caa a22 4500 445870958 CHVBK 20180317145511.0 cr unu---uuuuu 170323e20110201xx s 000 0 eng 10.1007/s11107-010-0284-9 doi (NATIONALLICENCE)springer-10.1007/s11107-010-0284-9 On service provisioning using light-trails in WDM optical networks with waveband switching [Elektronische Daten] [Xubin Luo, Bin Wang] As the number of wavelengths in a single optical fiber increases, so does the number of ports needed for wavelength switching in optical cross-connects (OXCs), which may significantly increase the cost and difficulty associated with controlling large OXCs. Waveband switching (WBS) treats several wavelengths as a bundle that is switched through a single port if they share the same switch route, so that the number of ports needed can be reduced. On the other hand, light-trails in wavelength division multiplexing (WDM) optical networks allow intermediate nodes on established optical paths to access the data paths whereas light-paths only allow two end nodes to access the data paths. Therefore, light-trails offer significantly better flexibility for service provisioning and traffic grooming. In this article, we study service provisioning using light-trails in WDM optical networks with the WBS capability under a static traffic model. For comparison, integer linear programs are formulated for establishing light-trails with and without WBS. Numerical studies show that in certain cases, service provisioning with WBS in light-trail networks can reduce the number of ports needed while providing a more flexible sub-wavelength service provisioning capability. However, contrary to intuition, in most cases applying the WBS technique requires more ports in OXCs in light-trail networks. This study provides insights into the network design problem that applies the WBS technology to light-trail based optical networks. Springer Science+Business Media, LLC, 2010 Light-trail nationallicence Waveband switching nationallicence Sub-wavelength service provisioning nationallicence Integer linear programming nationallicence Luo Xubin Southwestern University of Finance and Economics, Chengdu, China aut Wang Bin Wright State University, Dayton, OH, USA aut Photonic Network Communications Springer US; http://www.springer-ny.com 21/1(2011-02-01), 97-105 1387-974X 21:1<97 2011 21 11107 https://doi.org/10.1007/s11107-010-0284-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11107-010-0284-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Luo Xubin Southwestern University of Finance and Economics, Chengdu, China aut NATIONALLICENCE 700 1- Wang Bin Wright State University, Dayton, OH, USA aut NATIONALLICENCE 773 0- Photonic Network Communications Springer US; http://www.springer-ny.com 21/1(2011-02-01), 97-105 1387-974X 21:1<97 2011 21 11107 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer