Handoff in Cellular Systems
Defining Handoffs What? What? Why? Why? When? When?
Major Topics Deployment scenarios and handoff Deployment scenarios and handoff Resource management in cellular system Resource management in cellular system Implementation of handoff Implementation of handoff Analysis of handoff algorithms Analysis of handoff algorithms
Deployment scenarios and handoff Macrocells Macrocells
Deployment scenarios and handoff Microcells Microcells a) Half-square cell plan a) Half-square cell plan b) Full- square cell plan b) Full- square cell plan c) Rectangular cell plan c) Rectangular cell plan
Deployment scenarios and handoff Macrocell/Microcell overlays Macrocell/Microcell overlays
Deployment scenarios and handoff Special Architectures Special Architectures a) underlay/overlay system a) underlay/overlay system b) Multiple channel bandwidth system b) Multiple channel bandwidth system
Deployment scenarios and handoff Integrated Wireless Systems Integrated Wireless Systems a) Integrated Terrestrial Systems a) Integrated Terrestrial Systems b) Integrated Terrestrial and Satellite Systems b) Integrated Terrestrial and Satellite Systems c) Handoff from Land Mobile Satellite System to the Terrestrial System c) Handoff from Land Mobile Satellite System to the Terrestrial System d) Handoff from the Terrestrial system to the Land Mobile Satellite System d) Handoff from the Terrestrial system to the Land Mobile Satellite System
Handoff Prioritization Guard channels Guard channels Queuing of Handoffs Queuing of Handoffs
Resource management in cellular system Admission control Admission control Channel allocation Channel allocation a) Fixed Channel Assignment a) Fixed Channel Assignment b) Dynamic Channel Assignment b) Dynamic Channel Assignment c) Flexible Channel Assignment c) Flexible Channel Assignment
Resource management in cellular system Power control Power control Handoff Handoff
Implementation of handoff Resource Management Integrated Handoff Algorithm Combined Intracell Handoff and Channel assignment Combined Intracell Handoff and Channel assignment SIR based Integrated Handoff algorithm SIR based Integrated Handoff algorithm RSS based Integrated Handoff algorithm RSS based Integrated Handoff algorithm Integrated power control and Handoff algorithm Integrated power control and Handoff algorithm
Implementation of handoff Network Controlled Handoff Protocol Network Controlled Handoff Protocol Mobile Assisted Handoff protocol Mobile Assisted Handoff protocol Soft Handoff Protocol Soft Handoff Protocol Mobile Controlled Handoff Protocol Mobile Controlled Handoff Protocol
Analysis of handoff algorithms The Analytical Approach The Analytical Approach The Simulation Approach The Simulation Approach a) Cell model a) Cell model b) Propagation model b) Propagation model c) Traffic model c) Traffic model d) Mobility model d) Mobility model The Emulation Approach The Emulation Approach
CONCLUSION FUTURE???
REFERENCES
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