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Smooth Network Handover with SCTP Failover in Mobile IPv6

This paper explores the integration of Mobile IPv6 and SCTP to ensure seamless network handover for mobile devices, without needing to modify existing protocols. It emphasizes the use of SCTP failover mechanism for efficient handover.

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Smooth Network Handover with SCTP Failover in Mobile IPv6

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  1. The Use of SCTP Failover Mechanism for Efficient Network Handover on Mobile IPv6 IEEE 2006 3rd International Symposium on Wireless Communication Systems Speaker: Hsiao-Ting Wang Advisor: Quincy Wu Date: 2008.8.21

  2. Outline • Introduction • Architecture • Evaluation • Conclusion

  3. Introduction(1) • What is Mobility? • You can get seamless network access with your mobile devices • How to get seamless network?Technology solution: Multihoming • Multihoming means a host may have more than one NIC (Network Interface Card) that can access to the different networks

  4. Introducton(2) • Can the existing protocols work great to get smooth handover between different networks? • Which layer in TCP/IP architecture is suitable to be responsible for this task? • This paper gives us some discussions and ideas • Quiz: Handover vs. Roaming

  5. Protocol Issue • Mobile IPv6 • Mobile IPv6 allows a mobile node to be addressed by a home address all the time even though the mobile node changes its point of attachment to the Internet • When the mobile node is attached to a new network, the mobile node sends a binding update to its home agent (called home registration), a router on the mobile node's home link • To be brief, IPv6 uses bind update operation to notify the home agent and correspondent nodes which address the real address is mapping to

  6. Q: What disadvantages does IPv6 have? Ans: You will get a gap that the correspondent node cannot send packets to you. The gap we call it handover latency. As the left figure indicates. Handover Latency Note: MH: Mobile Host HA: Home Agent CN: Correspondent Node HoT: HoTI: Authentication packets CoTI:

  7. The handover latency impacts severely • the real-time applications • TCP connection (Why? You may think of the last week topic: TCP congestion issue)

  8. SCTP (Stream Control Transmission Protocol) • In the design aspect, it supports multi-homing (RFC 4096) • RFC 5061 proposes a extension of SCTP to support multihoming, known as ASCONF packet

  9. ASCONF packet format

  10. SCTP Multihoming • Address Management at Association Setup • Path and Peer Monitoring • Path Selection TCP vs. SCTP

  11. Evaluation • Implementation System Overview

  12. Experiment Networks

  13. Experiment Result:

  14. Conclusion • This paper let Mobile IPv6 and SCTP cooperate to achieve smooth handover • Need not modifying protocols that features in this proposed system

  15. Reference • The Use of SCTP Failover Mechanism for Efficient Network Handover on Mobile IPv6 • RFC 5061: Stream Control Transmission Protocol (SCTP) Dynamic Address Reconfiguration

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