RA-PSM: a rate-aware power saving mechanism in multi-rate wireless LANs
- Authors
- Pack, Sangheon; Min, Seongman; Song, Taewon; Kim, Wonjung; Choi, Nakjung; Park, Hyunhee
- Issue Date
- 8월-2016
- Publisher
- SPRINGER
- Citation
- WIRELESS NETWORKS, v.22, no.6, pp.1767 - 1777
- Indexed
- SCIE
SCOPUS
- Journal Title
- WIRELESS NETWORKS
- Volume
- 22
- Number
- 6
- Start Page
- 1767
- End Page
- 1777
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/87915
- DOI
- 10.1007/s11276-015-1064-3
- ISSN
- 1022-0038
- Abstract
- Improving energy efficiency is one of the most important issues in wireless local area networks (WLANs) and a power saving mechanism (PSM) has been proposed in IEEE 802.11 WLANs. However, the conventional PSMs do not consider multi-rate transmissions and thus the waiting time for retrieving buffered frames from the access point can be unnecessarily long and more energy can be consumed. In this paper, we propose a rate-aware power saving mechanism (RA-PSM) in multi-rate WLANs. In RA-PSM, a station sets its contention window size inversely proportional to the transmission rate and thus a station with higher transmission rate can request the buffered frames at the access point with higher priority. As a result, the overall channel waiting time can be reduced and the energy consumption can be saved accordingly. Analytical and simulation results demonstrate that RA-PSM can reduce the average channel waiting time and the energy consumption by up to 77 and 40.3 %, respectively, compared with the conventional IEEE 802.11 PSM.
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Collections - College of Engineering > School of Electrical Engineering > 1. Journal Articles
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