Student t-test for Scalable Topology for TSCH based IIoT Networks
Seema Kharb, Anita Singhrova · International Journal of Control and Automation · 2018
The Industrial Internet of Thing (IIoT) is a logical extension of automation and connectivity, that has evolved as an integral part of an industrial domain known as machine to machine communication.The IIoT networks have stringent requirements of traffic differentiation, reliability, low power consumption, scalability and timeliness for its various applications.Time Slotted Channel Hopping (TSCH) is the technology that provides ultralow power and reliable communication to IIoT networks.Since, IIoT involves large number of devices, thus scalability of the network is the key concern nowadays.Accordingly, a scalable topology is to be selected for TSCH based IIoT networks.This work identifies the major topologies being used in industrial networks.Based on their limitations and key features, a two-tier topology is proposed for handling traffic differentiation and scalability in TSCH environment.The simulations for linear, star, mesh and proposed two-tier is carried out using 6TiSCH simulator.The proposed two-tier showed better results for large number of connected nodes and transmission cells, i.e., dense networks.The results were further verified by the method of hypothesis testing.