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Personalized position privacy protection method based on road network environment

A privacy protection, environmental technology, applied in the field of personalized location privacy protection

Active Publication Date: 2017-03-15
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The work of Li M et al. abstracts the semantic location as a node in the road network, but in reality, the semantic location is very dense in some locations, such as a building containing clinics, supermarkets, etc. If different node descriptions are used, these nodes will be marked in the same position, which is also not realistic

Method used

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  • Personalized position privacy protection method based on road network environment
  • Personalized position privacy protection method based on road network environment
  • Personalized position privacy protection method based on road network environment

Examples

Experimental program
Comparison scheme
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Embodiment

[0075] Such as figure 2 As shown, the detailed process of location-based service request includes the following steps:

[0076] Step 1: The user uses the positioning device to obtain location data, and sends the location data, personalized privacy requirement data, and query information to the intermediate anonymous server, corresponding to figure 2 Middle ① and ②;

[0077] Step 2: The anonymous server constructs the anonymous set according to the road network map information and the user's configuration file, corresponding to figure 2 In ③, the structure of the road network graph is as follows image 3 shown;

[0078] Step 3: After the construction of the anonymous set is completed, the anonymous server sends the user's query content and the anonymous set to the third-party data server. figure 2 Middle ④;

[0079] Step 4: The server queries all users in the anonymous set with the same requirements, and sends all query results back to the anonymous server, corresponding...

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PUM

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Abstract

The invention discloses a personalized position privacy protection method based on road network environment. The method comprises the following steps: 1, initializing a position semantic influence vector of a road section; 2, encapsulating query information Q and sending the same to a anonymous server; 3, adding the road section e in an anonymous set S; and marking the current road section eNow=e; 4, acquiring all adjacent road sections of the eNow, and adding 1 on the road section distance of the eNow of the distance of all adjacent road sections; and adding all adjacent road sections in a candidate set H; 5, the anonymous server calling a distance adjusting module to perform the road section distance adjusting on all road sections in the H; 6, computing the sensitivity of each road section in the H by use of a formula, and selecting the road section et with the lowest sensitivity to add in S, setting eNow=et; 7, the anonymous server calling an anonymous set sensitivity computing module to compute whether S satisfies a user requirement. Through the adoption of the method disclosed by the invention, the attack resistance is strong, the operation is safer, and the considered condition is more suitable for the actual conditions.

Description

technical field [0001] The present invention relates to a technology for protecting the location privacy of mobile users, and in particular to a method for protecting personalized location privacy based on road network environment. protection method. When a mobile user requests service data from a third-party data server based on location information and semantic information, this method ensures that the user enjoys the service data while protecting the user's location privacy and resisting inference attacks and replay attacks by malicious users. Background technique [0002] With the development of positioning technology and the popularization of mobile devices, location-based service (Location-based Service) has become the mainstream way of data request. After a mobile user starts an application and arrives at a certain location, the application actively pushes some information to the mobile user according to the user's location, such as locating nearby stores, restaurant...

Claims

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Application Information

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IPC IPC(8): H04W4/02H04W12/02H04W24/06H04W40/20H04W40/32
CPCH04W4/023H04W4/025H04W12/02H04W24/06H04W40/20H04W40/32Y02D30/70
Inventor 徐红云郑耀辉田凯
Owner SOUTH CHINA UNIV OF TECH