EURASIP Journal on Wireless Communications and Networking - Special issue on wireless access in vehicular environments
Space-orthogonal frequency-time medium access control (SOFT MAC) for VANET
GIIS'09 Proceedings of the Second international conference on Global Information Infrastructure Symposium
ICICS'09 Proceedings of the 7th international conference on Information, communications and signal processing
An intervehicular communication architecture for safety and entertainment
IEEE Transactions on Intelligent Transportation Systems
EPEW'10 Proceedings of the 7th European performance engineering conference on Computer performance engineering
Entertainment technology transfer toward serious use
Proceedings of the 5th International ICST Conference on Simulation Tools and Techniques
A Multichannel QoS MAC with Dynamic Transmit Opportunity for VANets
Mobile Networks and Applications
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Current link-layer protocols for safety-related intervehicle communication (IVC) networks suffer from significant scalability and security challenges. Carrier sense multiple-access approaches produce excessive transmission collisions at high vehicle densities and are vulnerable to a variety of denial of service (DoS) attacks. Explicit time slot allocation approaches tend to be limited by the need for a fixed infrastructure, a high number of control messages, or poor bandwidth utilization, particularly in low-density traffic. This paper presents a novel adaptation of the explicit time slot allocation protocols for IVC networks. The protocol adaptive space-division multiplexing (ASDM) requires no control messages, provides protection against a range of DoS attacks, significantly improves bandwidth utilization, and automatically adjusts the time slot allocation in response to changes in vehicle densities. This paper demonstrates the need for and the effectiveness of this new protocol. The exposures of the current proposals to attacks on availability and integrity, as well as the improvements effected by ASDM, are analytically evaluated. Furthermore, through simulation studies, ASDM's ability to provide message delivery guarantees is contrasted with the inability of the current IVC proposals to do the same