(3.235.11.178) 您好!臺灣時間:2021/03/07 08:41
字體大小: 字級放大   字級縮小   預設字形  
回查詢結果

詳目顯示:::

我願授權國圖
: 
twitterline
研究生:周佳興
研究生(外文):Chia-Hsing Chou
論文名稱:具備共用波長轉換器之緩衝式波分多工光交換機的效能評估
論文名稱(外文):Performance Evaluations on a Buffering WDM Optical Packet Switch Equipped with Shared Wavelength Converters
指導教授:黃振發黃振發引用關係
指導教授(外文):Jen-Fa Huang
學位類別:碩士
校院名稱:國立成功大學
系所名稱:電機工程學系碩博士班
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2002
畢業學年度:90
語文別:英文
論文頁數:58
中文關鍵詞:波分多工光緩衝光數據封包交換機可調式波長轉換器
外文關鍵詞:Wavelength Division MultiplexingOptical BufferingOptical Packet SwitchTunable Wavelength Converters (TWCs)
相關次數:
  • 被引用被引用:0
  • 點閱點閱:94
  • 評分評分:系統版面圖檔系統版面圖檔系統版面圖檔系統版面圖檔系統版面圖檔
  • 下載下載:15
  • 收藏至我的研究室書目清單書目收藏:0
在這一篇論文中,我們評估一個使用波長維度 (Wavelength dimension) 來解決競爭問題的緩衝式波分多工 (Wavelength Division Multiplexing, WDM) 光數據封包交換機的架構。在這個架構的每個輸出端都裝有一個別的緩衝器和裝備可調式波長轉換器 (Tunable Wavelength Converters, TWCs) 來讓輸入端之間共同使用。結合波長維度的使用來解決競爭問題,這個方法縮小了每個輸出端緩衝器的尺寸和使用較少波長轉換器的數量;因此,它是有成本效益的。根據這個架構,一個較低的數據封包遺失機率 (Packet loss probability) 能夠達成。我們也可看到緩衝式光交換機比無緩衝式光交換機使用較少的波長轉換器數目。此外,我們將利用數值模擬來評估殘存函數 (survivor function)。

此外,我們分析輸出端競爭過程的平均競爭時間 (Mean contention time) 和輸出端緩衝器的平均數據封包延遲 (Mean packet delay)。我們的研究指出輸出端競爭過程能被塑造成一個BI/D/B/N的排隊過程和輸出端緩衝器能被塑造成一個G[x]/D/1/B的排隊過程。利用數值模擬來評估具備共用波長轉換器之緩衝式波分多工光交換機的平均合計延遲 (Mean total delay)。
In this thesis, a buffering WDM optical packet switch scheme employing the wavelength converters for contention resolution is evaluated. The architecture is dedicated to an individual buffer for each output and is equipped with tunable wavelength converters (TWCs) shared among the input lines. Combined with the wavelength dimension for contention resolution, this reduces the size of each output buffer and employs a lesser number of wavelength converters; therefore, it is cost-effective. Based on the architecture, lower packet loss probability can be achieved. We also observe that buffering optical switch allows reductions on the employed number of converters compared with the bufferless architecture. Besides, we will evaluate survivor function by means of numerical simulations.

Furthermore, we analyze mean contention time in output contention process and mean packet delay in output buffer. Our studies indicate that the output contention process can be modeled by a BI/D/B/N queueing process and the output buffer can be modeled by a G[x]/D/1/B queueing process. Mean total delay in buffering packet switch equipped with shared TWCs is evaluated by means of numerical simulations.
Chapter 1. Introduction ……………………………………………………………1
1.1. SCM Header and Packet Format……………………………………………2
1.2. Contention solution…………………………5
1.2.1. Wavelength Dimension Technique………………5
1.2.2. Buffering Technique…………………………7
1.2.3. Deflection Routing Technique………………9
1.3. The Motivation of our Research………12
Chapter 2. Previous Architectures of WDM Packet Switch………14
2.1. Wavelength Conversion Technique………………14
2.2. Bufferless WDM Switch with Shared TWCs……17
2.3. Partially Shared Buffering for WDM Packet Switch………………………19
2.4. Comparisons of Bufferless and Shared Buffer Schemes……………………22
Chapter 3. Shared TWCs for Buffering WDM Packet Switch…………25
3.1. WDM Optical Packet Switch…………………25
3.2. Dimensioning the Number of TWCs…………28
3.3. Evaluation of packet loss probability…36
3.3.1. Evaluation of Ploss in Full-Conversion Configuration (r = NM)………36
3.3.2. Evaluation of Ploss in No-Conversion Configuration (r = 0)………………37
3.3.3. Evaluation of Ploss when r TWCs are utilized (0 < r < NM)………………39
3.4. Numerical Results of Packet Loss Probability……………………………………41
Chapter 4. Evaluation of mean total delay and survivor function ………45
4.1. Numerical Results of Mean Total Delay…………………………………45
4.1.1. Output Contention Process (BI/D/B/N queue)……………………46
4.1.2. Output Buffer Process (G[x]/D/1/B queue)………………………………47
4.2. Numerical Results of Survivor Function……52
Chapter 5. Concluding Remarks…………………55
[1]. Gerd Keiser, “Optical Fiber Communications,” New York: McGraw-Hill, 2000.

