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Wireless signal fingerprint establishment method and device

A wireless signal and construction method technology, applied in wireless communication, location-based services, instruments, etc., can solve the problems of low accuracy and efficiency, large amount of data, skewed prediction point position, etc., so as to reduce the number of sample points. number, improve the matching efficiency, and reduce the effect of the impact

Active Publication Date: 2018-09-14
CHINA MOBILE COMM LTD RES INST +1
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AI Technical Summary

Problems solved by technology

When positioning, the test data with strong time correlation is very close to the vector of the predicted point, but the actual geographical location is far away. According to the positioning principle of the weighted average of the above scheme, the position of the predicted point will be pulled to the vicinity of these points , thus affecting the positioning accuracy
On the other hand, the above scheme uses all the wireless signal measurement data as the wireless signal fingerprint library, and the amount of data is too large. Even if only the same measurement data as the serving cell is selected as the search space in the positioning process, it is still necessary to calculate multiple distances, Sorting and obtaining a large amount of test data, therefore, the accuracy and efficiency of positioning using the above scheme is not high

Method used

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  • Wireless signal fingerprint establishment method and device
  • Wireless signal fingerprint establishment method and device
  • Wireless signal fingerprint establishment method and device

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Embodiment Construction

[0051] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0052] The construction method of the wireless signal fingerprint provided by the embodiment of the present invention, such as figure 1 As shown, the method includes:

[0053] Step 101: Obtain at least one wireless signal measurement sample point sampled at a preset reference point, wherein the measurement sample point includes at least measurement location information, signal strength information of a serving cell, and signal strength information of neighboring cells of the serving cell;

[0054] Among them, the signal strength of the wireless signal will weaken with the increase of the propagation distance during the space propagation process. The closer the receiving end device is to the signal source, the stronger the signal strength of the signal source is, and the closer the receiving end device is to the signal source. The farther away...

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Abstract

The invention discloses a wireless signal fingerprint establishment method. The method comprises the steps of obtaining at least one wireless signal measurement sample point sampled at preset reference points, wherein the measurement sample points at least comprise measurement location information, serving cell signal strength information and neighbour signal strength information of a serving cell; clustering the measurement sample points according to the measurement location information of the measurement sample points, the serving cell signal strength information and the neighbour signal strength information of the serving cell, thereby forming at least one wireless signal cluster; and generating wireless signal fingerprints corresponding to wireless signal clusters by taking the wireless signal clusters as units. The invention also discloses a wireless signal fingerprint establishment device.

Description

technical field [0001] The invention relates to wireless signal processing technology, in particular to a method and device for constructing wireless signal fingerprints. Background technique [0002] At present, the positioning technology based on wireless signal fingerprint is the focus of the current positioning technology research, because the location information is one of the basic elements of mobile intelligent swarm sensing and Internet of Things applications, and has a wide range of application scenarios in indoor and outdoor environments, such as Personnel navigation in airports, railway stations, and large shopping malls, tracking of special valuables, location-based service push, security and intrusion detection and prevention. Compared with the positioning technology based on distance measurement and proximity, the positioning technology based on wireless signal fingerprints has the advantage that neither the base station side nor the mobile terminal side needs ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/02H04W64/00G06K9/62
CPCH04W4/02H04W64/006G06F18/23
Inventor 吕喆杨晓周岩梁燕萍
Owner CHINA MOBILE COMM LTD RES INST
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