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Dynamic grooming and RWA in translucent optical networks using a time-slotted ILP

X. Wang, M. Brandt-Pearce, S. Subramaniam
2012 2012 IEEE Global Communications Conference (GLOBECOM)  
The traffic is served in a time-slotted fashion so that the network throughput is optimized at each time slot given the existing network state.  ...  Our work combines these two approaches and solves a real-time dynamic traffic scenario with integer linear programming (ILP), seeking to maximize the overall network throughput.  ...  In order to solve the network operation problem for dynamic real-time traffic and find a solution closer to the optimal solution, we propose to solve an ILP in a time-slotted fashion: for each time slot  ... 
doi:10.1109/glocom.2012.6503573 dblp:conf/globecom/WangBS12 fatcat:hkvmqbvi3ve3xpcefr76w4zcia

A Survey of Advance Reservation Routing and Wavelength Assignment in Wavelength-Routed WDM Networks

Neal Charbonneau, Vinod M. Vokkarane
2012 IEEE Communications Surveys and Tutorials  
In this paper we provide a comprehensive survey of the past and current work on advance reservation for optical networks.  ...  It can be used to provide high-bandwidth services such as video conferencing and in Grid applications requiring the scheduled distribution of large files and for co-allocation of network and grid resources  ...  ILP formulations are provided for the electronic and optical grooming problems. VI.  ... 
doi:10.1109/surv.2011.111411.00054 fatcat:di7cxeobgrfmdoavasdiguqona

Traffic grooming in WDM networks: past and future

R. Dutta, G.N. Rouskas
2002 IEEE Network  
Traffic grooming refers to techniques used to combine low-speed traffic streams onto highspeed wavelengths in order to minimize the networkwide cost in terms of line terminating equipment and/or electronic  ...  In this article we formally define the traffic grooming problem, and we provide a general formulation that captures the features of a wide range of problem variants.  ...  Since grooming usually refers to the appropriate use of hybrid optical and electronic routing, this is a "no grooming" solution.  ... 
doi:10.1109/mnet.2002.1081765 fatcat:malya4pzgvewznefcaaqtwgnya

Path Protection in Translucent WDM Optical Networks [chapter]

Q. Rahman, Subir Bandyopadhyay, Ataul Bari, Arunita Jaekel, Y. P. Aneja
2010 Lecture Notes in Computer Science  
This result may be used to pre-calculate the result and use it as input to ILP-2 to solve the RWA problem and RRP optimization.  ...  Within a WAN, the distance the signal travels over optical fibers is becoming a key issue and translucent optical networks are being used for long-haul data communication.  ... 
doi:10.1007/978-3-642-11322-2_38 fatcat:x2tonhspcjeuff64fofog6wqtm

A survey on physical layer impairments aware routing and wavelength assignment algorithms in optical networks

Siamak Azodolmolky, Mirosław Klinkowski, Eva Marin, Davide Careglio, Josep Solé Pareta, Ioannis Tomkos
2009 Computer Networks  
In translucent architectures a small amount of regeneration (e.g. optical-electronic-optical conversion) is available in the network.  ...  t r a c t Optical networks are moving from opaque and translucent architectures towards all-optical (transparent) architectures.  ...  Acknowledgements The work described in this paper was carried out with the support of the BONE-project (''Building the Future Optical Network in Europe"); a Network of Excellence funded by the European  ... 
doi:10.1016/j.comnet.2008.11.014 fatcat:jlkqgqupzjetjbr7ssl7y4jyyy

A Survey of Minimum Wavelength Conversion Routing and Wavelength Assignment in WDM Networks

Rakesh Agarwal, Laxmi Singh
2020 Zenodo  
In this paper we give a complete study of the past and current work on booking ahead of time for optical organizations.  ...  AR has a few significant applications for both wide-region networks and Grid networks.  ...  In this work the authors present an ILP, with a time-slotted network, that finds the optimal solution for a request set with the objective of accepting the maximum number of requests.  ... 
doi:10.5281/zenodo.4040620 fatcat:gq7bmja3zrajtdl5g4zdxjtj3i

Energy-Aware Scheduling and Resource Allocation for Periodic Traffic Demands

Ying Chen, Arunita Jaekel
2013 Journal of Optical Communications and Networking  
[81] also investigate the dynamic traffic grooming problem and present an energy aware algorithm for lightpath provisioning in WDM optical networks.  ...  They solve the RWA problem using the lightpath segmentation and switching technique where a connection is allowed to be switched to another lightpath during different time slots.  ...  The sorting can be done in Hence, PHASE 2, and therefore, the overall time complexity of H-SSD is polynomial in |Q|. In contrast, the complexity of the corresponding ILPs is exponential.  ... 
doi:10.1364/jocn.5.000261 fatcat:xgy5icn35fgcthdxodxqicmifi

