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An Enhancement of Mobile IP by Home Agent Handover

An Enhancement of Mobile IP by Home Agent Handover . Advisor : Chun-Chuan Yang Speaker : Li-Sheng Yu June 23, 2005.

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An Enhancement of Mobile IP by Home Agent Handover

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  1. An Enhancement of Mobile IP by Home Agent Handover Advisor : Chun-Chuan Yang Speaker : Li-Sheng Yu June 23, 2005 Reference: “An Enhancement of Mobile IP by Home Agent Handover,” Proceedings, IEEE 62nd Semiannual Vehicular Technology Conference (VTC-2005Fall), 25-28 Sept. 2005. http://www.csie.ncnu.edu.tw/~ccyang/Publication/VTC2005Fall-3.pdf

  2. Outline • Introduction • Home Agent Handover in Mobile IP (HH-MIP) • HH-MIP Multicast Extension (HH-MIP/ME) • Conclusion

  3. Conventional datagram Tunneled datagram Mobile IP Data Delivery Correspondent Node (CN) 1 Internet Foreign Agent (FA) Home Network (HN) Foreign Network (FN) 2 3 Tunneling Home Agent (HA) Mobile Host (MH) Disadvantage : 1. Triangular Routing Problem 2. Long Handoff Delay

  4. Control packets nFA : new FA oFA : old FA Disadvantage : Large Signaling Overhead Route Optimization (ROMIP) Protocol Overview CN CN 3 Internet Internet HA 2 nFA FA oFA 1 HA FN MH

  5. HH-MIP Concept CN THA : Temporary Home Agent Internet FA HA THA FN HN MH Is there possible to make HA always close to MH ?

  6. Flow Diagram for Data Delivery in HH-MIP CN HA THA FA(MH) Control messages: MW = Binding Warning Message MR = Binding Request Message MU = Binding Update Message MA = Acknowledgement Message SESSION MW MR MU MA Conventional datagrams Tunneled datagrams

  7. THA Selection in HH-MIP Initially HA is the MH’s THA • If Distance (FA2, HA) < Distance (FA2, THA) then/*** MH is moving closer to its HA ***/ • HA is selected as the new THA • Else if Distance (FA2, THA) > Distance (FA1, THA) /*** MH is moving away from its previous THA ***/ • FA2 is selected as its new THA • Else • MH’s THA remains the same HA FA2 MH THA FA1

  8. Flow Diagram for THA Handover new-FA (MH) new-THA CN HA old-THA old-FA SESSION Control messages: MW = Binding Warning Message MR = Binding Request Message MU = Binding Update Message MA = Acknowledgement Message Movement & THA Handover MU MU MW MR MU MA Conventional datagrams Tunneled datagrams Tunneled lost datagrams

  9. Location registration Conventional datagram Tunneled datagram MH movement Dynamic Hierarchical Mobile IP (DHMIP) CN Internet HA FA1 FA2 FA3 MH MH MH IEEE Journal on Selected Area in Communications, Volume: 22, Issue: 4, May 2004

  10. Simulation Environment CN Simulation Period : 500 time slots Move Probability : 0.2~0.9 MH 8 x 8 Mesh Network

  11. Signaling Cost

  12. Handoff Latency

  13. End-to-End Path Length

  14. HH-MIP/Multicast Extension (HH-MIP/ME) • Related Work • Protocol Overview • Performance Evaluation

  15. MH1 Related Work Multicast Sender Multicast Sender Tunneling Multicast Tree Link  Join message delivery HA1 HA2 FA1 FA2 MoM : an enhancement of Bi-directional Tunneling FA2 FA1  MH2 MH1 Remote Subscription Bi-directional Tunneling

  16. Tunneling Multicast Tree Link Data Duplication and Tunnel Convergence Problem Multicast Sender HA Internet HA1 HA2 HA3 FA FA MH1 MH2 MH3 MH1 MH2 MH3 Data Duplication Tunnel Convergence

  17. DMSP Handoff Multicast Sender Multicast Sender DMSP DMSP DMSP HA1 HA2 HA3 HA1 HA2 HA3 FA1 FA2 FA1 MH2 MH3 MH1 MH2 MH1 MH3

  18. HH-MIP/ME Data Delivery Multicast Sender Multicast Sender THA1 = MH1,MH2 THA2 = MH3 THA3 = MH4 THA1 THA2 THA3 THA1 THA2 THA3  FA1 FA2 FA3 FA1 FA2 FA3  MH1 MH2 MH3 MH4 MH1 MH2 MH3 MH4

  19. HH-MIP/ME During THA Handover Multicast Sender  Join message delivery Multicast Tree Link THA1 THA3 1 2  Tunneling FA1 THA2 FA3  MH1 MH3

  20. Performance Evaluation Multicast Sender Simulation Period : 500 time slot Group Size : 10~50 MHs MH Move Probability : 0.2~0.9 8 x 8 Mesh Network

  21. End-to-End Path Length

  22. Tree Maintenance Overhead

  23. Number of DMSP Handoff

  24. DMSP Handoff Latency

  25. Conclusion • HH-MIP uses THA to reduce : • Triangular routing • Handoff latency • Signaling cost • HH-MIP/ME : • HH-MIP based Multicast Extension • A hybrid of MoM and RS

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