Title: Method of trajectory privacy protection based on restraining trajectory in LBS

Authors: Zemao Zhao; Jiabo Wang; Chuanlin Sun; Youwei Yuan; Bin Li

Addresses: School of Engineering and Design, Lishui University, Lishui Zhejiang, 323000, China ' School of Communication Engineering, Hangzhou Dianzi University, Hangzhou Zhejiang, 310018, China ' School of Communication Engineering, Hangzhou Dianzi University, Hangzhou Zhejiang, 310018, China ' School of Computer Science and Technology, Hangzhou Dianzi University, Hangzhou Zhejiang, 310018, China ' Wangyibao Co., Ltd., No. 599 Wangshang Road, Binjiang District, Hangzhou, Zhejiang, 310000, China

Abstract: With the development of mobile positioning technology, location-based services are becoming more and more widely used in life, but it has produced the security problem of the user's privacy leakage. In this paper, the problem of user trajectory privacy protection in location-based services is introduced, and a method of trajectory privacy protection based on restraining trajectory in LBS is proposed. The proposed method is done by restraining the release of sensitive position and choosing a non-sensitive position that the user might stay at with the maximum probability to replace the sensitive position. So it will prevent the leakage of sensitive position of user's trajectory, and protect the user's activity trajectory, and give the method of calculating the privacy protection degree of restraining method.

Keywords: location-based service; LBS; privacy preservation; trajectory privacy; restraining trajectory.

DOI: 10.1504/IJICT.2018.094321

International Journal of Information and Communication Technology, 2018 Vol.13 No.3, pp.329 - 339

Available online: 10 Apr 2018 *

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