A TDMA Scheme for Emergency Forecasting in Dynamic Vehicular Networks

Mobility of terminals would bring changes of network topology. In dense VANET multi-hop communication with nodes of high speed, a problem how to choose a next hop relay rapidly made a significant sense. In this paper, a slot assignment for voice access named Black-burst scheme based TDMA was proposed for channel access contention. The problem of relay selection could be solved as a method of voice access control with priority. Numerical results show that in scenarios of movement with different nodes distribution, a shorter access delay and a lower cost could be obtained in MAC protocols based on Black-burst mechanism comparing with the traditional TDMA random channel access method.