Autonomous sidelink resource selection

Abstract

Apparatuses, methods, and systems are disclosed for autonomous sidelink resource selection. One method includes receiving, at a sidelink communication device and from a location management function, a request including a plurality of parameters for performing autonomous resource selection for transmission of a sidelink positioning reference signal. The method includes performing the autonomous resource selection for determining a sidelink resource for the transmission of the sidelink positioning reference signal. The method includes determining the sidelink resource based on the autonomous resource selection and based on a priority, a packet delay budget, a reference signal received power, a positioning reference signal offset, a positioning reference signal comb pattern, or a combination thereof.

1 . An apparatus comprising a sidelink communication device, the apparatus further comprising:
 a receiver that receives, from a location management function, a request comprising a plurality of parameters for performing autonomous resource selection for transmission of a sidelink positioning reference signal; and   a processor that:
 performs the autonomous resource selection for determining a sidelink resource for the transmission of the sidelink positioning reference signal; and 
 determines the sidelink resource based on the autonomous resource selection and based on a priority, a packet delay budget, a reference signal received power, a positioning reference signal offset, a positioning reference signal comb pattern, or a combination thereof. 
   
     
     
         2 . The apparatus of  claim 1 , wherein the plurality of parameters comprise a sidelink positioning quality indicator, a priority value and positioning delay budget to be used for resource selection of the sidelink positioning reference signal, a latency range for sidelink report transmission, reception, or a combination thereof between sidelink user equipments, a resource pool configuration, a reference signal type for sensing, a source identifier, a destination identifier, a cast type, a positioning technique, a report configuration for reporting a positioning value, or some combination thereof. 
     
     
         3 . The apparatus of  claim 1 , wherein the processor configures a set of positioning reference signal offsets, positioning reference signal comb patterns, or a combination thereof per resource pool, per sidelink bandwidth part, or per sidelink carrier, and the autonomous resource selection for the transmission of the sidelink positioning reference signal is performed using available positioning reference signal offsets, an available comb pattern, or a combination thereof. 
     
     
         4 . The apparatus of  claim 1 , wherein the receiver receives mapping information comprising an association between a positioning reference signal resource, a positioning reference signal bandwidth, and a sidelink quality indicator value, and the sidelink quality indicator value is associated with a sidelink positioning accuracy, a latency range, or a combination thereof. 
     
     
         5 . The apparatus of  claim 1 , wherein the processor performs at least one resource reselection based on at least one trigger received from a medium access control, and performing the at least one resource reselection comprises requesting a candidate resource for positioning reference signal transmission in a resource pool, a carrier, a bandwidth part, or some combination thereof based on a sidelink positioning request received from the location management function. 
     
     
         6 . The apparatus of  claim 1 , further comprising a transmitter, wherein the processor performing the autonomous resource selection for the transmission of the sidelink positioning reference signal comprises the processor performing the autonomous resource selection using sensing, random resource selection, or a combination thereof, and the transmitter reports a candidate positioning reference signal offset, a comb pattern, a candidate resource set, or some combination thereof for the transmission of the sidelink positioning reference signal to a higher layer. 
     
     
         7 . The apparatus of  claim 1 , wherein the processor maximizes a selection of contiguous resources from multiple candidate resource sets received from a plurality of resource pools for the transmission of the sidelink positioning reference signal at the same time within a time period. 
     
     
         8 . The apparatus of  claim 1 , wherein the processor reserves at least one resource and at least one positioning reference signal offset or a comb pattern for the transmission of the sidelink positioning reference signal within a packet delay budget. 
     
     
         9 . The apparatus of  claim 1 , wherein the processor indicates a cast type indicator in sidelink control information, and the cast type indicator indicates a one-to-one, one-to-many, or many-to-one sidelink positioning reference signal transmission. 
     
     
         10 . An apparatus comprising a first sidelink communication device, the apparatus further comprising:
 a receiver that receives information from a location management function, wherein the information comprises a destination identifier and a plurality of parameters to facilitate sidelink positioning;   a processor that performs a sidelink connection establishment procedure comprising a discovery procedure for unicast sidelink positioning based on the information from the location management function; and   a transmitter that transmits the plurality of parameters using sidelink radio resource control signaling to a second sidelink communication device based on the destination identifier to facilitate sidelink positioning.   
     
     
         11 . The apparatus of  claim 10 , wherein the transmitter transmits an absolute position of the first sidelink communication device using sidelink radio resource control signaling to the second sidelink communication device to facilitate a positioning method at the second sidelink communication device. 
     
     
         12 . The apparatus of  claim 10 , wherein the processor requests an absolute position of the second sidelink communication device using sidelink control information or sidelink radio resource control signaling to facilitate a positioning method at the first sidelink communication device. 
     
     
         13 . The apparatus of  claim 10 , wherein the processor exchanges absolute positioning information with the second sidelink communication device using sidelink radio resource control signaling and a sidelink positioning reference signal transmission, and the transmitter reports sidelink positioning to a lower layer using a sidelink positioning reference signal, and exchanging the absolute positioning information comprises the processor using sidelink radio resource control signaling performed with a first periodicity that is less than a second periodicity of a sidelink positioning reference signal transmission and reporting of a sidelink positioning value based on the sidelink positioning reference signal transmission. 
     
     
         14 . An apparatus comprising a location management function, the apparatus further comprising:
 a transmitter that transmits a plurality of parameters for performing autonomous resource selection for transmission of a sidelink positioning reference signal.   
     
     
         15 . The apparatus of  claim 14 , wherein the plurality of parameters comprise a sidelink positioning quality indicator, a priority value and positioning delay budget to be used for resource selection of the sidelink positioning reference signal, a latency range for sidelink report transmission, reception, or a combination thereof between sidelink user equipments, a resource pool configuration, a reference signal type for sensing, a source identifier, a destination identifier, a cast type, a positioning technique, a report configuration for reporting a positioning value, or some combination thereof.