A system and method for transmitting and relaying data packets within an ARQ 3G HDL framework includes populating unused packet positions with unacknowledged packets during retransmission. The unused packet positions are populated according to lowest unacknowledged sequence numbers. Unused packet positions may be populated with multiple copies of the lowest unacknowledged sequence number or some set of the lowest unacknowledged sequence numbers. A set of lowest sequence unacknowledged sequence numbers may be weighted toward the lowest unacknowledged sequence number to increase the probability of the lowest unacknowledged sequence number being received so that the send window can be slid forward.

Provided are a method for a terminal resending data in a wireless communication system, and a communication device using same. The method comprises: receiving downlink control information (DCI) from a network; and resending data on the basis of the DCI, wherein the DCI includes an acknowledgement/not-acknowledgement (ACK/NACK) field.

Apparatuses, systems, and methods for performing contention window size updates for code block group based retransmission configurations in a wireless communication system. A code block group based wireless communication may be performed in unlicensed spectrum. A reference burst of the code block group based wireless communication may be identified. One or more of a number of acknowledgements or a number of negative acknowledgements associated with the reference burst may be identified. A contention window size adjustment may be determined based at least in part on one or more of the number of acknowledgements or the number of negative acknowledgements associated with the reference burst.

This disclosure provides systems, methods, and devices for wireless communication that support blind reTx for sidelink communication. In a first aspect, a method of wireless communication includes determining a first threshold based on a first number of re-transmissions per packet associated with a first time window, a second threshold based on a first reference signal receive power (RSRP) threshold for resource selection/exclusion associated with the first time window, or a combination thereof. The method further includes initiating a blind transmission (Tx) based on a determination that a second number of re-transmissions per packet associated with a second time window is greater than or equal to the first threshold, a determination that a second RSRP threshold associated with the second time window is less than or equal to the second threshold, or a combination thereof. Other aspects and features are also claimed and described.

Examples described herein relate to a network interface device that includes circuitry to track one or more gaps in received packet sequence numbers using data and circuitry to indicate to a sender of packets non-delivered packets to identify a range of delivered packets. In some examples, the data identifies delivered packets and undelivered packets for one or more connections. In some examples, to indicate to a sender of packets non-delivered packets to identify a range of delivered packets, the circuitry is to provide negative acknowledgement sequence range indicating a start and end of non-delivered packets.

Systems and methods presented herein provide for an eNodeB operating in an RF band comprising a conflicting wireless technology. One exemplary eNodeB assigns an ID to a UE, processes a scheduling request for UL data from the UE, processes another scheduling request for second UL data from the UE, determines priorities of the first and second UL data based on priority indicators in the scheduling requests, and grants time and frequency for the UE to transmit the first and second UL data. The eNodeB also waits until the UE performs an LBT operation. The LBT determines whether the granted time and frequency are occupied by another wireless system comprising a different wireless technology. The eNodeB also determines that the first UL data is stale, and transmits the ID to the UE to reserve the granted time and frequency for the second UL data when unoccupied by the other wireless system.

A backhaul radio is disclosed that operates in multipath propagation environments such as obstructed LOS conditions with uncoordinated interference sources in the same operating band. Such a backhaul radio may use an advanced ARQ protocol, which uses an ACK_MAP, constructed by a combination of implicit and explicit signaling, and performs a combination of proactive and reactive retransmissions.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a receiving (Rx) user equipment (UE) may receive, from a transmitting (Tx) UE, sidelink control information (SCI). The Rx UE may determine an Rx-side block error rate (BLER) based at least in part on the SCI. The Rx UE may perform a beam failure recovery based at least in part on the Rx-side BLER satisfying a threshold. Numerous other aspects are described.

Beam failure recovery (BFR) procedures are described for wireless communications. At least one transmission for BFR may overlap with a scheduled transmission. A wireless device may prioritize the at least one transmission for BFR, for example, over the scheduled transmission and may transmit the at least one transmission for BFR.

Embodiments of the present disclosure provide a method and system for adjusting a physical uplink control channel (PUCCH) format in a wireless communication network. In particular, the method is implemented for adjusting a PUCCH format in an uplink transmission from a terminal device to a network device in a wireless communication network. The method comprises: using a first PUCCH format having a first duration for a service between the terminal device and the network device; and using (804) a second PUCCH format having a second and different duration for the service of the terminal device responsive to a determination that the first PUCCH format is in need of change based on one or more events.