block is used to generated the first radio signal; time-frequency resources occupied by the first signaling comprise a first time-frequency resource, while time-frequency resources occupied by the first radio signal comprise a second time-frequency resource; whether the first radio signal can be excluded from being used for combined decoding for the first code block is dependent on whether the first time-frequency resource belongs to the target time-frequency resource pool. The present disclosure manages to improve the flexibility of buffer configurations.

DCI can include scheduling information for a physical channel carrying a TB and information of a plurality of available symbols within the plurality of allocated symbols. The scheduling information can include information of a plurality of allocated symbols for the physical channel. The physical channel can include a plurality of repetitions of the TB and can span at least one slot. Each of the plurality of repetitions can be within a slot of the at least one slot. At least one repetition of the plurality of the repetitions can have a different duration than another repetition. A repetition duration of each of the plurality of repetitions can be based on the plurality of available symbols for the physical channel.

In an example, a User Equipment (UE) operates with shared spectrum channel access on a carrier and/or a cell. The UE receives a configuration for configuring configured grants for uplink transmission in a bandwidth part (BWP). The configured grants include a first configured grant and a second configured grant. The UE configures a first minimum Downlink Feedback Indication (DFI) time delay for the first configured grant according to the configuration. The first minimum DFI time delay is for validation of Hybrid Automatic Repeat Request (HARQ) information in response to one or more first uplink transmissions. The UE configures a second minimum DFI time delay for the second configured grant according to the configuration. The second minimum DFI time delay is for validation of HARQ information in response to one or more second uplink transmissions. The UE does not expect the second minimum DFI time delay to have a different value than the first minimum DFI time delay.

A feedback information transmission method, a feedback information transmission device, a UE, a base station and a computer-readable storage medium are provided. The feedback information transmission method includes: receiving configuration information from a base station, and determining the quantity of beam groups based on the configuration information; determining the quantity of bits of an HARQ-ACK based on the quantity of the beam groups; and generating an HARQ-ACK sequence corresponding to the quantity of the bits and transmitting the HARQ-ACK sequence to the base station.

A user equipment (UE) is described. The UE includes circuitry configured to determine that a physical uplink control channel (PUCCH) with low priority (LP) overlaps with a high priority (HP) PUCCH carrying a HP hybrid automatic repeat request-acknowledgement (HARQ-ACK) and a HP PUCCH with a positive HP scheduling request (SR). The HP PUCCH with HP HARQ-ACK does not overlap with the HP PUCCH with the positive HP SR. The circuitry is further configured to multiplex a LP HARQ-ACK only with the HP HARQ-ACK.

A user equipment (UE) is described. The UE includes circuitry configured to determine that a physical uplink control channel (PUCCH) with low priority (LP) carrying a LP hybrid automatic repeat request-acknowledgement (HARQ-ACK) overlaps with more than one high priority (HP) PUCCHs carrying HP HARQ-ACKs. The circuitry is also configured to, when only radio resource control (RRC) configuration is used for enabling and disabling uplink control information (UCI) with different priorities, allow the LP HARQ-ACK to multiplex with the HP HARQ-ACK of the first overlapping HP PUCCH only.

A UE may receive, in a slot n, DCI for triggering retransmission of a first HARQ-ACK codebook scheduled for transmission in a slot m, determine a slot n+k for retransmission of the first HARQ-ACK codebook based on the DCI, determine a second HARQ-ACK codebook, including the first HARQ-ACK codebook, to be transmitted in the slot n+k, and, based on transmission of the second HARQ-ACK codebook overlapping in time with transmission of another UCI in the slot n+k, drop transmission of the other UCI and perform transmission of the second HARQ-ACK codebook in the slot n+k.