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Construction and positioning method of indoor wlan signal plan based on multi-dimensional scale mds analysis

A technology of multi-dimensional scale and positioning method, which can be used in location-based services, specific environment-based services, image analysis, etc., and can solve the problem of investing large human and material resources.

Active Publication Date: 2018-05-11
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0005] The purpose of the present invention is to provide an indoor WLAN signal plan construction and positioning method based on multi-dimensional scale MDS analysis, which does not need to collect the received signal strength vector of each reference point in the offline stage, has high positioning accuracy, and can solve the problem of traditional fingerprinting. Problems that need to invest a lot of manpower and material resources in the positioning method

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  • Construction and positioning method of indoor wlan signal plan based on multi-dimensional scale mds analysis
  • Construction and positioning method of indoor wlan signal plan based on multi-dimensional scale mds analysis
  • Construction and positioning method of indoor wlan signal plan based on multi-dimensional scale mds analysis

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Embodiment Construction

[0121] The present invention will be further described below in conjunction with accompanying drawing.

[0122] Such as Figure 1a to Figure 1c The shown indoor WLAN signal plan construction and positioning method based on multi-dimensional scale MDS analysis includes the following steps:

[0123] Step 1. Divide the target area into N that the user is interested in Area target sub-region.

[0124] Step 2: Observe the user's movement path in the target area, and obtain the user's N PathPattern A typical motion path pattern, each motion path pattern is expressed as the connection relationship of several target sub-regions.

[0125] Step 3. Collect N in each motion path mode trace signal sequence, so as to obtain the signal sequence RSS 1 , RSS 2 ,...,RSS n , where n is the total number of signal sequences collected in all motion path modes; RSS i ={rss i1 , rss i2 ,...,rss im}(1≤i≤n), rss ij =(rss ij1 , rss ij2 ,...,rss ijk )(1≤j≤m), where m is the sequence length...

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Abstract

The invention discloses an indoor WLAN signal plan mapping and positioning method based on multidimensional scaling analysis. The method comprises the following steps of observing the motion path mode of a user in a target area in an off-line stage and acquiring a signal sequence according to the observed motion path mode; using an MDS method to perform dimension reduction on the acquired signal sequence and drawing signal plans corresponding to each path mode; converting the signal plans into gray scale images and performing feature extraction and nerve network training; and in a positioning stage, converting a newly acquired signal sequence into gray scale images and further performing feature extraction, performing mode discrimination on the newly acquired signal sequence by using the nerve network acquired through training and further acquiring a user motion curve and direction by estimating. The method can be applied to a radio communication network environment. The method which is mainly used for indoor wireless local area network positioning solves the problem in a conventional fingerprint positioning method that great manpower and material resources are required for investment.

Description

technical field [0001] The invention belongs to indoor positioning technology, and in particular relates to an indoor WLAN signal plane diagram construction and positioning method based on multi-dimensional scale MDS analysis. Background technique [0002] With the development of communication technology, people's demand for wireless positioning is increasing day by day. In the outdoor environment, existing outdoor positioning systems such as the Global Positioning System (GPS) have been widely used. But indoors, due to the complexity of the indoor wireless channel environment, multipath effects, and obvious reflection phenomena, the performance of outdoor positioning systems such as GPS is not satisfactory. In recent years, due to the wide application of WLAN (Wireless Local Area Network) access technologies, positioning using existing WLAN infrastructure has gradually attracted widespread attention. [0003] Since the RSS (Received Signal Strength) value of WLAN is easy ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W64/00H04W4/33H04W4/02H04W4/021G06T7/246G06K9/00G06K9/62
CPCH04W4/029H04W4/04H04W64/00H04W64/006
Inventor 王烟濛周牧田增山张巧唐云霞耿小龙何维李玲霞
Owner CHONGQING UNIV OF POSTS & TELECOMM
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