TTDD: A Two-level Data Dissemination Model for Large-scale Wireless Sensor Networks

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9/26/2002. TTDD @ MOBICOM\'02. Plot. Information dispersal to portable sinksTwo-level question and information forwardingPerformance evaluationRelated workConclusion. 9/26/2002. TTDD @ MOBICOM\'02. Sensor Network Model. . Source. Jolt. 9/26/2002. TTDD @ MOBICOM\'02. Versatile Sink. . Over the top PowerConsumption.

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´╗┐TTDD: A Two-level Data Dissemination Model for Large-scale Wireless Sensor Networks Haiyun Luo Fan Ye, Jerry Cheng Songwu Lu, Lixia Zhang UCLA CS Dept.

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Outline Data spread to portable sinks Two-level question and information sending Performance assessment Related work Conclusion TTDD @ MOBICOM'02

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Sink Sensor Network Model Stimulus Source TTDD @ MOBICOM'02

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Mobile Sink Excessive Power Consumption Increased Wireless Transmission Collisions State Maintenance Overhead TTDD @ MOBICOM'02

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Challenges Battery controlled sensor hubs Communication through remote connections Bandwidth limitation Load adjusting Ad-hoc organization in expansive scale Fully circulated w/o worldwide learning Large quantities of sources and sinks Unexpected sensor hub disappointments Sink portability No from the earlier learning of sink development TTDD @ MOBICOM'02

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Goal, Idea Efficient and adaptable information dispersal from various sources to different, versatile sinks Two-level sending model Source proactively fabricates a matrix structure Localize effect of sink portability on information sending A little arrangement of sensor hub keeps up sending state TTDD @ MOBICOM'02

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Source Sink TTDD Basics Dissemination Node Data Announcement Data Query Immediate Dissemination Node TTDD @ MOBICOM'02

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Source Sink Trajectory Forwarding TTDD Mobile Sinks Dissemination Node Trajectory Forwarding Data Announcement Immediate Dissemination Node Data Immediate Dissemination Node TTDD @ MOBICOM'02

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Source TTDD Multiple Mobile Sinks Dissemination Node Trajectory Forwarding Data Announcement Immediate Dissemination Node Data TTDD @ MOBICOM'02

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Grid Maintenance Issues: Handle startling scattering hub disappointments Efficiency Solutions: Source sets the Grid Lifetime in Data Announcement DN replication : each DN initiates a few sensor hubs from its one-bounce neighbor, recreates the area of the upstream DN disappointment recognized and supplanted on-request by on-going inquiry and information streams TTDD @ MOBICOM'02

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Source Grid Maintenance Dissemination Node X Immediate Dissemination Node Data TTDD @ MOBICOM'02

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Source Grid Maintenance (cont'd) Dissemination Node X Immediate Dissemination Node Data TTDD @ MOBICOM'02

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Performance Evaluation Compare with sink-situated information scattering approaches Communication overhead State upkeep many-sided quality TTDD @ MOBICOM'02

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Ns-2 Simulation Metrics Energy utilization , delay , achievement rate Impacts of Cell size Number of sources and sinks Sink versatility Node disappointment rates TTDD @ MOBICOM'02

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Related Work SPIN (Mobicom 1999) Data spread to all sensor hubs Directed Diffusion, DRP, GRAB (2000) Flat dispersal structure, stationary sinks GAF (Mobicom 2001) Turn off repetitive hubs in MANET Pre-characterized lattice, cell measure dictated by radio Ad hoc organize grouping Node versatility causes high foundation upkeep overhead TTDD @ MOBICOM'02

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Conclusion TTDD: two-level information dispersal Model Exploit sensor hubs being stationary and area mindful Construct & keep up a framework structure with low overhead Proactive sources Localize sink portability affect Infrastructure-approach in stationary sensor systems Efficiency & adequacy in supporting versatile sinks TTDD @ MOBICOM'02

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