Abstract
In order to improve the lifetime and throughput of wireless sensor networks under the limited power, an improved clustering algorithm is proposed in this paper on the basis of LEACH protocol. The energy factor is considered in this algorithm. The residual energy of all sensor nodes is referred to select cluster-heads of wireless sensor networks. The new clustering algorithm effectively improves the energy efficiency, throughput and lifetime of wireless sensor networks. The results are proved by simulations.
Highlights
The rapid development of the electronic components has promoted the low power, low-cost and multi-functional sensor nodes to appear
wireless sensor networks (WSNs) are widely applied in military detection, environmental monitoring, industrial control, intelligent buildings, transportation and other commercial areas [3, 4]
This kind of random selection may cause the instability of system, because the residual energy of WSNs is not considered in the algorithm
Summary
The rapid development of the electronic components has promoted the low power, low-cost and multi-functional sensor nodes to appear. The sensor nodes can sense information and compute and communicate They gather to form wireless sensor networks (WSNs) [1, 2]. In addition to sensing data, the nodes can process the acquired information and transmit messages to the distant base station (BS). The shortages of the non-hierarchy protocols are that the nodes spend a lot of energy and the lifetime of network is reduced during data transmission. The algorithm randomly selects cluster-heads according to a threshold value, which makes all the sensor nodes have opportunity to be cluster-heads This kind of random selection may cause the instability of system, because the residual energy of WSNs is not considered in the algorithm. Compared with LEACH, the new algorithm improves the lifetime, the throughput rate and the energy efficiency
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