基于间歇连接的车辆网络中设置排名的多重预缓存车辆选择方案
Youngju Nam1, Jaejeong Bang2, Hyunseok Choi1
1Research Institute for Computer and Information Communication, Chungbuk National University, Cheongju 28644, Republic of Korea.
Sensors (Basel, Switzerland)
|July 14, 2023
概括
由于路边单位 (RSU) 之间的差距,车辆网络面临着连接方面的挑战. 一个新的多重预缓存车辆选择 (MPVS) 方案通过选择最佳的车辆组来缓存和转发数据,从而改善这些间歇连接网络中的内容传输.
科学领域:
- 车辆通信网络 车辆通信网络
- 无线网络是无线网络.
- 移动计算 移动计算
背景情况:
- 车辆网络依赖路边单位 (RSU) 来传输内容,但部署的挑战会造成连接缺口 (中断区).
- 这些间歇连接的车辆网络由于内容大小和RSU之间的距离增加,导致下载延迟和流量开销增加.
- 这些网络的现有预缓存计划通常通过优先考虑排名最高的车辆来降低内容请求成功率和公平性.
研究的目的:
- 提出一种新的多重预缓存车辆选择 (MPVS) 方案,以高效地选择一组车辆,在车辆网络中断区域预缓存和中继内容.
- 解决以往方案在内容请求成功率和间歇连接车辆网络中的公平性方面的局限性.
主要方法:
- 开发了数值模型来确定预缓存的必要性和数量,并计算单个车辆可用的预缓存容量.
- 设计的MPVS可以计算所有可能的车辆套件进行预缓存,并根据可用的预缓存量对它们进行排名.
- 通过考虑设置排名和车辆通信开销,确定了最佳的内容预缓存车辆组.
- 建立了一个内容下载流程,使用在中断区域内选择的车辆组.
主要成果:
- 模拟结果表明,MPVS计划在各种环境和流动性模型中明显优于以前的代表性计划.
- 拟议的MPVS方案有效地管理在车辆网络中断区域的内容预缓存和转发.
- 在间歇连接的车辆网络中,MPVS提高了内容传递的效率.
结论:
- 与现有的方法相比,MPVS方案在间歇连接的车辆网络中提供了一个优越的解决方案,用于在间歇连接的车辆网络中传输内容.
- MPVS通过智能选择一组预缓存车辆来提高内容请求的成功率和公平性.
- 这种方法提供了一种可行的策略,以减轻车辆网络部署中具有挑战性的连接问题.
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