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Method and device for establishing radio frequency fingerprint database

A technology of radio frequency fingerprinting and establishment method, applied in the field of positioning, can solve problems such as being difficult to implement, consume a lot of manpower and time, and achieve the effect of reducing the complexity of establishment

Inactive Publication Date: 2019-03-12
郑州携能通信技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] However, the biggest bottleneck in the realization of the current wireless positioning method is the establishment of the fingerprint database
Accurate positioning of wireless positioning is based on a huge and complete fingerprint database, which requires a lot of manpower and time to collect reference point fingerprint information
Especially when distributed large-scale antennas are used, due to the high resolution requirements, it will be difficult to directly use traditional methods to collect and establish a radio frequency fingerprint database

Method used

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  • Method and device for establishing radio frequency fingerprint database
  • Method and device for establishing radio frequency fingerprint database
  • Method and device for establishing radio frequency fingerprint database

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Embodiment Construction

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0038] see figure 1 , figure 1 An implementation flowchart of the radio frequency fingerprint database establishment method provided by the embodiment of the present application may include:

[0039] Step S11: evenly sample N first-type location points in different regions in the target environment, and collect wireless signal characteristics of the N first-type location points;

[0040] The target environment is an indoor area where a radio frequency finger...

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Abstract

The embodiment of the present invention discloses a method and device for establishing RF fingerprint database, comprising: firstly, uniformly sampling N positions and collecting wireless signal characteristics of the N positions; then sampling M positions again according to the wireless signal characteristics of the sampled N positions and collecting wireless signal characteristics of the M positions; at last, calculating wireless signal characteristics of un-sampled positions according to the wireless signal characteristics of the sampled positions and establishing a RF fingerprint database. It is thus obvious that the method and device for establishing RF fingerprint database provided in the embodiment of the present invention are only necessary to manually collect the wireless signal characteristics of a part of positions. The wireless signal characteristics of other positions can be calculated based on the wireless signal characteristic of the sampled positions. Therefore, the method and device reduce the complexity for establishing the RF fingerprint database.

Description

technical field [0001] The invention relates to the technical field of positioning, and more specifically, to a method and device for establishing a radio frequency fingerprint database. Background technique [0002] Since indoor positioning cannot be achieved through the GPS positioning system, wireless positioning is mostly used for indoor positioning. [0003] The wireless positioning method can be roughly divided into two stages, one is the offline training stage, and the other is the online positioning stage. In the off-line training phase, staff hold mobile devices to collect signal strength information from different wireless access points at multiple locations in the target environment, and establish a radio frequency fingerprint database. Specifically, in the target environment, some specific positions are manually marked, and the coordinates of these positions are known, and these positions are called reference points. At each reference point, the mobile device s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/80H04W4/02H04W64/00G06F16/29
CPCH04W4/80H04W64/003G06F16/29
Inventor 张洋马嫄韩东思罗文宇
Owner 郑州携能通信技术有限公司
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