[2]. Shun Yao, B. Mukherjee, and S. Dixit, “Advances in photonic packet switching: an overview,” IEEE Communications Magazine, vol. 38, no. 2, pp. 84–94, Feb. 2000.

[3]. Eramo, V. and M. Listanti, “Packet loss in a bufferless optical WDM switch employing shared tunable wavelength converters,” Journal of Lightwave Technology, vol. 18, no. 12, pp. 1818–1833, Dec. 2000.

[4]. Juan Diao and P.L. Chu, “Analysis of partially shared buffering for WDM optical packet switching,” Journal of Lightwave Technology, vol. 17, no. 12, pp. 2461–2469, Dec. 1999.

[5]. Ribeiro, M.R.N. and M.J. O’Mahony, “Improvements on performance of photonic packet switching nodes by priority assignment and buffer sharing,” 2000 IEEE International Conference on Communications, vol. 3, pp. 1738–1742, 2000.

[6]. Hunter, D.K., M.H.M. Nizam, M.C. Chia, I. Andonovic, K.M. Guild, A. Tzanakaki, M.J. O'Mahony, L.D. Bainbridge, M.F.C. Stephens, R.V. Penty, and I.H. White, “WASPNET: a wavelength switched packet network,” IEEE Communications Magazine, vol. 37, no. 3, pp. 120–129, March 1999.

[7]. Kuo-Chun Lee and V.O.K. Li, “Optimization of a WDM optical packet switch with wavelength converters,” INFOCOM '95, the 14-th Annual Joint Conference of the IEEE Computer and Communications Societies, Proceedings IEEE, vol. 2, pp. 423–430, 1995.

[8]. Danielsen, S.L., C. Joergensen, B. Mikkelsen, and K.E. Stubkjaer, “Optical packet switched network layer without optical buffers,” IEEE Photonics Technology Letters, vol. 10, no. 6, pp. 896–898, June 1998.

[9]. Danielsen, S.L., B. Mikkelsen, C. Joergensen, T. Durhuus, and K.E. Stubkjaer, “WDM packet switch architectures and analysis of the influence of tunable wavelength converters on the performance,” Journal of Lightwave Technology, vol. 15, no. 2, pp. 219–227, Feb. 1997.

[10]. Rajiv Ramaswami and Kumar N. Sivarajan, “Optical Networks,” San Francisco: Morgan Kaufmann, 1998.

[11]. Li, S.-Q., “Nonuniform traffic analysis on a nonblocking space-division packet switch,” IEEE Transactions on Communications, vol. 38, no. 7, pp. 1085 -1096, July 1990.

[12]. Lee, M.J. and D.S. Ahn, “Packet loss analysis of nonblocking ATM switches with nonuniform traffic and performance improvement by output buffer sharing,” Technical Program Conference Record, GLOBECOM '93, IEEE in Houston, vol. 2, pp. 1079 -1084, 1993.

[13]. Guogen Zhang, W.G. Bulgren, and V.L. Wallace, “A performance model of space- division ATM switches with input and output queueing,” Proceedings of the 29-th Hawaii International Conference on System Sciences, vol. 1, pp. 72 -79, 1996.

[14]. R.A. Howard, “Dynamic Probabilistic Systems, Volume I: Markov Models,” New York: Wiley, 1971.
連結至畢業學校之論文網頁點我開啟連結
註: 此連結為研究生畢業學校所提供,不一定有電子全文可供下載,若連結有誤,請點選上方之〝勘誤回報〞功能,我們會盡快修正,謝謝!
QRCODE
 
 
 
 
 
                                                                                                                                                                                                                                                                                                                                                                                                               
第一頁 上一頁 下一頁 最後一頁 top
系統版面圖檔 系統版面圖檔