An enhanced self-scheduled access control in vehicular ad hoc networks (VANET)

Wireless ad hoc networks are self-configuring, dynamic networks in which nodes are free to move and it forwards the data packets over the multiple hops to the destination. Nowadays these networks are widely deployed in military applications, vehicular surveillance, and disaster relief. Now, car is a formidable sensor platform, gathers the information from the environment and sending it to drivers and infrastructure to assist in safe navigation, pollution control and traffic management. In this paper the system proposed the Enhanced Non-Cooperative Cognitive Division Multiple Access (ENCCMA) proposal with MAC protocol. These protocols are responsible for active nodes. This proposed algorithm that combines the Time Division Multiple Access (TDMA) and Frequency Division Multiple Access (FDMA) schemes with CR techniques to fulfill the requirements of real-time communications. The emerging field of cognitive radio (CR) networks is to alleviate the problem of spectrum shortage by transmitting on other vacant portions of the spectrum. In addition, it can produce variations in spectrum occupancy such as vehicles joining or leaving the company.