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Peer-to-Peer Networking and Applications

, Volume 11, Issue 3, pp 473–485 | Cite as

AGENT: an adaptive geo-indistinguishable mechanism for continuous location-based service

  • Xindi Ma
  • Jianfeng Ma
  • Hui Li
  • Qi Jiang
  • Sheng Gao
Article

Abstract

With the widespread use of Location-base Services(LBSs), the problem of location privacy has drawn significant attention from the research community. To protect the user’s exact location, a new notion of privacy, named geo-indistinguishability, that adapts differential privacy has been proposed for LBSs, recently. However, the obfuscation mechanism satisfying this privacy notion only works well in the case of snapshot LBS, which would not apply to the case of continuous LBSs due to the quick loss of privacy caused by the correlation between locations in the trace. In this paper, we propose a novel mechanism, namely AGENT, to protect the user’s location privacy in continuous LBSs. In AGENT, a R-tree is introduced to realize the reusable of generated sanitized locations, which achieves the notion of geo-indistinguishability with less consumption of privacy budget. Finally, empirical results over real-world dataset demonstrate that with the same utility, our mechanism consumes less privacy budget to obfuscate the same trace.

Keywords

Location-based service Privacy preservation Differential privacy Geo-indistinguishability 

Notes

Acknowledgements

This work was supported by the National Natural Science Foundation of China (Grant Nos. U1405255, 61672413, 61672408, 61502368, 61602537, 61602357, 61303221, U1509214), National High Technology Research and Development Program (863 Program) (Grant Nos. 2015AA016007, 2015AA017203), China Postdoctoral Science Foundation Funded Project (Grant No.2016M592762), Shaanxi Science & Technology Coordination & Innovation Project (Grant No.2016TZC-G-6-3), Shaanxi Provincial Natural Science Foundation (Grant Nos. 2015JQ6227, 2016JM6005), China 111 Project (Grant No. B16037), Beijing Municipal Social Science Foundation(Grant No. 16XCC023), Fundamental Research Funds for the Central Universities (Grant Nos. JB150308, JB150309, JB161501, JBG161511).

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Copyright information

© Springer Science+Business Media New York 2017

Authors and Affiliations

  • Xindi Ma
    • 1
    • 2
  • Jianfeng Ma
    • 1
    • 2
  • Hui Li
    • 1
  • Qi Jiang
    • 1
    • 3
  • Sheng Gao
    • 4
  1. 1.School of Cyber EngineeringXidian UniversityXi’anChina
  2. 2.School of Computer Science and TechnologyXidian UniversityXi’anChina
  3. 3.School of Computer & SoftwareNanjing University of Information Science & TechnologyNanjingChina
  4. 4.School of InformationCentral University of Finance and EconomicsBeijingChina

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