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

Delve into the realm of handoff, prioritization, and decision schemes in wireless cellular networks. Explore horizontal and vertical handoff processes, performance metrics, and different handoff schemes. Understand the challenges and solutions for seamless handover in heterogeneous networks.

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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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