Sensing relative position from a wireless transceiver

摘要

Disclosed is an apparatus, system and method for determining a location of a mobile device based on a location of a wireless network node, a distance between the wireless network node and the mobile device, and a bearing from the wireless network node to the mobile device, wherein the bearing is determined based on a directional signal and magnetometer measurements.

主权项

1. A method for determining a location of a mobile device, the method comprising:
receiving, at the mobile device, a directional signal, wherein the directional signal is swept across various angles dependent upon time, determining a maximum among a plurality of sampled steps of the received directional signal at the mobile device at various times; determining a time (tMAX) at which the maximum is received at the mobile device; converting the time (tMAX) to a maximum body bearing value using a time reference and sweeping rate of the directional signal; determining a bearing by translating the body bearing using a plurality of predetermined rotational references; and determining a location of the mobile device based on the bearing.