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arXiv 2011.11139cs.NIcs.SYeess.SY
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IoT--工业机器类型通信的MAC--第II部分:调度和数值结果

MAC for Machine Type Communications in Industrial IoT -- Part II: Scheduling and Numerical Results

Jie Gao, Mushu Li, Weihua Zhuang, Xuemin, Shen, Xu Li

摘要:

在本文的第二部分中,我们开发了一个集中式数据包传输调度方案,以配合第一部分中设计的协议,并完成我们的介质访问控制(MAC)设计,用于工业物联网中的机器类型通信。对于网络场景,考虑到严格的服务质量(QoS)要求和多样化的服务类型,关注每个设备的细粒度调度变得必要,但是对于大量设备来说过于复杂。为了应对这一挑战,我们提出了两个步骤的调度解决方案。首先,我们开发的设备分配算法的分析结果的基础上,从第一部分,当所提出的协议的参数。然后,我们训练一个深度神经网络,以协助确定的协议参数。两步方法确保了满足QoS要求所需的准确性和粒度,并避免了处理大量设备的过度复杂性。通过大量的仿真实验,证明了本文提出的MAC协议具有很高的性能,并将第一部分协议设计中的分布式协调和本部分的集中式调度相结合。例如,结果表明,所提出的MAC可以支持1000个设备下的聚合流量负载为3000包每秒与一个信道,并实现<0.5ms的平均延迟和<1%的平均冲突概率之间的50个高优先级的设备。

英文摘要:

In the second part of this paper, we develop a centralized packet transmission scheduling scheme to pair with the protocol designed in Part I and complete our medium access control (MAC) design for machine-type communications in the industrial internet of things. For the networking scenario, fine-grained scheduling that attends to each device becomes necessary, given stringent quality of service (QoS) requirements and diversified service types, but prohibitively complex for a large number of devices. To address this challenge, we propose a scheduling solution in two steps. First, we develop algorithms for device assignment based on the analytical results from Part I, when parameters of the proposed protocol are given. Then, we train a deep neural network for assisting in the determination of the protocol parameters. The two-step approach ensures the accuracy and granularity necessary for satisfying the QoS requirements and avoids excessive complexity from handling a large number of devices. Integrating the distributed coordination in the protocol design from Part I and the centralized scheduling from this part, the proposed MAC protocol achieves high performance, demonstrated through extensive simulations. For example, the results show that the proposed MAC can support 1000 devices under an aggregated traffic load of 3000 packets per second with a single channel and achieve <0.5ms average delay and <1% average collision probability among 50 high priority devices.

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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