Patent ID: 7856234
Filing Date: 2010-12-21
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, a method comprising: the WLAN-enabled device receiving signals transmitted by at least one WLAN access point in range of the WLAN-enabled device; estimating the position of the WLAN-enabled device based on the received signals from the at least one WLAN access point in range of the WLAN enabled device; and estimating an expected error, in terms of distance, of the position estimate based on characteristics of the at least one WLAN access point used for estimating the position of the WLAN-enabled device, wherein the expected error predicts a relative accuracy of the position estimate in terms of distance.