光分組交換網(wǎng)絡(luò)的沖突解決：用光纖延遲線還是波長轉(zhuǎn)換器
Contention Resolution in Optical Packet Switched Networks: Using Fiber Delay-Lines or Wavelength Converters
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摘要: 該文研究了光分組網(wǎng)絡(luò)的沖突處理問題，提出了兩種異于傳統(tǒng)設(shè)計方法的交換結(jié)構(gòu)．研究表明：對于非突發(fā)性業(yè)務(wù)，非簡并排列方式的光纖延遲線是成本聚低的解決手段；而對于突發(fā)業(yè)務(wù)，將波長轉(zhuǎn)換器和延遲線結(jié)合使用是兼顧分紐丟棄性能，系統(tǒng)體積和成本的較好策略．文中基于此給出了系統(tǒng)設(shè)計原則，該原則可確保系統(tǒng)節(jié)約大量的波長轉(zhuǎn)換器和延遲線。對改善系統(tǒng)的整體性能十分有利．
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關(guān)鍵詞:
- 光分組交換;光緩存;波長轉(zhuǎn)換器;共享;分組丟棄率
Abstract: This paper proposes two new switch architectures that are more flexible and cost effective than the methods introduced in the literatures. For a given packet loss probability requirement, the resiilts demonstrate that (1) for non-bursty traffic, non-degenerate form of Fiber Delay-Lines (FDLs) is the most cost effective solution; (2) for bursty traffic, a combined use of degenerate FDLs and Tunable Wavelength Converters (TWCs) is a cost effective and robust solution. With the increase of the average burst length, i.e., burstiness, the number of TWCs needs to be increased so as to maintain a reasonable packet loss probability. However, even for the traffic with high degree of burstiness, the architecture that employs a set of degenerate FDLs and TWCs shared among the input lines, is still a cost effective and robust solution. -
Haas Z. The staggering switch: An electronically controlled optical packet switch [J].IEEE J. of Lightwave Technology.1993, 11(5/6):925-936[2]Hunter D K, Chia M C, Andonovic I. Buffering in optical packet switches [J].IEEE J. of Lightwave Technology.1998, 16(12):2081-2094[3]Eramo V, Listanti M, Pacifici P. A comparison study on the number of wavelength converters needed in synchronous and asynchronous all-optical switching architectures [J].IEEE J. of Lightwave Technology.2003, 21(2):340-355[4]Yao Shun, Mukherjee B, Yoo S J Ben, Dixit S. A unified study of contention-resolution schemes in optical packet-switched networks [J].IEEE J. of Lightwave Technology.2003, 21(3):672-683[5]El-Bawab T S, Shin Jong-Dug. Optical packet switching in core networks: between vision and reality [J]. IEEE Communications Magazine, 2002, 40(9): 60-65.[6]Danielsen S L, et al.. Optical packet switched network layer without optical buffers [J].IEEE Photonics Technology Letters.1998, 10(6):896-898[7]Danielsen S L, et al.. Wavelength conversion in optical packet switching [J].IEEE J. of Lightwave Technology.1998, 16(12):2095-2108[8]Eramo V, Listanti M. Wavelength converter sharing in a WDM optical packet switch: dimensioning and performance 8s [J].Computer Networks.2000, 32(8):633-651[9]Zhang Zhizhong, Zeng Qingji. Wavelength converter and fiber delay-line sharing in WDM optical packet switches: Dimensioning and performance issues [C]. SPIE Opticomm 2003, TX, Oct., 2003,5285: 267-277. -
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