Invention Grant
US08155673B2 Estimation of position using WLAN access point radio propagation characteristics in a WLAN positioning system
有权
WLAN定位系统中使用WLAN接入点无线电传播特性的位置估计
- Patent Title: Estimation of position using WLAN access point radio propagation characteristics in a WLAN positioning system
- Patent Title (中): WLAN定位系统中使用WLAN接入点无线电传播特性的位置估计
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Application No.: US13047253Application Date: 2011-03-14
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Publication No.: US08155673B2Publication Date: 2012-04-10
- Inventor: Farshid Alizadeh-Shabdiz , Kaveh Pahlavan
- Applicant: Farshid Alizadeh-Shabdiz , Kaveh Pahlavan
- Applicant Address: US MA Boston
- Assignee: Skyhook Wireless, Inc.
- Current Assignee: Skyhook Wireless, Inc.
- Current Assignee Address: US MA Boston
- Agency: Wilmer Cutler Pickering Hale and Dorr LLP
- Main IPC: H04M1/00
- IPC: H04M1/00 ; H04W4/00
Abstract:
A method for estimating position using WLAN access point radio propagation characteristics in a WLAN location based service is provided. A location-based services system has a plurality of Wi-Fi access points in a target area. The Wi-Fi access points are positioned at geographic locations and have signal coverage areas. A method of characterizing at least one of the Wi-Fi access points comprises determining the geographic location of the Wi-Fi access point, dividing the signal coverage area of the Wi-Fi access point into at least one section, and determining radio propagation characteristics for each section. The radio propagation characteristics of each section characterize a radio channel of the Wi-Fi access point, and the characterization can be used in a location algorithm.
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