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US 11,778,418 B2Granted
Aligned multi-wireless device location determination
AssigneeJuniper Networks, Inc.
InventorsNeal Dante Castagnoli, Shmuel Shaffer
Life of this patent
Estimating the term…
Abstract
The disclosed embodiments estimate a location of a first wireless device based on signals received from the wireless device from two other wireless devices. To combine estimates of the two wireless devices, the two wireless devices share a definition of a plurality of geographic regions. A first set of expected phase differences for the plurality of regions are determined for a first of the two wireless devices, and a second set of expected phase differences for the plurality of regions are determined for a second of the two wireless devices. Based on these two sets of expected phase differences, each of the two devices estimate a position of the first wireless device.
Claims20
A method, comprising:
- generating first expected phase differences of signals transmitted from each of a plurality of regions and received by a plurality of receive elements of a first wireless device, the first wireless device located at a first location and first orientation;
- obtaining first phase differences of signals transmitted from a plurality of transmit elements of a second wireless device and received at the plurality of receive elements of the first wireless device;
- determining based on the first phase differences and the first expected phase differences, a second location and second orientation of the second wireless device;
- generating second expected phase differences of signals transmitted from each of the plurality of regions and received at a plurality of receive elements of the second wireless device, the second wireless device located at the second location and second orientation;
- receiving, from the first wireless device, first measured phase differences of signals that the first wireless device received from a third wireless device by the plurality of receive elements of the first wireless device;
- receiving, from the second wireless device, second measured phase differences of signals that the second wireless device received from the third wireless device by the plurality of receive elements of the second wireless device;
- estimating a first location of the third wireless device based on the first measured phase differences and the first expected phase differences;
- estimating a second location of the third wireless device based on the second measured phase differences and the second expected phase differences;
- aggregating the estimated first location of the third wireless device and the estimated second location of the third wireless device;
- and
- determining a location of the third wireless device based on the aggregation.
8 more elements
A system, comprising:
- hardware processing circuitry;
- one or more hardware memories storing instructions that when executed configure the hardware processing circuitry to perform operations comprising:
- generating first expected phase differences of signals transmitted from each of a plurality of regions and received by a plurality of receive elements of a first wireless device, the first wireless device located at a first location and first orientation;
- obtaining first phase differences of signals transmitted from a plurality of transmit elements of a second wireless device and received at the plurality of receive elements of the first wireless device;
- determining based on the first phase differences and the first expected phase differences, a second location and second orientation of the second wireless device;
- generating second expected phase differences of signals transmitted from each of the plurality of regions and received at a plurality of receive elements of the second wireless device, the second wireless device located at the second location and second orientation;
- receiving, from the first wireless device, first measured phase differences of signals that the first wireless device received from a third wireless device by the plurality of receive elements of the first wireless device;
- receiving, from the second wireless device, second measured phase differences of signals that the second wireless device received from the third wireless device by the plurality of receive elements of the second wireless device;
- estimating a first location of the third wireless device based on the first measured phase differences and the first expected phase differences;
- estimating a second location of the third wireless device based on the second measured phase differences and the second expected phase differences;
- aggregating the estimated first location of the third wireless device and the estimated second location of the third wireless device;
- and
- determining a location of the third wireless device based on the aggregation.
10 more elements
A non-transitory computer readable storage medium comprising instructions that when executed configure hardware processing circuitry to perform operations comprising:
- generating first expected phase differences of signals transmitted from each of a plurality of regions and received by a plurality of receive elements of a first wireless device, the first wireless device located at a first location and first orientation;
- obtaining first phase differences of signals transmitted from a plurality of transmit elements of a second wireless device and received at the plurality of receive elements of the first wireless device;
- determining based on the first phase differences and the first expected phase differences, a second location and second orientation of the second wireless device;
- generating second expected phase differences of signals transmitted from each of the plurality of regions and received at a plurality of receive elements of the second wireless device, the second wireless device located at the second location and second orientation;
- receiving, from the first wireless device, first measured phase differences of signals that the first wireless device received from a third wireless device by the plurality of receive elements of the first wireless device;
- receiving, from the second wireless device, second measured phase differences of signals that the second wireless device received from the third wireless device by the plurality of receive elements of the second wireless device;
- estimating a first location of the third wireless device based on the first measured phase differences and the first expected phase differences;
- estimating a second location of the third wireless device based on the second measured phase differences and the second expected phase differences;
- aggregating the estimated first location of the third wireless device and the estimated second location of the third wireless device;
- and
- determining a location of the third wireless device based on the aggregation.
8 more elements
Dependencies are inferred from the claim text.