• 6TiSCH
• COAP
• Congestion Control
• IIOT
• IOT

The Internet of Things (IoT) is one of the most important transformations of the digital age, a pervasive development of small devices and sensors that allows endless possibilities. Those kind of sensors, are resource constrained devices, both from the computational and from the energy consumption point of view. These nodes are arranged in a certain topology, creating a network where they communicate, appearing as an IPv6 node and where they may exchange messages through an application layer protocol like HTTP or CoAP. Since CoAP operates on top of the User Datagram Protocol (UDP), which does not implement any congestion control mechanism, specific congestion control policies implemented in CoAP have been proposed and analysed. However the classical IOT does not ensure high level or reliabiliy end low latency. For thir reason the Industrial Internet of Things (IIOT), an evolution of classical IoT designed for industrial processes, that requires reliable and timed communication has been designed. To fulfil these requirements and to integrate wireless industrial applications into the existing IPv6 infrastructure, the IETF is currently working on the 6TiSCH Architecture. The 6TiSCH is an architecture that aims at defining a set of standard protocols on top of the IEEE 802.15.4 Time Slotted Channel Hooping (TSCH) Medium Access Control (MAC) protocol to guarantee high reliability and bounded latency in communication in a wireless network. The study presented in this thesis aim to evaluate the interplay between CoAP congestion controls algorithm and 6TiSCH in an Industrial Internet of Things (IIoT) scenario where high level of reilability and latency are required.