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

A mobile tag, location tracking technology, applied in the direction of location-based services, network topology, electrical components, etc.

Inactive Publication Date: 2014-09-17
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 examples are used to illustrate the present invention and not to limit the scope of the present invention. The implementation conditions adopted in the examples can be further adjusted according to the conditions of specific manufacturers, and the unspecified implementation conditions are usually the conditions in conventional technologies.

[0060] Example figure 1 As shown, this embodiment first arranges some fixed tags that are exactly the same as mobile tags in the WIFI network (here two different icons are used in order to distinguish the difference in mobile behavior between mobile tags and fixed tags, and in Locator tags similar to mobile tags may also be used in other systems).

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

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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, in particular to a positioning and tracking method for a WIFI network based on a mobile tag and a fixed tag Received Signal Strength indicator (RSSI) comparison, which belongs to the technical field of telecommunications . Background technique [0002] In a WIFI wireless network, there are usually a certain number of WIFI access points (Access Points, AP hotspots). Since these AP hotspots are immovable, these AP hotspots are generally regarded as fixed locations where their physical location information is known. Anchor node or fixed node. In order to locate personnel, each person is required to carry a tag, so this type of tag to be located 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 function of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/02H04W84/12
Inventor 刘刚金晓杰周涛张鹏
Owner SUZHOU HANMING TECH
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