Linear Formulation To Avoid Adjacent Channel Interference In Ltd Of Optical Networks

A strategy is implemented for solving the Logical Topology Design (LTD) based on a Linear Formulation (LP) with channel interference constraints. The formulation is able to provide excellent solutions. In traditional LTD Problem there is no a-priori knowledge of channel use and once the solution has been implemented the interference cannot be avoided. Taking into consideration the effects of adjacent channel interference, we extend the traditional formulation as a set of analytical formulas as additional constraints on LTD. © 2010 COPYRIGHT SPIE - The International Society for Optical Engineering.7959The Society of Photo-Optical Instrumentation Engineers (SPIE)Dutta, R., Rouskas, G., A Survey of Virtual Topology Design Algorithms for Wavelength Routed Networks (2000) Optical Networks (SPIE), 1 (1), pp. 73-89. , JanuaryZang, H., Jue, J.P., Mukherjee, B., A Review of Routing and Wavelength Assignment Approaches for Wavelength-Routed optical WDM Networks (2000) Optical Networks Magazine, 1, pp. 47-60. , JanDeng, T., Subbramaniam, S., Xu, J., Crosstalk-Aware are Wavelength Assignment in Dynamic Wavelength Routed Optical Networks Pr Proc. Broadn Dnets, 2004Manousakis, K., Christodoulopolos, K., Varvarigos, E., Avoiding Adjacent Channel Interference in Static RWA CSNDSP08He, J., Brandt-Pearce, M., QoT-Aware are Routing in Impairment-Constrained Optical Networks (2007) IEEE GLOBECOM, pp. 2269-2274. , NovKrishn Shnaswamy, R., Sivara Arajan, K., Design of Logical Topologies: A Linear Formulation for Wavelength Routed Optical Networks with No Wavelength Changers (2001) IEEE Trans. Networking, 9 (2), pp. 186-198Ramaswami, R., Sivarajan, K.N., Design of Logical Topologies for Wavelength-Routed All Optical Networks (1996) IEEE/JSAC, 14, pp. 840-851. , JuneRamaswami, R., Optical Networking Technologies: What Worked and What Didn't (2006) IEEE Communications Magazine, pp. 132-139. , Septembe

Practical Physical Topology Design For Optical Networks

Traditional approaches to wavelength routing network design divide it into two separate problems: virtual topology design (VTD), in which best connections among nodes are derived from traffic demand; and routing-and-wavelength assignment (RWA) or Physical Topology Design (PTD), in which physical paths are accommodated in the physical topology to support the requested connections. We presented an Integer Linear Program for solving the PTD or Routing and Wavelength Assignment problem in All Optical Networks with Wavelength Conversion. The approach is executed on a random mesh in Brazilian Territory. The performance is studied for two traffic matrixes.913917Ramaswami, R., Sivarajan, K.N., (1998) Optical Networks: A Practical Perspective, , Morgan Kaumann Publishers, ISBN 1-55860-445-6, San Francisco, USACahn, R.S., (1998) Wide Area Network Design: Concepts and Tools for Optimization, , Morgan Kaumann Publishers, ISBN 1-55860-458-8, San Francisco, USABanerjee, D., Mukherjee, B., Pratical approaches for routing and wavelength Wavelength assignment in large all-optical wavelength-routed networks (1996) IEEE Journal on Selected Areas in Communications, 14 (5), pp. 903-908. , JuneSwaminathan, M.D., Sivarajan, K.N., Practical Routing and Wavelenth Assignment algorithms for All Optical networks with Limited Wavelength Conversion ICC 2002Zang, H., Jue, J.P., Mukherjee, B., A Review of Routing and Wavelength-Routed Optical WDM Networks (2000) Optical Networks, 1, pp. 47-60. , JaneiroAssis, K.D.R., Waldman, H., Calmon, L.C., Virtual Topology Design for a Hypothetical Optical Network (2001) Proceedings of WDM and Photonic Switching Device for Network Applications II, Part of Photonics West, 4289, pp. 65-73. , 20-26 January, San Jose, CaDutta, R., Roukas, G.N., Survey of Virtual Topology Design Algorithms for Wavelength-routed Optical Networks (2000) Optical Networks, 1, pp. 73-88. , Janeirohttp://www.tidia.fapesp.brRamaswami, R., Sivarajan, K.N., Design of logical topologies for wavelength-Routed All Optical Networks (1996) IEEE/JSAV, 14, pp. 840-851. , JuneKrishnaswamy, R.R.M., Sivarajan, K.M., Design of Logical Topologies: A Linear Formulation for Wavelength-Routed Optical Networks with No Wavelength Changers (2001) IEEE/ACM Transactions on Networking, 9 (2). , Apri

