Anonymity, unobservability, and pseudeonymity — a proposal for terminology
International workshop on Designing privacy enhancing technologies: design issues in anonymity and unobservability
The Security and Privacy of Smart Vehicles
IEEE Security and Privacy
Swing & swap: user-centric approaches towards maximizing location privacy
Proceedings of the 5th ACM workshop on Privacy in electronic society
Introduction to Probability Models, Ninth Edition
Introduction to Probability Models, Ninth Edition
On the Optimal Placement of Mix Zones
PETS '09 Proceedings of the 9th International Symposium on Privacy Enhancing Technologies
On non-cooperative location privacy: a game-theoretic analysis
Proceedings of the 16th ACM conference on Computer and communications security
A location privacy metric for V2X communication systems
SARNOFF'09 Proceedings of the 32nd international conference on Sarnoff symposium
Effectively Changing Pseudonyms for Privacy Protection in VANETs
ISPAN '09 Proceedings of the 2009 10th International Symposium on Pervasive Systems, Algorithms, and Networks
Wireless Location Privacy Protection in Vehicular Ad-Hoc Networks
Mobile Networks and Applications
On the effectiveness of changing pseudonyms to provide location privacy in VANETS
ESAS'07 Proceedings of the 4th European conference on Security and privacy in ad-hoc and sensor networks
Measuring long-term location privacy in vehicular communication systems
Computer Communications
On the age of pseudonyms in mobile ad hoc networks
INFOCOM'10 Proceedings of the 29th conference on Information communications
Privacy in inter-vehicular networks: why simple pseudonym change is not enough
WONS'10 Proceedings of the 7th international conference on Wireless on-demand network systems and services
Journal of Network and Computer Applications
Towards modeling wireless location privacy
PET'05 Proceedings of the 5th international conference on Privacy Enhancing Technologies
Privacy issues in vehicular ad hoc networks
PET'05 Proceedings of the 5th international conference on Privacy Enhancing Technologies
A tutorial survey on vehicular ad hoc networks
IEEE Communications Magazine
AMOEBA: Robust Location Privacy Scheme for VANET
IEEE Journal on Selected Areas in Communications
Improving location privacy in mix-zones for VANETs
PCCC '11 Proceedings of the 30th IEEE International Performance Computing and Communications Conference
Editorial: Collaboration computing technologies and applications
Journal of Network and Computer Applications
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In Vehicular Ad hoc NETworks (VANETs), trigger-based pseudonym change schemes play an important role in providing anonymity. However, the anonymity provided by these schemes usually is low mainly because the behavior of changing pseudonym is individual. Considering cooperation on changing pseudonym can enhance anonymity, in this paper, we give a general cooperation framework. As an application of the framework, we present a Cooperative Pseudonym change scheme based on the number of Neighbors (CPN). We generally analyze the anonymity provided by the CPN scheme and qualitatively compare the scheme with its corresponding scheme without cooperation, Non-CPN (NCPN). Then, under uniform traffic distribution, we develop an approximate analytical model for CPN in relatively simple one-lane VANETs to analyze the anonymity. Finally, we investigate the anonymity of CPN in one-lane and multi-lane VANETs by simulation. The results show that the ratio of the size of anonymity set in multi-lane to that in one-lane VANETs, first quickly goes up, then slowly decreases a bit, and at last approaches the value of number of lanes. In addition, the improved performance of CPN over NCPN reaches peak when the average number of neighbors approaches that number in the trigger.