Human beings made Smart Transportation system as an essential need in their daily activity in the present era. For avoiding the road accidents in the present busy lives, it is necessary to create an application which is capable of transferring the emergency information between the vehicle and roadside units. This paper explains such network. The betterment of safety and no safety message delivery will be done by the MAC protocol. Threats occurring with 802.11p MAC protocol will be observed here. Hybrid MAC is capable of accessing two channels simultaneously, so that it can provide better performance during increased traffic load. MAC layer protocol is a challenging architecture for the vehicular network system. It is because of frequent changes in the topology of the vehicular network, huge quality of service requirements, infrastructure inadequacy, and automobile nodes during high speed. If the position of the vehicle is nearer to the network then the operation of the algorithm begins. New vehicles generate the request for sending the message. If there is any availability of the channel, then the channel is allocated and initiates the communication. If it is an old vehicle then it directly goes to the communication monitoring. The vehicle will be in a queue position if there is no availability of channels. When the channel becomes free then it gives first priority to the vehicles which are in the queue. The main aim of the Hybrid MAC protocol is to ensure that all vehicles get a proper channel accessing for conveying their message. Hybrid MAC is capable of reducing the loss of packet, delay in overall function, and collision reduction.
Volume 11 | 06-Special Issue
Pages: 1349-1357