Exploiting Edge Capability forp g g p yWireless Sensor NetworkingSHIWEN MAO, AUBURN UNIVERSITY,Y. THOMAS HOU, VIRGINIA POLYTECHNIC INSTITUTE AND STATE UNIVERSITYMIN-YOU WU, SHANGHAI JIAO TONG UNIVERSITY
BeamStar
Seminar Wireless Sensor Networks: Routing
Arnoud van der Heijde
March 11, 2009
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Index
• Routing in Wireless Sensor Networks• BeamStarBeamStar• Additional functions• Optimal Routing PathOptimal Routing Path• BeamStar Performance• Discussion• Discussion
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Routing in Wireless Sensor Networksg
• Hardware constrains (smart dust)
• Base station (sink)
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Routing in Wireless Sensor Networksg
• Data-centric routing• Directed DiffusionDirected Diffusion
• Location-based routing• GAF (Geographical Adaptive Fidelity)GAF (Geographical Adaptive Fidelity)
• Hierarchical routing• LEACH (Low-Energy Adaptive Clustering Hierarchy)• LEACH (Low-Energy Adaptive Clustering Hierarchy)
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BeamStar
• Sector creation• Beam oriantationBeam oriantation• Beam width• Beam transmision powerBeam transmision power
• Configuration• Forwarding rules• Forwarding rules
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BeamStar
• Beam – oriantation• Beam – widthBeam width• Beam – power
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BeamStar
• Simple:Simple:• Broadcast• Reception• Reception• Drop• Rebroadcast
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• Rebroadcast
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Characteristics
• Cluster operation• Directed broadcastDirected broadcast• Reduced complexity• Centralized routingCentralized routing
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Additional functions
• Query for events
• Hole detection and migration
• Granularity control of region size
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Optimal Routing Pathp g
• Bypass unreliable spots• Load balancingLoad balancing• Maximize lifetime
• Piggyback information inpacketspackets
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BeamStar VS Core-Based
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BeamStar VS Core-Based
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Discussion
• Network organization ?
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Discussion
Not a problem?
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Discussion
Not a problem
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Discussion
• Further remarks?
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My opiniony p
• Good• Reliable packet transmissionReliable packet transmission• Centralized routing• Simple node operationSimple node operation
• Bad• Sector creation• Sector creation• Directional antenna
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