Methods, systems, and devices for wireless communications are described in which a user equipment (UE) may reserve one or more time frequency resources in an unlicensed frequency spectrum band for one or more sidelink transmissions. The UE may reserve the time frequency resources through a sidelink message transmitted in a first slot of a shared channel occupancy (CO). The UE may monitor a subset of slots before the reserved time frequency resources for sidelink transmissions from other UEs sharing the CO. The monitoring of the subset of slots may include decoding control messages or control information in each of the subset of slots, a reference signal received power (RSRP) measurement of sidelink transmissions in the subset of slots, channel sensing with energy detection in a sensing window, or a combination thereof. The UE may communicate in the reserved slot based on the monitoring.

Methods, systems, and devices for wireless communications are described. A transmitting device and a receiving device may communicate sidelink messages of a second radio access technology (RAT) using a sidelink resource pool signaled using a first RAT. For example, the receiving UE may receive a sidelink control channel associated with the first RAT (e.g., Long Term Evolution (LTE)), may determine a set of time and frequency resources indicated by the sidelink control channel, and then may monitor the set of time and frequency resources to receive a sidelink message associated with the second RAT (e.g., New Radio (NR)). In some implementations, the set of time and frequency resource may be indicated that they may be used for the second RAT via a field in the sidelink control channel or via an additional sidelink message associated with the second RAT transmitted with the sidelink control channel.

Methods, systems, and devices for wireless communications are described. A transmitting device and a receiving device may communicate sidelink messages of a second radio access technology (RAT) using a sidelink resource pool signaled using a first RAT. For example, the receiving UE may receive a sidelink control channel associated with the first RAT (e.g., Long Term Evolution (LTE)), may determine a set of time and frequency resources indicated by the sidelink control channel, and then may monitor the set of time and frequency resources to receive a sidelink message associated with the second RAT (e.g., New Radio (NR)). In some implementations, the set of time and frequency resource may be indicated that they may be used for the second RAT via a field in the sidelink control channel or via an additional sidelink message associated with the second RAT transmitted with the sidelink control channel.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first user equipment (UE) may transmit, to a second UE, a grant-only indicator to indicate that a second stage sidelink control information (SCI-2) is decoupled from physical sidelink shared channel (PSSCH) data in a slot, and that the SCI-2 indicates an SCI-2-only grant. The first UE may transmit, to the second UE in the slot, the SCI-2-only grant multiplexed with data-only traffic in a first PSSCH transmission based at least in part on the grant-only indicator, wherein the SCI-2-only grant indicates a resource allocation for a subsequent slot. Numerous other aspects are described.

There is provided an apparatus, said apparatus comprising means for providing first control information using a first control channel and at least second control information using a second control channel, wherein the first control information comprises at least an indication of resource reservation for an associated data channel and the second control information comprises at least transmission format information for the associated data channel, wherein the associated data channel comprises periodic or aperiodic data traffic.

Apparatuses, methods, and systems are disclosed for requesting a sidelink positioning reference signal resource. One method includes transmitting a request for at least one resource for a sidelink positioning reference signal. The method includes receiving a response to the request for the at least one resource for the sidelink positioning reference signal. The method includes transmitting a sidelink positioning reference signal in the at least one resource. The method includes transmitting a report containing estimated positioning information.

Apparatuses, methods, and systems are disclosed for requesting a sidelink positioning reference signal resource. One method includes transmitting a request for at least one resource for a sidelink positioning reference signal. The method includes receiving a response to the request for the at least one resource for the sidelink positioning reference signal. The method includes transmitting a sidelink positioning reference signal in the at least one resource. The method includes transmitting a report containing estimated positioning information.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first user equipment (UE) may determine a communication collision between a first reservation, by a second UE, of a sidelink resource and a second reservation of the sidelink resource based at least in part on a first set of estimated reference signal received quality (RSRQ) values associated with the first reservation and a second set of estimated RSRQ values associated with the second reservation, wherein the first set of estimated RSRQ values corresponds to a plurality of transmitter-receiver points (TRPs) of the first UE, and wherein the second set of estimated RSRQ values corresponds to the plurality of TRPs. The UE may perform an action based at least in part on identifying the communication collision. Numerous other aspects are provided.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first user equipment (UE) may determine a communication collision between a first reservation, by a second UE, of a sidelink resource and a second reservation of the sidelink resource based at least in part on a first set of estimated reference signal received quality (RSRQ) values associated with the first reservation and a second set of estimated RSRQ values associated with the second reservation, wherein the first set of estimated RSRQ values corresponds to a plurality of transmitter-receiver points (TRPs) of the first UE, and wherein the second set of estimated RSRQ values corresponds to the plurality of TRPs. The UE may perform an action based at least in part on identifying the communication collision. Numerous other aspects are provided.

A resource reselection method and apparatus, and a device and a storage medium. The method includes: transmitting to a second terminal a priority of to-be-transmitted data; receiving a resource set transmitted by the second terminal, the resource set being used to indicate a resource exclusion result obtained by a resource exclusion procedure determined by the second terminal according to the priority of the to-be-transmitted data; and when performing re-evaluation on a first selected resource, determining whether to perform reselection for the first selected resource according to the resource set. The first selected resource is a resource that has been selected by the first terminal and not indicated to another terminal via first sidelink control information.