Location Privacy Schemes in Vehicular Networks: Taxonomy, Comparative Analysis, Design Challenges, and Future Opportunities

Journal article

Ullah, I., Shah, M. A., Khan, A. and Guizani, M. 2025. Location Privacy Schemes in Vehicular Networks: Taxonomy, Comparative Analysis, Design Challenges, and Future Opportunities. ACM Computing Surveys. 57 (6), pp. 1-44. https://doi.org/10.1145/3711681
AuthorsUllah, I., Shah, M. A., Khan, A. and Guizani, M.
Abstract

Vehicular networks (VANETs) revolutionized the world with smart traffic management, utilizing a road environment, and providing safety and convenience to the vehicle driver. Despite the useful features of vehicular networks, there are some privacy issues, which hinder their way toward achieving a smart world. Location privacy is one of the critical research challenges for the efficient deployment of VANETs. This challenge can be solved using a pseudonym instead of an actual vehicle identity in the beacon messages. For this purpose, many location privacy schemes are introduced in the literature. In this paper, we thoroughly review the existing location privacy schemes and present their comprehensive taxonomy. We discuss the design challenges for the development of an efficient location privacy scheme. Moreover, the existing location privacy techniques are critically analyzed based on diverse road network environments and parameters. Various issues and challenges regarding the pseudonym-changing process are elaborated in detail. Finally, we discuss the future trends for the implementation of location privacy in a vehicular network.

KeywordsVANETs; location privacy; pseudonym; mix zone; silent period; group signature; path perturbation; anonymous authentication
Year2025
JournalACM Computing Surveys
Journal citation57 (6), pp. 1-44
PublisherACM
ISSN0360-0300
Digital Object Identifier (DOI)https://doi.org/10.1145/3711681
Web address (URL)https://dl.acm.org/doi/10.1145/3711681#:~:text=Location%20privacy%20is%20one%20of,are%20introduced%20in%20the%20literature.
Accepted author manuscript
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Open
Output statusPublished
Publication dates
Online10 Feb 2025
Publication process dates
Accepted24 Dec 2024
Deposited04 Mar 2025
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