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Locating method in wireless LAN and device thereof

A technology of wireless local area network and positioning method, applied in the field of positioning method and device in wireless local area network, can solve the problems of poor RSSI accuracy and complex signal distribution, and achieve the effect of improving accuracy

Active Publication Date: 2012-09-26
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem with this algorithm is that due to the complexity and randomness of the signal distribution, the accuracy of the RSSI measured by the AP may be poor, resulting in a large deviation between the final positioning result and the actual position.

Method used

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  • Locating method in wireless LAN and device thereof
  • Locating method in wireless LAN and device thereof
  • Locating method in wireless LAN and device thereof

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Experimental program
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Embodiment Construction

[0045] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0046] The invention provides a positioning method in a wireless local area network WLAN, such as figure 1 shown, including:

[0047] Step s101 , for each sampling point in the RSSI average training database, set the weight of the RSSI average value of each AP collected from the position corresponding to the sampling point.

[0048] Step s102, according to the RSSI average value of each AP collected from the position to be determined, and the RSSI average value of each AP collected from the position corresponding to the sampling point and its weight, obtain the position corresponding to the position to be determined and the sampling point distance between locations.

[0049] Step s103 , according to the distance between the posi...

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Abstract

The invention discloses a locating method in a wireless LAN and a device thereof. The locating method comprises the following steps: setting a weight value of a RSSI mean value of each AP collected from the locations corresponding to the sample points for each sample point in a RSSI mean value training database; acquiring the distance between the locations to be determined and the locations corresponding to the sample points according to the RSSI mean value of each AP collected from the locations to be determined, and the RSSI mean and the weight value thereof of each AP collected from the locations corresponding to the sample points; and determining the locations to be determined according to the distance between the locations to be determined and the location corresponding to each samplepoint in the RSSI mean value training database. The locating method in the wireless LAN and the device thereof help improve locating precision in the WLAN according to a nearest neighbor algorithm.

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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/02H04W84/12G01S5/02
Inventor 计光
Owner NEW H3C TECH CO LTD
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