The Time Slotted Channel Hopping (TSCH) mode of the standard IEEE 802.15.4 provides Medium Access Control (MAC) for most Low power and Lossy Network (LLN) applications in the Internet of Things (IoT). TSCH uses a synchronized schedule with frequency diversity to allow flexible, reliable and resilient communication. The standard defines an association algorithm to allow nodes to autonomously form the network. The time required to create the network can be long, which consumes valuable energy given that nodes keep their radios on when trying to associate. In this letter, we propose a theoretical model to estimate the time required for a node to associate to one single synchronizer. This model extends and complements earlier mathematical models. Its results comply with outcomes from extensive simulation studies. This makes the proposed model a valuable tool to further investigate the time needed to form TSCH-based LLN networks.

中文翻译：

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IEEE 802.15.4 TSCH 网络的理论关联时间模型


标准 IEEE 802.15.4 的时隙信道跳频 (TSCH) 模式为物联网 (IoT) 中的大多数低功耗和有损网络 (LLN) 应用提供介质访问控制 (MAC)。 TSCH 使用具有频率分集的同步调度来实现灵活、可靠和有弹性的通信。该标准定义了一种关联算法，允许节点自主形成网络。创建网络所需的时间可能很长，考虑到节点在尝试关联时保持无线电开启，这会消耗宝贵的能量。在这封信中，我们提出了一种理论模型来估计节点关联到单个同步器所需的时间。该模型扩展并补充了早期的数学模型。其结果符合广泛的模拟研究的结果。这使得所提出的模型成为进一步研究形成基于 TSCH 的 LLN 网络所需时间的宝贵工具。