Abstract: In a particular implementation, a method of wireless communication includes transmitting, from a first user equipment (UE) to a second UE, a radio resource control (RRC) request that includes a first discontinuous reception (DRX) preference at the first UE. The method also includes receiving, at the first UE from the second UE, a RRC setup message that includes a second DRX preference at the second UE. The method further includes transmitting, from the first UE to the second UE, a RRC setup complete message that includes an indication of a confirmed DRX cycle.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a first sidelink control information (SCI) from a second UE and a second SCI from a third CE, the first SCI may indicate a first set of resources and the second SCI may indicate a second set of resources that at least partially overlap with the first set of resources. The sets of resources may indicate resources reserved by the UEs for sidelink communications. The first UE may measure a first received power associated with the second UE or a second received power associated with the third UE, or both, based on the overlap and may transmit, to the second UE and/or the third UE, an indication of a conflict based on the first received power and/or the second received power satisfying a condition.

Abstract: Various aspects of the present disclosure generally relate to wireless communication and radar detection. In some aspects, a radar device may perform, at an initial listen before talk (LBT) frame boundary associated with an initial LBT frame of a plurality of LBT frames, an initial LBT procedure, wherein the initial LBT frame has a frame length that is larger than a propagation delay associated with a maximum detectable range associated with the radar device; and transmit a radar signal based at least in part on a successful result of the initial LBT procedure or an additional LBT procedure. Numerous other aspects are provided.

Abstract: Methods, systems, and devices for wireless communications are described. To improve sidelink reservation schemes, a first user equipment (UE) may receive, from a second UE, a coordination message indicating a set of resources associated with sidelink communications and a preference of the second UE for one or more subsets of the set of resources. The first UE may transmit the sidelink communications using one or more resources of the set of resources based on the preference of the second UE for the one or more subsets of the set of resources. In some examples, the one or more resources may be selected from candidate resources within a resource selection window of the first UE. Additionally, or alternatively, the candidate resources may be based on the preference of the second UE.

Abstract: Disclosed are techniques for using ranging signals to determine a position of a pedestrian user equipment (P-UE). In an aspect, a UE receives a plurality of ranging signals transmitted by one or more UEs, measures one or more properties of each of the plurality of ranging signals, and calculates an estimate of the position of the P-UE based on the one or more properties of each of the plurality of ranging signals. In an aspect, the P-UE transmits a plurality of ranging signals, receives a first message and a second message from first and second vehicle UEs (V-UEs), the first and second messages including first and second estimated positions of the P-UE and associated first and second confidences, and calculates an estimate of the position of the P-UE based on the first estimated position, the first confidence, the second estimated position, the second confidence, or a combination thereof.

Abstract: Certain aspects of the present disclosure provide techniques for full-duplex sidelink synchronization. A method that may be performed by a user equipment (UE) includes monitoring for a first synchronization block (SSB) at a first frequency location and at a first occasion within a period and transmitting a second SSB at a second frequency location and at the first occasion within the period.

Abstract: Disclosed are techniques for wireless positioning. In an aspect, a road-side unit (RSU) may join a first sidelink (SL) ranging session between a first user equipment (UE) and a second UE. The RSU may perform SL ranging with the first UE to determine first ranging information comprising at least a RTT to the first UE. The RSU may perform SL ranging with the second UE to determine second ranging information comprising at least a RTT to the second UE. The RSU may send the first ranging information and the second ranging information to at least one of the first UE or the second UE, or calculate a range between the first UE and the second UE based on the first ranging information and the second ranging information, and send the range to at least one of the first UE and the second UE.

Abstract: Certain aspects of the present disclosure provide techniques for sub-band full-duplex resource management for sidelink. A method that may be performed by a user equipment first (UE) includes transmitting, to a second UE, information indicating one or more resource assignments for one or more transmissions to the second UE and communicating with the second UE in a full-duplex manner based on the one or more resource assignments.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may select, in a first time slot, a set of resources to use for transmission to another UE; evaluate, in a second time slot, whether one or more resources of the set of resources is available; and transmit, based on the one or more resources of the set of resources being available, information to the other UE in a third time slot and using the set of resources, or reselect, based on the one or more resources of the set of resources being unavailable, another resource for transmission of the information to the other UE. Numerous other aspects are provided.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first wireless communication device may iterate a value of a channel access counter (CAC) to a trigger value based at least in part on configuring the value of the CAC. In some aspects, the first wireless communication device may utilize a channel access mechanism to select a set of time-frequency resources for a transmission of a packet based at least in part on iterating the value of the CAC to the trigger value. In some aspects, the first wireless communication device may transmit the packet to a second wireless communication device via the set of time-frequency resources based at least in part on utilizing the channel access mechanism to select the set of time-frequency resources for the transmission. Numerous other aspects are provided.

