Assessing the Effectiveness of Channel Hopping in IEEE 802.15.4 TSCH Networks

Time slotted channel hopping is an enhanced access mechanism for IEEE 802.15.4 that improves many aspects of the original protocol, like determinism and power consumption. Besides preventing collisions, time slotting allows motes to stay asleep most time. In addition, achieves more stable communication, in terms packet losses transmission latency, spite wireless spectrum variations. this paper, specific effects latter are investigated from both qualitative quantitative points view. particular, a thorough experimental campaign was carried out on real devices, deployed environment performing realistic data exchanges, when they exposed different interference conditions, assess benefits it brings over case transmissions performed fixed channel. Experimental results confirm that, frequency kept repeatedly changing, communication quality sensibly less affected by co-located Wi-Fi infrastructures, which makes network behavior predictable hence intrinsically dependable