NDLI: Multi-layer partition for query location anonymization

Content Provider	IEEE Xplore Digital Library
Author	Shyue-Liang Wang Chung-Yi Chen I-Hsien Ting Tzung-Pei Hong
Copyright Year	2012
Description	Author affiliation: Dept. of Computer Science and Information Engineering, National University of Kaohsiung, Taiwan (Tzung-Pei Hong) \|\| Department of Information Management, National University of Kaohsiung, Taiwan (Shyue-Liang Wang; Chung-Yi Chen; I-Hsien Ting)
Abstract	Due to the proliferation of Global Position System (GPS) and smart phone technology, Location-Based Service (LBS) has attained tremendous growth in recent years. Spatial queries retrieving nearest Point-Of-Interests (POI) require actual user locations for services. However, sharing such sensitive personal location information with potentially malicious servers may cause concerns about user privacy. The current obfuscation-based approach addressing this problem cannot provide binding privacy guarantees as a trusted third-party anonymizer is required. On the other hand, the data-encryption-based and cPIR-based approaches incur costly computation overheads. Recently, the secure hardware-aided PIR-based technique has been shown to be superior to formers, but it did not consider the characteristics of data distribution of searching domain. In this work, we propose two schemes: MSQL, NSQL, based on flexible multi-layer grids and non-empty lookup table for efficient storage and retrieval on non-uniform distribution of POI data, so that improved performance of PIR-based techniques could be achieved. Numerical experiments demonstrate that the proposed techniques indeed deliver better efficiency under various criteria.
Starting Page	378
Ending Page	383
File Size	1361376
Page Count	6
File Format	PDF
ISBN	9781467317139
e-ISBN	9781467317146
e-ISBN	9781467317122
DOI	10.1109/ICSMC.2012.6377730
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-10-14
Publisher Place	Korea (South)
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Databases Privacy Servers Hardware Mobile radio mobility management Cryptography Organizations private information retrieval location-based service spatial query location privacy anonymization
Content Type	Text
Resource Type	Article

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