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HUHG:High Utilization and Hybrid Granting algorithm for EPON

指導教授 : 黃鈴玲 學生 : 李孟璋 報告日期： 2006.11.22. HUHG:High Utilization and Hybrid Granting algorithm for EPON. 作者 & 出處. 作者： Jun-Seog Kim; Hun-je Yeon 出處： Telecommunications, 2006. AICT-ICIW '06. International Conference on Internet and Web Applications and Services/Advanced International Conference.

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HUHG:High Utilization and Hybrid Granting algorithm for EPON

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  1. 指導教授:黃鈴玲 學生:李孟璋 報告日期：2006.11.22 HUHG:High Utilization and Hybrid Granting algorithm for EPON

  2. 作者&出處 • 作者：Jun-Seog Kim; Hun-je Yeon • 出處：Telecommunications, 2006. AICT-ICIW '06. International Conference on Internet and Web Applications and Services/Advanced International Conference

  3. Outline • EPON System Model • Introduction • Previous Bandwidth Allocation Schemes • The New Dynamic Bandwidth Allocation Scheme：HUHG • Bandwidth allocation scheme of OLT • Inner-scheduling of ONU • Theoretical maximum throughput • Simulation Results • Conclusion

  4. EPON System Model • OLT、 ODN、ONU • Downlink-broadcast • Uplink- time-division

  5. Introduction • EPON：the next generation broadband access network • QoS of different services • Improve uplink bandwidth utilization • Eliminating the idle time • New dynamic allocation scheme

  6. Previous Bandwidth Allocation Scheme • IPACT：does not support Qos

  7. The New Dynamic Bandwidth Allocation Scheme：HUHG • Traffic is divided into three class：EF、AF、BE • EF：Highest priority • AF：Middle priority • BE：Lowest priority • EF class doesn’t need Report message to be granted in EF sub-cycle

  8. Bandwidth allocation scheme of OLT

  9. Inner-scheduling of ONU 1. 2. 3. 4. 5.

  10. Inner-scheduling of ONU 6.7.

  11. Theoretical maximun throughput

  12. Simulation Results 1.Simulation time：100sec2.Packet size：40522~1500bytes3.Traffic model：exponential4.ONUs equally weighted5.60% for AF class 6.40% for BE class

  13. Conclusion • The HUHG algorithm improves network throughput removing or diminishing idle time of EPON scheduling.

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