具有多个路边单元的基础设施与车辆通信的能量最小化

Qing Wei, Li Wang, Aiguo Fei
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引用次数: 1

摘要

目前,路边单元(rsu)辅助车载网络中的消息传播因其具有扩展通信覆盖或连接的能力而引起了广泛关注。本文考虑了一个由多个rsu组成的车载业务无线网络,这些rsu负责向过往车辆推送交通信息,并分析了数据传输的能量效率。每个RSU都有一个有限的存储空间,进入RSU覆盖范围的车辆将接收到服务速率由其下行信道条件决定的数据包。我们考虑在平均丢包概率和平均系统时间约束下,多个rsu上的能耗最小化问题。然后,提出了一种低复杂度的rsu数量、传输功率和存储空间联合优化算法。仿真结果与分析结果吻合较好,验证了算法在能量最小化和计算复杂度方面的有效性。实际上,我们提出的方法可以帮助我们决定如何正确部署备用装置,以达到节能的目的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Energy Minimization for Infrastructure-to-Vehicle Communications with Multiple Roadside Units
Nowadays, roadside units (RSUs)assisted message propagation in vehicular networks has aroused the widespread concern due to their ability of extending communication coverage or connectivity. This paper considers a vehicular service radio network consisting of multiple RSUs tasked to push traffic information to passing vehicles, and analyzes the energy efficiency of data transmission. Each RSU has a finite storage room, and vehicles entering the coverage of RSUs would receive packets with service rate determined by their downlink channel conditions. We consider the energy consumption minimization problem over multiple RSUs, under average packet loss probability and average system time constraints. Then, a low complexity algorithm is proposed with joint optimization of the number of RSUs, transmission power, and storage room. Simulation results closely corroborate the analytical results and validate the effectiveness of the proposed algorithm in terms of energy minimization and computation complexity. Practically, our proposed approach can help decide proper deployment of RSUs to achieve energy saving.
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