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Crowdsourcing user location privacy protection method based on negative survey in location services

A technology for location services and privacy protection, applied in security devices, electrical components, wireless communications, etc., and can solve problems such as high computational load

Pending Publication Date: 2021-10-26
HENAN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the negative survey method based on the inversion method may produce negative values, and the negative survey method based on the iterative method often has a high amount of calculation and is difficult to be widely used in real life

Method used

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  • Crowdsourcing user location privacy protection method based on negative survey in location services
  • Crowdsourcing user location privacy protection method based on negative survey in location services
  • Crowdsourcing user location privacy protection method based on negative survey in location services

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Embodiment Construction

[0029] 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.

[0030] The embodiment of the present invention discloses a method for protecting location privacy of crowdsourced users based on negative survey in location services, such as figure 1 As shown, the server side is used to collect and process user data;

[0031] The server side receives anonymous location data from the user side that anonymizes the positive location data;

[0032] The server side reconstructs the spatial distribution of anonymous location data ...

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Abstract

The invention discloses a crowdsourcing user location privacy protection method based on negative survey in location services, and relates to the technical field of location privacy protection. A server receives anonymous location data uploaded by a client, spatial distribution reconstruction is carried out on the anonymous location data according to a negative quadtree method based on linear programming, and a result of spatial distribution reconstruction is sent to the client. The negative quadtree method based on linear programming is used for protecting position privacy of users in a crowdsourcing scene, and difference value minimization optimization is performed on the position privacy on the basis, so that the users can effectively resist relevance-based attacks. According to theoretical analysis and experiments, it is proved that the negative quadtree method based on linear programming can still keep the high privacy degree of a user under different data distributions, and the statistical property of data is not affected.

Description

technical field [0001] The invention relates to the technical field of location privacy protection, and more specifically relates to a method for protecting location privacy of crowdsourced users based on negative survey in location services. Background technique [0002] In recent years, with the continuous breakthrough and development of mobile Internet and information technology, mobile intelligent terminal equipment has become more and more widely used in people's life, work and study. High efficiency has been improved. For example, the widespread use of location-based services in mobile smart terminals allows users to obtain the required location-based related services while uploading their own location information, such as: social network positioning, location proximity detection, and traffic flow monitoring. And we are facing an explosion of crowdsourced data that can be aggregated in real time and mined through machine learning techniques to discover valuable inform...

Claims

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Application Information

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IPC IPC(8): H04W12/02H04L29/06
CPCH04W12/02H04L63/0421
Inventor 杨卫东陈星星徐振强张闻强魏巍刘刚
Owner HENAN UNIVERSITY OF TECHNOLOGY
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