Power-Saving Method of Wireless Stations Based on Adaptive Control of Bidirectional Burst Transmission in Wireless LANs

Kohei OMORI; Yosuke TANIGAWA; Hideki TODE

doi:10.1587/transcom.2016EBT0003

Power-Saving Method of Wireless Stations Based on Adaptive Control of Bidirectional Burst Transmission in Wireless LANs

Kohei OMORI, Yosuke TANIGAWA, Hideki TODE

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This paper addresses power saving for STAs (Wireless Stations) in WLANs (Wireless LANs). Mobile devices are increasingly used in situations in which they access WLANs. However, mobile devices consume large amounts of power when they communicate through a WLAN, and this shortens their battery lifetime. IEEE 802.11 specifies PSM (Power-Saving Mode) as the power-saving method for standard WLANs. However, the sleep conditions specified by PSM for STAs are not optimal in terms of power saving, except when the number of STAs is small, and this increases packet transfer delay. In this paper, we propose a power-saving method in which STAs reduce power consumption by sleeping for a period specified by the NAV (Network Allocation Vector) duration, which is set by an RTS/CTS handshake, and the duration of the NAV is extended by bidirectional burst transmission. To suppress the transfer delay caused by the bidirectional burst transmission, an AP (Access Point) manages the transmission deadline of each downlink packet on the basis of its acceptable value of delay and adapts the number of packets transferred in the bidirectional burst transmission. Although another existing method also uses the NAV duration to manage STA sleeping, the bidirectional burst transmission can only be initiated by the STAs themselves and the NAV is of an extremely limited duration. On the other hand, the proposed method specifies generalized bidirectional burst transmission without the limitations of the transmission initiator and the burst length within acceptable packet transfer delay. Moreover, we investigate the combination of the proposed method with PSM in order to improve the performance in situations in which the number of STAs is small by taking advantage of the combined properties of PSM and the proposed method. The evaluation results demonstrate that these proposed methods can reduce the power consumption of wireless stations and suppress packet transfer delay.

Publication: IEICE TRANSACTIONS on Communications Vol.E100-B No.6 pp.986-996

Publication Date: 2017/06/01

Publicized: 2016/12/20

Online ISSN: 1745-1345

DOI: 10.1587/transcom.2016EBT0003

Type of Manuscript: PAPER

Category: Network

Authors

Kohei OMORI
  Osaka Prefecture University
Yosuke TANIGAWA
  Osaka Prefecture University
Hideki TODE
  Osaka Prefecture University

Keyword

power saving of wireless LAN stations, RTS/CTS handshake, bidirectional burst transmission

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Kohei OMORI, Yosuke TANIGAWA, Hideki TODE, "Power-Saving Method of Wireless Stations Based on Adaptive Control of Bidirectional Burst Transmission in Wireless LANs" in IEICE TRANSACTIONS on Communications, vol. E100-B, no. 6, pp. 986-996, June 2017, doi: 10.1587/transcom.2016EBT0003.
Abstract: This paper addresses power saving for STAs (Wireless Stations) in WLANs (Wireless LANs). Mobile devices are increasingly used in situations in which they access WLANs. However, mobile devices consume large amounts of power when they communicate through a WLAN, and this shortens their battery lifetime. IEEE 802.11 specifies PSM (Power-Saving Mode) as the power-saving method for standard WLANs. However, the sleep conditions specified by PSM for STAs are not optimal in terms of power saving, except when the number of STAs is small, and this increases packet transfer delay. In this paper, we propose a power-saving method in which STAs reduce power consumption by sleeping for a period specified by the NAV (Network Allocation Vector) duration, which is set by an RTS/CTS handshake, and the duration of the NAV is extended by bidirectional burst transmission. To suppress the transfer delay caused by the bidirectional burst transmission, an AP (Access Point) manages the transmission deadline of each downlink packet on the basis of its acceptable value of delay and adapts the number of packets transferred in the bidirectional burst transmission. Although another existing method also uses the NAV duration to manage STA sleeping, the bidirectional burst transmission can only be initiated by the STAs themselves and the NAV is of an extremely limited duration. On the other hand, the proposed method specifies generalized bidirectional burst transmission without the limitations of the transmission initiator and the burst length within acceptable packet transfer delay. Moreover, we investigate the combination of the proposed method with PSM in order to improve the performance in situations in which the number of STAs is small by taking advantage of the combined properties of PSM and the proposed method. The evaluation results demonstrate that these proposed methods can reduce the power consumption of wireless stations and suppress packet transfer delay.
URL: https://globals.ieice.org/en_transactions/communications/10.1587/transcom.2016EBT0003/_p

