Embed Size (px)
Citation preview
Handoff in Handoff in Cellular SystemsCellular Systems
Defining HandoffsDefining Handoffs
What?What? Why?Why? When?When?
Major TopicsMajor Topics
Deployment scenarios and handoffDeployment scenarios and handoff Resource management in cellular Resource management in cellular
systemsystem Implementation of handoffImplementation of handoff Analysis of handoff algorithmsAnalysis of handoff algorithms
Deployment scenarios and Deployment scenarios and handoffhandoff
MacrocellsMacrocells
Deployment scenarios and Deployment scenarios and handoffhandoff
MicrocellsMicrocells
a) Half-square cell plana) Half-square cell plan
b) Full- square cell plan b) Full- square cell plan
c) Rectangular cell planc) Rectangular cell plan
Deployment scenarios and Deployment scenarios and handoffhandoff
Macrocell/Microcell overlaysMacrocell/Microcell overlays
Deployment scenarios and Deployment scenarios and handoffhandoff
Special ArchitecturesSpecial Architectures
a) underlay/overlay systema) underlay/overlay system
b) Multiple channel bandwidth systemb) Multiple channel bandwidth system
Deployment scenarios and Deployment scenarios and handoffhandoff
Integrated Wireless SystemsIntegrated Wireless Systems
a) Integrated Terrestrial Systemsa) Integrated Terrestrial Systems
b) Integrated Terrestrial and Satellite b) Integrated Terrestrial and Satellite SystemsSystems
c) Handoff from Land Mobile Satellite c) Handoff from Land Mobile Satellite SystemSystem to the Terrestrial System to the Terrestrial System
d) Handoff from the Terrestrial system to the d) Handoff from the Terrestrial system to the LandLand Mobile Satellite System Mobile Satellite System
Handoff PrioritizationHandoff Prioritization
Guard channelsGuard channels Queuing of HandoffsQueuing of Handoffs
Resource management in Resource management in cellular systemcellular system
Admission controlAdmission control Channel allocationChannel allocation
a) Fixed Channel Assignmenta) Fixed Channel Assignment
b) Dynamic Channel Assignmentb) Dynamic Channel Assignment
c) Flexible Channel Assignmentc) Flexible Channel Assignment
Resource management in Resource management in cellular systemcellular system
Power controlPower control HandoffHandoff
Implementation of handoffImplementation of handoffResource Management Integrated Resource Management Integrated
Handoff AlgorithmHandoff Algorithm Combined Intracell Handoff and Combined Intracell Handoff and
Channel assignmentChannel assignment SIR based Integrated Handoff algorithmSIR based Integrated Handoff algorithm RSS based Integrated Handoff algorithmRSS based Integrated Handoff algorithm Integrated power control and Handoff Integrated power control and Handoff
algorithmalgorithm
Implementation of handoffImplementation of handoff
Network Controlled Handoff Network Controlled Handoff ProtocolProtocol
Mobile Assisted Handoff protocolMobile Assisted Handoff protocol Soft Handoff ProtocolSoft Handoff Protocol Mobile Controlled Handoff ProtocolMobile Controlled Handoff Protocol
Analysis of handoff Analysis of handoff algorithmsalgorithms
The Analytical ApproachThe Analytical Approach The Simulation ApproachThe Simulation Approach
a) Cell modela) Cell model
b) Propagation modelb) Propagation model
c) Traffic modelc) Traffic model
d) Mobility modeld) Mobility model The Emulation ApproachThe Emulation Approach
CONCLUSIONCONCLUSION
FUTURE???FUTURE???
REFERENCESREFERENCES
www.IEEE.comwww.IEEE.com http://portal.acm.org/portal.cfmhttp://portal.acm.org/portal.cfm www.awl.com/csengwww.awl.com/cseng
THANK YOU!!THANK YOU!!
