Methods and apparatuses are disclosed for Hybrid Automatic Repeat reQuest Acknowledgement, HARQ-ACK, feedback. In one embodiment, a method implemented in a wireless device, WD, includes receiving, from a network node, a first Downlink Control Information, DCI, scheduling a physical downlink shared channel, PDSCH, and receiving, from the network node, a second DCI, the second DCI comprising a HARQ-ACK feedback request trigger triggering a HARQ-ACK feedback for the PDSCH scheduled by the first DCI. In another embodiment, a method implemented in a network node includes transmitting a first Downlink Control Information, DCI, scheduling the PDSCH, and transmitting a second DCI, the second DCI having a HARQ-ACK feedback request trigger triggering a HARQ-ACK feedback for the PDSCH scheduled by the first DCI.

Wireless communications systems and methods related to communicating uplink control information (UCI) in a network operating over multiple aggregated unlicensed carriers are provided. A first wireless communication device communicates, with a second wireless communication device, a downlink communication signal. The first wireless communication device communicates, with the second wireless communication device, an unscheduled uplink communication signal including an uplink report associated with the downlink communication signal, the unscheduled uplink communication signal communicated based on a listen-before-talk (LBT) procedure. The uplink report includes at least one of an acknowledgement (ACK) for data in the downlink communication signal, a negative-acknowledgement (NACK) for the data in the downlink communication signal, or channel information based at least on the downlink communication signal.

A user equipment (UE) may receive a first group downlink control information transmission associated with a UE group, where the first group downlink control information transmission may reference a second group downlink control information transmission (e.g., according to a pre-notification indication). The UE may determine a feedback condition for the second group downlink control information transmission and monitor for the second group downlink control information transmission. Alternatively, the UE may receive a second group downlink control information transmission referencing the first group downlink control information transmission (e.g., according to a post-confirmation indication), and the UE may determine a feedback condition for the first group downlink control information transmission. Based on the feedback condition, the UE may transmit feedback information, for example, indicating that the UE did not correctly receive the indicated group downlink control information transmission.

A method and apparatus for selecting a destination based on hybrid automatic repeat request (HARQ) feedback in a wireless communication system is provided. A first wireless device selects a destination, from multiple destinations, having a first logical channel with a highest priority among multiple logical channels having data available for transmission. The HARQ feedback is disabled for the first logical channel. The first wireless device selects one or more second logical channels not configured with the HARQ feedback among the multiple logical channels.

A wireless communication device (200) according to the present disclosure includes a control unit (240). In a case where a resource selected for use in packet transmission is preempted by another wireless communication device (200) in sidelink communication, the control unit (240) adjusts a transmission parameter and transmits the packet.

A method and apparatus for transmitting and receiving a block ACK in a wireless LAN system are disclosed. An operation method for a first communication node comprises the steps of: generating a first data frame including first ADDBA information; transmitting the first data frame to a second communication node; and receiving, from the second communication node, a first RA including second ADDBA information generated by the second communication node in response to the first data frame.

A method and device for processing hybrid automatic repeat request-acknowledgement (HARQ-ACK), a communication device and a storage medium are provided. The method includes: transmitting configuration signaling for transmitting HARQ-ACK over a channel on unlicensed spectrum by using a one-shot HARQ-ACK mechanism; and transmitting downlink control information (DCI) for scheduling a physical downlink shared channel (PDSCH) resource. Further, in response to triggering the one-shot HARQ-ACK mechanism to transmit the HARQ-ACK, it is determined that the DCI includes a time domain offset-information field carrying a first value that indicates an offset between a time slot of a physical uplink control channel (PUCCH) resource to carry the HARQ-ACK and a time slot of the PDSCH resource.

This disclosure provides systems, methods, and devices for wireless communication that support an index modulation (IM)-based acknowledgement codebook so use with sidelink feedback. In a first aspect, a first UE receives at least one sidelink transmission from a second UE with a sidelink control information (SCI) message that triggers least one IM-based feedback message codebook. The first UE may determine an IM-based feedback message sequence, determine, based on the feedback sequence, a resource for transmission of the IM-based feedback message, wherein a resource index corresponds to the determined feedback message sequence. The first UE may then transmit the IM-based feedback message codebook on the determined resource to the second UE over the sidelink. Other aspects and features are also claimed and described.

An electronic device that communicates frames is described. During operation, the electronic device may transmit the frames addressed to a recipient electronic device and associated with multiple links between the electronic device and the recipient electronic device. Then, the electronic device may receive block acknowledgments for at least a subset of the frames, where a given block acknowledgment is associated with the recipient electronic device and indicates received frames on a given link in the links. Moreover, the electronic device may control an amount of traffic conveyed on the links based at least in part on the block acknowledgments. Next, the electronic device may store a remainder of the frames based at least in part on the block acknowledgments, where the frames include the subset of the frames and the remainder of the frames. Note that the frames may have a common traffic identifier.

Methods and apparatuses are related to multi-user parallel channel access (MU-PCA). For example, a wireless transmit/receive unit (WTRU) is provided that is one of the plurality of WTRUs operable to simultaneously communicate via a plurality of channels managed by an access point (AP). The WTRU includes a receiver configured to receive, from the AP, over at least one channel of the plurality of channels, a group poll (G-Poll) message that includes a resource allocation that indicates at least one allocated channel of the plurality of channels for the WTRU; and a transmitter configured to transmit an uplink request message, to the AP in response to the G-Poll message, over the at least one allocated channel of the plurality of channels, the uplink request message corresponding to uplink data the WTRU has for transmission to the AP.