Journal ArticleDOI
A mixed connection recovery strategy for surviving dual link failure in WDM networks
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TLDR
A comparative study of the proposed mixed connection recovery algorithm namely Adaptive Backup Routing over Reserved Resources (ABRRR) under the network parameters of Blocking Probability, Dual Restorability, and Resource Utilization Ratio (RUR) establishes that the use of ABRRR leads to lower Blocking probability, higher Dual Restoration, and minimized RUR compared to the existing strategies.About:
This article is published in Optical Fiber Technology.The article was published on 2013-03-01. It has received 20 citations till now. The article focuses on the topics: Backup & Path protection.read more
Citations
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Journal ArticleDOI
SLA-aware differentiated QoS in elastic optical networks
TL;DR: The proposed SADQ is the first scheme in optical networks to employ exhaustive differentiation at the levels of routing, spectrum allocation, and survivability in a single algorithm and is compared with two existing benchmark routing and spectrum allocation schemes designed under EONs.
Journal ArticleDOI
Spectrum efficient distance-adaptive paths for fixed and fixed-alternate routing in elastic optical networks
TL;DR: A new routing scheme for EON is proposed, namely, k -distance adaptive paths (KDAP) that efficiently utilizes the benefit of distance-adaptive modulation, and bit rate- Adaptive superchannel capability inherited by EON to improve spectrum utilization.
Journal ArticleDOI
Quasi Path Restoration: A post-failure recovery scheme over pre-allocated backup resource for elastic optical networks
TL;DR: Quasi Path Restoration provides a reasonable trade-off between bandwidth blocking probability and connection recoverability and is compared with Shared Path Protection and Primary First-Fit Backup Last Fit strategies in terms of Bandwidth Blocking Probability (BBP) and average frequency slots per connection request.
Journal ArticleDOI
Optimizing multiple ONUs placement in Fiber-Wireless (FiWi) access network using Grasshopper and Harris Hawks Optimization Algorithms
Puja Singh,Shashi Prakash +1 more
TL;DR: Investigations undertaken towards optimal placement of multiple Optical Network Units (ONUs) in FiWi network using two recent optimization algorithms named as Harris Hawks Optimization (HHO) and Grasshopper Optimization algorithms (GOA) demonstrate the superiority of the proposed HHO algorithm over GOA and WOA algorithms.
Journal ArticleDOI
Efficient resource provisioning using traffic balancing in multidomain optical networks
TL;DR: From the results, it can be inferred that the proposed TB policies outperform the TA‐RWA, and the existing strategies of the blocking probability, resource utilization ratio (RUR), and percentage of intradomain and interdomain connections established.
References
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Proceedings ArticleDOI
On double-link failure recovery in WDM optical networks
TL;DR: A heuristic algorithm that pre-computes backup paths for links is presented and numerical results suggest that it is possible to achieve 100% recovery from double-link failures with a modest increase in backup capacity.
Journal ArticleDOI
Efficient distributed restoration path selection for shared mesh restoration
TL;DR: This paper proposes an efficient restoration path selection algorithm for restorable connections over shared bandwidth in a fully distributed MPLS/GMPLS architecture and describes how to extend MPLS or GMPLS signaling protocols to collect the necessary information efficiently.
Proceedings ArticleDOI
Path-based protection for surviving double-link failures in mesh-restorable optical networks
Wensheng He,Arun K. Somani +1 more
TL;DR: This work uses integer programming to optimize the total capacity requirement for both dedicated-and shared-path protection schemes for two-link failures in mesh optical networks and indicates that backup multiplexing significantly improves the efficiency of total capacity utilization.
Journal ArticleDOI
Subpath protection for scalability and fast recovery in optical WDM mesh networks
Canhui Ou,Hui Zang,N.K. Singhal,Keyao Zhu,L. Sahasrabuddhe,R. A. MacDonald,Biswanath Mukherjee +6 more
TL;DR: Comparisons between subpath protection and shared-path protection on a nationwide network with dozens of wavelengths per fiber show that, for a modest sacrifice in resource utilization, sub path protection achieves improved survivability, much higher scalability, and significantly reduced fault-recovery time.
Journal ArticleDOI
Backup reprovisioning to remedy the effect of multiple link failures in WDM mesh networks
TL;DR: This study performs MBR or GBR after one network failure occurs to protect against the next potential failure in a wavelength-convertible WDM mesh network and compares capacity requirement and computational complexity of MBR to that of GBR through numerical examples.