Non-Uniform Grid-Based Coordinated Routing in Wireless Sensor Networks Page: I
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Kadiyala, Priyanka. Non-Uniform Grid-Based Coordinated Routing in Wireless Sensor
Networks. Master of Science (Computer Science and Engineering), August 2008, 71 pp., 1 table,
35 figures, 31 references.
Wireless sensor networks are ad hoc networks of tiny battery powered sensor nodes that
can organize themselves to form self-organized networks and collect information regarding
temperature, light, and pressure in an area. Though the applications of sensor networks are very
promising, sensor nodes are limited in their capability due to many factors. The main limitation
of these battery powered nodes is energy. Sensor networks are expected to work for long periods
of time once deployed and it becomes important to conserve the battery life of the nodes to
extend network lifetime.
This work examines non-uniform grid-based routing protocol as an effort to minimize
energy consumption in the network and extend network lifetime. The entire test area is divided
into non-uniformly shaped grids. Fixed source and sink nodes with unlimited energy are placed
in the network. Sensor nodes with full battery life are deployed uniformly and randomly in the
field. The source node floods the network with only the coordinator node active in each grid and
the other nodes sleeping. The sink node traces the same route back to the source node through
the same coordinators. This process continues till a coordinator node runs out of energy, when
new coordinator nodes are elected to participate in routing. Thus the network stays alive till the
link between the source and sink nodes is lost, i.e., the network is partitioned.
This work explores the efficiency of the non-uniform grid-based routing protocol for
different node densities and the non-uniform grid structure that best extends network lifetime.
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Kadiyala, Priyanka. Non-Uniform Grid-Based Coordinated Routing in Wireless Sensor Networks, thesis, August 2008; Denton, Texas. (digital.library.unt.edu/ark:/67531/metadc9078/m1/2/: accessed October 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .