| Summary: | 碩士 === 逢甲大學 === 資訊工程學系 === 107 === In wireless sensor networks (WSNs), a great number of articles studied on reducing energy consumption of sensing nodes, through efficient clustering routing protocols,to prolong the network lifetime have been widely proposed. Most of them are implemented with hierarchical clustering techniques. Fan-shaped clustering is one of such architecture. The Fan-shaped clustering protocol first splits the sensing area into a number of concentric layers, and then independently divides each layer into different numbers of unequal-sized clusters. Duringits operation phase, it employs the clusters rotation method to make more nodes can be used as the cluster heads. However, for such protocol, due to its imperfect cluster rotation mechanism, and poor data packet relaying strategy, it cannot make the network energy efficient.
In this paper, we thus propose an Improved Energy-Efficient Fan-Shaped Clustering Routing Protocol (IFSCRP). By using clusters rotation and re-layering approaches, more sensor nodes with plenty energycan serve as the cluster heads. In addition, the proposed routing protocol also designates two sensor nodes, termed as the outer and inner relay nodes, to make the data transmission efficient, thus significantly reduce the node’s energyconsumption and effectively prolong the network lifetime.
In order to verify the effectiveness of our proposed clustering routing protocol, we conducted extensive simulations on a variety of sensing field sizes with different deployments of sensor nodes. We also compare our simulation results with those of some related protocols. The results show thatour proposed clustering routing protocol is superior to other existing counterparts, in terms of nodes’ energy consumption and the network lifetime.
|
|---|
