NDLI: QoS performance of OBS in WDM/TDM networks

Content Provider	IEEE Xplore Digital Library
Author	Das, A. Chakraborty, S. Das, A.K.
Copyright Year	2009
Description	Author affiliation: Guru Nanak Institute of Technology, Kolkata-700 114, India (Das, A.; Chakraborty, S.; Das, A.K.)
Abstract	We discuss the requirement of basic quality of service (QoS) in optical burst switched WDM networks considering their delay and loss probability. Low delay and reducing burst overlap in the electronic domain of an ingress node reduces burst loss, and hence improves (QoS). A simplified mathematical model for delay versus traffic loads considering both low and heavy traffic conditions is developed. In optical domain we have studied the delay characteristics for the offset-time-based scheme with fiber delay lines (FDLs). The minimum delay zone is shown considering the variation of channel capacity C, burst size B, offset time depending on degree of isolation, burst overlapping parameters, and token round trip time R in a metropolitan area network (MAN). Finally, numerical calculation and simulations in priority queue management for different class of service (CoS) show the results are very close, thus validating our approximate delay model. The results show the reduction for higher priority packet latency and the conditions so that low priority packets are not severely dropped.
Starting Page	1
Ending Page	5
File Size	583987
Page Count	5
File Format	PDF
ISBN	9781424447046
DOI	10.1109/WOCN.2009.5010516
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-04-28
Publisher Place	Egypt
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	quality of service (QoS) Quality of service Telecommunication traffic WDM networks Optical fiber networks Wavelength division multiplexing Time division multiplexing class isolation burst overlap reduction Delay Optical losses Optical burst transport (OBT) delay characteristics and priority metropolitan area network (MAN) Traffic control Mathematical model
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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