Estimating the lateral location of a wireless terminal based on temperature and atmospheric pressure

摘要

A technique is disclosed for estimating the lateral location of a wireless terminal in a geographic region. The technique is based on the recognition that some three-dimensional locations of the wireless terminal are improbable, and that measurements of temperature and atmospheric pressure at the wireless terminal and outside can be used to determine which lateral locations of the wireless terminal are improbable.

主权项

1. A method of estimating the lateral location of a wireless terminal, the method comprising:
receiving, at a data processing system, the identity of a radio signal that is received by a wireless terminal; receiving, at the data processing system, a measurement of atmospheric pressure at the wireless terminal; designating at least one of a plurality of possible lateral locations of the wireless terminal as improbable based on:
(i) the measurement of atmospheric pressure at the wireless terminal; and estimating the lateral location of the wireless terminal to be one of the plurality of possible lateral locations of the wireless terminal not designated as improbable based on:
(i) the identity of the radio signal.