Handoff Prioritization and Decision Schemes in Wireless Cellular Networks: a Survey
陳恂達 Hsun-Da Chen
Institute of Communications EngineeringNational Chung Cheng University
Author:
Aggeliki Sgora
Dimitrios D. Vergados
IEEE COMMUNICATIONS & TUTORIALS, VOL. 11, NO. 4, FOURTH QUARTER 2009
Outline
Introduction Handoff Process Horizontal Handoff Process Vertical Handoff Process Conclusion References
Introduction
Cellular Networks Handoff Horizontal Handoff Vertical Handoff
Introduction
Handoff Process
Types of Handoff Performance Metrics of Handoff Schemes
Handoff Process
Types of Handoff
Handoff Process
Types of Handoff
Handoff Process
Performance Metrics of Handoff SchemesNew (or originating) call blocking probabilityHandoff call blockingHandoff probabilityCall droppingDelayChannel utilization efficiency
Horizontal Handoff Process
Handoff PhasesMeasurementInitiationDecision
Mobile-Controlled Handoff (MCHO) Network-Controlled Handoff (NCHO) Mobile-Assisted Handoff (MAHO)
Execution
Horizontal Handoff Process
Handoff Schemes
Horizontal Handoff Process
Handoff Schemes
Horizontal Handoff Process
Handoff SchemesNon-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)
Horizontal Handoff Process
Vertical Handoff Process
Handoff PhasesSystem discoveryHandoff decisionHandoff execution
Vertical Handoff Process
Handoff Schemes
Vertical Handoff Process
Vertical Handoff SolutionsNetwork Layer Vertical Handoff Solutions
WWAN-WLAN 3G-WLAN
Upper Layer Vertical Handoff Solutions Migration Monitor Module Handoff-aware TCP Core Module Resumption Module
Conclusion
Handoff schemes on homogeneous and heterogeneous networks.
Pros and cons of handoff schemes The most recent handoff prioritization
References
[1] Sgora, A.; Vergados, D.D.; Communications Surveys & Tutorials, IEEE Volume 11, Issue 4, Fourth Quarter 2009 Page(s):57 - 77
