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Next-Generation Mobility Management Challenges in Hybrid Wireless Networks

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abbottc
17 diapositives · 203 Views · Jan 07, 2020

The article explores the trends and challenges in mobility management across hybrid wireless networks. It covers vertical handoff processes, recent management techniques, and future challenges like multimodality and seamless roaming. The discussion includes handoff design architectures, protocols, and outstanding challenges for effective mobility management.

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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.