A Layered Subtree Scheme for Multicast Communications in Large-Scale Elastic Translucent Optical Networks

To exploit the capacity introduced by elastic optical networks, efficient algorithms must be developed. Efficient modulation techniques have limited reach, so for distant destination nodes, the regeneration of a signal at a few intermediary nodes along the lightpath can effectively reduce the spectr...

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Main Authors: Mehdi Tarhani, Morad Khosravi Eghbal, Mehdi Shadaram
Format: Article
Language:English
Published: IEEE 2020-01-01
Series:IEEE Access
Subjects:
Online Access:https://ieeexplore.ieee.org/document/9006849/
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spelling doaj-792a5504450c4c778d5c3832652d08b82021-03-30T02:40:54ZengIEEEIEEE Access2169-35362020-01-018379023791310.1109/ACCESS.2020.29756219006849A Layered Subtree Scheme for Multicast Communications in Large-Scale Elastic Translucent Optical NetworksMehdi Tarhani0https://orcid.org/0000-0002-7417-8536Morad Khosravi Eghbal1https://orcid.org/0000-0001-8618-2017Mehdi Shadaram2https://orcid.org/0000-0002-2169-1985Department of Electrical and Computer Engineering, The University of Texas at San Antonio, San Antonio, TX, USADepartment of Electrical and Computer Engineering, The University of Texas at San Antonio, San Antonio, TX, USADepartment of Electrical and Computer Engineering, The University of Texas at San Antonio, San Antonio, TX, USATo exploit the capacity introduced by elastic optical networks, efficient algorithms must be developed. Efficient modulation techniques have limited reach, so for distant destination nodes, the regeneration of a signal at a few intermediary nodes along the lightpath can effectively reduce the spectrum utilization and offset the extra cost, in terms of overall transceiver use, introduced by enabling the regeneration. In the context of multicast provisioning, although regeneration can be complex, it, in turn, due to its flexibility, further emphasizes the advantage of tree based routing over serving individual destinations. In this paper, we investigate the problem of routing, modulation level, spectrum allocation, and regenerator placement (RMSA-RP) for multicast provisioning, which, to the best of our knowledge, has not been previously addressed in the literature. Accordingly, we present a networking model through comprehensive integer linear programming, jointly enabling a routing method based on a subtree scheme as well as assigning a few nodes as regenerators of the signal. By means of an algorithm, we also propose a scalable framework to address RMSA-RP when the network is in operation. This algorithm implements a dynamic and automatic geographic partitioning of the destination nodes and then forms the corresponding subtree structures. Constraints taken into account include wavelength contiguity, wavelength continuity, and light splitting that affects the reach of the modulation techniques. Extensive simulation results show that the model can effectively support a greater number of demands without increasing transceiver use.https://ieeexplore.ieee.org/document/9006849/Elastic optical networksmodulationmulticastregeneration placementroutingspectrum allocation
collection DOAJ
language English
format Article
sources DOAJ
author Mehdi Tarhani
Morad Khosravi Eghbal
Mehdi Shadaram
spellingShingle Mehdi Tarhani
Morad Khosravi Eghbal
Mehdi Shadaram
A Layered Subtree Scheme for Multicast Communications in Large-Scale Elastic Translucent Optical Networks
IEEE Access
Elastic optical networks
modulation
multicast
regeneration placement
routing
spectrum allocation
author_facet Mehdi Tarhani
Morad Khosravi Eghbal
Mehdi Shadaram
author_sort Mehdi Tarhani
title A Layered Subtree Scheme for Multicast Communications in Large-Scale Elastic Translucent Optical Networks
title_short A Layered Subtree Scheme for Multicast Communications in Large-Scale Elastic Translucent Optical Networks
title_full A Layered Subtree Scheme for Multicast Communications in Large-Scale Elastic Translucent Optical Networks
title_fullStr A Layered Subtree Scheme for Multicast Communications in Large-Scale Elastic Translucent Optical Networks
title_full_unstemmed A Layered Subtree Scheme for Multicast Communications in Large-Scale Elastic Translucent Optical Networks
title_sort layered subtree scheme for multicast communications in large-scale elastic translucent optical networks
publisher IEEE
series IEEE Access
issn 2169-3536
publishDate 2020-01-01
description To exploit the capacity introduced by elastic optical networks, efficient algorithms must be developed. Efficient modulation techniques have limited reach, so for distant destination nodes, the regeneration of a signal at a few intermediary nodes along the lightpath can effectively reduce the spectrum utilization and offset the extra cost, in terms of overall transceiver use, introduced by enabling the regeneration. In the context of multicast provisioning, although regeneration can be complex, it, in turn, due to its flexibility, further emphasizes the advantage of tree based routing over serving individual destinations. In this paper, we investigate the problem of routing, modulation level, spectrum allocation, and regenerator placement (RMSA-RP) for multicast provisioning, which, to the best of our knowledge, has not been previously addressed in the literature. Accordingly, we present a networking model through comprehensive integer linear programming, jointly enabling a routing method based on a subtree scheme as well as assigning a few nodes as regenerators of the signal. By means of an algorithm, we also propose a scalable framework to address RMSA-RP when the network is in operation. This algorithm implements a dynamic and automatic geographic partitioning of the destination nodes and then forms the corresponding subtree structures. Constraints taken into account include wavelength contiguity, wavelength continuity, and light splitting that affects the reach of the modulation techniques. Extensive simulation results show that the model can effectively support a greater number of demands without increasing transceiver use.
topic Elastic optical networks
modulation
multicast
regeneration placement
routing
spectrum allocation
url https://ieeexplore.ieee.org/document/9006849/
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