Congestion Resolution in Optical Burst/Packet Switching with Limited Wavelength Conversion

This paper proposes a methodology to compare scheduling algorithms for congestion resolution in Optical Burst Switching or Optical Packet Switching networks, focusing on the issue of wavelength conversion capabilities. The performance of such algorithms when full wavelength conversion is available at the switching nodes are compared with the case of conversion capabilities over a limited range of wavelengths. The results presented show that limited range wavelength conversion is not necessarily performing worse than full wavelength conversion, as long as the correct terms of comparison are considered

Optical Packet/burst Switching Node Architecture With Wdm Hierarchical Issues

Applications with optical packet switching (OPS and OBS) offer potentially large capacity due to significant increase in optical channel granularity and use. Thus, simulation studies on optical packet/burst switching node architectures, as presented here, are an important strategy to evaluate new designs, joined with provision of quality of service (QoS) and differentiated traffic support. This work presents an innovative node architecture for both OPS/OBS metro-access optical nodes, which has issues on WDM for the hierarchical network core integration. © 2007 IEEE.351355Barbosa, F.R., Maia, D., Pezzolo, L., Sachs, A.C., Salvador, M.R., Optical Packet Switching Node for Metro-Access Networks (2003) Proceed. 29th. ECOC'2003, , paper PD-160, Rimini, Italia, SeptemberBonani, L.H., Barbosa, F.R., Moschim, E., Fully Optimized Mesh Topologies for Optical Packet Switching Network Architectures (2006) Proceed. ICT 2006, , Madeira, PortugalMayMartins, I.B., Bonani, L.H., Dynamic Traffic Analysis of Metro Access Optical Packet Switching Networks having Mesh Topologies (2006) Proceed. of the Int. ITS'2006, , Brazil, SeptEvolutionary Computation 1: Basic Algorithms and Operators (2000) IOP Publishing, , eds, New York USAXiong, Y., Control architecture in optical burst-switched WDM networks (2000) IEEE Journal on Selected Areas in Communications, 18 (10), pp. 1838-1851Tancevski, L., Optical routing of asynchronous, variable length packets (2000) IEEE Journal on Selected Areas in Communications, 18 (10), pp. 2084-2093Callegati, F., Cerroni, W., Corazza, G., Optimization of Wavelength Allocation in WDM Optical Buffers (2001) Optical Networks Magazine, 2 (6), pp. 66-72Callegati, F., Cerroni, W., Bonani, L.H., Congestion Resolution in Optical Burst/Packet Switching with Limited Wavelength Conversion (2006) Proceed. GlobeCom 2006, , San Francisco, USA, November-DecemberYoo, S.J.B., Wavelength Conversion Technologies for WDM Network Applications (1996) Journal of Lightwave Technology, 14 (6), pp. 955-966. , Jun