Abstract
The novel concept of Physical Frame Time-slot Switching (PFTS) over DWDM, proposed by Sichuan Network and Communication technology key laboratory (SC-Netcom Lab), has been around for some time. It differs from existing switching techniques over DWDM by its superior QoS mechanisms embedded in and its capability to simplify Internet into a Single physical-layer User-data transfer Platform Architecture (SUPA).
This paper proposed a Borrow & Return Weighted Round Robin (BR-WRR) algorithm of output scheduling and dispatching in a multiple-priority queue environment in PFTS nodes. In such nodes, there are multi-ports in a DWDMbased PFTS node and each port contains multi-lambdas. Furthermore, multiple queues with different priorities plus burst queue with the highest priority are devised for each output lambda. A Borrow-and-Return mechanism is introduced to improve the orthodox WRR in PFTS, which cannot satisfy continuous transmitting privileged data of a burst to maintain its integrity. Comparison of the results between simulation of BR-WRR and that of WRR is provided in this paper and shows that BR-WRR has better performance with regard to fairness and important QoS parameters such as transit delay, jitters, and nondisordering.
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References
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© 2004 Springer-Verlag Berlin Heidelberg
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Xu, D., Zeng, H., Xu, C. (2004). BR-WRR Scheduling Algorithm in PFTS. In: Cao, J., Yang, L.T., Guo, M., Lau, F. (eds) Parallel and Distributed Processing and Applications. ISPA 2004. Lecture Notes in Computer Science, vol 3358. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-30566-8_106
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DOI: https://doi.org/10.1007/978-3-540-30566-8_106
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-24128-7
Online ISBN: 978-3-540-30566-8
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