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A new scheme to provide reliable transmission in optical burst switch networks

A new scheme to provide reliable transmission in optical burst switch networks. Yong-xiang Zhao, Chang-jia Chen, Yishuai Chen Beijing Jiaotong University. Optical burst switch (OBS). contention. few optical buffer. Example: Switch E. Input 1. Dropped by contention. Input 2. Output.

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A new scheme to provide reliable transmission in optical burst switch networks

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  1. A new scheme to provide reliable transmission in optical burst switch networks Yong-xiang Zhao, Chang-jia Chen, Yishuai Chen Beijing Jiaotong University

  2. Optical burst switch (OBS) contention few optical buffer

  3. Example: Switch E Input 1 Dropped by contention Input 2 Output time

  4. How to improve? • Coding? Add redundancy

  5. Random Coding + ACK • Block • N raw bursts: {1,2,3} • When idle, coding and send • Random coding [1]: {2⊕1,2⊕3} • ID List • ACK • Receiving node ACK to sending edge • reliable transmission • Next block

  6. Simulation • Dumbbell networks Utilization? 0.1 Change Number of nodes … … 1 0.1

  7. Performance

  8. 2 Level Network Fixed Number Change Number of nodes

  9. Reference • [1] T. Ho, M. M´edard, J. Shi, M. Effros, and D. Karger. On randomized network coding. In Allerton, 2003.

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