Cyber-Physical Scheduling for Predictable Reliability of Inter-Vehicle Communications
Cyber-Physical Scheduling for Predictable Reliability of Inter-Vehicle Communications
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DOI：
10.1109/tvt.2020.2968591
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发表时间：
2020-01
影响因子：
6.8
通讯作者：
Chuan Li;Hongwei Zhang;Tianyi Zhang;J. Rao;L. Wang;G. Yin
中科院分区：
文献类型：
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作者：
Chuan Li;Hongwei Zhang;Tianyi Zhang;J. Rao;L. Wang;G. Yin
车辆间通信的可预测可靠性是从单一车辆导向的安全和效率控制到网络化车辆控制的范式转变的基础。然而，在现有的车辆通信机制中缺乏可预测的干扰控制，使得它们不能确保可预测的通信可靠性。为了解决差距，我们提出了网络物理调度（CPS）的框架，利用干扰模型和解决的挑战，车辆的流动性和广播PRK为基础的调度。为了解决车辆的移动性，CPS利用车辆的物理位置来定义gesture干扰模型，gesture模型的几何近似，用于轻量级控制信令和有效的干扰关系估计，并且CPS利用车辆交通流的网络物理结构来有效地实例化和使用gesture模型。为了支持可预测的广播，CPS控制相同发送方的链路的gesture模型适配之间的交互，以确保在存在车辆移动性的情况下的可预测的广播可靠性。通过高保真ns-3和SUMO仿真的实验分析，我们观察到CPS实现了可预测的可靠性，同时实现了高吞吐量和低延迟的通信。据我们所知，CPS是第一种可现场部署的方法，可确保可预测的干扰控制，从而确保车辆间通信的可靠性。
Predictable reliability of inter-vehicle communications is a basis for the paradigm shift from single-vehicle-oriented safety and efficiency control to networked vehicle control. The lack of predictable interference control in existing vehicular communication mechanisms, however, makes them incapable of ensuring predictable communication reliability. To address the gap, we propose the Cyber-Physical Scheduling (CPS) framework that leverages the PRK interference model and addresses the challenges of vehicle mobility and broadcast to PRK-based scheduling. To address vehicle mobility, CPS leverages the physical locations of vehicles to define the gPRK interference model, a geometric approximation of the PRK model, for lightweight control signaling and effective interference relation estimation, and CPS leverages cyber-physical structures of vehicle traffic flows for effective instantiation and use of the gPRK model. To support predictable broadcast, CPS controls the interactions between gPRK model adaptations of the links of the same sender to ensure predictable broadcast reliability in the presence of vehicle mobility. Through experimental analysis with high-fidelity ns-3 and SUMO simulation, we observe that CPS enables predictable reliability while achieving high throughput and low delay in communication. To the best of our knowledge, CPS is the first field-deployable method that ensures predictable interference control and thus reliability in inter-vehicle communications.