Locating method in wireless LAN and device thereof

Abstract

The invention discloses a locating method in a wireless LAN and a device thereof. The locating method comprises the following steps: acquiring a sample set composed of a plurality of sample points closest to the location to be determined according to a nearest neighbor algorithm; acquiring central positions of the sample points in the sample set, and the distance between the sample points and thecentral positions; judging whether the sample points with the distance from the central positions which is more than a preset standard exist, if yes, deleting the sample points with the distance fromthe central positions which is more than the preset standard from the sample set, and returning to the previous step; otherwise continuing to the next step; and determining the location to be determined according to the various sample points included in the sample set. The locating method in the wireless LAN and the device thereof help improve precision and credibility of locating results in the wireless LAN.

Description

technical field [0001] The invention relates to the field of network technology, in particular to a positioning method and device in a wireless local area network. Background technique [0002] With the wide application of WLAN (Wireless Local Area Network, wireless local area network), WLAN systems are deployed in more and more places, so as to realize effective wireless data communication services. In view of the characteristics of wireless signal transmission, at different distances, wireless signals show different strengths, so using the difference in signal strength from a Station (terminal) to multiple APs (Access Points, Access Points), a certain accuracy can be achieved wireless positioning. At the same time, because the GPS (Global Position System, Global Positioning System) signal cannot penetrate buildings and cannot be used indoors, then the WLAN positioning system can play a corresponding role. The indicator of wireless signal strength is RSSI (Radio Signal St...

AI Technical Summary

Problems solved by technology

[0006] Based on the above analysis, it can be found that the problem of the existing technology is that, in view of the complexity of the indoor wireless signal distribution, the physical distance between the individual nearest neighbor points calculated by the nearest neighbor method and the real position may be relatively long, and a large position deviation may easily occur.

Images