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Handoff in Cellular Systems

Handoff in Cellular Systems. Defining Handoffs. What? Why? When?. Major Topics. Deployment scenarios and handoff Resource management in cellular system Implementation of handoff Analysis of handoff algorithms. Deployment scenarios and handoff. Macrocells.

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Handoff in Cellular Systems

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  1. Handoff in Cellular Systems

  2. Defining Handoffs • What? • Why? • When?

  3. Major Topics • Deployment scenarios and handoff • Resource management in cellular system • Implementation of handoff • Analysis of handoff algorithms

  4. Deployment scenarios and handoff • Macrocells

  5. Deployment scenarios and handoff • Microcells a) Half-square cell plan b) Full- square cell plan c) Rectangular cell plan

  6. Deployment scenarios and handoff • Macrocell/Microcell overlays

  7. Deployment scenarios and handoff • Special Architectures a) underlay/overlay system b) Multiple channel bandwidth system

  8. Deployment scenarios and handoff • Integrated Wireless Systems a) Integrated Terrestrial Systems b) Integrated Terrestrial and Satellite Systems c) Handoff from Land Mobile Satellite System to the Terrestrial System d) Handoff from the Terrestrial system to the Land Mobile Satellite System

  9. Handoff Prioritization • Guard channels • Queuing of Handoffs

  10. Resource management in cellular system • Admission control • Channel allocation a) Fixed Channel Assignment b) Dynamic Channel Assignment c) Flexible Channel Assignment

  11. Resource management in cellular system • Power control • Handoff

  12. Implementation of handoff Resource Management Integrated Handoff Algorithm • Combined Intracell Handoff and Channel assignment • SIR based Integrated Handoff algorithm • RSS based Integrated Handoff algorithm • Integrated power control and Handoff algorithm

  13. Implementation of handoff • Network Controlled Handoff Protocol • Mobile Assisted Handoff protocol • Soft Handoff Protocol • Mobile Controlled Handoff Protocol

  14. Analysis of handoff algorithms • The Analytical Approach • The Simulation Approach a) Cell model b) Propagation model c) Traffic model d) Mobility model • The Emulation Approach

  15. CONCLUSION FUTURE???

  16. REFERENCES • www.IEEE.com • http://portal.acm.org/portal.cfm • www.awl.com/cseng

  17. THANK YOU!!

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