Item type |
学位論文 / Thesis or Dissertation(1) |
公開日 |
2010-02-22 |
タイトル |
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タイトル |
QoS Control and Performance Improvement Methods for Optical Burst Switching Networks |
タイトル |
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タイトル |
QoS Control and Performance Improvement Methods for Optical Burst Switching Networks |
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言語 |
en |
言語 |
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言語 |
eng |
資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_46ec |
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資源タイプ |
thesis |
著者名 |
杜, 平
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フリガナ |
ドゥ, ピング
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著者 |
DU, Ping
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学位授与機関 |
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学位授与機関名 |
総合研究大学院大学 |
学位名 |
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学位名 |
博士(情報学) |
学位記番号 |
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内容記述タイプ |
Other |
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内容記述 |
総研大甲第1049号 |
研究科 |
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値 |
複合科学研究科 |
専攻 |
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値 |
17 情報学専攻 |
学位授与年月日 |
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学位授与年月日 |
2007-03-23 |
学位授与年度 |
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値 |
2006 |
要旨 |
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内容記述タイプ |
Other |
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内容記述 |
Optical Burst Switching (OBS) has been proposed as a promising switching <br />technology for the next generation of optical transport network. In this dissertation, <br />we address the issue how to provide QoS control and improve performance in OBS <br />networks . <br /> In order to provide proportional differentiated services without or with absolute <br />constraints in bufferless OBS networks, a Dynamic Wavelength Selection (DWS) <br />scheme is introduced to assign more and longer periods of wavelengths to higher <br />priority classes dynamically and efficiently due to wavelength-sharing. The inte- <br />gration of DWS scheme and another proposed Delayed Burst Assignment (DBA) <br />scheme improves the burst loss performance by giving the burst head packet (BHP) <br />two opportunities of scheduling its data burst (DB). <br /> Furthermore, we propose two novel burst assembly algorithms with traMc shap- <br />ing functions to reduce the variance of assembled traffc and improve the burst <br />loss performance, which are named advanced timer-based and sliding window-based <br />assembly algorithms. <br /> Finally, an edge buffering based OBS layer fast error recovery scheme is pro-- <br />posed to improve the TCP performance over OBS networks, in which lost bursts are <br />retransmitted at edge nodes without being reassembled. <br /> In general, all the proposed schemes solve many of the fundamental issues faced <br />by optical burst switching networks, thereby making OBS more practical and efii- <br />cient in the near future.<br /> |
所蔵 |
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値 |
有 |
フォーマット |
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内容記述タイプ |
Other |
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内容記述 |
application/pdf |