Privacy protection method and device for Wifi fingerprint positioning

A technology of privacy protection and fingerprint positioning, which is applied in the field of privacy protection of Wi-Fi fingerprint positioning. It can solve the problems of time-consuming and labor-intensive, the impact of WiFi fingerprint database on the accuracy of positioning, and unfair competition among service providers, so as to ensure location privacy and solve problems. The Effect of Privacy Concerns
CN103442335AInactive Publication Date: 2013-12-11INST OF INFORMATION ENG CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
INST OF INFORMATION ENG CHINESE ACAD OF SCI
Publication Date
2013-12-11
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a privacy protection method and device for Wifi fingerprint positioning. The privacy protection method for Wifi fingerprint positioning comprises the following steps that a server extracts all the Wifi fingerprints and fingerprint metadata; a client terminal collects Wifi signal intensity values in the peripheral environment and generates a public key and a private key according to the asymmetrical encryption algorithm, encryption is respectively conducted on the collected Wifi signal intensity values by the public key and a positioning request is sent to the server; the server calculates the fingerprint distance between all the Wifi fingerprints and each encrypted Wifi signal intensity value and transmits multiple sets of encrypted fingerprint distance data to the client terminal; the client terminal uses the private key to decrypt the multiple sets of the encrypted fingerprint distance data, and determines the current location of the client terminal according to the Wifi fingerprint corresponding to each decrypted fingerprint distance datum and the received fingerprint metadata. The privacy protection method and device for Wifi fingerprint positioning solves the privacy problem in an existing WiFi fingerprint positioning technology, and can protect the location privacy of a user and the data privacy of a service provider.
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Description

technical field

[0001] The invention relates to indoor positioning and privacy protection technology, in particular to a privacy protection method and device for Wifi fingerprint positioning. Background technique

[0002] With the continuous expansion and deepening of wireless network, mobile communication and pervasive computing technology applications, location-based services (LBS, Location-based Services) are becoming more and more important. Positioning technology, as the basis of location-aware computing and location-based services, has attracted extensive attention from researchers all over the world. In an indoor environment, terminal devices such as mobile phones cannot receive GPS signals, so indoor positioning technology has become a research hotspot. WiFi fingerprint localization technology is one of the most commonly used indoor localization techniques, which has attracted extensive attention from academia and industry. Companies such as Google, Apple, Navizon,...

Claims

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