Clustering is an efficient approach in a wireless sensor network (WSN) to reduce the energy consumption of nodes and to extend the lifetime of the network. Unfortunately, this approach requires that all cluster heads (CHs) transmit their data to the base station (BS), which gives rise to the long distance communications problem, and in multi-hop routing, the CHs near the BS have to forward data...

Clustering is one of the important methods for prolonging the network lifetime in Mobile AD Hoc Networks. It involves grouping of nodes into clusters and electing cluster heads (CHs) for all the clusters.CHs collect the data from respective cluster’s nodes and forward the aggregated data to main node. A major challenge in MANET is to select appropriate cluster heads. In this paper, a novel fuzz...

This paper proposes dynamic clustering for coverage-time maximization (DC-CTM) in sensor networks. The coverage-time is defined as the time until one of cluster heads (CHs) runs out of energy in clustering-based sensor networks. DC-CTM regulates cluster radii for balanced energy consumption among CHs for coverage-time maximization. By using DC-CTM, three advantages can be achieved. The first on...

The sensor nodes deployed in wireless sensor networks are extremely power constrained, so prolonging the lifetime of the entire networks is mainly considered in the design. This paper analyzes the disadvantages of excessive clustering time because of the possible uneven cluster density. As a result, we present ASMC algorithm and determine (a) first-run presetting cluster heads (CHs) number, (b)...

The energy limitations and associated problems are main challenging issues for designing and employing battery powered wireless sensor networks (WSNs). This paper proposes a novel energy-efficient clustering protocol. The protocol uses a new algorithm for distributing cluster heads (CHs) in network. The cluster formation structure is used for load balancing among far and near cluster heads to t...

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...

Energy efficient routing is one of the key issues to prolong lifetime of wireless sensor networks (WSNs). The number of cluster and the distribution of cluster heads (CHs) have a major impact on the network performance. Energy-based clustering algorithm can greatly improve energy efficiency of WSNs because it adopts a multi-hop communication in each cluster. Besides, the neighborhood of the sin...

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 WSNs is the objective of this paper that is through selecting the sub optimum se...

In clustered wireless sensor networks, cluster-heads (CHs) are the key. And the CH selection methods can affect the efficiency of the cluster and even influence the lifetime of an energy-constrained network. In this paper, we propose the Energy-consumption-cycle based Cluster-heads Selection (ECHS) protocol. ECHS selects CHs via two phases. In the first phase, CH candidates are chosen based on ...

Cluster-based Wireless Sensor Network (CWSN) is a kind of WSNs that because of avoiding long distance communications, preserve the energy of nodes and so is attractive for related applications. The criticality of most applications of WSNs and also their unattended nature, makes sensor nodes often susceptible to many types of attacks. Based on this fact, it is clear that cluster heads (CHs) are ...