J4 ›› 2014, Vol. 41 ›› Issue (3): 214-220.doi: 10.3969/j.issn.1001-2400.2014.03.033

• Original Articles • Previous Articles    

Context-aware location privacy protection technique without TTP and user cooperation

MAO Dianhui1,2;CAI Qiang1,2;LI Haisheng1,2;CAO Jian1,2   

  1. (1. School of Computer and Info. Eng., Beijing Technol. and Business Univ., Beijing  100048， China;
    2. Collaborative Innovation Centre for State-owned Assets Administration, Beijing Technol. and Business Univ., Beijing  100048， China)
  • Received:2013-08-09 Online:2014-06-20 Published:2014-07-10
  • Contact: MAO Dianhui E-mail:maodh@th.btbu.edu.cn

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Abstract:

Most current privacy-preserving techniques either require a trusted third-party (TTP) anonymizer or have proved to be quivering in the users' cooperative stability when temporal-spatial scenes change in located-based service (LBS). In order to address these challenges, this paper introduces an adaptive context-aware privacy-preserving technique without TTP and user cooperation: the context of a user's location can be real-time achieved based on the multi-granularity abstract road-networks from the LBS server. Furthermore, the usage of the context-aware technique ensures adaptability to the user's personalized privacy settings, and enables the LBS server to retrieve the minimal regional road-network and incremental nearest-neighbor results. Theoretical analysis and experimental results validate the technique's effectiveness on LBS accuracy, privacy protection and communication QoS (Quality-of-Service).

Key words: located-based service, location privacy protection, context awareness, context modelling


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