Patent ID: 8019357
Filing Date: 2011-09-13
Classification: G01S,H04W

Abstract:
1. In a Wireless Local Area Network (WLAN) positioning system for estimating the position of a WLAN-enabled device, a method of estimating an expected error of a position estimate, the method comprising: the WLAN-enabled device receiving signals transmitted by at least one WLAN access point in range of the WLAN-enabled device, the at least one WLAN access point having an estimated characteristic; and estimating an expected error, in terms of distance, of a position estimate that would result if the received signals from the at least one WLAN access point were used in a position estimation determination based on the estimated characteristics of the at least one WLAN access point in range of the WLAN enabled device, wherein the expected error predicts a relative accuracy of the position estimate.