Abstract
Wireless Sensor Networks (WSNs) are witnessing a momentum spread especially with the growth of the Internet of Things (IoT) paradigm. Indeed, WSNs are considered as the main enabling infrastructure for IoT networks. Nowadays, the emerging WSNs applications require not only long network lifespan but also considerably high data rate. Consequently, conceiving Multichannel MAC protocols that save the scarceenergy budget of sensor nodes while providing high network throughput is crucial for the emerging WSNs applications. In this paper, a thorough review of recent multichannel MAC protocols is provided along with a classification framework to deeply understand the design aspects for each protocol.
Highlights
N OWADAYS, Wireless Sensor Networks (WSNs) are emerging in various new applications related to novel areas such as smart cities, smart healthcare, and smart homes
Energy efficiency was the main challenge that should be carefully considered in the design of WSN protocols since sensors are powered with limited energy budget and the applications’ requirements were not demanding high throughput or timely data delivery [1] [2]
We describe an important design aspect that greatly impacts the performance of a multichannel medium access control (MAC) protocol, which is how frequent a node is assigned to a given channel
Summary
Multichannel communication scheme can be applied in the previously mentioned application areas (e.g smart cities) as a solution to enhance the performance of the applications especially in terms of throughout and energy efficiency. If air-drones use multichannel communication with the control center, they have the possibility to choose the best channel between the available channels. The multichannel communication scheme can be applied in Wireless Body Area Networks (WBANs) such that when the current transmission channel suffers an interference or collisions, the current channel can be changed to a more reliable one. Regarding the smart home area, multichannel communication can greatly affect the performance of smart home applications by assigning different frequencies to different utilities allowing them to transfer data simultaneously without collisions or interference [9].
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