Ensuring applications' traffic isolation using IEEE 802.15.4e TSCH through SDWSN slicing.

IEEE 802.15.4e Time Slotted Channel Hopping (TSCH) enables network slicing and brings efficiency to the Software-Defined Wireless Sensor Networks (SDWSNs), which contribute to the Internet of Things (IoT) deployment. However, dealing with the different applications' traffic as a single flow and accommodating them in the same slice could increase the congestion and decrease the Quality of Service (QoS) level. In this paper, the Application Traffic Isolation (ATI) approach is presented. It is implemented using the IT-SDN framework on top of TSCH. The performance evaluation considers up to four applications running simultaneously, comparing the proposed approach to another one that considers the whole applications' traffic as a single flow. Simulation results showed that ATI improved both the delivery rate and delay in the application layer. However, it led to more energy consumption.