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Mobility Management Across Hybrid Wireless Networks: Trends and Challenges

Mobility Management Across Hybrid Wireless Networks: Trends and Challenges. Farhan Siddiqui, and Sherali Zeadally Computer Communications 2005  (article in press) Date: 2006/02/22 Reporter : Ming-Chin Chuang. Outline. Introduction Vertical Handoff Process

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Mobility Management Across Hybrid Wireless Networks: Trends and Challenges

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  1. Mobility Management Across Hybrid Wireless Networks: Trends and Challenges Farhan Siddiqui, and Sherali Zeadally Computer Communications 2005  (article in press) Date: 2006/02/22 Reporter : Ming-Chin Chuang

  2. Outline • Introduction • Vertical Handoff Process • Recent Vertical Handoff Management Techniques • Challenges for Mobility Management in Future • Conclusion

  3. Introduction • Mobile wireless technology has gained tremendous popularity due to its ability to provide ubiquitous information access to users on the move. • Some key features of next generation heterogeneous access networks include: • IP-based • Multimodal devices • High usability with anytime, anywhere connectivity • Support for multimediaservices with low transmission cost • Support for telecommunication, and data services

  4. Introduction

  5. Introduction

  6. Vertical Handoff Process • The vertical handoff process may be divided into three phases: • 1. Network Discovery • 2. Handoff Decision • Cost, Battery power, Application types, Network conditions, and Mobile node conditions • 3. Handoff Implementation • Candidate Access Router Discovery (CARD) • Context Transfer Protocol (CTP)

  7. Vertical Handoff Process • Candidate Access Router Discovery (CARD) • RFC 4066 • Application: Fast Mobile IP

  8. Vertical Handoff Process • Context Transfer Protocol (CTP) • IETF draft Feb. 2005 • Proactive and reactive Proactive Reactive

  9. Recent Vertical Handoff Management Techniques • Recent Vertical Handoff Management Techniques • Mobile IP (MIP) • Hierarchical Mobile IP (HMIP) • HandOff Protocol for OVERlay networks (HOPOVER) • SCTP-based Vertical Handoff • SIP-based Vertical Handoff

  10. Recent Vertical Handoff Management Techniques ─ MIP

  11. Recent Vertical Handoff Management Techniques ─ HMIP

  12. Recent Vertical Handoff Management Techniques ─ HOPOVER Pre-registration Buffer data

  13. Recent Vertical Handoff Management Techniques ─ SCTP-based • Multi-homing • Transport layer mobility protocol • Support for smooth handoff

  14. Recent Vertical Handoff Management Techniques ─ SCTP-based Internet

  15. Recent Vertical Handoff Management Techniques ─ SIP-based

  16. Challenges for Mobility Management in Future • Multimodality • Efficient and seamless roaming • Quality of service • Billing and pricing • Inter-service provider compliance

  17. Conclusion • Authors have presented a detailed discussion of various components of handoff management as well as recent handoff techniques for mobility across heterogeneous wireless access networks. • Authors also present and discuss limitations of recent handoff design architectures and protocols as well as outstanding challenges.

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