RA-PSM: a rate-aware power saving mechanism in multi-rate wireless LANs

Sangheon Pack; Seongman Min; Taewon Song; Wonjung Kim; Nakjung Choi; Hyunhee Park

doi:10.1007/s11276-015-1064-3

RA-PSM: a rate-aware power saving mechanism in multi-rate wireless LANs

Sangheon Pack, Seongman Min, Taewon Song, Wonjung Kim, Nakjung Choi, Hyunhee Park

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

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
Pages (from-to)	1767-1777
Number of pages	11
Journal	Wireless Networks
Volume	22
Issue number	6
DOIs	https://doi.org/10.1007/s11276-015-1064-3
Publication status	Published - 2016 Aug 1

Bibliographical note

Funding Information:
This research was supported in part by the MSIP (Ministry of Science, ICT&Future Planning), Korea, under the ITRC (Information Technology Research Center) support program (IITP-2015-H8501-15-1007) supervised by the IITP (Institute for Information & communications Technology Promotion) and in part by ICT R&D program of MSIP/IITP (2014-044-006-004, Next Generation WLAN System with High Efficient Performance).

Publisher Copyright:
© 2015, Springer Science+Business Media New York.

ASJC Scopus subject areas

Information Systems
Computer Networks and Communications
Electrical and Electronic Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1007/s11276-015-1064-3

Cite this

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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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AU - Choi, Nakjung

AU - Park, Hyunhee

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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.

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RA-PSM: a rate-aware power saving mechanism in multi-rate wireless LANs

Abstract

Bibliographical note

ASJC Scopus subject areas

UN SDGs

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