naa a22 4500 510791751 CHVBK 20180411083322.0 cr unu---uuuuu 180411e20130801xx s 000 0 eng 10.1007/s11277-012-0914-x doi (NATIONALLICENCE)springer-10.1007/s11277-012-0914-x Lee Jae-Ho Department of Electronics and Electrical, Korea University, Seoul, Korea aut A Traffic-Aware Energy Efficient Scheme for WSN Employing an Adaptable Wakeup Period [Elektronische Daten] [Jae-Ho Lee] Recently, Wireless Sensor Networks (WSN) have come to require an energy efficiency and a guaranteed delivery delay time, on the contrary to traditional Medium Access Control (MAC) protocols that have mostly aimed for a high throughput. In order to satisfy these new significant requirements, many of the newer WSN MAC protocols employ duty cycled mechanism, in order to improve energy efficient techniques in the MAC layer. This duty cycled mechanism is oriented to the toggling of the transceiver's conditions composed of the wakeup and sleep states. However, regrettably, the channel conditions of a wireless network can be changed anytime according to the traffic congestion. If a high congestion is present, an insufficient wakeup period can cause the successful communication ratio to worsen. This can be a weakness in previous duty cycled mechanisms due to their lack of consideration for the network conditions. Therefore, we have devised and designed an efficient new scheme, the adaptable wakeup period, which can resolve this issue. We present analyses and the simulated results of our work, together with a comparison between the synchronous and asynchronous MAC protocols, using two types of analysis models that we suggest. Springer Science+Business Media New York, 2012 WSN nationallicence MAC nationallicence Duty cycle nationallicence Wireless Personal Communications Springer US; http://www.springer-ny.com 71/3(2013-08-01), 1879-1914 0929-6212 71:3<1879 2013 71 11277 https://doi.org/10.1007/s11277-012-0914-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11277-012-0914-x text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Lee Jae-Ho Department of Electronics and Electrical, Korea University, Seoul, Korea aut NATIONALLICENCE 773 0- Wireless Personal Communications Springer US; http://www.springer-ny.com 71/3(2013-08-01), 1879-1914 0929-6212 71:3<1879 2013 71 11277 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer