WLAN-based positioning system

摘要

A technique to provide a WLAN-based positioning system to determine a location of a mobile wireless receiving device. A single access point is used to generate a plurality of beacons, in which each beacon of the plurality of beacons has a unique identifier. Each beacon is then transmitted in a different direction from other beacons. When the receiving device receives at least one of the transmitted beacons, signal strength or some other signal parameter is obtained from the at least one received beacon. The received signal parameter is used to determine the location of the mobile receiving device.

主权项

1. A method comprising:
generating a plurality of directional beacons from a single access point device, in which respective beacons of the plurality of directional beacons have unique Service Set identifiers or Media Access Control addresses to differentiate one directional beacon from other directional beacons; transmitting the plurality of directional beacons from the single access point device in respective different directions over a mapping boundary; receiving the plurality of directional beacons at a mobile device; determining respective received signal parameters for the plurality of directional beacons received by the mobile device based on receive signal strength (RSS), time of arrival (TOA), time difference of arrival (TDOA), and angle of arrival (AOA) of the plurality of directional beacons; accessing, from a database of the mobile device, a mapping of previously measured signal parameters of the plurality of directional beacons for the mapping boundary; and using the respective received signal parameters by the mobile device to locate its position on the mapping of the previously measured signal parameters of the plurality of directional beacons.