Assessment of the power saving potential in dense enterprise WLANs

Ganji, Fatemeh; Budzisz, Lukasz; Wolisz, Adam

doi:10.1109/pimrc.2013.6666630

Cited by 21 publications

(25 citation statements)

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“…An alternative approach to the power wastage problem in dense WLANs was recently presented in [87] (further results in [88]). Authors claim that the density of the WLAN APs can be reduced drastically, to the extent that the APs remaining in the operation will only provide the coverage required to discover the user presence.…”

Section: ) Homogeneous Scenariosmentioning

confidence: 99%

“…In order to take into account the performance of those techniques for sleep modes in WLANs, which remove the necessity to guarantee the full coverage, e.g., [88] (see Section IV-B1), we have assumed that the energy efficient AP density cannot fall below user density. Indeed, this emulates the best possible performance of those sleep schemes, which for very low user densities tend to turn on one AP for each active user, on average.…”

Section: Performance Assessment (Long Term Savings)mentioning

confidence: 99%

See 1 more Smart Citation

Dynamic Resource Provisioning for Energy Efficiency in Wireless Access Networks: A Survey and an Outlook

Budzisz

Ganji

Rizzo

et al. 2014

IEEE Commun. Surv. Tutorials

Self Cite

123

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Abstract-Traditionally, energy efficiency aspects have been included in the wireless access network design space only in the context of power control aimed at interference mitigation and for the increase of the terminal battery lifetime. Energy consumption of network components has also, for a long time, not been considered an issue, neither in equipment design nor in network planning and management. However, in recent years, with the user demand increasing at nearly exponential pace and margins rapidly shrinking, concerns about energy efficiency have been raised, with the objective of reducing network operational costs (not to mention the environmental issues). Installing more energy-efficient hardware does not seem to fully solve the problem, since wireless access networks are almost invariably (over)provisioned with respect to the peak user demand. This means that efficient resource management schemes, which are capable of controlling how much of the network infrastructure is actually needed and which parts can be temporarily powered off to save energy, can be extremely effective and provide quite large cost reductions. Considering that most of the energy in wireless access networks is consumed in the radio part, dynamic provisioning of wireless access network resources is crucial to achieving energy-efficient operation. The consensus on this approach in the research community has been wide in the last Manuscript received September 6, 2013; revised March 13, 2014; accepted May 6, 2014 G. Koutitas and L. Tassiulas are with the Department of Computer Engineering and Telecommunications, University of Thessaly, Volos 38221, Greece (e-mail: george.koutitas@gmail.com; leandros@inf.uth.gr).S. Lambert, B. Lannoo, and M. Pickavet are with the Department of Information Technology, Ghent University iMinds, Gent 9000, Belgium (e-mail: sofie.lambert@intec.ugent.be; bart.lannoo@intec.ugent.be; mario.pickavet@ intec.ugent.be).A. Conte and I. Haratcherev are with Alcatel-Lucent Bell Labs, BoulogneBillancourt 92100, France (e-mail: alberto.conte@alcatel-lucent.com; ivaylo@alcatel-lucent.com; haratcherev@alcatel-lucent.com few years, and a large number of solutions have been proposed. In this paper, we survey the most important proposals, considering the two most common wireless access technologies, namely, cellular and WLAN. The main features of the proposed solutions are analyzed and compared, with an outlook on their applicability in typical network scenarios that also include cooperation between both access technologies. Moreover, we provide an overview of the practical implementation aspects that must be addressed to achieve truly energy-efficient wireless access networks, including current standardization work, and trends in the development of energy-efficient hardware.

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Section: ) Homogeneous Scenariosmentioning

confidence: 99%

Section: Performance Assessment (Long Term Savings)mentioning

confidence: 99%

Dynamic Resource Provisioning for Energy Efficiency in Wireless Access Networks: A Survey and an Outlook

Budzisz

Ganji

Rizzo

et al. 2014

IEEE Commun. Surv. Tutorials

Self Cite

123

View full text Add to dashboard Cite

show abstract

“…The aggregation has been performed considering the receiving signal strength and the current bandwidth usage of APs. In [18], an aggressive scheme is proposed to adapt APs according to the density of actual traffic loads. This method keeps APs inactive to the extent so that the remaining active APs can provide the coverage for the hosts.…”

Section: Related Work In Literaturementioning

confidence: 99%

An Active Access-Point Configuration Algorithm for Elastic Wireless Local-Area Network System Using Heterogeneous Devices

Mamun

Islam

Funabiki

et al. 2016

IJNC

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An Elastic Wireless Local-Area Network (WLAN) system provides a reliable, flexible, and efficient Internet access to users through installations of heterogeneous access points (APs) including dedicated APs (DAPs), virtual APs (VAPs), and mobile APs (MAPs). The number of APs should be carefully selected to optimize the network performance. Specifically, for heavy traffic, a large number of APs are required. However, the dense deployment of APs introduces the inter-AP interferences which may eventually degrade the communication quality when the number of users are few. In this paper, we propose an active access-point configuration algorithm that activates or deactivates APs according to the changes of network topologies and demands of users for the elastic WLAN system. The algorithm considers the bandwidth difference among heterogeneous AP devices and the total available bandwidth in the network. The number of active APs is minimized to ensure the minimum inter-AP interference subject to the constraints. The host locations can be the candidate positions for the MAPs, because host owners may use them for the Internet access. The effectiveness of the proposed algorithm is demonstrated using the WIMNET simulator.

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“…The application of a static planning switching strategy, (e.g., [9]), that switches off the APs during night and on Sundays, can be very effective. Both cases, in which the minimum coverage is guaranteed continuously, lead to a significant savings of more than 40%.…”

Section: Possible Savingsmentioning

confidence: 99%