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      • HARVEST
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      Performance of data aggregation for wireless sensor networks

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      Date
      2010
      Author
      Feng, Jie
      Type
      Thesis
      Degree Level
      Doctoral
      Metadata
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      Abstract
      This thesis focuses on three fundamental issues that concern data aggregation protocols for periodic data collection in sensor networks: which sensor nodes should report their data, when should they report it, and should they use unicast or broadcast based protocols for this purpose. The issue of when nodes should report their data is considered in the context of real-time monitoring applications. The first part of this thesis shows that asynchronous aggregation, in which the time of each node’s transmission is determined adaptively based on its local history of past packet receptions from its children, outperforms synchronous aggregation by providing lower delay for a given end-to-end loss rate. Second, new broadcast-based aggregation protocols that minimize the number of packet transmissions, relying on multipath delivery rather than automatic repeat request for reliability, are designed and evaluated. The performance of broadcast-based aggregation is compared to that of unicast-based aggregation, in the context of both real-time and delay-tolerant data collection. Finally, this thesis investigates the potential benefits of dynamically, rather than semi-statically, determining the set of nodes reporting their data, in the context of applications in which coverage of some monitored region is to be maintained. Unicast and broadcast-based coverage-preserving data aggregation protocols are designed and evaluated. The performance of the proposed protocols is compared to that of data collection protocols relying on node scheduling.
      Degree
      Doctor of Philosophy (Ph.D.)
      Department
      Computer Science
      Program
      Computer Science
      Supervisor
      Makaroff, Dwight; Eager, Derek
      Committee
      Osgood, Nathaniel; Spiteri, Raymond J.; Cheston, Grant; Daku, Brian; Kunz, Thomas
      Copyright Date
      2010
      URI
      http://hdl.handle.net/10388/etd-06292010-135305
      Subject
      wireless sensor networks
      data aggregation
      performance evaluation
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      • Graduate Theses and Dissertations
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