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dc.contributor.advisor Johnson, David B.
dc.creatorXiao, Wei-Cheng
dc.date.accessioned 2013-07-24T19:51:02Z
dc.date.accessioned 2013-07-24T19:51:05Z
dc.date.available 2013-07-24T19:51:02Z
dc.date.available 2013-07-24T19:51:05Z
dc.date.created 2012-12
dc.date.issued 2013-07-24
dc.date.submitted December 2012
dc.identifier.urihttps://hdl.handle.net/1911/71703
dc.description.abstract Energy consumption and network latency are important issues in wireless sensor networks. The mechanism duty cycling is generally used in wireless sensor networks for avoiding energy consumption due to idle listening. Duty cycling, however, also introduces additional latency in communication among sensors. Some protocols have been proposed to work in wireless sensor networks with duty cycling, such as S-MAC and DW-MAC. Those protocols also tried to make efficient channel utilization and to mitigate the chance of packet collision and the network latency increase resulting from collision. DW-MAC was also designed to tolerate bursty and high traffic loads without increasing energy consumption, by spreading packet transmission and node wakeup times during a cycle. Some performance comparison between S-MAC and DW-MAC has been done in previous work; however, this comparison was performed in the ns-2 simulator only. In the real world, there are further issues not considered or discussed in the simulation, and some of those issues contribute significant influences to the MAC protocol performance. In this work, I implemented both S-MAC and DW-MAC physically on MICAz sensor motes and compared their performance through experiments. Through my implementation, experiments, and performance evaluation, hardware properties and issues that were not addressed in the previous work are presented, and their impacts on the performance are shown and discussed. I also simulated S-MAC and DW-MAC on ns-2 to give a mutual validation of the experimental results and my interpretation of the results. The experiences of physical implementations presented in this work can contribute new information and insights for helping in future MAC protocol design and implementation in wireless sensor networks.
dc.format.mimetype application/pdf
dc.language.iso eng
dc.subjectWireless sensor networks
Duty cycle
MAC
Synchronous
TinyOS
DW-MAC
dc.title Physical Implementation of Synchronous Duty-Cycling MAC Protocols: Experiences and Evaluation
dc.contributor.committeeMember Knightly, Edward W.
dc.contributor.committeeMember Ng, T. S. Eugene
dc.date.updated 2013-07-24T19:51:05Z
dc.identifier.slug 123456789/ETD-2012-12-240
dc.type.genre Thesis
dc.type.material Text
thesis.degree.department Computer Science
thesis.degree.discipline Engineering
thesis.degree.grantor Rice University
thesis.degree.level Masters
thesis.degree.name Master of Science
dc.identifier.citation Xiao, Wei-Cheng. "Physical Implementation of Synchronous Duty-Cycling MAC Protocols: Experiences and Evaluation." (2013) Master’s Thesis, Rice University. https://hdl.handle.net/1911/71703.


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