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.
CN102724625BInactive Publication Date: 2014-09-17SUZHOU HANMING TECH
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
SUZHOU HANMING TECH
Publication Date
2014-09-17
Estimated Expiration
Not applicable ยท inactive patent

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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.
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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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