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Pseudonym Changing at Social Spots: An Effective Strategy for Location Privacy in VANETs
| Citations: | 34 - 15 self |
BibTeX
@MISC{Lu_pseudonymchanging,
author = {Rongxing Lu and Xiaodong Lin and Tom H. Luan and Xiaohui Liang and Student Member and Xuemin (sherman Shen},
title = {Pseudonym Changing at Social Spots: An Effective Strategy for Location Privacy in VANETs},
year = {}
}
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Abstract
in vehicular ad hoc networks (VANETs), location privacy is imperative for the full flourish of VANETs. Although frequent pseudonym changing provides a promising solution for location privacy in VANETs, if the pseudonyms are changed in an improper time or location, such a solution may become invalid. To cope with the issue, in this paper, we present an effective pseudonym changing at social spots (PCS) strategy to achieve the provable location privacy. Specifically, we first introduce the social spots where many vehicles may gather, e.g., a road intersection when the traffic light turns red or a free parking lot near a shopping mall. By taking the anonymity set size (ASS) as the location privacy metric, we then develop two anonymity set analytic models to quantitatively investigate the location privacy achieved by the PCS strategy. In addition, we use game theoretic techniques to prove the feasibility of PCS strategy in practice. Extensive performance evaluations are conducted to demonstrate that better location privacy can be achieved when a vehicle changes its pseudonyms at some highly social spots, and the proposed PCS strategy can assist vehicles to intelligently change their pseudonyms at the right moment and place.
Keyphrases
location privacy social spot pc strategy pseudonym changing effective strategy full flourish promising solution analytic model frequent pseudonym improper time vehicular ad hoc network extensive performance evaluation game theoretic technique right moment provable location privacy free parking lot many vehicle effective pseudonym road intersection traffic light shopping mall
