NDLI: Design of an ultra fast pipelined wavelength scheduler for optical burst switching

Content Provider	Springer Nature Link
Author	Chen, Yuhua Turner, Jonathan S. Zhai, Zhi
Copyright Year	2007
Abstract	Optical Burst Switching (OBS) is an emerging technology that allows variable size data bursts to be transported directly over DWDM links without encountering O/E/O conversion. In OBS, before the transmission of a data burst, a burst header is transmitted through an electronic control path, setting up and tearing down optical paths on-the-fly. Data bursts can remain in the optical domain and pass through the OBS network transparently. Unfortunately, system performance will be greatly degraded, if burst scheduling requests cannot be processed in time. This article quantitatively studied the negative impact of control path overloading on the performance of OBS networks. Results have shown that control path overloading greatly affects the performance of the OBS routers, especially for systems with large WDM channel counts. In order to remove this performance bottleneck, we have designed and implemented an ultra fast pipelined burst scheduler that is able to process a burst request every two clock cycles, regardless of the number of WDM channels per link. The design has been implemented in Verilog HDL and synthesized to FPGAs. Circuit level simulation results confirm the correctness of the design. The circuit has achieved 100 MHz in Altera Cyclone II devices, allowing the scheduler to process a burst request every 20 ns. To the authors’ best knowledge, this is the fastest implementation of burst scheduling algorithms.
Starting Page	317
Ending Page	326
Page Count	10
File Format	PDF
ISSN	1387974X
Journal	Photonic Network Communications
Volume Number	14
Issue Number	3
e-ISSN	15728188
Language	English
Publisher	Springer US
Publisher Date	2007-08-01
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Optical burst switching Wavelength scheduling Optical packet switching Wavelength routing Characterization and Evaluation of Materials Electronic and Computer Engineering Computer Communication Networks
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Computer Networks and Communications Electrical and Electronic Engineering Hardware and Architecture Software

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