A novel MAC protocol based on cooperative master-slave for V2V communication

The effective broadcasting of emergency messages in vehicular ad-hoc networks can make a distinction between life and death. To accomplish the life-saving objectives, emergency message broadcasting needs timely and confident medium access in vehicular ad hoc networks. Currently, vehicular ad-hoc network applications are restricted for using the dedicated short range communication standard (DSRC). The DSRC standard exploits IEEE 802.11 for medium access control and evidently IEEE 802.11 suffers from unbounded delivery latency at higher loads. Latency in any form is not acceptable by emergency applications and devising a new medium access protocol that meets vehicular environment´s criteria is inevitable. This paper proposes a novel medium access control protocol for vehicular wireless networks. The proposed protocol utilizes the combination of recommended cooperative master-salve architecture and time division multiple access technique (TDMA) for broadcasting emergency messages. The simulation results present the performance analysis and validate the efficiency of the proposed schema.