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dc.contributor.authorHuang, Chi-Fuen_US
dc.contributor.authorTseng, Yu-Cheeen_US
dc.contributor.authorWu, Hsiao-Luen_US
dc.date.accessioned2014-12-08T15:14:34Z-
dc.date.available2014-12-08T15:14:34Z-
dc.date.issued2007-03-01en_US
dc.identifier.issn1550-4859en_US
dc.identifier.urihttp://dx.doi.org/10.1145/1210669.1210674en_US
dc.identifier.urihttp://hdl.handle.net/11536/11072-
dc.description.abstractWireless sensor networks have attracted a lot of attention recently. Such environments may consist of many inexpensive nodes, each capable of collecting, storing, and processing environmental information, and communicating with neighboring nodes through wireless links. For a sensor network to operate successfully, sensors must maintain both sensing coverage and network connectivity. This issue has been studied in Wang et al. [2003] and Zhang and Hou [2004a], both of which reach a similar conclusion that coverage can imply connectivity as long as sensors' communication ranges are no less than twice their sensing ranges. In this article, without relying on this strong assumption, we investigate the issue from a different angle and develop several necessary and sufficient conditions for ensuring coverage and connectivity of a sensor network. Hence, the results significantly generalize the results in Wang et al. [2003] and Zhang and Hou [2004a]. This work is also a significant extension of our earlier work [Huang and Tseng 2003; Huang et al. 2004], which addresses how to determine the level of coverage of a given sensor network but does not consider the network connectivity issue. Our work is the first work allowing an arbitrary relationship between sensing ranges and communication distances of sensor nodes. We develop decentralized solutions for determining, or even adjusting, the levels of coverage and connectivity of a given network. Adjusting levels of coverage and connectivity is necessary when sensors are overly deployed, and we approach this problem by putting sensors to sleep mode and tuning their transmission powers. This results in prolonged network lifetime.en_US
dc.language.isoen_USen_US
dc.subjectalgorithmsen_US
dc.subjectdesignen_US
dc.subjectperformanceen_US
dc.subjectad hoc networken_US
dc.subjectcoverageen_US
dc.subjectconnectivityen_US
dc.subjectenergy conservationen_US
dc.subjectpower controlen_US
dc.subjectsensor networken_US
dc.subjectwireless networken_US
dc.titleDistributed protocols for ensuring both coverage and connectivity of a wireless sensor networken_US
dc.typeArticleen_US
dc.identifier.doi10.1145/1210669.1210674en_US
dc.identifier.journalACM TRANSACTIONS ON SENSOR NETWORKSen_US
dc.citation.volume3en_US
dc.citation.issue1en_US
dc.citation.epageen_US
dc.contributor.department資訊工程學系zh_TW
dc.contributor.departmentDepartment of Computer Scienceen_US
dc.identifier.wosnumberWOS:000258243500005-
dc.citation.woscount12-
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