Energy efficiency and CAPEX minimization for backbone network planning: Is there a tradeoff?

Palkopoulou, Eleni; Schupke, Dominic; Bauschert, Thomas

doi:10.1109/ants.2009.5409867

Cited by 23 publications

(23 citation statements)

References 9 publications

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“…The rest of the input parameters are as follows: C=10 Gbps; W=8; B=8; 1≤F≤60; R=5,000 km; all MG-OXC/EXC ports have the same power consumption; the power consumption of the MG-OXC/EXC port is 8/80 Watts [17,18] and the power consumption of the EDFA is 8 Watts [12]; and L span = 80 km [12]. We assume that nodes in sleep mode consume negligible amount of power [12].…”

Section: Network Architecturementioning

confidence: 99%

Multi-Granular Optical Transport Network design with dual power state

Naas

Kantarcı

Mouftah

2012

2012 IEEE Globecom Workshops

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Bandwidth utilization and management advancements of Multi-Granular Optical Transport Networks (MG-OTN) have been shown to couple with power savings through lowered port counts. In this paper, we propose energy-efficient design of MGOTNs by adopting multiple power levels at the MG nodes. Our proposed scheme combines the advantages of a previously proposed energy-efficient design method and introducing dual power state behavior to the MG nodes. According to the proposed scheme, a node can be either in the on state where it can add, drop and forward traffic at any granularity, or in the sleep state where it can only add and drop traffic, and accordingly, it saves the switching power consumption due to pass-through traffic. Through extensive simulations, we evaluate the proposed dual power state-based MG-OTN design in terms of energy-efficiency. Numerical results confirm that for all tested traffic patterns, putting a certain number of nodes in the sleep mode can guarantee significant power savings. Furthermore, we provide information on optimal selection of the nodes that have to be put in the sleep mode. Moreover, we study the topology dependence of the proposed scheme and show that high network connectivity leads to high power savings.

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Section: Network Architecturementioning

confidence: 99%

Multi-Granular Optical Transport Network design with dual power state

Naas

Kantarcı

Mouftah

2012

2012 IEEE Globecom Workshops

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“…However, the power consumption is still high because hardware devices and network elements use the same power for data transmission regardless of their traffic load. The actual link utilization is below 5% and 30% at an edge link and backbone, respectively [7]- [10]. Therefore, data rate adaptation depending on link utilization is another method that can provide more energy efficient networks.…”

Section: Introductionmentioning

confidence: 99%

An Energy Saving Scheme for Multilane-Based High-Speed Ethernet

Han¹

2012

ETRI J

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In this paper, we propose a scheme for partially dynamic lane control for energy saving in multilane-based high-speed Ethernet. In this scheme, among the given transmission lanes, at least one lane is always operating, and the remaining lanes are dynamically activated to alleviate the network performance in terms of queuing delay and packet loss in the range of acceptance. The number of active lanes is determined by the decision algorithm based on the information regarding traffic and queue status. The reconciliation sublayer adjusts the transmission lane with the updated number of lanes received from the algorithm, which guarantees no processing delay in the media access control layer, no overhead, and minimal delay of the exchanging control frames. The proposed scheme is simulated in terms of queuing delay, packet loss rate, lane changes, and energy saving using an OPNET simulator. Our results indicate that energy savings of around 55% (or, when the offered load is less than 0.25, a significant additional savings of up to 75%) can be obtained with a queuing delay of less than 1 ms, a packet loss of less than 10 -4 , and a control packet exchange time of less than 0.5 μs in random traffic.

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“…In [8] the authors focus on two network architectures (IP-over-WDM with gray interfaces and IP-over-opticaltransport-network-over-WDM). The optimization model is not explicitly presented, but the authors explain that the optimal router basic node and the electrical cross connect basic node as well as the degree of the OXC are selected as a result of the optimization.…”

Section: B Ip and Wdm Layers Without Fiber Installationmentioning

confidence: 99%

“…The new population is composed of the Γ individuals of the offspring and by the best Θ − Γ individuals of the old population. Then, the fitness function of the new population is computed (line 7) and the fitness value is compared with the minimum one and eventually stored (lines [8][9][10][11][12][13]. The evolution process is terminated when the fitness function of the best individual of the population has not improved for Δ number of generations (line 4).…”

Section: Genetic Algorithm For Green Designmentioning

confidence: 99%

“…In the literature, the topic of power-aware design of optical backbone networks has been investigated in different works, such as [8][9][10]. Most previous contributions focus on multicommodity flow (MCF) [11] modeling, that is, the transportation problem where multiple commodities (traffic demands) need to be routed over a network with limited capacity.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Energy-Aware Design of Multilayer Core Networks [Invited]

Ahmad¹,

Bianco²,

Bonetto³

et al. 2013

J. Opt. Commun. Netw.

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Abstract-We consider the power-efficient design of an Internet protocol (IP)-over-wavelength division multiplexing (WDM) network, tackling the problem of installing optical and IP layer equipment to satisfy traffic requirements. We take into account routing constraints and consider a comprehensive set of realistic scenarios defined by network topology, traffic matrix, and power consumption values of network devices in both layers. Furthermore, besides defining and solving an optimal integer linear programming model, we propose an efficient heuristic to solve the problem up to medium-sized networks. The proposed heuristic requires at most 30% of additional power with respect to the optimal solution, but with a significantly reduced complexity. We show that the largest power consumption is due to line cards and routers rather than WDM equipment. Furthermore, we find that multipath routing reduces the network power consumption with respect to single-path routing, but not significantly. Finally, we show that a two-step design procedure, in which power is separately minimized in each layer (i.e., IP and WDM layers), can find results with a total power consumption comparable to the one achieved by a more complex joint multilayer design procedure.

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Energy efficiency and CAPEX minimization for backbone network planning: Is there a tradeoff?

Cited by 23 publications

References 9 publications

Multi-Granular Optical Transport Network design with dual power state

Multi-Granular Optical Transport Network design with dual power state

An Energy Saving Scheme for Multilane-Based High-Speed Ethernet

Energy-Aware Design of Multilayer Core Networks [Invited]

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