DocumentCode :
982199
Title :
Logical topology design for dynamic traffic grooming in WDM optical networks
Author :
Xin, Chunsheng ; Wang, Bin ; Cao, Xiaojun ; Li, Jikai
Author_Institution :
Dept. of Comput. Sci., Norfolk State Univ., VA, USA
Volume :
24
Issue :
6
fYear :
2006
fDate :
6/1/2006 12:00:00 AM
Firstpage :
2267
Lastpage :
2275
Abstract :
Traffic grooming in optical networks refers to consolidation of subwavelength client connections onto lightpaths. Depending on whether client connections are given in advance or randomly arrive/depart, traffic grooming is classified as static and dynamic. Dynamic traffic grooming has been traditionally performed through establishing/releasing lightpaths online. In this paper, the authors propose an alternate approach to design a static logical topology a priori and then route randomly arriving client connections on it to avoid frequent lightpath setup/teardown. Two problems are considered: 1) minimize resource usage constrained by traffic blocking requirements and 2) maximize performance constrained by given resources. These are formulated as integer linear-programming (ILP) problems. The numerical results show that the resource usage dramatically decreases when the blocking requirement is relaxed, and the grooming performance slowly increases when given more resources. In addition, the number of ports at client nodes has more profound impact on traffic grooming than the number of wavelengths.
Keywords :
optical fibre networks; telecommunication network routing; telecommunication network topology; telecommunication traffic; wavelength division multiplexing; WDM; client connections; client nodes; dynamic traffic grooming; integer linear-programming; lightpath; logical topology design; optical network routing; optical networks; static logical topology; subwavelength client connections; traffic blocking; Bandwidth; Circuits; Computer science; Intelligent networks; Network topology; Optical design; Optical fiber networks; Telecommunication traffic; WDM networks; Wavelength division multiplexing; Dynamic traffic grooming; logical topology design; wavelength-division-multiplexing (WDM) optical networks;
fLanguage :
English
Journal_Title :
Lightwave Technology, Journal of
Publisher :
ieee
ISSN :
0733-8724
Type :
jour
DOI :
10.1109/JLT.2006.874562
Filename :
1643782
Link To Document :
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