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An online co-location and system based on wi-fi RSS

A technology of collaborative positioning and positioning results, which is applied to services based on location information and services based on specific environments, etc., to achieve the effects of increasing positioning reliability and accuracy, increasing positioning accuracy, and eliminating dimension effects

Active Publication Date: 2021-05-18
HUAZHONG UNIV OF SCI & TECH
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AI Technical Summary

Problems solved by technology

[0005] In view of the defects and improvement needs that the existing fusion indoor positioning technology cannot be applied to multiple users requesting positioning at the same time, the present invention provides an online collaborative positioning method and system based on Wi-Fi RSS. Perform online inter-user calibration in case of location services to enhance WIFI fingerprint based location

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  • An online co-location and system based on wi-fi RSS
  • An online co-location and system based on wi-fi RSS
  • An online co-location and system based on wi-fi RSS

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Embodiment Construction

[0047] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0048] Such as figure 1 As shown, the present invention provides a kind of online co-location method based on Wi-Fi RSS, and this method comprises the following steps:

[0049] Step S1. For each sub-area of ​​the target area, the mean value of the RSS of all sampling points in the sub-area is used as the area fingerprint of the sub-area, and there are multiple Wi-Fi signal sources in the target...

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Abstract

The invention discloses an online cooperative positioning method and system based on Wi-Fi RSS, belonging to the technical field of communication and wireless network. The present invention uses the RSS of other users who request positioning at the same time to obtain the collaborative confidence of all candidate reference points of the target user, and enriches the positioning information without adding additional hardware devices, thereby improving the positioning accuracy; integrating the signal distance of the user itself and collaborative confidence, according to the final comprehensive confidence of the candidate reference point, determine the final positioning result of the target user, increase the reliability and accuracy of positioning; by eliminating the signal source with low regional acceptance rate or weak overall signal strength, thereby Eliminate remote signal sources and temporary hotspot sources. Such invalid signal sources will often interfere with the comparison of fingerprints and improve positioning accuracy; standardize the signal distance set and the collaborative confidence set to eliminate the two The dimensional influence of the indicator increases the positioning accuracy.

Description

technical field [0001] The invention belongs to the technical field of communication and wireless network, and more specifically, relates to an online cooperative positioning method and system based on Wi-Fi RSS (Received Signal Strength, received signal strength). Background technique [0002] Positioning technology that can be directly used to locate and track smartphones has been a focus in indoor positioning research. On the one hand, almost everyone these days carries a smartphone every day to enjoy various location-related applications. Smartphones, on the other hand, are equipped with many internal sensors that measure different types of signals, which can be easily leveraged to implement two popular location technologies, fingerprint-based location technology and dead-reckoning-based tracking technology. [0003] Fingerprint-based indoor positioning assumes that each location can be identified by a unique signal vector called a fingerprint. One of the widely used f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/02H04W4/021H04W4/33
CPCH04W4/021H04W4/023H04W4/33
Inventor 王邦周婵欣
Owner HUAZHONG UNIV OF SCI & TECH
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