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High-reliability scheduling in deterministic wireless multi-hop networks

机译:确定性无线多跳网络中的高可靠性调度

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The industrial Internet of Things (IoT) relies on multi-hop radio paths. Synchronized nodes follow a Frequency-Time Division Multiple Access (FTDMA) schedule, but even using channel-hopping to mitigate interference, the radio links suffer packet losses. Resource allocation algorithms must consider the requirements of the applications in terms of delivery and allocate extra resource to compensate for anticipated losses. We propose a hop-by-hop allocation mechanism that extends the Traffic-Aware Scheduling Algorithm (TASA) by enabling retransmissions. We give each flow on the network the possibility to satisfy its applicative end-to-end delivery constraint. We keep the amount of resource allocated for retransmissions low, and balance the allocations on the relay nodes. By means of simulations, we show the gain in terms of reliability, and the cost in terms of number of allocations.
机译:工业物联网(IoT)依赖于多跳无线电路径。同步节点遵循频分时分多址(FTDMA)计划,但是即使使用跳频来减轻干扰,无线链路也会遭受数据包丢失。资源分配算法必须在交付方面考虑应用程序的需求,并分配额外的资源以补偿预期的损失。我们提出了一种逐跳分配机制,该机制通过启用重传来扩展流量感知调度算法(TASA)。我们给网络上的每个流提供满足其适用的端到端传递约束的可能性。我们将分配给重传的资源数量保持在较低水平,并平衡中继节点上的分配。通过仿真,我们显示了可靠性方面的收益,以及分配数量方面的成本。

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