In Wireless Sensor Networks, designing a low overhead routing protocol is crucial for prolonging network lifetime.
Wireless sensor nodes depend on limited batteries and if they run out of battery, they cannot contribute to the sensing. There
are lots of studies aimed at prolonging network lifetime. One of the methods to extend life time of the wireless sensor
networks is clustering. In clustering approaches main aim is to prevent unnecessary messaging and decrease number of
messages exchanged by aggregating messages. Clustering also contributes to prolong network life time by ruling the child
node communications and therefore it decreases message loss caused by transmission collisions. Cluster heads in clusters
schedule nodes for sending and receiving messages. In this thesis, a clustering approach based on queries disseminated by
sinks is proposed. Two methods to prolong lifetime of sensor network by forming appropriate clusters and selecting suitable
cluster heads is developed. Performance of the proposed methods is also evaluated with computer simulations.
| Identifer | oai:union.ndltd.org:METU/oai:etd.lib.metu.edu.tr:http://etd.lib.metu.edu.tr/upload/12613516/index.pdf |
| Date | 01 June 2011 |
| Creators | Kosar, Onur |
| Contributors | Kocyigit, Altan |
| Publisher | METU |
| Source Sets | Middle East Technical Univ. |
| Language | English |
| Detected Language | English |
| Type | M.S. Thesis |
| Format | text/pdf |
| Rights | To liberate the content for public access |
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