Impairment-aware routing in translucent spectrum-sliced elastic optical path networks

Song Yang, Fernando Kuipers
2012 2012 17th European Conference on Networks and Optical Communications  
In this paper we study the impairment-aware dynamic routing and subcarrier allocation problem in translucent SLICE networks.  ...  Spectrum-sliced elastic optical path (SLICE) technology offers a more flexible bandwidth allocation in optical networks than wavelength division multiplexing.  ...  Routing and Wavelength Assignment (RWA) is a typical and fundamental problem in WDM optical networks and the analogous problem in SLICE is referred to as the Routing and Subcarrier Allocation (RSA) problem  ... 
doi:10.1109/noc.2012.6249946 fatcat:uyjvvri2h5bbfmwesb4rqzqqle

Physical layer impairment aware routing (PLIAR) in WDM optical networks: issues and challenges

Chava Saradhi, Suresh Subramaniam
2009 IEEE Communications Surveys and Tutorials  
In WDM optical networks, the physical layer impairments (PLIs) and their significance depend on network type-opaque, translucent, or transparent; the reach-access, metro, or core/long-haul; the number  ...  Introducing optical transparency in the physical layer on one hand leads to a dynamic, flexible optical layer with the possibility of adding intelligence such as optical performance monitoring, fault management  ...  ACKNOWLEDGMENT Chava Vijaya Saradhi would like to thank his colleagues, Andrea Zanardi, Elio Salvadori, and EU-IST DICONET project partners for technical discussions and valuable inputs.  ... 
doi:10.1109/surv.2009.090407 fatcat:zttsppajejeo7mfdtyhldq7fti

A Survey on the Path Computation Element (PCE) Architecture

Francesco Paolucci, Filippo Cugini, Alessio Giorgetti, Nicola Sambo, Piero Castoldi
2013 IEEE Communications Surveys and Tutorials  
Moreover, TE visibility is limited in many network scenarios, such as multi-layer, multidomain and multi-carrier networks, and it may negatively impact resource utilization.  ...  In this work, packet (i.e., MPLS-TE and MPLS-TP) and wavelength/spectrum (i.e., WSON and SSON) switching capabilities are the considered technological platforms, in which the PCE is shown to achieve a  ...  Consequently, in flex-grid optical networks (also referred to as spectrum switched optical networks-SSON), the problem of RWA is replaced with the problem of routing and spectrum assignment (RSA).  ... 
doi:10.1109/surv.2013.011413.00087 fatcat:ncgex62e2vhyvcnbxpjjr3bynq

A Survey on Energy-Aware Design and Operation of Core Networks

Filip Idzikowski, Luca Chiaraviglio, Antonio Cianfrani, Jorge Lopez Vizcaino, Marco Polverini, Yabin Ye
2016 IEEE Communications Surveys and Tutorials  
We consider a multi-layer architecture, in which the optical layer can be realized either with a Wavelength Division Multiplexing (WDM) network or an Elastic Optical Network (EON).  ...  (SDN) and EON, and (4) a radical improvement in the testbed implementations.  ...  RWA algorithms used for planning of WDM networks are no longer valid when moving to EON due to the contiguous allocation constraint (subcarriers of a channel must be assigned in a contiguous manner) and  ... 
doi:10.1109/comst.2015.2507789 fatcat:ogif46h25vg6xetc6rkzf7nhha

Intelligent protocols for access and backbone networks

Κωνσταντίνος Α. Κυριακόπουλος
2018
Optical computer networks provide the means for reliable data communications with low transmission and propagation delay, low error rate, and at the same time, high throughput.  ...  On the other hand, optical access networks intermediate between end-user units and the backbone, covering the last mile of connectivity.  ...  To define dynamic grooming in elastic optical networks, the following notations are used. A graph structure represents the network topology.  ... 
doi:10.26262/heal.auth.ir.300297 fatcat:77roqmyiazdvroqynx5gskx26u

Energy-aware adaptive routing solutions in IP-over-WDM networks [article]

Filip Idzikowski, Technische Universität Berlin, Technische Universität Berlin, Adam Wolisz
2014
A Static Base Network (SBN) is used as a starting point for EA-ARSs. The SBN [...]  ...  Traffic varies over time giving an opportunity to switch off or put into standby mode a subset of network devices in order to save energy in low-demand hours.  ...  In the first step of PA-RWA called Load Based Cost (LBC), a shortest path algorithm solves the routing subproblem using a dynamic load-dependent function to associate a weight to each optical fiber link  ... 
doi:10.14279/depositonce-4113 fatcat:misb677d5fffthmkt2nk7jvmsa