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1 以 PSC 為基礎之光學網路架構與群播機制 之研究 The study of PSC Based Optical Networks and Multicast Mechanisms Speaker :劉政德 Advisor :吳和庭 教授 Date : 2008 November 13 th
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2 Outline Background PSC-WDM PON Architecture and Multicast Algorithm PSC-WDM PON Simulation PSC-Star Network Architecture and Multicast Algorithms PSC-Star Network Simulation Conclusion and Feature works
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3 Background Passive Optical Network (PON)
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4 Background TDM PON (Four PON combined)
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5 Background AWG-WDM PON
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6 PSC-WDM PON Architecture and Multicast Algorithm
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7 PSC-WDM PON Simulation term definition Packet’s type : unicast , single PON , multi PON single PON Offered Load As Source : average packet’s number per slot Performance Evaluation : Multicast Failed Ratio of Low Priority
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8 PSC-WDM PON Simulation Environment 系統環境參數參數值 可使用波長範圍 4 AWG or PSC 輸出端連接的 PON 個數 4 每個 PON 的 ONU Group 裡 ONU 個數 16 時槽傳輸時間 0.0005s 優先權個數 2 高優先權封包封包到達時間 Exponential 分佈 (0.0075s 0.00075s) 低優先權封包封包到達時間 Exponential 分佈 (0.00375s 0.000375s) 封包目的端數 Int uniform 分佈 (3,12) (3,24) (3,32) (3,48) (3,64) Single_PON,Unicast,Multi_PON 封包產生比例 (50%,10%,40%) (0%,50%,50%) (0%,40%,60%) 高優先權封包 TTL 0.005s 低優先權封包 TTL 0.01s 總模擬時槽數 60000 time slot
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9 PSC-WDM PON Simulation AWG-WDM PON & TDM PON
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10 PSC-WDM PON Simulation AWG-WDM PON & TDM PON
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11 PSC-WDM PON Simulation AWG-WDM PON & TDM PON & PSC-WDM PON
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12 PSC-WDM PON Simulation
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13 PSC-Star Network Architecture
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14 PSC-Star Network Multicast Algorithms LookBack Queue Medium Access with Priority (LBQAP)LBQAP shortest TTL first MAC (STTLF)STTLF Partitioned-shortest TTL first MAC (PSTTLF)PSTTLF
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18 PSC-Star Network Simulation Environment 系統環境參數參數值 可使用波長範圍 4 , 8 , 12 ONT 個數 8 , 16 , 24 時槽傳輸時間 0.0005s 優先權個數 2 每一個 ONT 高優先權封包到達時間 Exponential 分佈 (0.06s 0.006s) 每一個 ONT 低優先權封包到達時間 Exponential 分佈 (0.03s 0.003s) 封包目的端數 Int uniform(2,5) , (2,8) Unicast, Multicast 封包產生比例 (70%,30%) (50%,50%) (30%,70%) 高優先權封包 TTL 0.005s 低優先權封包 TTL 0.01s 總模擬時槽數 60000 time slot
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19 PSC-Star Network Simulation packet’s destination fixed wavelength fixed
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20 PSC-Star Network Simulation packet’s destination fixed wavelength fixed channel limit
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21 PSC-Star Network Simulation packet’s destination fixed wavelength increase
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22 PSC-Star Network Simulation packet’s destination fixed wavelength increase
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23 PSC-Star Network Simulation packet’s destination increase wavelength fixed
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24 PSC-Star Network Simulation packet’s destination increase wavelength increase
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25 PSC-Star Network Simulation Receiver Utilization
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26 Conclusion Proposed PSC-WDM PON Architecture and Multicast Algorithm with priority. By using simulation result,compare the achieved performances with those from AWG-WDM PON, TDM PON (four PON combined) architectures. Propose three different multicast access protocols, called LBQAP Protocol 、 STTLF Protocol and PSTTLF Protocol, for be employment in an asynchronous slotted optical star network with priority.
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27 Feature works Many fixed receivers composed an receive array. A proper scheduling to transmit unfixed length packets. Extension PSC Star PON.
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28 Reference Kyeong Soo Kim, “On the evolution of PON-based FTTH solutions,” Information Sciences—Informatics and Computer Science: An International Journal, Volume 149, January 2003 Glen Kramer and Gerry Pesavento, “Ethernet Passive Optical Access Network (EPON): Building a Next-Generation Optical Access Network,” Communications Magazine, IEEE, Volume: 40, Issue: 2, Feb. 2002, Pages:66 – 73 IEEE Standards for Information technology: Standard for port based network access control. IEEE Draft 802.3ah, July.2004 Yu-Li Hsueh, Rogge, M.S., Wei-Tao Shaw, Kazovsky, L.G. and Yamamoto, S., “SUCCESS-DWA: a highly scalable and cost-effective optical access network,” Communications Magazine, IEEE, Volume 42, Issue 8, Aug. 2004 Page(s):S24 - S30
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29 Reference Leo Spiekman, David Piehler, “Semiconductor Optical Amplifiers for FTTx,” ICTON Mo.D2.4 IEEE 2007 P.P. Iannone, et al. “Hybrid CWDM Amplifier Shared by Multiple TDM PONs, ” in Proc. OFC 2007 Anaheim, CA, 2007, post-deadline papers. 黃舜雍, ” 多重星狀光學網路下群播協定之設計 ”, 台北科技大學電腦通訊與控制研究所, 2000. 洪博信,適用於光學互連網路中群播分割機制之設計,碩士論文,國立台北科技大學 電腦通訊與控制研究所,民國 91 年。 林澤賢,能支援群播服務之分波多工被動式光纖網路的架構,碩士論文,台北科技大 學,資訊工程所,民國 94 年。
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30 Q&A
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