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US 2014/0004877 A1Published application
Position Determination Using Round-Trip Delay and Angle-of-Arrival
AssigneeBroadcom Corporation
InventorsFrank VAN DIGGELEN, Vladimir BELOV
Life of this patent
Estimating the term…
Abstract
Embodiments provide systems and methods for position determination. In an embodiment, position is estimated using round-trip delay measurements based on one or more received signals. In another embodiment, position is estimated by further using angle-of-arrival measurements based on one or more received signals. Embodiments may be used by a fixed or mobile device to self-learn its position and to assist other nearby devices learn their positions.
Claims20
A method for position estimation, comprising:
- receiving, at a device, first, second, and third signals, the first, second, and third signals transmitted from first, second, and third locations, respectively;
- calculating first, second, and third round-trip delays from the first, second, and third signals, respectively;
- calculating first, second, and third distance estimates based on the first, second, and third round-trip delays, respectively, wherein the first, second, and third distance estimates estimate distances from the device to the first, second, and third locations, respectively;
- and
- computing a position estimate of the device based on the first, second, and third distance estimates.
2 more elements
A method for position estimation, comprising:
- receiving, at a device, first and second signals, the first and second signals transmitted from first and second locations, respectively;
- calculating first and second round-trip delays from the first and second signals, respectively;
- calculating first and second distance estimates based on the first and second round-trip delays, respectively, wherein the first and second distance estimates estimate distances from the device to the first and second locations, respectively;
- calculating first and second angles of arrival from the first and second signals, respectively;
- and
- computing a position estimate of the device based on the first and second distance estimates and the first and second angles of arrival.
3 more elements
A positioning network, comprising:
- a first device configured to receive a first signal from a mobile device and to calculate a first distance estimate to the mobile device;
- a second device configured to receive a second signal from the mobile device and to calculate a second distance estimate to the mobile device;
- and
- a third device configured to receive a third signal from the mobile device and to calculate a third distance estimate to the mobile device,
- wherein the first device is further configured to compute a position estimate of the mobile device based on the first, second, and third distance estimates and position estimates of the first, second, and third devices.
2 more elements
Dependencies are inferred from the claim text.