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Adaptive space division multiplexing: an improved link layer protocol for inter-vehicle communications

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2 Author(s)
Blum, J.J. ; Center for Intelligent Syst. Res., George Washington Univ., Ashburn, VA, USA ; Eskandarian, A.

Current link layer protocols for safety-related inter-vehicle communication networks suffer from significant scalability and security challenges. Carrier sense multiple access (CSMA) 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 timeslot allocation protocols for IVC networks. The protocol requires no control messages, provides protection against a range of DoS attacks, significantly improves bandwidth utilization, and automatically adjusts the timeslot allocation in response to changes in vehicle densities.

Published in:

Intelligent Transportation Systems, 2005. Proceedings. 2005 IEEE

Date of Conference:

13-15 Sept. 2005

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