为自动驾驶汽车设计通用任务卸载框架,提升计算效率与服务质量。
A Generic Service-Oriented Function Offloading Framework for Connected Automated Vehicles
- 基于车辆位置决定任务本地或远程处理,灵活适配不同场景。
- 在仿真与真实场景中均保障轨迹规划QoS,显著提升计算效率。
- 适合车联网、边缘计算等智能交通系统研究者参考。
功能卸载是解决联网自动驾驶车辆(CAVs)或其他自主机器人计算能力与能量限制的有前景方案,通过将计算任务以分布式服务形式在本地和远程计算设备间分担。本文提出一种通用函数卸载框架,可适用于任意计算任务集,尤其聚焦自动驾驶。为保证灵活性,该框架支持多种卸载决策算法和质量服务(QoS)要求,可根据不同场景或CAV目标进行调整。针对可应用性,提出一种高效的基于位置的卸载方法,决策依据为CAV的位置。将该框架应用于面向服务的轨迹规划用例,将CAV的轨迹规划任务卸载至多接入边缘计算(MEC)服务器。评估在仿真与真实应用中进行,结果表明该框架能有效保障轨迹规划的QoS,同时提升CAV的计算效率。仿真还显示其对多个CAV并发卸载请求的适应性。
原文摘要 · Abstract (English)
Function offloading is a promising solution to address limitations concerning computational capacity and available energy of Connected Automated Vehicles~(CAVs) or other autonomous robots by distributing computational tasks between local and remote computing devices in form of distributed services. This paper presents a generic function offloading framework that can be used to offload an arbitrary set of computational tasks with a focus on autonomous driving. To provide flexibility, the function offloading framework is designed to incorporate different offloading decision making algorithms and quality of service~(QoS) requirements that can be adjusted to different scenarios or the objectives of the CAVs. With a focus on the applicability, we propose an efficient location-based approach, where the decision whether tasks are processed locally or remotely depends on the location of the CAV. We apply the proposed framework on the use case of service-oriented trajectory planning, where we offload the trajectory planning task of CAVs to a Multi-Access Edge Computing~(MEC) server. The evaluation is conducted in both simulation and real-world application. It demonstrates the potential of the function offloading framework to guarantee the QoS for trajectory planning while improving the computational efficiency of the CAVs. Moreover, the simulation results also show the adaptability of the framework to diverse scenarios involving simultaneous offloading requests from multiple CAVs.
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