GoMacH: A Traffic Adaptive Multi-channel MAC Protocol for IoT

The diversity of IoT applications implies the requirement of reliable yet efficient MAC solutions for supporting transmissions for various traffic patterns. In this paper, we propose GoMacH, an efficient MAC protocol that provides high reliability and throughput for handling various traffic loads in IoT. GoMacH seamlessly integrates several outstanding techniques. It adopts the phase-lock scheme to achieve low-power, duty-cycled communication. It also utilizes a dynamic slots allocation scheme for providing accurate and instantaneous throughput boost. Furthermore, like in TSCH, GoMacH spreads its communications onto IEEE 802.15.4's 16 channels, leading to high reliability. GoMacH has been implemented in open source on RIOT OS, and has also been seamlessly integrated into IETF's 6LoWPAN/RPL/UDP stack. Experimental results on SAMR21-xpro test-beds verify the practicality of GoMacH and its capabilities for consistently providing high throughput, high delivery ratio, and low radio duty-cycle.