Energy-Efficient Routing Protocol for Wireless Sensor Networks with Static Clustering and Dynamic Structure |
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Authors: | Huei-Wen Ferng Robby Tendean Arief Kurniawan |
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Affiliation: | (1) Network Management & Optimal Design Lab (NETMODE), National Technical University of Athens, Iroon Polytechniou 9, 15780 Zografou, Greece |
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Abstract: | Data gathering is an essential operation in wireless sensor networks. For periodic data gathering applications, each sensor
node has data that must be sent to a distant base station in a round of communication. Due to the limited battery power of
sensor nodes, each sensor node transmitting its sensed data to the base station directly significantly consumes its energy.
This work presents a hierarchical ring-based data gathering (HRDG) scheme for dense wireless sensor networks. A hierarchical
grid structure is constructed, and only some sensor nodes are elected as grid heads for gathering data, subsequently reducing
the total energy consumption per round. Grid heads are then organized into hierarchical rings to decrease the transmission
delay of a round. The proposed HRDG scheme focuses on reducing the energy × delay cost in a round of data gathering. Moreover, the energy × delay cost of HRDG is analyzed. Simulation results indicate that the proposed HRDG scheme outperforms other data gathering schemes
in terms of the number of rounds, the energy × delay cost and coverage ratio. |
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Keywords: | |
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