Energy-Efficient Routing and Spectrum Assignment Algorithm with Physical-Layer Impairments Constraint in Flexible Optical Networks

AbstractThe recently proposed flexible optical network can provide more efficient accommodation of multiple data rates than the current wavelength-routed optical networks. Meanwhile, the energy efficiency has also been a hot topic because of the serious energy consumption problem. In this paper, the energy efficiency problem of flexible optical networks with physical-layer impairments constraint is studied. We propose a combined impairment-aware and energy-efficient routing and spectrum assignment (RSA) algorithm based on the link availability, in which the impact of power consumption minimization on signal quality is considered. By applying the proposed algorithm, the connection requests are established on a subset of network topology, reducing the number of transitions from sleep to active state. The simulation results demonstrate that our proposed algorithm can improve the energy efficiency and spectrum resources utilization with the acceptable blocking probability and average delay.

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Energy Efficient Routing and Spectrum Assignment With Regenerator Placement in Elastic Optical Networks

Journal of Lightwave Technology ◽

10.1109/jlt.2014.2319575 ◽

2014 ◽

Vol 32 (10) ◽

pp. 2019-2027 ◽

Cited By ~ 54

Author(s):

Ahmad Fallahpour ◽

Hamzeh Beyranvand ◽

S. Alireza Nezamalhosseini ◽

Jawad A. Salehi

Keyword(s):

Optical Networks ◽

Energy Efficient ◽

Energy Efficient Routing ◽

Spectrum Assignment ◽

Routing And Spectrum Assignment

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A Novel Weighted Energy Efficient Routing and Spectrum Assignment Algorithm in Flexible Optical Networks

Journal of Optical Communications ◽

10.1515/joc-2014-0063 ◽

2015 ◽

Vol 36 (3) ◽

Cited By ~ 1

Author(s):

Jijun Zhao ◽

Qiuyan Yao ◽

Danping Ren ◽

Wei Li ◽

Nawa Zhang

Keyword(s):

Energy Efficiency ◽

Energy Consumption ◽

Optical Networks ◽

Energy Efficient ◽

Utilization Efficiency ◽

Energy Efficient Routing ◽

Spectrum Assignment ◽

Weighted Energy ◽

Routing And Spectrum Assignment

AbstractThe network resource utilization efficiency is limited by the rigid nature of the current wavelength-routed optical networks. The recently proposed flexible optical network can allocate the spectral resources adaptively according to the traffic demand. Meanwhile, the transmission quality has always been a main objective during the routing process in optical networks. Recently, the energy efficiency has also been a hot topic because of the energy consumption problem. In this paper, we propose a novel weighted energy efficient routing and spectrum assignment scheme based on the designed quality of transmission (QoT)-energy estimation model in which the physical impairments and energy consumption are given consideration to two or more things. The simulation results demonstrate that the proposed algorithm can make a better balance between the quality of service (QoS) and energy efficiency.

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