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A user location privacy protection method based on latitude and longitude grid in road network environment

A privacy protection and user technology, applied in transmission systems, electrical components, etc., can solve problems such as exposing points of interest, and achieve the effect of improving privacy security and making up for the leakage of interest privacy.

Active Publication Date: 2020-04-28
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0006] In view of this, the purpose of the present invention is to provide a user location privacy protection method based on the latitude and longitude grid in the road network environment, and solve the problem of exposing points of interest when the user continuously inquires through the mobile terminal interest point buffer pool, combined with the latitude and longitude grid Design an Incremental Query Algorithm with Road Network Information

Method used

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  • A user location privacy protection method based on latitude and longitude grid in road network environment
  • A user location privacy protection method based on latitude and longitude grid in road network environment

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Embodiment Construction

[0044] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0045] Such as figure 2 As shown, the implementation of the present invention includes three parts: mobile terminal, anonymous server and location server provider.

[0046] After obtaining the latitude and longitude from the positioning system, the mobile terminal determines the latitude and longitude grid ID of the user, configures the anonymous parameters of the mobile user, generates an anonymous user interest point set on the mobile terminal, and initiates a query request to the anonymous server. After receiving the query request from the mobile terminal, the anonymous server generates an anonymous request set for the mobile user, initiates an incremental query to the LBS instead of the user, and then returns the query information to the mobile terminal. Finally, the mobile terminal filters out useless interest information. Below by ...

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Abstract

The invention relates to a user location privacy protection method in a road network environment based on latitude and longitude grids, and belongs to the field of user privacy security. This method adopts the central server architecture, and uses the latitude and longitude grid method to allow the mobile terminal to perform grid processing on the real location and K-anonymous processing on the mentioned points of interest, and then submit the preliminary processed request data to the anonymous server. The service imports road network information, uses the ARGA algorithm to generate an anonymous area, and uses the multi-point-of-interest incremental query algorithm based on the classic SpaceTwist algorithm to initiate a request to the LBS to obtain detailed interest information and return it to the mobile terminal. The invention combines the latitude and longitude grid to overcome the untrustworthy problem of the anonymous server, introduces the road network information, and enhances the user's privacy security under the special road network environment.

Description

technical field [0001] The invention belongs to the field of user location privacy protection based on location services, and relates to a method for protecting user location privacy in a road network environment based on latitude and longitude grids. Background technique [0002] With the rapid development of 4G technology, mobile terminals have completely penetrated into every aspect of people's lives. The maturity of positioning technology has led to the rapid rise of location-based services. Location-based services are currently a necessity for mobile users. For example, mobile users use their mobile phones to check the restaurants and hotels closest to them. However, although location services provide greater convenience to mobile users, they may threaten user privacy. Attackers are likely to hack through the location server provider to steal the query user's private information and query logs. The attacker cooperates with the location service provider to obtain the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04L29/08
CPCH04L63/0421H04L67/52
Inventor 熊安萍文建军蒋溢祝清意
Owner CHONGQING UNIV OF POSTS & TELECOMM
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