Energy Management Mechanism for Ethernet Passive Optical Networks (EPONs)

Yan, Ying; Wong, Shing‐Wa; Valcarenghi, L.; Yen, She-Hwa; Campelo, Divanilson R.; Yamashita, Shinji; Kazovsky, L.G.; Dittmann, Lars

doi:10.1109/icc.2010.5502659

Cited by 88 publications

(55 citation statements)

References 7 publications

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“…and from (4) and (7), we get: (2). This is reasonable because, in EPON systems, a limited service with a very large window size W max converges to a gated service discipline.…”

Section: Downstream Delay Analysismentioning

confidence: 88%

“…We are particularly interested in observing the impact on the scheduling performance due to the limited service discipline and the increase on the number of ONUs in the system. The section comprises three parts: (1) analytical model observation, (2) validation of the analytical model using simulations, and (3) performance measurement of presented scheme versus counterparts. MATLAB is used to simulate the proposed scheme and the scheduling algorithm in all three parts.…”

Section: Simulation and Numerical Resultsmentioning

confidence: 99%

“…To meet this goal, most previous studies manipulate DBA schemes such that an ONU can be put into sleep while the OLT is receiving data from other ONUs [1], [2], [3], [4]. Previous studies are based on a common assumption that the OLT can buffer the downstream traffic of a "sleeping" ONU until the ONU wakes up.…”

mentioning

confidence: 99%

“…Two energy management mechanisms for EPONs have been reported in [2], namely Upstream Centric Scheduling (UCS) and Downstream Centric Scheduling (DCS). Using UCS, the OLT buffers the downstream traffic of an ONU and starts transmitting it only in the designated upstream time slot of the ONU so as to reduce the ONU active time.…”

mentioning

confidence: 99%

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Downstream-based Scheduling for Energy Conservation in Green EPONs

Chen¹,

Dhaini²,

Ho³

et al. 2012

JCM

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Abstract-Maximizing the optical network unit's (ONU) sleep time is an effective approach for achieving maximum energy conservation in green Ethernet passive optical networks (EPONs). While overlapping downstream and upstream ONU transmissions can maximize the ONU sleep time, it jeopardizes the quality of service (QoS) performance of the network, especially for downstream traffic in case the overlapping is based on the upstream time slot. In this paper, we study the downstream traffic performance in green EPONs under the limited service discipline and the upstream-based overlapped time window. Specifically, we first derive the expected mean packet delay, and then present a closed-form expression of the ONU sleep time, setting identical upstream/downstream transmission cycle times based on a maximum downstream traffic delay requirement. With the proposed system model, we present a novel downstream bandwidth allocation scheme for energy conservation in green EPONs. Simulation results verify the proposed model and highlight the advantages of our scheme over conventional approaches.

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“…and from (4) and (7), we get: (2). This is reasonable because, in EPON systems, a limited service with a very large window size W max converges to a gated service discipline.…”

Section: Downstream Delay Analysismentioning

confidence: 88%

Section: Simulation and Numerical Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Downstream-based Scheduling for Energy Conservation in Green EPONs

Chen¹,

Dhaini²,

Ho³

et al. 2012

JCM

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“…Therefore, decreasing the energy consumption of broadband access networks is an effective way to green all networks. Furthermore, the Ethernet Passive Optical Network (EPON) has become one of the most feasible broadband access technologies, for its low energy consumption and wide deployment [2,3]. Consequently, energy saving is a topic of paramount importance in EPON contexts today.…”

Section: Introductionmentioning

confidence: 99%

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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Overview of Broadband Access Technologies

Ansari

Zhang

2012

Media Access Control and Resource Allocation

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Energy Management Mechanism for Ethernet Passive Optical Networks (EPONs)

Cited by 88 publications

References 7 publications

Downstream-based Scheduling for Energy Conservation in Green EPONs

Downstream-based Scheduling for Energy Conservation in Green EPONs

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

Overview of Broadband Access Technologies

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