標題: On the design of optical buffer for optical input-queued switches with quality of service guarantees
作者: Lin, CY
Chen, C
資訊工程學系
Department of Computer Science
關鍵字: optical delay line;optical buffers;optical switch;quality of service;resource contention
公開日期: 2005
摘要: This paper presents a quality of service (QoS) enable optical delay line (ODL) architecture to solve the problem of resource contention and support multilevel priority queues in an optical packet switch. ODL has been used in optical packet switches to resolve resource contention; however, the packets travel continuously in ODL limits the management of random access of the packets and increases the packet loss probability. Moreover, multiple ODL sets usually are needed to realize multiple priority queues in order to support QoS. In this paper, a new Unicast Recirculatiion ODL (URODL) architecture is proposed to resolve the output contention problem in an input-queued optical packet switch. To improve relatively poor throughput due to the head of Line (HOL) blocking in the input-queued switch, we modify URODL to support a more efficient window-based lookahead scheduling algorithm. Furthermore, a control strategy is designed to turn a single set of URODL into multiple logical queues to hold different priority packets. The simulation results show our URODL model reduces packet loss effectively with the capability to support QoS. This URODL model can be easily implemented and managed in a fast optical packet switch.
URI: http://hdl.handle.net/11536/17612
http://dx.doi.org/10.1117/12.576790
ISBN: 0-8194-5579-2
ISSN: 0277-786X
DOI: 10.1117/12.576790
期刊: Optical Transmission, Switching, and Subsystem II, Pts 1 and 2
Volume: 5625
起始頁: 734
結束頁: 745
顯示於類別:會議論文


文件中的檔案:

  1. 000228325300091.pdf