论文标题
高级多通道操作下的车辆云中的CUDA加速应用程序调度
CUDA-Accelerated Application Scheduling in Vehicular Clouds Under Advanced Multichannel Operations in WAVE
论文作者
论文摘要
本文介绍了一种新型的高级活动感知（AAA）方案，可根据IEEE 1609.4无线访问车辆环境（WAVE）优化和改善多渠道操作。所提出的方案依赖于车辆安全负载的意识来动态找到用于在服务通道间隔（SCHI）和控制通道间隔（CCHI）之间切换的最佳设置。 SCHI用于非关键应用（例如信息娱乐），而CCHI则用于关键应用（例如，与安全相关）。我们在不牺牲其他应用要求（例如延迟和带宽）的情况下最大化通道利用率。我们的方案已实施和评估网络模拟器3（NS3）。我们保证默认同步间隔（SI），就像使用NS3的车辆云（VC）负载和VANET设置进行测试时，在车辆临时网络（VANETS）中实施的默认同步间隔（SI）。我们还评估了基于马尔可夫决策过程（MDP）方案和快速贪婪的启发式方法，以优化IEEE 1609.4的车辆任务放置问题，以及提议的AAA计划的机会主义V2I版本。我们的解决方案通过考虑分布式虚拟化VCS资源和车辆袋（bot）位置的总体利用来依次和并行，从而为风险投资提供了奖励。我们提出了模拟指标，证明我们提出的解决方案可显着改善吞吐量，并减少用于非安全应用程序上载的数据包的平均延迟，同时维持与安全相关应用程序类似于IEEE 1609.4标准的可靠通信（通过CCHI）。
This paper presents a novel Advanced Activity-Aware (AAA) scheme to optimize and improve Multi-Channel Operations based on the IEEE 1609.4 standard in wireless access vehicular environments (WAVE). The proposed scheme relies on the awareness of the vehicular safety load to dynamically find an optimal setup for switching between service channel intervals (SCHI) and control channel intervals (CCHI). SCHI are chosen for non-critical applications (e.g. infotainment), while CCHI are utilized for critical applications (e.g. safety-related). We maximize the channel utilization without sacrificing other application requirements such as latency and bandwidth. Our scheme is implemented and evaluated network simulator-3 (NS3). We guarantee the default Synchronization Interval (SI), like implemented by the standard in vehicular ad hoc networks (VANETs), when tested on real-time simulations of vehicular cloud (VC) load and VANET setups using NS3. We also evaluate a Markov Decision Process (MDP) based scheme and a fast greedy heuristic to optimize the problem of vehicular task placement with both IEEE 1609.4 and an opportunistic V2I version of the proposed AAA scheme. Our solution offers the reward of the VC by taking into account the overall utilization of the distributed virtualized VCs resources and vehicular bag-of-tasks (BOTs) placements both sequentially and in parallel. We present the simulation metrics proving that our proposed solution significantly improve the throughput and decreases the average delay of uploaded packets used for non-safety applications, while maintaining reliable communication (via CCHI) for safety-related applications similar to the IEEE 1609.4 standard.
