Abstract

With increasing energy consumption of the Internet, it is now imperative to design energy-efficient network architectures and protocols. Optical technologies have significant promise in improving the energy efficiency of network infrastructures. Future optical backbone networks will be heterogeneous in nature where a single link may carry various line-rate signals. This mixed-line-rate (MLR) network architecture is shown to be cost effective in satisfying heterogeneous traffic demands. In this study, we present mathematical models that can act as references for designing energy- and cost-efficient MLR optical networks. We also perform a comparative study of the energy efficiency of MLR and special cases of MLR design, named as single-line-rate networks (where all the links have same line rates). We explore the scenarios where the MLR networks minimize energy consumption. Finally, we investigate the relationship between energy-minimized and cost-minimized MLR network design.

© 2011 IEEE

Energy-Efficient and Cost-Efficient Capacity Upgrade in Mixed-Line-Rate Optical Networks

Avishek Nag, Massimo Tornatore, and Biswanath Mukherjee
J. Opt. Commun. Netw. 4(12) 1018-1025 (2012)

New Strategies for Connection Protection in Mixed-Line-Rate Optical WDM Networks

Menglin Liu, Massimo Tornatore, and Biswanath Mukherjee
J. Opt. Commun. Netw. 3(9) 641-650 (2011)

IP-Over-WDM Network Design Methodology to Improve Efficiency in Overall Expenditure Due to Cost and Energy Consumption

Suman Kr. Dey and Aneek Adhya
J. Opt. Commun. Netw. 7(6) 563-577 (2015)

Efficiency of Adaptive and Mixed-Line-Rate IP Over DWDM Networks Regarding CAPEX and Power Consumption [Invited]

Axel Klekamp, Ulrich Gebhard, and Frank Ilchmann
J. Opt. Commun. Netw. 4(11) B11-B16 (2012)

A Power Consumption Analysis for IP-Over-WDM Core Network Architectures

Francesco Musumeci, Massimo Tornatore, and Achille Pattavina
J. Opt. Commun. Netw. 4(2) 108-117 (2012)