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Continuous query oriented location anonymizing method applicable to location service system

A technology of location service and server, which is applied in the field of privacy protection for continuous query, can solve the problems of privacy leakage of mobile users, and achieve the effect of protecting query privacy and location privacy

Inactive Publication Date: 2015-07-01
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The position anonymity method proposed by the present invention can solve the problem of privacy leakage of mobile users in the position service system

Method used

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  • Continuous query oriented location anonymizing method applicable to location service system
  • Continuous query oriented location anonymizing method applicable to location service system
  • Continuous query oriented location anonymizing method applicable to location service system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0079] At the initial query time T 1 , the first anonymous space Including the mobile user U A ,U B ,U C .

[0080] Step 1: The mobile user sends a request information to the anonymous server

[0081] mobile user U A query content q A Send to the anonymous module in the anonymous server; the query content q A is of the form A ,y A ,Qcon A ,k A ,m A > A for mobile user U A the identity of the x A ,y A Denotes mobile user U A position coordinates; Qcon A Denotes mobile user U A The requested service content; k A Denotes mobile user U A The personalized k anonymous parameter of ; m A Denotes mobile user U A The individualized m-invariance parameter for .

[0082] mobile user U B query content q B Send to the anonymous module in the anonymous server; the query content q B is of the form B ,y B ,Qcon B ,k B ,m B > B for mobile user U B the identity of the x B ,y B Denotes mobile user U B position coordinates; Qcon B Denotes mobile user U B The req...

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Abstract

The invention discloses a continuous query oriented location anonymizing method applicable to a location service system, belonging to the technical field of privacy protection of location service, which comprises the steps of: proposing an anonymizing request by a mobile user; anonymizing the request by an anonymizing module in an anonymizing server, and sending the anonymized request to a location server; processing the request by the location server, integrating query results and sending to the anonymizing server; integrating and filtering received candidate results by a query processing module of the anonymizing server, and sending a precise result to the corresponding mobile user. According to the anonymizing method, personalized customization of privacy protection parameters of the user is permitted. The anonymizing module operates in the anonymizing server, and is used for calculating by the anonymizing method provided by the invention depending on the privacy protection parameters of the mobile user, to guarantee that all anonymizing regions of the mobile user include an identical number of queries in a query valid period and the anonymizing space is shared by the mobile users in the space; and the query privacy of the mobile user who proposes a continuous query in the location service is effectively protected.

Description

technical field [0001] The invention relates to a location service privacy protection technology, more particularly, to a privacy protection method for continuous query in a location service system. Background technique [0002] The rapid development of wireless communications and mobile databases has spawned a new research field—location-based services (LBS). In order to enjoy this service, mobile users must provide their own accurate location information to service providers. If the location provider is untrustworthy then the mobile user's location information will be leaked or used illegally. [0003] Therefore, location-based services have brought great challenges to mobile users' location privacy and query privacy protection. In location services, common queries can be divided into two categories: static (snapshot) queries and continuous (continuous) queries. To protect mobile user location and query privacy in static queries, the location K-anonymity model is widely...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/02H04W12/12H04L29/06H04W12/122
Inventor 李巍刘春雷李云春焦伟蒋江涛
Owner BEIHANG UNIV
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