The clustering Algorithm is a kind of key technique used to reduce energy consumption. It can increase the scalability and lifetime of the network. Energy-efficient clustering protocols should be designed for the characteristic of heterogeneous wireless sensor networks. We propose and evaluate a new distributed energy-efficient clustering scheme for heterogeneous wireless sensor networks, which...

A sensor network is made up of a large number of sensors with limited energy. Sensors collect environmental data then send them to the sink. Energy efficiency and thereby increasing the lifetime of sensor networks is important. Direct transfer of the data from each node to the central station will increase energy consumption. Previous research has shown that the organization of nodes in cluster...

Extending the lifetime of a wireless sensor networks remains one of the prominent research topics in recent years. Clustering has been proven to be energy-efficient in sensor networks since data routing and relaying are only operated by cluster heads. The present paper focuses on proposing two algorithms. In the former nodes organize themselves into clusters using fuzzy c-means (FCM) mechanism ...

Wireless sensor nodes challenges are supply maximum lifetime and provide secure communication to network. It has small in size and limited processing capability with very low battery power. This restriction of low battery power makes the sensor network prone to failure. So it conserves battery power or energy with some security considerations. The energy is mainly consumed for three purposes: d...

Wireless Sensor Networks (WSN) have severe energy constraints imposed by limited capacity of the internal battery of sensor nodes. These restrictions stimulate the development of energy-efficient strategies aimed at increasing the period of stability and lifetime of these networks. In this paper, we propose a centralized control to elect more appropriate Cluster Heads, assuming three levels of ...

In this paper, we analyze the operating principle of LEACH protocol and present an improved algorithm LRDA (LEACH Region Divided Algorithm) proposed for large-scale wireless sensor networks. The main idea is dividing network into different sizes of areas according to the theorems of optimal number of hops and the minimum energy consumption in ideal conditions. The cluster heads use multi-hop co...

A new time synchronization algorithm for wireless sensor networks, named clustered consensus time synchronization (CCTS). To obtain faster convergence in the clock synchronization of node and better energy efficiency, the clustering technique is incorporated into the algorithm. The CCTS includes two parts: 1) intra cluster time synchronization and 2) inter cluster time synchronization.In the in...

A wireless sensor network (WSN) is an ad-hoc wireless network composed of small sensor nodes deployed in large numbers. Sensor nodes are usually severely resource limited and power constrained. They are often deployed in accessible areas and interact closely with their physical surroundings and people. Security enforcement in WSNs is thus a challenging task. In this paper we propose a clustered...

clustering is an effective approach for managing nodes in wireless sensor network (wsn). a new method of clustering mechanism with using binary gravitational search algorithm (bgsa) in wsn, is proposed in this paper to improve the energy consumption of the sensor nodes.reducing the energy consumption of sensors in wsnsis the objective of this paper that is through selecting thesub optimum senso...