Distributed Successive Packet Scheduling for Multi-Channel Real-Time Wireless Networks
Distributed Successive Packet Scheduling for Multi-Channel Real-Time Wireless Networks
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DOI：
10.1109/rtcsa55878.2022.00014
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发表时间：
2022-08
期刊：
影响因子：
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通讯作者：
Dawei Shen;Tianyu Zhang;Jiachen Wang;Qingxu Deng;Song Han;X. Hu
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文献类型：
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作者：
Dawei Shen;Tianyu Zhang;Jiachen Wang;Qingxu Deng;Song Han;X. Hu
随着工业物联网(IIoT)应用的快速增长，实时无线网络(RTWN)在为这些应用提供实时、可靠、安全的通信服务方面发挥着越来越重要的作用。RTWN管理中的一个关键挑战是确保实时服务质量(Qos)，特别是在存在意外的外部(即，应用侧)和内部(即，网络侧)干扰的情况下。本文提出了一种新的框架DS-PAS，用于在数据链路层以分布式和动态的方式确定多信道多跳RTWN的分组传输调度。DS-PAS能够(I)处理外部干扰，(Ii)支持空间重用，(Iii)满足所有关键任务的最后期限，以及(Iv)最小化丢弃非关键分组的数量。为了避免在分布式框架中使用不一致的信息时发生传输冲突，DS-PAS在数据链路层协议和算法设计中都结合了几个关键的改进，使得单个节点可以仅使用本地干扰信息来建立在线调度。基于试验台实现和仿真的广泛评估验证了DS-PAS设计的正确性，并与现有技术相比证明了其有效性。
With the rapid growth of industrial Internet of Things (IIoT) applications, real-time wireless networks (RTWNs) are playing an increasingly important role in providing realtime, reliable, and secure communication services for these applications. A key challenge in RTWN management is to ensure real-time Quality of Services (QoS), especially in the presence of unexpected external (i.e., application-side) and internal (i.e., network-side) disturbances. This paper presents a novel framework, DS-PaS, to determine the packet transmission schedule for multi-channel multi-hop RTWNs at the data link layer in a distributed and dynamic fashion. DS-PaS is able to (i) handle external disturbances, (ii) support spatial reuse, (iii) meet deadlines of all critical tasks, and (iv) minimize the number of dropped non-critical packets. To avoid transmission collisions when using inconsistent information in a distributed framework, DS-PaS incorporates several key advances in both the data-link layer protocol and algorithm design so that individual nodes can build on-line schedules with only local interference information. Extensive evaluation based on both testbed implementation and simulation validates the correctness of the DS-PaS design and demonstrates its effectiveness compared to the state of the art.