Virtual-topology adaptation for mixed-line-rate optical WDM networks under dynamic traffic

In the mixed-line-rate (MLR) wavelength-division multiplexing (WDM) networks, each wavelength of fiber can provide different bandwidths (in 10/40/100 Gbps) by using different modulation types. Since the MLR-WDM technique is becoming the key and a cost-efficiency technique for the network upgrading, the problem for supporting virtual topology reconfiguration (VTR) becomes a very important issue. In this paper, the VTR problem for a MLR-WDM network is studied under dynamic traffic demand. By monitoring traffic of the lightpaths, a heuristic adaptation method is proposed to follow the changes in traffic without a priori knowledge of the future traffic pattern. The proposed can achieve the load balances by either adjusting (increasingly or decreasingly), adding or deleting one or more lightpaths at a time. Simulation experiments employing the adaptation algorithm on realistic network scenarios reveal interesting effects of the various system parameters. Specifically, we find that this method adapts very well to the changes in the offered traffic on MLR-WDM networks.

[1]  George N. Rouskas,et al.  A Survey of Virtual Topology Design Algorithms for Wavelength Routed Optical Networks , 1999 .

[2]  Piet Demeester,et al.  Optical networking: past, present and future , 2000 .

[3]  N Sambo,et al.  Modeling and Distributed Provisioning in 10–40–100-Gb/s Multirate Wavelength Switched Optical Networks , 2011, Journal of Lightwave Technology.

[4]  A. Nag,et al.  Energy-efficient and cost-efficient capacity upgrade in mixed-line-rate optical networks , 2012, IEEE/OSA Journal of Optical Communications and Networking.

[5]  Biswanath Mukherjee,et al.  Optical network design with mixed line rates and multiple modulation formats , 2009, 2009 Conference on Optical Fiber Communication - incudes post deadline papers.

[6]  David Eppstein,et al.  Finding the k shortest paths , 1994, Proceedings 35th Annual Symposium on Foundations of Computer Science.

[7]  Massimo Tornatore,et al.  Optical network design with mixed line rates , 2009, Opt. Switch. Netw..

[8]  A. Lord,et al.  Optimizing the Migration of Channels With Higher Bitrates , 2009, Journal of Lightwave Technology.

[9]  N. Zulkifli,et al.  Moving Towards Upgradeable All-Optical Networks through Impairment-aware RWA Algorithms , 2007, OFC/NFOEC 2007 - 2007 Conference on Optical Fiber Communication and the National Fiber Optic Engineers Conference.

[10]  A. Klekamp,et al.  Energy and Cost Efficiency of Adaptive and Mixed-Line-Rate IP Over DWDM Networks , 2012, Journal of Lightwave Technology.

[11]  Biswanath Mukherjee,et al.  Degraded Service Provisioning in Mixed-Line-Rate WDM Backbone Networks Using Multipath Routing , 2014, IEEE/ACM Transactions on Networking.

[12]  S. Chandrasekhar,et al.  Impact of Channel Plan and Dispersion Map on Hybrid DWDM Transmission of 42.7-Gb/s DQPSK and 10.7-Gb/s OOK on 50-GHz Grid , 2007, IEEE Photonics Technology Letters.

[13]  Zsigmond Szilárd,et al.  Mixed line rate virtual topology design considering nonlinear interferences between amplitude and phase modulated channels , 2011, Photonic Network Communications.

[14]  M. Tornatore,et al.  New Strategies for Connection Protection in Mixed-Line-Rate Optical WDM Networks , 2011, IEEE/OSA Journal of Optical Communications and Networking.

[15]  Biswanath Mukherjee,et al.  Virtual-topology adaptation for WDM mesh networks under dynamic traffic , 2003, TNET.