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Mobile label positioning and tracking method in WIFI network based on Lankmark

A mobile label, location tracking technology, applied in location-based services, network topology, electrical components, etc.

Inactive Publication Date: 2012-10-10
SUZHOU HANMING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a mobile tag positioning and tracking method in the WIFI network, which solves the impact of the RSSI value changing with time and external environment changes on the positioning results in the actual environment, and improves the positioning accuracy

Method used

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  • Mobile label positioning and tracking method in WIFI network based on Lankmark
  • Mobile label positioning and tracking method in WIFI network based on Lankmark
  • Mobile label positioning and tracking method in WIFI network based on Lankmark

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Embodiment Construction

[0059] The above solution will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are used to illustrate the present invention and not to limit the scope of the present invention. The implementation conditions used in the embodiments can be further adjusted according to the conditions of specific manufacturers, and implementation conditions not specified are usually conditions in conventional technologies.

[0060] Implementation example figure 1 As shown, this embodiment first arranges some fixed tags that are exactly the same as the mobile tags in the WIFI network (here in order to distinguish the difference in the mobile behavior of the mobile tags and the fixed tags, two different icons are used, and in Other systems can also use positioning tags similar to mobile tags).

[0061] In actual positioning, all mobile tags and positioning tags send out beacon frames in a certain period (actually set to 1 second), an...

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Abstract

The invention discloses a mobile label positioning and tracking method in WIFI network based on Lankmark. In the original WIFI local area network, some fixed labels same with or similar to mobile labels are added, and these fixed labels broadcast beacon frames in a certain package sending period. After receiving the beacon frames, AP hotspots in the WIFI network calculate the RSSI value corresponding to each label, and finally send the RSSI value information to a network server. The network server compares the RSSI value information from the mobile labels and the fixed labels to each AP hotspot, and finally determines the position of the mobile labels. And finally a smoothing mechanism is employed to correct the position after positioning. The method provided by the invention can effectively prevent that RSSI value changes with the change of time and external environment and takes effect on a positioning result, greatly improves the positioning accuracy, and effectively eliminates jumping phenomenon in the positioning result, and is particularly suitable for the application of mobile target positioning and tracking in the WIFI environment.

Description

Technical field [0001] The present invention specifically relates to a positioning and tracking method for a mobile tag in a WIFI network, and more particularly to a positioning and tracking method for a WIFI network based on the comparison of the received signal strength indicator (RSSI) of a mobile tag and a fixed tag, belonging to the technical field of electrical communication . Background technique [0002] In a WIFI wireless network, it usually contains a certain number of WIFI access points (Access Points, AP hotspots). Since these AP hotspots are not movable, these AP hotspots are generally regarded as fixed locations with known physical location information. Anchor node or fixed node. In order to locate people, each person is required to carry a tag, so this type of tag to be positioned can be called a mobile tag. Generally, in order to consider the cost factor, the mobile tag used only has the ability to periodically send beacon detection frames, but does not have the...

Claims

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Application Information

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IPC IPC(8): H04W4/02H04W84/12
Inventor 刘刚金晓杰周涛张鹏
Owner SUZHOU HANMING TECH
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