Iterative Optimization In Vtd To Maximize The Open Capacity Of Wdm Networks

We propose an iterative algorithm for the Virtual Topology Design (VTD) in optical networks. The algorithm eliminates lighter traffic lightpaths and re-arrange the traffic through the remaining lightpaths. This tries to preserve the open capacity for the accommodation of future unknown demands. The results suggest that it is feasible to preserve enough open capacity to avoid blocking of future requests in networks with scarce resources; this is, maximize the traffic scaling. © Springer-Verlag 2004.3124735742Mannie, E., (2003) Generalized Multi-Protocol Label Switching Architecture, , draft-ietf-ccampgmpls-architecture-07, MarchLang, J., Link Management Protocol (LMP), , draft-ietf-ccamp-lmp-10, October 03Architecture for the Automatically Switched Optical Network (ASON), , ITU-T Rec. G.8080/Y.1304(2001) User Network Interface (UNI) 1.0 Signaling Specification, , Optical Networking Forum, OctoberFredette, A., (2003) Link Management Protocol (LMP) for Dense Wavelength Division Multiplexing (DWDM) Optical Line Systems, , draft-ietf-ccamp-lmp-wdm-02, MarchLang, J., Papadimitriou, D., (2003) SONET/SDH Encoding for Link Management Protocol (LMP) Test Messages, , draft-ietf-ccamp-lmp-test-sonet-sdh-03, MayDubuc, M., (2003) Link Management Protocol Management Information Base, , draft-ietfccamp-lmp-mib-07, OctoberAboul-Magd, O., (2003) A Transport Network View to LMP, , draft-aboulmagd-ccamptransport-lmp-01, JuneOperations Application Messages - Language for Operations Application Messages, , Telcordia, GR-831Rising, L., (2001) Design Patterns in Communication Software, , Cambridge University Press, UKGamma, E., (1998) Design Patterns: Elements of Reusable Object-Oriented Software, , Addison-Wesley, HollandLynch, N.A., (1997) Distributed Algorithms, , Morgan Kaufmann Publishers, Inc., CAKompella, K., (2003) Link Bundling in MPLS Traffic Engineering, , draft-ietf-mpls-bundle-04, JanuaryFox, B., Virtual Private Networks Identifier Internet RFC, 2685, p. 99. , SeptemberStevens, W.R., Maximum UDP Datagram Size (1994) TCP/IP Illustrated, 1. , Addison-WesleyJerram, N., Farrel, A., (2001) MPLS in Optical Networks, p. 33. , Data Connection, Enfield, UK, OctoberBanerjee, A., Generalized Multiprotocol Label Switching: An overview of Routing and Management Enhancements (2001) IEEE Communications Magazine, , Januar

Iterative Virtual Topology Design To Maximize The Traffic Scaling In Wdm Networks

