Wireless Smart Ubiquitous Network by CSL-based Low Power MAC Protocol

Abstract

The wireless smart ubiquitous network (Wi-SUN) has been attracting much attention as one of the candidates of wireless sensor networks (WSNs) for the Internet-of-Things (IoT). In considering that the Wi-SUN is applied to the IoT system in the environment where the power supply cannot be easily secured, such as structure monitoring systems, it is imperative to establish the technology enabling the Wi-SUN system to operate with only a battery for a prolonged time. The key enabling technology for the low operation in the Wi-SUN system is a low-power media access control (MAC) protocol. The coordinated sampled listening (CSL) protocol is one of the standardized low-power MAC protocol. In this paper, we demonstrate the feasibility of the CSL-based protocol and verify its detailed characteristics by implementing the CSL-based protocol into the actual Wi-SUN dongles to construct the CSL-based low-power networks. The experimental and computer simulation results demonstrate the feasibility and reliability of the CSL-based protocol.