caa a22 4500 445870737 CHVBK 20180317145510.0 cr unu---uuuuu 170323e20111201xx s 000 0 eng 10.1007/s11107-011-0326-y doi (NATIONALLICENCE)springer-10.1007/s11107-011-0326-y Uniform waveband assignment in optical mesh networks [Elektronische Daten] [Majid Alnaimi, Onur Turkcu, Suresh Subramaniam] The cost of an optical network in wavelength division multiplexing (WDM) networks can be reduced using optical reconfigurable optical add/drop multiplexers (ROADMs), which allow traffic to pass through without the need for an expensive optical-electro-optical (O-E-O) conversion. Waveband switching (WBS) is another technique to reduce the network cost by grouping consecutive wavelengths and switching them together using a single port per waveband. WBS has attracted the attention of researchers for its efficiency in reducing switching complexity and therefore cost in WDM optical networks. In this paper, we consider the problem of switching wavelengths as non-overlapping uniform wavebands, per link, for mesh networks using the minimum number of wavebands. Given a fixed band size b s , we give integer linear programming formulations and present a heuristic solution to minimize the number of ROADMs (number of wavebands) in mesh networks that support a given traffic pattern. We show that the number of ROADMs (or number of ports in band-switching cross-connects) can be reduced significantly in mesh networks with WBS compared to wavelength switching using either the ILP or the heuristic algorithm. We also examine the performance of our band assignment algorithms under dynamic traffic. Springer Science+Business Media, LLC, 2011 Waveband switching nationallicence ROADM nationallicence WDM optical networks nationallicence Switching complexity nationallicence Alnaimi Majid Department of Electrical and Computer Engineering, The George Washington University, 20052, Washington, DC, USA aut Turkcu Onur Department of Electrical and Computer Engineering, The George Washington University, 20052, Washington, DC, USA aut Subramaniam Suresh Department of Electrical and Computer Engineering, The George Washington University, 20052, Washington, DC, USA aut Photonic Network Communications Springer US; http://www.springer-ny.com 22/3(2011-12-01), 266-275 1387-974X 22:3<266 2011 22 11107 https://doi.org/10.1007/s11107-011-0326-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11107-011-0326-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Alnaimi Majid Department of Electrical and Computer Engineering, The George Washington University, 20052, Washington, DC, USA aut NATIONALLICENCE 700 1- Turkcu Onur Department of Electrical and Computer Engineering, The George Washington University, 20052, Washington, DC, USA aut NATIONALLICENCE 700 1- Subramaniam Suresh Department of Electrical and Computer Engineering, The George Washington University, 20052, Washington, DC, USA aut NATIONALLICENCE 773 0- Photonic Network Communications Springer US; http://www.springer-ny.com 22/3(2011-12-01), 266-275 1387-974X 22:3<266 2011 22 11107 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer