arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1808.06015cs.ITcs.GTmath.IT
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利用边缘计算实现超可靠、低延迟的车对基础设施无线通信

Ultra Reliable, Low Latency Vehicle-to-Infrastructure Wireless Communications with Edge Computing

Md Mostofa Kamal Tareq, Omid Semiari, Mohsen Amini Salehi, Walid Saad

摘要:

超可靠、低延迟的车辆到基础设施(V2I)通信是未来智能城市中自动驾驶车辆(AV)无缝运行的关键要求。为此,具有边缘计算能力的蜂窝小型基站(SBS)可以通过本地处理来自AV的请求任务来减少端到端(E2E)服务延迟,而无需将任务转发到远程云服务器。然而,由于SBS的计算能力有限,再加上无线带宽资源的稀缺性,最小化AV的E2E延迟并实现可靠的V2I网络是具有挑战性的。本文提出了一种新的算法来联合优化AV到SBS的关联和带宽分配,以最大限度地提高V2I网络的可靠性。通过使用来自劳动力匹配市场的工具,所提出的框架可以有效地执行AV到SBS的分布式关联,同时考虑AV的延迟需求以及SBS的有限计算和带宽资源。此外,所提出的算法的收敛性的AV和SBS之间的核心分配被证明和它的能力,以捕获相互依赖的计算和传输延迟的AV在V2I网络的特点。仿真结果表明,通过优化E2E延迟,该算法大大优于传统的小区关联方案,在服务可靠性和延迟。

英文摘要:

Ultra reliable, low latency vehicle-to-infrastructure (V2I) communications is a key requirement for seamless operation of autonomous vehicles (AVs) in future smart cities. To this end, cellular small base stations (SBSs) with edge computing capabilities can reduce the end-to-end (E2E) service delay by processing requested tasks from AVs locally, without forwarding the tasks to a remote cloud server. Nonetheless, due to the limited computational capabilities of the SBSs, coupled with the scarcity of the wireless bandwidth resources, minimizing the E2E latency for AVs and achieving a reliable V2I network is challenging. In this paper, a novel algorithm is proposed to jointly optimize AVs-to-SBSs association and bandwidth allocation to maximize the reliability of the V2I network. By using tools from labor matching markets, the proposed framework can effectively perform distributed association of AVs to SBSs, while accounting for the latency needs of AVs as well as the limited computational and bandwidth resources of SBSs. Moreover, the convergence of the proposed algorithm to a core allocation between AVs and SBSs is proved and its ability to capture interdependent computational and transmission latencies for AVs in a V2I network is characterized. Simulation results show that by optimizing the E2E latency, the proposed algorithm substantially outperforms conventional cell association schemes, in terms of service reliability and latency.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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