Multi channel MAC protocols for broadcast transmissions in vehicular networks

Broadcasting is the elementary operation used for emergency purposes as well as in many routing protocols which are the largest percentage of messages sent in vehicular networks. This is also useful for high bandwidth non-safety applications in vehicular network scenario where there are low delay requirements. Multi channel operation uses multiple orthogonal frequencies for communication in a network. This parallelism increases the throughput drastically and can potentially reduce the delay. We developed a new multi channel MAC protocol which uses only broadcast messages to increase the network throughput in both inter-vehicular and between vehicle and road-side unit communications. Analysis is done for both the cases and compared with the simulations.