PSC The study of PSC Based Optical Networks

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 1

Outline p Background p PSC-WDM PON Architecture and Multicast Algorithm p PSC-WDM PON Simulation p PSC-Star Network Architecture and Multicast Algorithms p PSC-Star Network Simulation p Conclusion and Feature works 2

Background p Passive Optical Network (PON) 3

Background p TDM PON (Four PON combined) 4

Background p AWG-WDM PON 5

PSC-WDM PON Architecture and Multicast Algorithm 6

PSC-WDM PON Simulation term definition p Packet’s type：unicast，single PON，multi PON p Offered Load As Source： average packet’s number per slot p Performance Evaluation：Multicast Failed Ratio of Low Priority 7

PSC-WDM PON Simulation Environment 系統環境參數 參數� 可使用波長範圍 4 AWG or PSC輸出端連接的PON個 4 數 每個PON的ONU Group裡ONU個 數 16 時槽傳輸時間 0. 0005 s 優先權個數 2 高優先權封包封包到達時間 Exponential分佈 (0. 0075 s 0. 00075 s) 低優先權封包封包到達時間 Exponential分佈 (0. 00375 s 0. 000375 s) 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�生比例 (50%, 10%, 40%) (0%, 50%) (0%, 40%, 60%) 8

PSC-WDM PON Simulation AWG-WDM PON & TDM PON 9

PSC-WDM PON Simulation AWG-WDM PON & TDM PON 10

PSC-WDM PON Simulation AWG-WDM PON & TDM PON & PSC-WDM PON 11

PSC-WDM PON Simulation 12

PSC-Star Network Architecture 13

PSC-Star Network Multicast Algorithms p Look. Back Queue Medium Access with Priority (LBQAP) p shortest TTL first MAC (STTLF) p Partitioned-shortest TTL first MAC (PSTTLF) 14

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PSC-Star Network Simulation Environment 系統環境參數 參數� 可使用波長範圍 4，8，12 ONT 個數 8，16，24 時槽傳輸時間 0. 0005 s 優先權個數 2 每一個ONT高優先權封包到達時間 Exponential分佈 (0. 06 s 0. 006 s) 每一個ONT低優先權封包到達時間 Exponential分佈 (0. 03 s 0. 003 s) 封包目的端數 Int uniform(2, 5)，(2, 8) Unicast , Multicast封包�生比例 (70%, 30%) (50%, 50%) (30%, 70%) 高優先權封包TTL 0. 005 s 低優先權封包TTL 0. 01 s 總模擬時槽數 60000 time slot 18

PSC-Star Network Simulation packet’s destination fixed wavelength fixed 19

PSC-Star Network Simulation packet’s destination fixed wavelength fixed p channel limit 20

PSC-Star Network Simulation packet’s destination fixed wavelength increase 21

PSC-Star Network Simulation packet’s destination fixed wavelength increase 22

PSC-Star Network Simulation packet’s destination increase wavelength fixed 23

PSC-Star Network Simulation packet’s destination increase wavelength increase 24

PSC-Star Network Simulation Receiver Utilization 25

Conclusion p 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. p 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. 26

Feature works p Many fixed receivers composed an receive array. p A proper scheduling to transmit unfixed length packets. p Extension PSC Star PON. 27

Reference p Kyeong Soo Kim, “On the evolution of PON-based FTTH solutions, ” Information Sciences —Informatics and Computer Science: An International Journal, Volume 149 , January 2003 p 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 p IEEE Standards for Information technology: Standard for port based network access control. IEEE Draft 802. 3 ah, July. 2004 p 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): S 24 - S 30 28

Q&A 30