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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

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
Outline and Challenges

  • Introduction

  • Vertical Handoff Process

  • Recent Vertical Handoff Management Techniques

  • Challenges for Mobility Management in Future

  • Conclusion


Introduction
Introduction and Challenges

  • 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


Introduction1
Introduction and Challenges


Introduction2
Introduction and Challenges


Vertical handoff process
Vertical Handoff Process and Challenges

  • 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)


Vertical handoff process1
Vertical Handoff Process and Challenges

  • Candidate Access Router Discovery (CARD)

    • RFC 4066

    • Application: Fast Mobile IP


Vertical handoff process2
Vertical Handoff Process and Challenges

  • Context Transfer Protocol (CTP)

    • IETF draft Feb. 2005

    • Proactive and reactive

Proactive

Reactive


Recent vertical handoff management techniques
Recent Vertical Handoff Management Techniques and Challenges

  • 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




Recent vertical handoff management techniques hopover
Recent Vertical Handoff Management Techniques ─ HOPOVER and Challenges

Pre-registration

Buffer data


Recent vertical handoff management techniques sctp based
Recent Vertical Handoff Management Techniques ─ SCTP-based and Challenges

  • Multi-homing

  • Transport layer mobility protocol

  • Support for smooth handoff




Challenges for mobility management in future
Challenges for Mobility Management in Future and Challenges

  • Multimodality

  • Efficient and seamless roaming

  • Quality of service

  • Billing and pricing

  • Inter-service provider compliance


Conclusion
Conclusion and Challenges

  • 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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