Data Collection by a Mobile Observer in a Single-hop Sensor Network

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dc.citation.bibtexNamearticleen_US
dc.citation.journalTitleACM Transactions on Sensor Networksen_US
dc.contributor.authorChakrabarti, Arnaben_US
dc.contributor.authorSabharwal, Ashutoshen_US
dc.contributor.authorAazhang, Behnaamen_US
dc.contributor.orgCenter for Multimedia Communications (http://cmc.rice.edu/)en_US
dc.date.accessioned2007-10-31T00:39:09Zen_US
dc.date.available2007-10-31T00:39:09Zen_US
dc.date.issued2005-01-15en_US
dc.date.modified2005-01-05en_US
dc.date.submitted2005-01-05en_US
dc.descriptionJournal Paperen_US
dc.description.abstractIn this paper, we demonstrate significant reduction in communication power by using a mobile observer to collect data from a wireless single-hop network of static sensors. The key challenge in using a mobile observer is that it remains within range of any sensor for a limited period, and inability to transfer data in this period causes data loss. This prompts us to choose the fraction of nodes successful in communicating data as our performance constraint as we try to minimize network power. First, we establish that the process of data collection by a mobile observer is analogous to a queue. The queuing-based data collection model is then used as a design tool to identify the combination of system parameters that satisfies the performance metric with minimum power. Second, we derive a sufficient condition on node placement for zero data loss in a mobile observer network. As our third contribution, we demonstrate that in a dense network, the data collection analysis is much simpler, which allows us to obtain closed expressions for the network power. Power comparisons with static observer networks show that power reduction by multiple orders of magnitude is typical. The scenarios chosen for power comparisons also provide guidelines on the choice of path, if such a choice is available. As an example, a disc shaped network is analyzed and among the set of concentric circular paths, the best path is identified.en_US
dc.identifier.citationA. Chakrabarti, A. Sabharwal and B. Aazhang, "Data Collection by a Mobile Observer in a Single-hop Sensor Network," <i>ACM Transactions on Sensor Networks,</i> 2005.en_US
dc.identifier.urihttps://hdl.handle.net/1911/19778en_US
dc.language.isoengen_US
dc.relation.projecthttp://ece.rice.edu/~arnychaken_US
dc.subjectsensor networken_US
dc.subjectsingle-hopen_US
dc.subjectmobilityen_US
dc.subjectcommunicationen_US
dc.subjectpoweren_US
dc.subjectqueuingen_US
dc.subject.keywordsensor networken_US
dc.subject.keywordsingle-hopen_US
dc.subject.keywordmobilityen_US
dc.subject.keywordcommunicationen_US
dc.subject.keywordpoweren_US
dc.subject.keywordqueuingen_US
dc.titleData Collection by a Mobile Observer in a Single-hop Sensor Networken_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
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