Collision correction using a cross-layer design architecture for dedicated short range communications vehicle safety messaging

Authors:
William G. Cassidy;Nabih Jaber;Kemal E. Tepe
Affiliations:
Department of Electrical and Computer Engineering, WiCIP Laboratory, University of Windsor, Windsor, Ontario, Canada;Department of Electrical and Computer Engineering, ISWiNLab, Lawrence Technological University, Southfield, MI, USA;Department of Electrical and Computer Engineering, WiCIP Laboratory, University of Windsor, Windsor, Ontario, Canada
Venue:
Ad Hoc Networks
Year:
2014

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Abstract

This paper presents a new physical (PHY) and medium access control (MAC) cross-layer design frame collision correction (CC) architecture for correction of Dedicated Short Range Communications (DSRCs) safety messages. Conditions suitable for the use of this design are presented, which can be used for optimization. At its basic level, the CC at the PHY uses a new decision making block that uses information from the MAC layer for the channel estimator and equalizer. This requires a cache of previously received frames, and pre-announcing frame repetitions from the MAC. We present the theoretical equations behind CC mechanism, and describe the components required to implement the cross-layer CC using deployment and sequence diagrams. Simulation results show that especially under high user load, reception reliability of the DSRC safety messages increases and PER decreases.