A peer-to-peer spatial cloaking algorithm for anonymous location-based service

Chi Yin Chow, Mohamed F. Mokbel, Xuan Liu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

405 Scopus citations

Abstract

This paper tackles a major privacy threat in current location-based services where users have to report their exact locations to the database server in order to obtain their desired services. For example, a mobile user asking about her nearest restaurant has to report her exact location. With untrusted service providers, reporting private location information may lead to several privacy threats. In this paper, we present a peer-to-peer (P2P)spatial cloaking algorithm in which mobile and stationary users can entertain location-based services without revealing their exact location information. The main idea is that before requesting any location-based service, the mobile user will form a group from her peers via single-hop communication and/or multi-hop routing. Then,the spatial cloaked area is computed as the region that covers the entire group of peers. Two modes of operations are supported within the proposed P2P s patial cloaking algorithm, namely, the on-demand mode and the proactive mode. Experimental results show that the P2P spatial cloaking algorithm operated in the on-demand mode has lower communication cost and better quality of services than the proactive mode, but the on-demand incurs longer response time.

Original languageEnglish (US)
Title of host publicationProceedings of the 14th Annual ACM International Symposium on Advances in Geographic Information Systems, ACM-GIS'06
Pages171-178
Number of pages8
DOIs
StatePublished - Dec 1 2006
Event14th Annual ACM International Symposium on Advances in Geographic Information Systems, ACM-GIS'06 - Arlington, VA, United States
Duration: Nov 6 2006Nov 11 2006

Publication series

NameGIS: Proceedings of the ACM International Symposium on Advances in Geographic Information Systems

Conference

Conference14th Annual ACM International Symposium on Advances in Geographic Information Systems, ACM-GIS'06
CountryUnited States
CityArlington, VA
Period11/6/0611/11/06

Keywords

  • Location privacy and spatial cloaking
  • Location-based services
  • Mobile computing

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