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Registered METHOD AND APPARATUS FOR ESTIMATING POSITION OF ACCESS POINT IN WI-FI SYSTEM
- Inventors
- Uzair Ahmad, Wan Sik Choi, Kim Do Hyun, Youngsu Cho, Ji Myungin, Park Sang Joon, Yun Sungjo, Dong Kyoo Kim
- Application No.
- 13286716 (2011.11.01)
- Publication No.
- 20120122475 (2012.05.17)
- Registration No.
- 8787930 (2014.07.22)
- Country
- UNITED STATES
- Project Code
- 10MC1800, Development of Indoor/Outdoor Seamless Positioning Technology, Wan Sik Choi
- Abstract
- A method and apparatus for estimating a position of an access point (AP) includes (a) measuring a strength of a signal, transmitted by the AP, at three or more measurement points (MPs), (b) selecting an imaginary attenuation factor, (c) calculating a range between the AP and each of the MPs on the basis of the imaginary attenuation factor and a strength of a signal measured at the MP, (d) calculating an intersecting point of ranging circles in each of which a position of the MP is a center and the range between the MP and the AP is a radius, (e) calculating a best intersecting point from among a plurality of the intersecting points obtained by repeating the steps (c) and (d) while changing the imaginary attenuation factor, and (f) estimating the best intersecting point as the position of the AP.
- KSP Keywords
- Access point, IEEE 802.11(Wi-Fi), Measurement points, attenuation factor
- Family
| Status | Patent | Country | KIPRIS |
|---|---|---|---|
| Registered | Ｗｉ-Ｆｉ 시스템에서 접속 지점 위치 추정 방법 및 장치 | KOREA | KIPRIS |