车联网中基于休眠机制部署RSUs方案
首发时间:2015-06-30
摘要:针对车联网VANETs(Vehicular ad hoc networks)中路边设施单元RSUs(Road Side Units)部署问题,提出部署RSU的新方案,记为P_RSU方案。P_RSU方案以保证必要的数据包传输率PDR(Packet Delivery Ratio)为前提,以降低所有RSUs消耗总能量为目的。P_RSU方案引用休眠机制,并采用太阳能作为RSUs能量供给的补充。首先将P_RSU方案进行形式化表述,形成约束条件、多目标函数。然后,通过RPR(Rainbow Product Ranking)算法求解目标函数,从而获取部署RSUs的最优位置。仿真结果表明,提出的P_RSU方案有效地降低能量消耗,优化RSUs数量。
关键词: 车联网 路边设施单元 能量 太阳能 休眠 RPR算法
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A sleep scheduling -based placement of RSUs in VANETs
Abstract:For the problem of deploying road side units (RSUs) in VANETs (Vehicular ad hoc networks). . In this paper, a new scheme for RSUs placing is proposed, named as P_RSU scheme. The necessary PDR (Packet Delivery Ratio) is prerequisite, and P_RSU scheme is proposed to reduce the total energy consumption of placing RSUs. The sleep mechanism is applied, and the solar in introduced as energy supplement of RSUs. In P_RSU scheme, firstly the formal expression is expressed as the constraint condition and multi-objective function. Secondly, objective function is solved by RPR (Rainbow Product Ranking) algorithm, and the optimal location of placing RSUs is obtained. Simulation results show that the proposed P_RSU scheme is good performance in terms of reducing energy consumption.
Keywords: vehicular ad hoc networks road side units energy sources virtual router sleep scheduling RPR algorithm
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