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.
| Original language | English |
|---|---|
| Journal | Wireless Networks |
| DOIs | |
| Publication status | Accepted/In press - 2015 Sep 9 |
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ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Computer Networks and Communications
- Information Systems
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RA-PSM : a rate-aware power saving mechanism in multi-rate wireless LANs. / Pack, Sangheon; Min, Seongman; Song, Taewon; Kim, Wonjung; Choi, Nakjung; Park, Hyunhee.
In: Wireless Networks, 09.09.2015.Research output: Contribution to journal › Article
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TY - JOUR
T1 - RA-PSM
T2 - a rate-aware power saving mechanism in multi-rate wireless LANs
AU - Pack, Sangheon
AU - Min, Seongman
AU - Song, Taewon
AU - Kim, Wonjung
AU - Choi, Nakjung
AU - Park, Hyunhee
PY - 2015/9/9
Y1 - 2015/9/9
N2 - 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.
AB - 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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U2 - 10.1007/s11276-015-1064-3
DO - 10.1007/s11276-015-1064-3
M3 - Article
AN - SCOPUS:84941347157
JO - Wireless Networks
JF - Wireless Networks
SN - 1022-0038
ER -