Proceedings ArticleDOI
Design of WDM mesh networks with sparse grooming capability
Keyao Zhu,Hui Zang,Biswanath Mukherjee +2 more
- Vol. 3, pp 2696-2700
TLDR
In this article, the authors investigated the problem of designing a sparse-grooming WDM mesh network, and several design schemes were proposed to achieve good network performance and reduce the network cost.Abstract:
In a WDM optical network, the bandwidth requirement of a customer's connection can vary over a wide range, and many of these connections could have a capacity that is much lower than the capacity of a wavelength channel. Efficiently grooming low-speed connections onto high-capacity wavelength channels can significantly improve the bandwidth utilization and minimize the network cost. Our research shows that it is not necessary to have traffic-grooming capability at every network node. We call a network which has only a few grooming nodes to be a sparse-grooming network. Through proper network design and traffic engineering, it is possible for a sparse-grooming network to achieve similar network performance as a network which has grooming capability at every node. We investigate the problem of designing such a sparse-grooming WDM mesh network. The problem is mathematically formulated and several design schemes are proposed. Illustrative numerical results from the mathematical formulation as well as heuristics show that, by properly choosing the grooming nodes, a network with sparse-grooming capability can achieve good network performance and the network cost can be significantly reduced.read more
Citations
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Journal ArticleDOI
Traffic engineering in multigranularity heterogeneous optical WDM mesh networks through dynamic traffic grooming
TL;DR: This article extends an existing generic graph model to perform efficient traffic grooming and achieve different TE objectives through simple shortest path computation algorithms and shows that the approach is very practical and very suitable for traffic engineering in a heterogeneous multigranularity optical WDM mesh network.
Translucent Optical Networks: The Way Forward
Gangxiang Shen,Rodney S. Tucker +1 more
TL;DR: Translucent optical networks as mentioned in this paper are a type of optical transport network specifically devised to address such a concern by allowing for sparse but strategic signal regeneration in the network, which can achieve performance comparable to that of an all-electronic switching network, but requiring far fewer signal regenerators.
Journal ArticleDOI
Translucent optical networks: the way forward [Topics in Optical Communications]
Gangxiang Shen,Rodney S. Tucker +1 more
TL;DR: A range of translucent optical networks are reviewed and various research issues, particularly involving network planning, lightpath routing and wavelength assignment, and network survivability are discussed, including traffic grooming, fault detection, and multicasting for translucent networks.
Journal ArticleDOI
Sparse Traffic Grooming in Translucent Optical Networks
Gangxiang Shen,Rodney S. Tucker +1 more
TL;DR: It is found that the performance of sub-wavelength traffic grooming of a translucent network is substantially improved by increasing the number of opaque switch nodes, though the phenomenon is not general for any type of network topology.
Proceedings ArticleDOI
Performance analysis of sparse traffic grooming in WDM mesh networks
TL;DR: This work proposes the maximize-lightpath-sharing multi-hop (MLS-MH) grooming algorithm to support dynamic traffic grooming in sparse grooming networks and presents an analytical model to evaluate the blocking performance of the MLS-MH algorithm.
References
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Journal ArticleDOI
Traffic grooming in an optical WDM mesh network
Keyao Zhu,Biswanath Mukherjee +1 more
TL;DR: The node architecture for a WDM mesh network with traffic-grooming capability, using wavelength-division multiplexer (OADM) to perform the optical bypass at intermediate nodes to improve the network throughput is studied.
Journal ArticleDOI
Traffic grooming algorithms for reducing electronic multiplexing costs in WDM ring networks
A.L. Chiu,Eytan Modiano +1 more
TL;DR: This work develops traffic grooming algorithms for unidirectional SONET/WDM ring networks and obtains an optimal algorithm which minimizes the number of ADM's by efficiently multiplexing and switching the traffic at the hub.
Proceedings ArticleDOI
Cost effective traffic grooming in WDM rings
TL;DR: Two other OWDM ring networks are considered that are nonblocking, where one has a wide sense non blocking property and the other has a rearrangeably nonblocking property, which are compared using the cost criteria of number of wavelengths and number of transceivers.
Journal ArticleDOI
Cost-effective traffic grooming in WDM rings
TL;DR: Two OADM ring networks are given that have similar performance but are less expensive and two others are considered that are nonblocking, where one has a wide-sense non blocking property and the other has a rearrangeably nonblocking property.
Journal ArticleDOI
An effective and comprehensive approach for traffic grooming and wavelength assignment in SONET/WDM rings
Xijun Zhang,Chunming Qiao +1 more
TL;DR: This study shows that using the proposed algorithms, lower bounds on the number of wavelengths and S-ADMs required for a given traffic pattern can be closely approached in most cases or even achieved in some cases.