Bayes Timeslot Utilization for Efficient Contention Access in VeMAC-VANET?

Vehicular ad hoc networks (VANETs) are high priority safety applications that need medium access control (MAC) protocol for efficient broadcast service. The existing work presented VeMAC, a novel multi channel TDMA MAC protocol for VANET supports efficient one-hop and multi-hop broadcast services on control channel using implicit acknowledgments and eliminating hidden terminal. The drawbacks of existing work allow a node to reserve only one slot in an information frame. Once a node has reserved a slot it ceases contending for other slots. The proposed work presented a Bayes Timeslot Utilization Scheme for improved contention access on control channel in VeMAC. Nodes are allowed to contend for more than one slot in a reservation frame according to priority criteria. The advantages of proposed work allow nodes to reserve a slot adaptively in the information frame as per priority. Simulation methodology is adopted to eliminate the artificial boundary effect of VeMAC.