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Indoor WLAN (Wireless Local Area Network) positioning method based on random user signal logic diagram mapping

A positioning method and logic diagram technology, which can be applied in the directions of location-based services, wireless communications, electrical components, etc., and can solve the problem of collecting a large amount of location fingerprint data.

Active Publication Date: 2015-05-06
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0005] In order to solve the problem that the position fingerprint positioning method needs to collect a large amount of position fingerprint data in the offline stage, the present invention provides an indoor WLAN positioning method based on random user signal logic map mapping

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  • Indoor WLAN (Wireless Local Area Network) positioning method based on random user signal logic diagram mapping
  • Indoor WLAN (Wireless Local Area Network) positioning method based on random user signal logic diagram mapping
  • Indoor WLAN (Wireless Local Area Network) positioning method based on random user signal logic diagram mapping

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Embodiment Construction

[0047] Further illustrate the realization process of this method below in conjunction with accompanying drawing:

[0048] Flow process of the present invention sees Figure 1A and Figure 1B :

[0049] Step 1: Randomly collect several received signal strength sequences S in the positioning target area j ={RSS j1 ,...,RSS jM}(j=1,...,z), where M is the sequence length, that is, the number of received signal strength vectors; z is the number of sequences; RSS jk =(RSS jk1 ,...,RSS jkn )(k=1,...,M) is the kth received signal strength vector in the jth sequence; n is the number of APs; RSS jkr (r=1,...,n) is the signal strength value from the rth AP in the kth received signal strength vector of the jth sequence; z=21 in the experiment. The acquisition path of the 21 sequences is as follows Figure 9 shown. Figure 10 is the overall distribution of the signal strength of the 21 RSS sequences collected. Since the strength of the received signal changes significantly before ...

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Abstract

Disclosed is an indoor WLAN positioning method based on random user signal logic diagram mapping. The indoor WLAN positioning method based on random user signal logic diagram mapping is mainly applied to indoor WLAN positioning and solves the problem that a WLAN position fingerprint positioning method requires large amounts of manpower and time cost for collecting position fingerprints. The method comprises, firstly, through RSS (received signal strength) sequences collected by random users, structuring a signal logic diagram of the random users inside a positioning target area through a spectral clustering and sequence splicing method; secondly, according to corresponding mapping standards, establishing mapping from the RSS cluster nodes inside the signal logic diagram to area position nodes inside a physical environment diagram; finally, according to the mapping relation from an optimal signal logic diagram and the physic environment diagram, achieving position estimation for a target user. The indoor WLAN positioning method based on random user signal logic diagram mapping can be applied to wireless communication network environments.

Description

technical field [0001] The invention relates to an indoor WLAN positioning method based on random user signal logic map mapping Background technique [0002] With the increasingly widespread application of mobile devices and the popularity of wireless networks, users have increasingly strong demands for immediacy and locality of information, so location-based services (LBS) are also receiving much attention. focus on. Currently more popular wireless positioning systems include GPS (Global Positioning System), cellular positioning system, Bluetooth positioning system, radio frequency identification RFID (Radio Frequency Identification) positioning system, ZigBee positioning system and Wi-Fi positioning system. Among them, GPS has high positioning accuracy outdoors and is widely used. However, in environments with many obstacles, such as urban streets or indoors with many tall buildings, the signal of a single satellite signal will weaken sharply, making it difficult for the ...

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Application Information

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IPC IPC(8): H04W64/00H04W4/02
Inventor 周牧张巧田增山蒋青周非范馨月邱枫李坤鹏
Owner CHONGQING UNIV OF POSTS & TELECOMM
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