Obstacle-Aware Radio Propagation and Environmental Model for Hybrid Vehicular Ad hoc Network

The presence of physical obstacles between communicating vehicles will significantly impact the packet transmission performance of the vehicular ad hoc network (VANET). This is because the line-of-sight link among transmitter and receiver is frequently being obstructed. Very limited work is carried out addressing the impact of the presence of multiple obstacles in the line of sight (LOS) of communicating vehicle on different environment condition such as urban, rural, and highway. Further, very limited work is carried out in incorporating obstructing effect in designing medium access control (MAC) under multichannel VANET communication environment, resulting in packet collision and affecting system throughput performance. Thus, an efficient MAC design that maximizes throughput with a minimal collision is required. For overcoming research challenges, an obstacle-aware radio propagation (OARP) model for the different environment such as urban, rural, and highway is presented. Along with, a distributed MAC (DMAC) that maximize system throughput is presented. Experiment outcome shows proposed OARP-DMAC model attain significant performance over existing radio propagation and MAC model in terms of throughput and packet collision.