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URN etd-0917107-092604 Statistics This thesis had been viewed 2963 times. Download 1223 times. Author Yu-Chung Chang Author's Email Address email@example.com Department Communication Engineering Year 2006 Semester 2 Degree Master Type of Document Master's Thesis Language English Page Count 43 Title MULTI-HIERARCHICAL CLUSTERING APPROACH FOR WIRELESS SENSOR NETWORKS Keyword wireless sensor networks wireless sensor networks Abstract In a wireless sensor network, sensor nodes are usually grouped into many clusters and a cluster head is responsible for sending the sensing data the base station. This thesis proposes an energy efficient clustering approach used in wireless sensor networks. We developed the simulation software to evaluate the performance of clustering approach. With more role rotations, our approach distributes the energy consumption evenly among all the sensor nodes and extends the usable life of the whole sensor network.
Our performance evaluation differs from other researches in two aspects. First, our evaluation takes into account the energy consumed for the communication of control packets. Conventional researches on wireless sensor networks tend to neglect such energy consumption. We found that the amount of energy is too significant to be neglected. Second, the energy model we adopted is based on the measurement of the use of real devices. As energy saving is the main design target of clustering approaches, the simulation based on a practical energy model should provide more realistic results.
Advisor Committee Chienhua Chen - advisor
Chia-Ming Chang - co-chair
Der-Fu Tao - co-chair
Files Date of Defense 2007-07-30 Date of Submission 2007-09-17