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@ARTICLE{e100-b_6_986,
author={Kohei OMORI, Yosuke TANIGAWA, Hideki TODE, },
journal={IEICE TRANSACTIONS on Communications},
title={Power-Saving Method of Wireless Stations Based on Adaptive Control of Bidirectional Burst Transmission in Wireless LANs},
year={2017},
volume={E100-B},
number={6},
pages={986-996},
abstract={This paper addresses power saving for STAs (Wireless Stations) in WLANs (Wireless LANs). Mobile devices are increasingly used in situations in which they access WLANs. However, mobile devices consume large amounts of power when they communicate through a WLAN, and this shortens their battery lifetime. IEEE 802.11 specifies PSM (Power-Saving Mode) as the power-saving method for standard WLANs. However, the sleep conditions specified by PSM for STAs are not optimal in terms of power saving, except when the number of STAs is small, and this increases packet transfer delay. In this paper, we propose a power-saving method in which STAs reduce power consumption by sleeping for a period specified by the NAV (Network Allocation Vector) duration, which is set by an RTS/CTS handshake, and the duration of the NAV is extended by bidirectional burst transmission. To suppress the transfer delay caused by the bidirectional burst transmission, an AP (Access Point) manages the transmission deadline of each downlink packet on the basis of its acceptable value of delay and adapts the number of packets transferred in the bidirectional burst transmission. Although another existing method also uses the NAV duration to manage STA sleeping, the bidirectional burst transmission can only be initiated by the STAs themselves and the NAV is of an extremely limited duration. On the other hand, the proposed method specifies generalized bidirectional burst transmission without the limitations of the transmission initiator and the burst length within acceptable packet transfer delay. Moreover, we investigate the combination of the proposed method with PSM in order to improve the performance in situations in which the number of STAs is small by taking advantage of the combined properties of PSM and the proposed method. The evaluation results demonstrate that these proposed methods can reduce the power consumption of wireless stations and suppress packet transfer delay.},
keywords={},
doi={10.1587/transcom.2016EBT0003},
ISSN={1745-1345},
month={June},}

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TY - JOUR
TI - Power-Saving Method of Wireless Stations Based on Adaptive Control of Bidirectional Burst Transmission in Wireless LANs
T2 - IEICE TRANSACTIONS on Communications
SP - 986
EP - 996
AU - Kohei OMORI
AU - Yosuke TANIGAWA
AU - Hideki TODE
PY - 2017
DO - 10.1587/transcom.2016EBT0003
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E100-B
IS - 6
JA - IEICE TRANSACTIONS on Communications
Y1 - June 2017
AB - This paper addresses power saving for STAs (Wireless Stations) in WLANs (Wireless LANs). Mobile devices are increasingly used in situations in which they access WLANs. However, mobile devices consume large amounts of power when they communicate through a WLAN, and this shortens their battery lifetime. IEEE 802.11 specifies PSM (Power-Saving Mode) as the power-saving method for standard WLANs. However, the sleep conditions specified by PSM for STAs are not optimal in terms of power saving, except when the number of STAs is small, and this increases packet transfer delay. In this paper, we propose a power-saving method in which STAs reduce power consumption by sleeping for a period specified by the NAV (Network Allocation Vector) duration, which is set by an RTS/CTS handshake, and the duration of the NAV is extended by bidirectional burst transmission. To suppress the transfer delay caused by the bidirectional burst transmission, an AP (Access Point) manages the transmission deadline of each downlink packet on the basis of its acceptable value of delay and adapts the number of packets transferred in the bidirectional burst transmission. Although another existing method also uses the NAV duration to manage STA sleeping, the bidirectional burst transmission can only be initiated by the STAs themselves and the NAV is of an extremely limited duration. On the other hand, the proposed method specifies generalized bidirectional burst transmission without the limitations of the transmission initiator and the burst length within acceptable packet transfer delay. Moreover, we investigate the combination of the proposed method with PSM in order to improve the performance in situations in which the number of STAs is small by taking advantage of the combined properties of PSM and the proposed method. The evaluation results demonstrate that these proposed methods can reduce the power consumption of wireless stations and suppress packet transfer delay.
ER -