We propose an iterative algorithm for the Virtual Topology Design (VTD) in optical networks. The algorithm eliminates lighter traffic lightpaths and rearranges the traffic through the remaining lightpaths. This tries to preserve the open capacity for the accommodation of future unknown demands. The results suggest that it is feasible to preserve enough open capacity to avoid blocking of future requests in networks with scarce resources, this is, maximize the traffic scaling. © 2005 IEEE.200204Barbado, L., Maier, G., Maximum traffic scaling in WDM networks optimized for an inicial static load (2003) ONDM 2003, 1, pp. 41-60. , February 3-5. Budapest, Hungary(1990) Architechture of Optical Transport Networks, (G.872)(2001) Network Node Interface for the Optical Transport Network (OTN), (G.709)Ozdalgar, A.E., Bertsekas, D.P., (2003) Routing and Wavelength Assisnment in Optical Networks IEEE/ACM Transactions on Networking, 11 (2). , aprilRamaswami, R., Sivarajan, K.N., Design of logical topologies for wavelength-routed all optical networks (1996) IEEE/JSAC, 14, pp. 840-851. , JuneGencata, A., Mukherjee, B., Virtual topology adaptation for WDM mesh networks under dynamictraffic (2002) Proc., IEEE Infocom 2002, pp. 48-56. , New York, JuneKodialam, M., Laksshman, T.V., Integrated dynamic IP and wavelength routing in IP over WDM networks (2001) Proc. IEEE INFOCOMAssis, K.D.R., Waldman, H., Approaches to maximize the open capacity of optical networks (2004) Ghent -Belgium ONDM 04, 1, pp. 599-618. , Ghent Belgium,februaryRamaswami, R., Sivarajan, K.N., (1998) Optical Networks: A Practical Perspective, , Morgan Kaufmann PublishersRamaswami, R., Sivarajan, K.N., Routing and wavelength assignment in all-optical networks (1995) IEEE/ACM Transactions on Networking, pp. 489-500. , OctAssis, K.D.R., Iterative optimization in VTD to maximize the open capacity of optical networka Procedings of ICT04, , Fortaleza-CE. Brazi

How Many Lightpaths We Need Today And How Many Lightpaths We Will Need Tomorrow

We propose a linear formulation and an iterative heuristic for the Logical Topology Design (LTD) in optical networks. The formulation maximizes the number of remaining available routes, trying to preserve the open capacity for the accommodation of future unknown demands. The heuristic routes foreseen traffic through the previously set up routes and also the remaining "dark" lightpaths. The results suggest that it is feasible to preserve enough open capacity to avoid blocking of future requests in networks with scarce resources.303176179Ramaswami, R., Optical Networking Technologies: What Worked and What Didn't (2006) IEEE Communications Magazine, pp. 132-139Ramaswami, R., Sivarajan, K.N., Design of Logical Topologies for Wavelength-Routed All Optical Networks (1996) IEEE/JSAC, 14, pp. 840-851Tran, P.N., Killat, U., Design of Logical Topology for IP over WDM Networks Performance vs. Resources Utilization (2007) International Network Optimization Conference INOC, , Spa, Belgiu

Efficient Traffic Routing For Current And Future Demands In Optical Networks

We propose a linear formulation for traffic routing in optical networks after the Virtual Topology Design (VTD). The formulation maximizes the amount of traffic the network is able to accept, through minimizing the residual capacity in established lightpaths. The results suggest that it is feasible to preserve enough open capacity to avoid disruption of connections and blocking of future traffic demands in networks with scarce resources. © 2009 IEEE.Ramaswami, R., Sivarajan, K.N., Design of logical topologies for wavelength-routed all optical networks (1996) IEEE/JSAC, 14, pp. 840-851. , JuneSkorin-Kapov, N., Routing and wavelength assignment in optical networks using bin packing based algorithms (2007) Europ. J. Op. Res, 177 (2), pp. 1167-1179. , MarchLisser, J., Gondzio, A., Ouorou, J.-P.V., Capacity planning under uncertain demand in telecommunications networks, (1999) TR 99.13, , Logilab, University of GenevaSen, S., Doverspike, R., Cosares, S., Network planning with random demand (1994) Telecommunication Systems, 3, pp. 11-30Ben-Ameur, W., Kerivin, H., Routing of uncertain traffic demands (2005) Optimization and Engineering, 3, pp. 283-313Italiano, G.F., Leonardi, S., Oriolo, G., Design of networks in the hose model, (2002) Proc. International Workshop on Approximation and Randomization Algorithms in Communication Networks, pp. 65-76. , Carleton Scientific Pres

Virtualisation of optical networks utilising squeezing protection : the exact formulation

Elastic optical network (EON) is a new technology used for virtualisation of optical networks. In this Letter, a new linear formulation with protection is proposed for the design of EON networks with several virtual optical networks (VONs). The mixed integer linear programming (MILP) formulation integrates the concepts of bandwidth squeezing, grooming and modulation format, and allows different protection capability in each VON. The proposed MILP provides efficient survivability results and resource savings (in terms of the spectrum) for a complete design of EON with virtualisation55201098110