Toward green next-generation passive optical networks

Dhaini, Ahmad R.; Ho, Pin–Han; Shen, Gangxiang

doi:10.1109/mcom.2011.6069715

Cited by 110 publications

(63 citation statements)

References 11 publications

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“…Zhang et al [17] proposed a sleep control scheme composed of downstream traffic scheduling rules at the OLT and sleep control rules at ONUs, which reduces energy consumption and improves bandwidth utilization effectively. Dhaini et al [8] proposed a green bandwidth allocation (GBA) framework to achieve the maximum possible energy saving. In GBA, hybrid cyclic/deep sleep is enabled.…”

Section: Related Workmentioning

confidence: 99%

“…Because of the differences between unicast and multicast traffic, the sleep processes of ONUs oriented to multicast traffic cannot be handled Journal of Electrical and Computer Engineering 3 by the strategies in [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. The authors in [19][20][21] mainly studied the bandwidth allocation problem of multicast traffic in TDM-PON (time division multiplexing-PON), WDM-PON (wavelength division multiplexing-PON), and TDM-WDM-PON, respectively.…”

Section: Related Workmentioning

confidence: 99%

“…The constraint in (8) ensures that all ONU receivers belonging to the same multicast group must stay active during the transmission of multicast traffic for the multicast group. The constraint in (9) determines whether to wake up the ONU at the beginning of th downstream transmission slot.…”

Section: Problem Formulationmentioning

confidence: 99%

“…Therefore, the irrelevant ONUs stay in a low-power or sleep state to save energy. However, most literature focuses on energy saving oriented to unicast traffic [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. In this work, we propose an energy-saving algorithm for multicast traffic (ESMT) to reduce the energy consumption of EPON ONUs oriented to multicast traffic, while maintaining the traffic delay at an acceptable level.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A Multicast-Traffic-Oriented Energy-Saving Algorithm with a Hybrid Sleep Mode for EPONs

Zhang

Guo

Liu

et al. 2016

Journal of Electrical and Computer Engineering

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High energy consumption in Ethernet Passive Optical Networks (EPONs) has caused intense research on energy-saving methods in recent years. The most common method for EPON energy saving is to cause optical network units (ONUs) to sleep which are idle or low loaded. With the popularity of multimedia applications, the ONUs carry not only unicast traffic but also more and more multicast traffic. However, existing studies mainly focus on ONUs that support only unicast traffic. The many differences between multicast traffic and unicast traffic make it necessary to design novel energy-saving methods. This paper proposes a multicasttraffic-oriented energy-saving algorithm for EPONs, called the energy-saving algorithm for multicast traffic (ESMT). To save as much energy as possible, the proposed algorithm uses a hybrid sleep mode (composed of a deep sleep state and an independent sleep mode) in which not only can ONU enter a deep sleep state, but also the ONU transmitter and receiver can sleep independently. Simulation results show that the proposed algorithm, which is oriented to multicast traffic in EPONs, is more energy efficient than other algorithms.

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Section: Related Workmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

Section: Problem Formulationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Multicast-Traffic-Oriented Energy-Saving Algorithm with a Hybrid Sleep Mode for EPONs

Zhang

Guo

Liu

et al. 2016

Journal of Electrical and Computer Engineering

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“…The femtocell deployment scenarios are analyzed by means of achievable energy efficiency. Although there are several studies that consider energy efficiency of RF wireless [7,9,10,11,12,13] and optical wired [2,3,4,5,6,14] access as separate networks, there is still no study, to the best of the authors' knowledge, that investigate a combined wireless/optical network form the energy point of view.…”

Section: Introductionmentioning

confidence: 99%

Energy efficiency of femtocell deployment in combined wireless/optical access networks

et al. 2013

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Optical/wireless convergence has become of particular interest recently because a combined radio wireless and optical wired network has the potential to provide both mobility and high bandwidth in an efficient way. Recent developments of new radio access technologies such as the Long Term Evolution (LTE) and introduction of femtocell base stations open new perspectives in providing broadband services and applications to everyone and everywhere, but the instantaneous quality of radio channel varies in time, space and frequency and radio communication is inherently energy inefficient and susceptible to reflections and interference. On the other hand, optical fiber-based networks do not provide mobility, but they are robust, energy efficient, and able to provide both an almost unlimited bandwidth and high availability.In this paper, we analyze the energy efficiency of combined wireless/optical access networks, in which LTE technology provides ubiquitous broadband Internet access, while optical fiber-based technologies serve as wireless backhaul and offer high-bandwidth wired Internet access to business and residential customers. In this contest, we pay a particular attention to femtocell deployment for increasing both access data rates and area coverage. The paper presents a novel model for evaluating the energy efficiency of combined optical/wireless networks that takes into account the main architectural and implementational aspects of both RF wireless and optical parts of the access network. Several hypothetical network deployment scenarios are defined and used to study effects of femtocell deployment and power saving techniques on network's energy efficiency in urban, suburban and rural areas and for different traffic conditions.

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Green Optical Networks: Power Savings versus Network Performance

Monti

2015

Green Communications

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Toward green next-generation passive optical networks

Cited by 110 publications

References 11 publications

A Multicast-Traffic-Oriented Energy-Saving Algorithm with a Hybrid Sleep Mode for EPONs

A Multicast-Traffic-Oriented Energy-Saving Algorithm with a Hybrid Sleep Mode for EPONs

Energy efficiency of femtocell deployment in combined wireless/optical access networks

Green Optical Networks: Power Savings versus Network Performance

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