Availability indication for uplink location measurement report feedback

Abstract

This disclosure describes systems, methods, and devices related to uplink location measurement report (LMR) feedback. A device may perform availability window negotiation during a negotiation phase of a location determination associated with a first initiating device of one or more initiating devices. The device may determine a status of a first LMR associated with the first initiating device. The device may cause to send a polling request to one more initiating devices during a first availability window. The device may identify a polling response from at least one of the one or more initiating devices. The device may perform one or more sounding measurements with the at least one of the one or more initiating devices during a measurement phase. The device may cause to send a trigger frame to the at least one of the one or more initiating devices.

What is claimed is: 
     
         1 . A responding device, the device comprising processing circuitry coupled to storage, the processing circuitry configured to:
 perform availability window negotiation during a negotiation phase of a location determination associated with a first initiating device of one or more initiating devices;   determine a status of a first location measurement report (LMR) associated with the first initiating device;   cause to send a polling request to one more initiating devices during a first availability window;   identify a polling response from at least one of the one or more initiating devices;   perform one or more sounding measurements with the at least one of the one or more initiating devices during a measurement phase; and   cause to send a trigger frame to the at least one of the one or more initiating devices.   
     
     
         2 . The responding device of  claim 1 , wherein the status of the first LMR is a delayed LMR or an immediate LMR. 
     
     
         3 . The responding device of  claim 1 , wherein a delayed LMR is an LMR sent in a next availability window, and wherein an immediate LMR is an LMR sent in a same availability window of the measurement availability window. 
     
     
         4 . The responding device of  claim 1 , wherein to cause to send the trigger frame to the at least one of the one or more imitating devices further comprises determining that at least one of the one or more initiating devices are ready to send a corresponding LMR. 
     
     
         5 . The responding device of  claim 1 , wherein to perform the availability window negotiation comprises the processing circuitry to be further configured to exchange fine timing measurement (FTM) frames, the FTM frames comprising an initiating FTM request. 
     
     
         6 . The responding device of  claim 5 , wherein the initiating FTM request comprises timing information associated with when the first LMR associated with the first initiating LMR. 
     
     
         7 . The responding device of  claim 6 , wherein the timing information includes a time offset of when the first LMR will be sent and a time duration of how long the first LMR will be valid. 
     
     
         8 . The responding device of  claim 6 , wherein the initiating FTM request comprises a ranging parameters field, wherein the ranging parameter field indicates a willingness to report the first LMR. 
     
     
         9 . The responding device of  claim 8 , wherein the ranging parameters field is set to 1 to indicate the first initiating device is willing to report the first LMR to the responding device. 
     
     
         10 . The responding device of  claim 8 , wherein the ranging parameters field is set to 0 to indicate the first initiating device is not ready to report the first LMR to the responding device. 
     
     
         11 . The responding device of  claim 1 , further comprising a transceiver configured to transmit and receive wireless signals. 
     
     
         12 . The responding device of  claim 11 , further comprising an antenna coupled to the transceiver. 
     
     
         13 . A non-transitory computer-readable medium storing computer-executable instructions which when executed by one or more processors result in performing operations comprising:
 performing availability window negotiation with a responding device, wherein the availability window negotiation is associated with a location determination measurements;   identifying a first trigger frame from a responding device, wherein the first trigger frame solicits a poll response for location measurements;   causing to send a poll response to the responding device, wherein the poll response indicates a willingness to participate in the location measurements;   performing one or more sounding measurements with the responding device during a measurement phase; and   identifying a second trigger frame from the responding device.   
     
     
         14 . The non-transitory computer-readable medium of  claim 13 , wherein the second trigger frame allocates resources for one or more devices to send their corresponding uplink location measurement report (LMR) to the responding device. 
     
     
         15 . The non-transitory computer-readable medium of  claim 13 , wherein identifying the second trigger frame is based on a negotiation phase of the availability window negotiation. 
     
     
         16 . The non-transitory computer-readable medium of  claim 13 , wherein the operations further comprise causing to send an initiating fine timing measurement request (iFTMR) frame during a negotiation phase, wherein the iFTMR comprises a ranging parameters field that indicates an immediate location measurement report (LMR) or a delayed LMR. 
     
     
         17 . The non-transitory computer-readable medium of  claim 13 , wherein the operations further comprise causing to send an initiating fine timing measurement request (iFTMR) frame during a negotiation phase, wherein the iFTMR comprises a feedback bit that indicates a willingness to report a location measurement report (LMR). 
     
     
         18 . A method comprising:
 performing, by one or more processors of a responding device, availability window negotiation during a negotiation phase of a location determination associated with a first initiating device of one or more initiating devices;   determine a status of a first location measurement report (LMR) associated with the initiating device;   cause to send a polling request to one more initiating devices during a first availability window;   identify a polling response from at least one of the one or more initiating devices;   perform one or more sounding measurements with the at least one of the one or more initiating devices during a measurement phase; and   cause to send a trigger frame to the at least one of the one or more initiating devices.   
     
     
         19 . The method of  claim 18 , wherein the status of the first LMR is a delayed LMR or an immediate LMR. 
     
     
         20 . The method of  claim 18 , wherein a delayed LMR is an LMR sent in a next availability window, and wherein an immediate LMR is an LMR sent in a same availability window of the measurement availability window.