Power Management Techniques in Popular Operating Systems for IoT Devices

摘要

This paper investigates different operating systems recently adopted for various IoT applications from an energy perspective which is the main challenge in these applications. The whole IoT communication stack has been dedicated to meet this challenge but lesser attention has been paid towards the design of an energy efficient operating system. The reason is that the energy management is a hardware support feature which was not available in legacy hardware. The introduction of low power modes in recent hardware designs also necessitates the incorporation of energy management at the operating system level. We have classified popular IoT operating systems on the basis of three different energy conservation techniques i.e. idle CPU management, sleep modes and tick suppression. This work will be helpful in choosing the appropriate operating system for the specific IoT application. In the end, we have evaluated tick suppression as a potential energy conservation technique which is being deployed in some advanced operating systems for IoT devices.