| Summary: | 碩士 === 淡江大學 === 資訊工程學系碩士班 === 104 === The Internet of Things (IoTs) has obtained much attention recent years. The internet of things (IoTs) is the internetworking of physical devices, vehicles, buildings and other items—embedded with electronics, software, sensors, actuators, and network connectivity that enable these objects to collect and exchange data. IoTs is already used in many application domains, ranging from traditional environmental monitoring and location/tracking applications to industrial and healthcare applications. ZigBee is an IEEE 802.15.4-based specification for a suite of high-level communication protocols used to create personal area networks with small, low-power digital radios It is follow with breathless interest because of its energy saving and convenient networking. On February 6, the IEEE Standards Association Board approved the IEEE 802.15.4e MAC Enhancement Standard document for existing standard 802.15.4. TSCH is one of the access behavior modes defined in the IEEE 802.15.4e standard. It combines time slotted access with multi-channel and channel hopping capabilities, providing predictable latency, high network capacity, and high communication reliability. But TSCH doesn’t provide a reliable mechanism to avoiding the packet collision. The packet collision will
cause the network throughput reduction and the Average End-to-End addition. So in this paper, we will approve a mechanism to solving the problem. We evaluate its performance, through analysis and simulation, in terms of the network throughput and the Average End-to-End delay. We found that the mechanism will void the packet collision, so that it can raise the network throughput and reduce the Average End-to-End delay.
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