Energy Efficient Sleep/Wake-up Techniques for IOT: A survey

Energy efficiency is a vital factor that is contributing in the implementing of IOT, since IOT devices are powered by batteries or energy harvesting sources, thus it's very important to extend the lifetime of the overall network. This can be achieved using energy efficient techniques which have sorted into five types regarding the ISO model. One of them is the sleep/wakeup schemes which are considered in this paper. Duty-cycling, wake-up radios, and topology control were discussed and some of the newest works have been reviewed. However, every technique has its own limitations and advantages. This paper also determines some of the open research areas that companies between energy efficiency and some new technologies, standards or network and application types.