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US 9,958,533 B2Granted
Method and system for locating wireless devices within a local region
AssigneeDRNC Holdings, Inc.
InventorTajinder Manku
Life of this patent
Estimating the term…
Abstract
A method for locating wireless devices within a local region, comprising: determining respective global locations of two or more of the wireless devices; determining whether the wireless devices are within the local region by calculating respective distances between the global locations; determining respective ranges between the wireless devices within the local region; and, determining respective relative locations of the wireless devices within the local region by triangulation using the ranges.
Claims18
A method, comprising:
- receiving Global Positioning System (GPS) data describing global locations for a plurality of wireless devices;
- identifying a set of local wireless devices from the plurality of wireless devices, the set of local wireless devices being within a local region determined according to the GPS data;
- transmitting, to each wireless device within the set of local wireless devices, a message to perform RFID range finding, wherein RFID range finding comprises:
- selecting a plurality of wireless devices within the set of local wireless devices;
- sending, by each wireless device within the selected plurality of wireless devices, an original signal to all other wireless devices within the set of local wireless devices;
- receiving, by the respective wireless device within the selected plurality of wireless devices, a range finding measurement from each of the other wireless devices within the set of local wireless devices, wherein each range finding measurement is a backscattered modulated signal;
- determining a respective relative location of each wireless device within the set of local wireless devices based on a plurality of range finding measurements;
- and
- transmitting, to each wireless device within the set of local wireless devices, the respective relative location of each wireless device within the set of local wireless devices.
6 more elements
A system, comprising:
- a processor coupled to memory, a transmitter, and a receiver;
- and,
- a non-transitory computer-readable medium storing instructions that are operative, when executed on the processor, to perform the functions of:
- receiving Global Position System (GPS) data describing global locations for a plurality of wireless devices;
- identifying a set of local wireless devices from the plurality of wireless devices, the set of local wireless devices being within a local region determined according to the GPS data;
- transmitting, to each wireless device within the set of local wireless devices, a message to perform RFID range finding, wherein RFID range finding comprises:
- selecting a plurality of wireless devices within the set of local wireless devices;
- sending, by each wireless device within the selected plurality of wireless devices, an original signal to all other wireless devices within the set of local wireless devices;
- receiving, by the respective wireless device within the selected plurality of wireless devices, a range finding measurement from each of the other wireless devices within the set of local wireless devices, wherein each range finding measurement is a backscattered modulated signal;
- determining a respective relative location of each wireless device within the set of local wireless devices based on a plurality of range finding measurements;
- and
- transmitting, to each wireless device within the set of local wireless devices, the respective relative location of each wireless device within the set of local wireless devices.
9 more elements
Dependencies are inferred from the claim text.