论文标题
基于DSRC基本安全消息的优先级基于危险的距离
Prioritization of Basic Safety Message in DSRC Based on Distance to Danger
论文作者
论文摘要
许多各方声称在智能运输系统（ITS）中专门的短期通信（DSRC）的技术意义，以促进运输安全。这项关键车辆到全能（V2X）标准的主要挑战是网络拥塞的高几率。此外，根据V2X网络在关键参数（例如车辆密度和速度）上的固有动态，DSRC系统的网络行为通常非常复杂，可以分析。此外，美国联邦通信委员会（US FCC）最近宣布了“ 5.9 GHz乐队改革”，该改革将DSRC的专用带宽从75 MHz降低到10 MHz。从这些动机中，“减轻” DSRC网络的网络负载的必要性对于保持与安全相关的操作而不绩效恶化至关重要。为此，本文提出了一项协议，该协议优先根据车辆遇到的危险水平，将基本安全消息（BSM）传输到车辆上。所提出的协议使用危险源和车辆之间的距离作为度量，以确定传输的优先级。我们的结果表明，该协议优先考虑危险车辆的传输机会，因此在关键指标方面会导致更高的性能 - 即平均延迟，吞吐量和受众间时间（$ \ Mathsf {irt} $）。
Many parties claim the technical significance of Dedicated Short-Range Communications (DSRC) in intelligent transportation system (ITS) for promotion of transportation safety. The main challenge in this key vehicle-to-everything (V2X) standard is high odds of network congestion. Furthermore, in accordance with a V2X network being inherently dynamic in key parameters such as vehicle density and velocity, the networking behavior of a DSRC system is usually highly complicated to analyze. In addition, the United States Federal Communications Commission (US FCC) recently announced the "5.9 GHz band reform," which reduced the dedicated bandwidth for DSRC to 10 MHz from 75 MHz. Motivated from these, the necessity of "lightening" the networking load of a DSRC network has become essential to keep safety-related operations without performance deterioration. To this end, this paper proposes a protocol that prioritizes transmission of a basic safety message (BSM) at a vehicle according to the level of danger that the vehicle experiences. The proposed protocol uses the distance between a danger source and a vehicle as the metric to determine the priority for transmission. Our results show that this protocol prioritizes the transmission opportunity to dangerous vehicles, and hence results in higher performance in terms of key metrics--i.e., average delay, throughput, and inter-reception time ($\mathsf{IRT}$).
