Home // ICN 2017, The Sixteenth International Conference on Networks // View article

Offline Routing and Spectrum Allocation Algorithms for Elastic Optical Networks with Survivability

Authors:
Rana Alaskar
Anwar Alyatama
Imtiaz Ahmad

Keywords: elastic optical networks; spectrum allocation; survivability; spectrum utilization

Abstract:
Elastic optical networks (EONs) are a promising solution for future high-speed networks, because of their ability to efficiently manage network resources and provide better spectrum utilization. The intractable routing and spectrum allocation (RSA) problem and the eventually imposed survivability constraints play key roles in the effective design and control of EONs. In this work, we investigate priority allocation algorithms designed to solve the offline RSA problem in protection-based EONs. These algorithms are analyzed from the point of view of their main objective (minimizing the total amount of spectrum needed to serve the traffic demand), when the demand includes unicast unprotected and unicast protected requests. Unicast protected requests utilize a 1+1 dedicated path protection, with the same channel. The proposed priority allocation algorithms are based on the compact scheduling algorithm and the ordering obtained with two different metrics, both of which consider the bandwidth and required number of links of the requests presented to the network. We evaluate the performance and efficiency of the proposed algorithms across a range of demand frequency slots distributions in a mesh network. A comparative analysis of the obtained experimental results reveals that the proposed algorithms outperform existing reference algorithms in terms of spectrum utilization.

Pages: 8 to 14

Copyright: Copyright (c) IARIA, 2017

Publication date: April 23, 2017

Published in: conference

ISSN: 2308-4413

ISBN: 978-1-61208-546-3

Location: Venice, Italy

Dates: from April 23, 2017 to April 27, 2017