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A Guessing Interactive Location Privacy Preservation Method Based on Independence Structure

A technology with independent structure and privacy protection, applied in the field of location privacy security based on location services, it can solve the problems of seeing through, unable to guarantee virtual trajectories, unreasonable false locations, etc., and achieve the effect of protecting location privacy security and high efficiency.

Active Publication Date: 2021-01-01
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the location privacy protection method based on the independent structure generally sends a query request to the SP by replacing the user's real location with a randomly generated fake location. There is no guarantee that a reasonable virtual trajectory will be generated under the location service query, which is easy to be seen by the attacker

Method used

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  • A Guessing Interactive Location Privacy Preservation Method Based on Independence Structure
  • A Guessing Interactive Location Privacy Preservation Method Based on Independence Structure
  • A Guessing Interactive Location Privacy Preservation Method Based on Independence Structure

Examples

Experimental program
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Effect test

Embodiment 1

[0037] as attached figure 1 Shown, protection method of the present invention comprises the following steps:

[0038] Step 1: The user determines the search domain

[0039]When a student U located at Nanyou Campus, Sanpailou, Gulou District, Nanjing wants to search for nearby McDonald’s fast food restaurants, he first selects the search domain RA on his mobile phone. He can set the search domain to Gulou District, Nanjing, or it can be further refined to Near the third archway, it depends on his need for privacy;

[0040] Step 2: Send query request

[0041] When the user U determines the search domain on the mobile terminal, it may be considered that he has selected Gulou District as the search domain RA at this time, and will send the query content q=(con, time, A min ) to SP, con is McDonald's fast food restaurant at this time, time is the query time at this time, A min The minimum hidden area area set for U;

[0042] Step 3: The SP uses a guessing algorithm to generate...

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Abstract

The invention relates to a conjecture interactive location privacy protection method based on an independent structure. The conjecture interactive location privacy protection method comprises the following steps: firstly, determining a searching area by a user; secondly, sending query information to an SP by the user; thirdly, generating one existence domain GED possibly containing location of theuser by adopting a conjecture algorithm in the searching area RA by an SP server after receiving the query information sent by the user; fourthly, displaying the received GED by the user by virtue ofintelligent mobile equipment, and judging whether GED contains ED of a self position or not; and fifthly, carrying out service query by the SP according to queried content and finally received RAfinal. The conjecture interactive location privacy protection method uses the simplest independent structure with the highest efficiency in three frameworks in the prior art of location privacy protection; meanwhile, defects of an existing false position method based on the structure are avoided, information of position coordinates does not need to be uploaded, only interaction with an LBS server needs to be carried out to determine a query domain, and location privacy security of the user is effectively protected.

Description

technical field [0001] The present invention relates to the field of location privacy security based on location services, in particular to a location privacy protection method based on an independent structure, specifically a guessing interactive location privacy protection method based on an independent structure. Background technique [0002] The advent of the 4G era has completely changed people's lives, and the proliferation of smart phones has enabled location-based services (Location-based Services, LBS) to be applied to more fields, providing more convenience for people's lives. Location-based service means that the LBS service provider (SP, LBS provider) provides users with various services including point-of-interest query, navigation, and city attraction recommendation by obtaining the real-time location coordinates and query content of specific users. However, when people use location services, they ignore the harm caused by the leakage of location privacy. By an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W12/02G06F21/62G06F16/9537H04W4/029
CPCG06F21/6254G06F2221/2111H04W4/02H04W12/02
Inventor 张大成吴敏黄海平胡素君朱毅凯于湃张勤沙超
Owner NANJING UNIV OF POSTS & TELECOMM
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