In Vehicle-to-Everything (V2X) networks, where all vehicles and infrastructures are interconnected for information sharing, data dissemination is increasingly playing a significant role in superior and pluralistic communication services. To empower the efficiency of data dissemination, in this paper, we propose a novel unmanned aerial vehicle (UAV)-enabled scheduling protocol consisting of a proactive caching policy and a file sharing strategy in V2X networks. In the proactive caching process, we deploy UAVs as flying base stations (BSs) with caching capability, where we propose a UAV dynamic trajectory scheduling (DTS) algorithm to optimize the caching duration. Whereas in the file sharing strategy, based on the previous vehicular caching status, we provide a framework of file sharing cycle for data dissemination scheduling and employ a channel prediction algorithm to alleviate communication overhead. Moreover, we propose a relay ordering algorithm to effectively improve the file sharing process. Simulation results demonstrate that, our proposed scheduling protocol can enhance the efficiency of data dissemination and achieve an improved network performance in terms of caching process, system throughput, and file sharing latency in V2X networks.

中文翻译：

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在 V2X 网络中具有主动缓存和文件共享的 UAV 数据传播协议

在车对一切 (V2X) 网络中，所有车辆和基础设施都互连以进行信息共享，数据传播在优质和多元化的通信服务中越来越重要。为了提高数据传播的效率，在本文中，我们提出了一种新颖的支持无人机（UAV）的调度协议，该协议由 V2X 网络中的主动缓存策略和文件共享策略组成。在主动缓存过程中，我们将无人机部署为具有缓存能力的飞行基站（BS），我们提出了一种无人机动态轨迹调度（DTS）算法来优化缓存持续时间。而在文件共享策略中，基于之前的车载缓存状态，我们为数据分发调度提供了一个文件共享周期框架，并采用信道预测算法来减轻通信开销。此外，我们提出了一种中继排序算法来有效改善文件共享过程。仿真结果表明，我们提出的调度协议可以提高数据传播的效率，并在 V2X 网络中的缓存过程、系统吞吐量和文件共享延迟方面实现改进的网络性能。