Dynamic Channel Selection for Real-Time Safety Message Communication in Vehicular Networks
Dynamic Channel Selection for Real-Time Safety Message Communication in Vehicular Networks
复制标题
DOI：
10.1109/rtss.2018.00016
复制
发表时间：
2018-12
期刊：
影响因子：
--
通讯作者：
Yunhao Bai;Kuangyu Zheng;Zejiang Wang;Xiaorui Wang;Junmin Wang
中科院分区：
文献类型：
--
作者：
Yunhao Bai;Kuangyu Zheng;Zejiang Wang;Xiaorui Wang;Junmin Wang
保证安全信息的实时传递是车对车（V2 V）通信的重要研究问题。遗憾的是，现有的工作仅依赖于一个或两个预先选择的控制信道用于安全消息通信，这可能导致差的分组传递和潜在的事故时，车辆密度高。如果当控制信道具有严重争用时，所有可用信道可以被动态地利用，则安全消息可以具有更好的机会来满足它们的实时截止期限。在本文中，我们提出了MC-Safe，这是一个多通道V2 V通信框架，可以监控所有可用通道，并动态选择最佳通道进行安全消息传输。MC-Safe具有一种新颖的信道协商方案，允许潜在事故中涉及的所有车辆以分布式方式协同工作，以识别满足延迟要求的通信信道。我们的评估结果在模拟和硬件测试平台上与缩放汽车显示，MC-Safe优于现有的单通道解决方案和其他精心设计的多通道基线，具有12.31%的最后期限错过率和8.21%的平均更高的数据包交付率。
Ensuring the real-time delivery of safety messages is an important research problem for Vehicle to Vehicle (V2V) communication. Unfortunately, existing work relies only on one or two pre-selected control channels for safety message communication, which can result in poor packet delivery and potential accident when the vehicle density is high. If all the available channels can be dynamically utilized when the control channel is having severe contention, safety messages can have a much better chance to meet their real-time deadlines. In this paper, we propose MC-Safe, a multi-channel V2V communication framework that monitors all the available channels and dynamically selects the best one for safety message transmission. MC-Safe features a novel channel negotiation scheme that allows all the vehicles involved in a potential accident to work collaboratively, in a distributed manner, for identifying a communication channel that meets the delay requirement. Our evaluation results both in simulation and on a hardware testbed with scaled cars show that MC-Safe outperforms existing single-channel solutions and other well-designed multi-channel baselines by having a 12.31% lower deadline miss ratio and an 8.21% higher packet delivery ratio on average.