An Enhanced Power Save Mode for IEEE 802.11 Station in Ad Hoc Networks

Yeonkwon Jeong, Jongchul Park, Joongsoo Ma, Daeyoung Kim

Abstract: The IEEE 802.11 standard requires that a beacon station has to stay in awake after generating a beacon frame to serve probe request. This requirement make a reason to consume valuable power of beacon station even though there are no frame exchanges between stations or there exists only one station in the ad hoc network. This paper proposes an ePSM(Enhanced Power Save Mode) to reduce effectively the power consumption of beacon station in stand-by state. We also develop a power consumption model and show that the ePSM can save 73% energy at beacon station per a BI(Beacon Interval) with measurement results.