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Online routing and spectrum assignment in flexgrid optical networks
2015 17th International Conference on Transparent Optical Networks (ICTON), 2015In this paper we propose a novel method for online routing and spectrum assignment (RSA) in flexgrid optical networks based on the theory of Markov Decision Processes (MDP). This theory has already been successfully applied to optimum state-dependent routing in multiservice circuit switched networks.
Ronald Romero Reyes, Thomas Bauschert
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A Penalty-Based Routing and Spectrum Assignment in Fragmented Elastic Optical Network Spectrum
2021 National Conference on Communications (NCC), 2021Routing and spectrum assignment (RSA) has been an area of keen interest in Elastic Optical Networks (EONs). Improper resource provisioning causes fragmentation in the network spectrum, which leads to inefficient spectrum utilization. It also causes an increase in blocking of the new connection requests.
Anjali Sharma +3 more
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Routing modulation and spectrum assignment under spectrum conversion in elastic optical networks
2018 3rd International Conference on Microwave and Photonics (ICMAP), 2018The routing modulation and spectrum assignment (RMSA) constraints hinder the performance of elastic optical networks (EONs). To reduce this hindrance, various RMSA heuristics are proposed by utilizing spectrum conversion techniques in a novel way. The key to proposed conversion techniques lies in the selection of a conversion window (CW).
Upama Vyas, Shashi Prakash
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Routing and Spectrum Assignment Algorithm based on Spectrum Fragment Assessment of Arriving Services
2019 28th Wireless and Optical Communications Conference (WOCC), 2019Elastic Optical Network (EON) is the promising solution for future optical networks. Spectrum fragments is one of the key issues in EON which will affect the allocation of subsequent services and the utilization of spectrum resource. This paper proposes an improved RSA algorithm for elastic optical network based on spectrum fragment assessment of ...
Bokai Cheng +6 more
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Solving the routing and spectrum assignment problem, driven by combinatorial properties
Networks, 2023AbstractThe routing and spectrum assignment problem in modern optical networks is an NP‐hard problem that has received increasing attention during the last years. The majority of existing integer linear programming models for the problem uses edge‐path formulations where variables are associated with all possible routing paths so that the number of ...
da Silva, Pedro Henrique Fernandes +3 more
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2019 28th Wireless and Optical Communications Conference (WOCC), 2019
Routing and spectrum allocation (RSA) is one of the key problems in EONs since bandwidth fragmentation generated by establishing the connection dynamically. In this work, we propose a routing and spectrum allocation algorithm based on Maximum Spectrum Completeness (MSC) which selected the completely contiguous frequency of the light-path and avoiding ...
Jingwen Zhang +4 more
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Routing and spectrum allocation (RSA) is one of the key problems in EONs since bandwidth fragmentation generated by establishing the connection dynamically. In this work, we propose a routing and spectrum allocation algorithm based on Maximum Spectrum Completeness (MSC) which selected the completely contiguous frequency of the light-path and avoiding ...
Jingwen Zhang +4 more
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Joint Routing and Spectrum Assignment Algorithm in Cognitive Radio Networks
Advanced Materials Research, 2011Aiming to the shortcoming of traditional route protocols in cognitive radio networks, joint cognitive routing and spectrum assignment (JCRSA) algorithm was proposed. According to the characteristic of cognitive network, the most capacity channel is selected as communication channel on every link, and JCRSA calculates the transmission delay on every ...
Zhan Jun Liu +2 more
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Dynamic Routing and Spectrum Assignment in Flexible Optical Path Networks
Optical Fiber Communication Conference/National Fiber Optic Engineers Conference 2011, 2011We propose dynamic routing and spectrum assignment algorithms for bitrate-flexible lightpaths in OFDM-based optical networks. The novel algorithms enable dynamic spectrum assignment with more efficient resource utilization and less traffic blockings.
Xin Wan +4 more
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Routing, Spectrum and Core Assignment on SDM Optical Networks (Invited)
Optical Fiber Communication Conference, 2016Simple and flexible RSCA methods in SDM networks are proposed. They introduce Prioritized Area concept, and two kinds of crosstalk-awareness; Strict Constraint and Best-Effort approaches, and extend/compensate their performance by MIMO based approach.
Hideki Tode, Yusuke Hirota
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Crosstalk-aware Routing and Spectrum assignment in flexible grid networks
2016 IEEE Symposium on Computers and Communication (ISCC), 2016This work presents algorithms for the design phase of flexible grid optical networks considering the impact of in-band channel crosstalk. Due to crosstalk-induced interactions among different connections, malicious high-power signals can potentially spread widely in the network.
Manousakis, K. +3 more
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