针对车联网（vehicular ad hoc networks，VANETs）中路边设施单元（road side units，RSUs）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（packet delivery ratio，PDR）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 方案能有效地降低能量消耗、优化 RSUs 数量。%For the problem of deploying road side units (RSUs)in (vehicular ad hoc networks,VANETs).A new scheme for RSUs placing is proposed,named as P RSU scheme.The necessary (packet delivery ratio,PDR)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 in-troduced 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 opti-mal location of placing RSUs is obtained.Simulation results show that the proposed P RSU scheme is good performance in terms of reducing energy consumption.
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