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Handoff Prioritization and Decision Schemes in Wireless Cellular Networks: a Survey

Handoff Prioritization and Decision Schemes in Wireless Cellular Networks: a Survey. 陳恂達 Hsun-Da Chen Institute of Communications Engineering National Chung Cheng University. Author: Aggeliki Sgora Dimitrios D. Vergados. IEEE COMMUNICATIONS & TUTORIALS, VOL. 11, NO. 4, FOURTH QUARTER 2009.

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Handoff Prioritization and Decision Schemes in Wireless Cellular Networks: a Survey

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  1. Handoff Prioritization and Decision Schemes in Wireless Cellular Networks: a Survey 陳恂達 Hsun-Da Chen Institute of Communications Engineering National Chung Cheng University Author: Aggeliki Sgora Dimitrios D. Vergados IEEE COMMUNICATIONS & TUTORIALS, VOL. 11, NO. 4, FOURTH QUARTER 2009

  2. Outline • Introduction • Handoff Process • Horizontal Handoff Process • Vertical Handoff Process • Conclusion • References

  3. Introduction • Cellular Networks • Handoff • Horizontal Handoff • Vertical Handoff

  4. Introduction

  5. HandoffProcess • Types of Handoff • Performance Metrics of Handoff Schemes

  6. HandoffProcess • Types of Handoff

  7. HandoffProcess • Types of Handoff

  8. HandoffProcess • Performance Metrics of Handoff Schemes • New (or originating) call blocking probability • Handoff call blocking • Handoff probability • Call dropping • Delay • Channel utilization efficiency

  9. Horizontal Handoff Process • Handoff Phases • Measurement • Initiation • Decision • Mobile-Controlled Handoff (MCHO) • Network-Controlled Handoff (NCHO) • Mobile-Assisted Handoff (MAHO) • Execution

  10. Horizontal Handoff Process • Handoff Schemes

  11. Horizontal Handoff Process • Handoff Schemes

  12. Horizontal Handoff Process • Handoff Schemes • Non-Prioritized Scheme (NPS) • Prioritization Schemes • Channel Reservation Schemes (CRS) • Handoff Queuing Schemes (HQS) • Channel Transferred Handoff Schemes (CTS) • SubRating Schemes (SBRS) • Genetic Handoff Schemes (GHS) • Hybrid Handoff Schemes (HHS)

  13. Horizontal Handoff Process

  14. Vertical Handoff Process • Handoff Phases • System discovery • Handoff decision • Handoff execution

  15. Vertical Handoff Process • Handoff Schemes

  16. Vertical Handoff Process • Vertical Handoff Solutions • Network Layer Vertical Handoff Solutions • WWAN-WLAN • 3G-WLAN • Upper Layer Vertical Handoff Solutions • Migration Monitor Module • Handoff-aware TCP Core Module • Resumption Module

  17. Conclusion • Handoff schemes on homogeneous and heterogeneous networks. • Pros and cons of handoff schemes • The most recent handoff prioritization

  18. References • [1] Sgora, A.; Vergados, D.D.; Communications Surveys & Tutorials, IEEE Volume 11, Issue 4, Fourth Quarter 2009 Page(s):57 - 77

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