Effects of a realistic channel model on packet forwarding in vehicular ad hoc networks

摘要: The discrepancy between real-world radio channel behavior and its standard modeling in simulations (unit disk graph) is a major reason for protocols to perform differently - often worse than predicted when deployed setup. As researchers having deal with real ad hoc networks are aware of, assuming fixed border node's communication range might not only lead inaccurate results but also wrong judgment on the comparison different protocols. We have set up simulation study investigate effects of realistic characteristics packet forwarding strategies vehicular networks. contributions this paper threefold: i) we provide performance evaluation various routing/forwarding under non-deterministic Nakagami propagation model compare ones obtained using two-ray-ground model. Validated German highway movement patterns used node mobility. ii) demonstrate that conditions present an opportunity drawback some strategies. More specifically, show contention-based (CBF) techniques, positive impact terms increased average hop distance. iii) analytical derivation expected distance CBF provides basis optimally adjust parameters