New radio chips implement different physical layers, allowing firmware to change modulation, datarate and frequency dynamically. This technological development is an opportunity for industrial low-power wireless networks to offer even higher determinism, including latency predictability. This article introduces 6DYN, an extension to the IETF 6TiSCH standards-based protocol stack. In a 6DYN network, nodes switch physical layer dynamically on a link-by-link basis, in order to exploit the diversity offered by this new technology agility. To offer low latency and high network capacity, 6DYN uses heterogeneous slot durations: the length of a slot in the 6TiSCH schedule depends on the physical layer used. This article shows how reserved bits in 6TiSCH headers can be used to standardize 6DYN and details its implementation in OpenWSN, a reference implementation of 6TiSCH.

中文翻译：

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具有不同时隙持续时间的6TiSCH

新的无线电芯片实现了不同的物理层，从而允许固件动态更改调制，数据速率和频率。这项技术发展为工业低功耗无线网络提供了更高的确定性（包括等待时间可预测性）的机会。本文介绍6DYN，这是对IETF 6TiSCH基于标准的协议栈的扩展。在6DYN网络中，节点在逐个链接的基础上动态切换物理层，以便利用这种新技术敏捷性提供的多样性。为了提供低延迟和高网络容量，6DYN使用异构时隙持续时间：6TiSCH调度中的时隙长度取决于所使用的物理层。本文介绍了如何使用6TiSCH标头中的保留位来标准化6DYN，并详细介绍了其在OpenWSN中的实现，