An efficient privacy-preserving indoor positioning method based on wi-fi fingerprints

A privacy protection and indoor positioning technology, applied in the field of indoor positioning with efficient privacy protection, can solve the problems of long calculation time, large space occupied by ciphertext, and inability to solve practical application problems of mobile terminals, etc., and achieves high communication efficiency, Simple implementation and reduced encryption time
CN105530609BActive Publication Date: 2018-09-21广州高新兴机器人有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
广州高新兴机器人有限公司
Publication Date
2018-09-21

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Abstract

The invention provides an indoor positioning method for efficient privacy protection based on Wi-Fi fingerprint. The indoor positioning method comprises the following steps: at first, collecting the fingerprint of each position indoors and generating an index set; and then, transmitting the index set to a client through a wireless network, for enabling a user to look up the position information per se, wherein the fingerprint refers to a RSS signal of each position corresponding to each Wi-Fi access point, and the index set comprises multiple hash tables, parameters of a corresponding function group of each hash table and a position coordinate of each fingerprint marked by a fingerprint serial number. According to the indoor positioning method provided by the invention, a method of using a position sensitive hash function to encrypt position privacy is adopted to achieve high efficiency and privacy protection properties. The positioning is redesigned to achieve the purposes of reducing the computing time and space, improving the positioning precision and protecting the privacy of the position information of a user and a server.
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Description

technical field

[0001] The present invention relates to a technology in the field of wireless communication, in particular to an indoor positioning method based on Wi-Fi fingerprint and efficient privacy protection. Background technique

[0002] Due to the development of wireless technology, many indoor positioning methods based on various characteristics of wireless signals have emerged, some based on FM signals, audio signals, but more positioning methods based on Wi-Fi signals.

[0003] The essence of positioning methods is location-based services, which also include many types, such as location-based advertisement push, location-based query services, etc., and the issue that is often overlooked is the privacy of location information. In the location information interaction of indoor positioning, when the user transmits fingerprint information to the server for matching, the fingerprint information may be eavesdropped by the attacker, resulting in the leakage of location ...

Claims

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