A Survey on MAC Protocol for Vehicular Adhoc Networks

In recent years the government, standardization bodies, automobile manufacturers, and academia are being working together for the development of the vehicular adhoc network (VANETs) based communication technologies. For enabling better reliable and efficient communications in VANETs the standards like the IEEE 802.11p or the WAVE (Wireless Access in Vehicular Environment) standard has issued physical (PHY) and medium access control layer (MAC) specifications. This paper surveys recent MAC protocols that has being proposed for Vehicular adhoc Network and also presents a clarification for the various approaches pursued. This paper mainly based on the different MAC protocols that are proposed for reliable and efficient broadcast and transmission of the messages in VANETs. Each routing protocol is discussed and described under appropriate category.