Abstract: This disclosure provides systems, devices, apparatus, and methods, including computer programs encoded on storage media, for sidelink resource selection with AD usage awareness. A UE may receive, from one or more ANs, one or more resource usage schedules associated with one or more ADs in communication with the one or more ANs. The UE may combine the one or more resource usage schedules associated with the one or more ADs into a combined resource usage schedule. The usages may be associated with the combined resource usage schedule, which may be indicative of excluded resources for a transmission of the UE. The UE may transmit, based on the combined resource usage schedule, the transmission of the UE on a resource other than the excluded resources.

Abstract: A first UE and at least one second UE are disclosed. The first UE may identify one or more resources that are suitable for a subsequent transmission from at least one second UE. The first UE may transmit to the at least one second UE, an inter-UE coordination message and at least one data transmission. The inter-UE coordination message may be transmitted at a same time as the at least one data transmission. The inter-UE coordination message may include an indication of the one or more resources that are suitable for the subsequent transmission from the at least one second UE. In one configuration, the inter-UE coordination message may be piggybacked with the at least one data transmission. The at least one second UE may transmit the subsequent transmission via the one or more resources, or may reselect the one or more resources based on the inter-UE coordination message.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first vehicle-to-every thing (V2X) device may receive, via a first radio access network (RAN), a scheduling assignment for a second V2X device. The first V2X device may decode the scheduling assignment to determine resource reservation information for the second V2X device on the first RAN. The first V2X device may modify at least one transmission associated with a second RAN based at least in part on the resource reservation information for the second V2X device on the first RAN. In some aspects, the first V2X device may transmit a coordination message for reception by one or more other V2X devices associated with a second RAN. The coordination message may include the resource reservation information for the second V2X device associated with the first RAN. Numerous other aspects are described.

Abstract: Methods, systems, and devices for wireless communications are described. A receiver user equipment (UE) may communicate with a transmitter UE in a sidelink channel to report a congestion index to the transmitter UE and/or additional transmitter UEs, where the transmitter UE(s) may then adjust one or more sidelink operation parameters based on the reported congestion index. In some cases, the transmitter UE may report the congestion index to an upper layer, to other transmitter UEs, to application layers, or a combination thereof. The transmitter UEs 115 and/or application layer may then adjust one or more sidelink transmission operation parameters based on the reported congestion index. For example, the transmitter UEs and/or application layer may adjust threshold values to lessen a number of retransmissions and lessen congestion.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE), such as a vehicle UE may determine, based on one or more communication parameters of the UE, a radar field of view (FOV) for radar communications at the UE relative to a fixed frame of reference for the wireless communications system. The UE may determine a set of radar transmission parameters based on the radar FOV, where each radar transmission parameter of the set of radar transmission parameters is a function of the radar FOV. The UE may transmit a radar message using the set of radar transmission parameters according to the radar FOV relative to the fixed frame of reference.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a network node may receive first information identifying a set of supported configurations for a set of repeaters, the first information including resource information for the set of supported configurations. The network node may receive second information identifying a set of measurements of a network, the set of measurements being associated with use, on the network, of the set of supported configurations. The network node may transmit, to a repeater of the set of repeaters, third information identifying a configuration, of the set of supported configurations, that the repeater is to use for communication in the network, the configuration being based at least in part on the resource information and the set of measurements. Numerous other aspects are described.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit, to a base station, information related to a concurrent reception capability using different receive beams. The UE may receive, from the base station, information indicating one or more slots in which concurrent sidelink and downlink reception is enabled based at least in part on the information related to the concurrent reception capability. The UE may receive, in the one or more slots in which concurrent sidelink and downlink reception is enabled, a downlink transmission from the base station using a first receive beam and a sidelink transmission from a peer UE using a second receive beam. Numerous other aspects are described.

Abstract: Embodiments include systems and methods for sidelink communications. In embodiments, a processor of a wireless device may determine signal strength information and priority information associated with a sidelink communication resource. The processor may determine coordination information based on the determined signal strength information and priority information. The processor may generate a message to include the determined coordination information. The processor may transmit the generated message including the determined coordination information to a second wireless device. In some embodiments, the generated message may be a control message, such as a medium access control control-element (MAC-CE) or a sidelink control information message.

Abstract: Aspects presented herein may enable a UE to transmit or broadcast inter-UE coordination information to one or more UEs based on a set of dedicated-resources or a set of non-dedicated resources. In one aspect, a first UE configures one or more resources in a set of dedicated resources or in a set of non-dedicated resources for a transmission of an inter-UE coordination message, the inter-UE coordination message being associated with at least one of a first stage SCI format or a second stage SCI format. The first UE transmits the inter-UE coordination message via the one or more resources in the set of dedicated resources or in the set of non-dedicated resources.

Abstract: The apparatus may be a first device at a first UE. The first device may be the first UE itself. The first UE may be configured to receive, from a second UE, a first reservation of an SL resource for a first SL transmission. The first UE may further be configured to receive, from a third UE, a second reservation of the SL resource for a second SL transmission within a threshold amount of time following the receipt of the first reservation. The first UE may also be configured to transmit a collision indication based on a collision parameter, the collision parameter being based on reception of the first reservation and the second reservation within the threshold amount of time.