作者：杨志强, 田进华
作者单位：黄淮学院, 河南 驻马店 463000
关键词：车间通信;传输范围;连接;车辆密度;车联网
摘要：
动态拓扑结构以及变化的车联网vanets(vehicular ad hoc networks)给车间通信连接提出挑战。为此,提出基于自适应传输范围建立车间通信方案。首先通过车辆速度、车间距以及车到达率分布知识,推导车辆自适应的传输范围以及传输功率,并得出连接中断的概率;同时,推导同向车间通信连接和反向车间通信连接的分布。最后,通过仿真验证理论推导其正确性。结果表明:车辆自适应传输范围能够有力地提高车间通信连接概率。
adaptive transmission range-based vehicle-to-vehicle communication connectivity performance analysis
yang zhiqiang, tian jinhua
huanghuai university, zhumadian 463000, china
abstract: dynamic topology and unstable vehicular density have posed a challenge to connect vehicle-to-vehicle communication in vehicular ad hoc networks (vanets). therefore, a scheme namely adaptive transmission range-based vehicle-to-vehicle communication connection has been proposed in this paper. first, adaptive transmission range and transmission power have been derived by the knowledge about the speed, arrival rate and distance of vehicle; second, the outage probability of connectivity has been computed; third, the distribution expression of connectivity between the same-direction vehicle and the opposite-direction vehicle has been derived. simulation results show that the derivation is correct and the adaptive transmission range can be applied to improve the probability of vehicle-to-vehicle communication connectivity to a large extent.
keywords: vehicle-to-vehicle communication;transmission range;connectivity;vehicular density;vanets
2016, 42(3): 140-144 收稿日期: 2015-09-13;收到修改稿日期: 2015-11-21
基金项目: 河南省重点科技攻关项目(142102210335)河南省教育厅重点科技攻关项目(13a520786)
作者简介: 杨志强(1979-),男,河南郑州市人,讲师,硕士,研究方向为数据库。
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