Long-Reach Optical Access

Song, Huan; Mukherjee, Biswanath

doi:10.1007/978-0-387-92131-0_10

Cited by 7 publications

(4 citation statements)

References 19 publications

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“…Further, energy-efficient resource allocation mechanisms, green routing, long-reach optical access networks, etc. are being investigated at the network level to reduce energy consumption of optical networks [60]. At the application level, mechanisms for energy-efficient network connectivity such as "Proxying" [61] and green approaches for cloud computing [62] are being proposed to reduce the energy consumption.…”

Section: Energy-driven Optical Wdm Networkmentioning

confidence: 99%

A Survey on Next-Generation Mixed Line Rate (MLR) and Energy-Driven Wavelength-Division Multiplexed (WDM) Optical Networks

Iyer

2015

Journal of Optical Communications

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With the ever-increasing traffic demands, infrastructure of the current 10 Gbps optical network needs to be enhanced. Further, since the energy crisis is gaining increasing concerns, new research topics need to be devised and technological solutions for energy conservation need to be investigated. In all-optical mixed line rate (MLR) network, feasibility of a lightpath is determined by the physical layer impairment (PLI) accumulation. Contrary to PLI-aware routing and wavelength assignment (PLIA-RWA) algorithm applicable for a 10 Gbps wavelength-division multiplexed (WDM) network, a new Routing, Wavelength, Modulation format assignment (RWMFA) algorithm is required for the MLR optical network. With the rapid growth of energy consumption in Information and Communication Technologies (ICT), recently, lot of attention is being devoted toward "green" ICT solutions. This article presents a review of different RWMFA (PLIA-RWA) algorithms for MLR networks, and surveys the most relevant research activities aimed at minimizing energy consumption in optical networks. In essence, this article presents a comprehensive and timely survey on a growing field of research, as it covers most aspects of MLR and energy-driven optical networks. Hence, the author aims at providing a comprehensive reference for the growing base of researchers who will work on MLR and energy-driven optical networks in the upcoming years. Finally, the article also identifies several open problems for future research.Keywords: physical layer impairment-aware routing and wavelength assignment, mixed line rate, energy efficiency, wavelength-division multiplexing PACS®(2010). 42.15. Eq, 42.81.Uv, 42.79 Sz

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Section: Energy-driven Optical Wdm Networkmentioning

confidence: 99%

A Survey on Next-Generation Mixed Line Rate (MLR) and Energy-Driven Wavelength-Division Multiplexed (WDM) Optical Networks

Iyer

2015

Journal of Optical Communications

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“…In the operational range, network performance expectations are as follows: Throughput is expected to be responsive and linear with respect to the load applied to the network and packet delay is expected to be within 2 ms as specified in [11]. To evaluate the network performance two scenarios were considered.…”

Section: A Network Performance Of Different Architecturesmentioning

confidence: 99%

Load-Dependent Power-Efficient Passive Optical Network Architectures

Sankaran

Sivalingam

2014

J. Opt. Commun. Netw.

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Passive optical networks consume nearly 70% of peak power even when the network load is almost zero (i.e., off-peak). To reduce power consumption under low-load conditions, we propose the concept of a flexible network architecture. Each architecture is a unique combination of central office, subscriber, and end-user equipment variants. Three such architectures are proposed. The architecture that minimizes the overall power consumption of the network can be chosen provided its network performance is within an acceptable range. Using numerical evaluation, we observe that three of these architectures perform better than the others. We describe the network operation for these architectures and then evaluate their network performance using simulations. For two of the studied scenarios, it is shown that at least 35% power savings can be achieved by adopting a proposed architecture during off-peak network loads, without significant performance impact in terms of throughput and packet delay.

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“…-At the transmission level, low-attenuation and lowdispersion fibers, energy-efficient optical transmitters and receivers, which improve the energy efficiency of transmission, have been introduced [22], [24]. -Energy-efficient resource allocation mechanisms and green routing [22], [25] have been investigated at the network level to reduce energy consumption. In [26], lightpath bypass routing has been implemented to reduce power consumption in the IP over WDM network by reducing required number of IP router ports.…”

Section: Introductionmentioning

confidence: 99%

Green Distributed Quality of Transmission Aware Routing and Wavelength Assignment in All-Optical Networks

Kakekhani

Rahbar

2013

Journal of Optical Communications

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The Routing and Wavelength Assignment (RWA) algorithms that consider quality of transmission (QoT) in light-path setup spend more time than their conventional counterparts due to exhaustive search and QoT estimation. This paper proposes distributed Quality of Transmission Aware Routing and Wavelength Assignment (QARWA) algorithm to handle dynamic light-path provisioning in wavelength routed all-optical networks taking energy consumption of optical switch nodes into account. Specifically, the QARWA considers bit-error rate (BER), setup delay, and energy consumption constraints at the same time, and establishes light-paths with small BER, low setup latency, and reduced energy consumption. We present and evaluate an enhanced wavelength-assignment solution in the QARWA to handle the wavelength continuity constraint. In QARWA, a source node determines the connection path by means of the shortest path algorithm and a destination node selects a wavelength based on the BER limitation and decreasing order of setup latency. Relating energy consumption to processing time, we show that QARWA can decrease the total energy consumption by reducing the processing time at each node. Under QARWA, when a node finishes the processing of the last control packet, it makes transition to either sleep state or idle state. Hence, QARWA can provide the best performance since it can reduce processing time in control units, light-path setup latency, and energy consumption of nodes.

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Long-Reach Optical Access

Cited by 7 publications

References 19 publications

A Survey on Next-Generation Mixed Line Rate (MLR) and Energy-Driven Wavelength-Division Multiplexed (WDM) Optical Networks

A Survey on Next-Generation Mixed Line Rate (MLR) and Energy-Driven Wavelength-Division Multiplexed (WDM) Optical Networks

Load-Dependent Power-Efficient Passive Optical Network Architectures

Green Distributed Quality of Transmission Aware Routing and Wavelength Assignment in All-Optical Networks

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