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On the basis of analyzing the Low-Energy Adaptive Clustering Hierarchy (LEACH), a clustering routing algorithm for Wireless Sensor Network (WSN) based on ant colony algorithm (ACA) is proposed in this paper. We applied the ACA to inter-cluster routing mechanism and looked for the best path from cluster heads to base station. Thanks to the algorithm, the transmission of information, for the cluster...
In recent years, there has been a growing interest in wireless sensor network. In wireless sensor network, constrained energy is one of the most critical problems. In-network data aggregation is essential for the efficient operation of wireless sensor network. In this paper, we propose a novel energy saving topology control algorithm (ESTP). This scheme enable the node within a given distance cooperate...
Wireless sensor networks are composed of cheap sensor nodes with limited energy resources. These networks require robust wireless communication protocols that are energy efficient in order to prolong the lifetime of the entire network. This paper studies the routing protocols and analyzes the performance of LEACH (low-energy adaptive clustering hierarchy) in-depth. It is found that the cluster heads...
The optimal number of cluster heads is an important parameter of wireless sensor network performance. Network nodes will consume more energy if the number of cluster heads is too much or too little. This paper focuses on novel calculation method for optimal number of cluster heads. Base on the analysis of LEACH energy dissipation model, novel calculation method is derived from the total energy dissipation...
Wireless Sensor Network (WSN) is constructed by many energy-constrained nodes. Leach is a cluster based and energy-efficient routing protocol for WSN. In the clusters of Leach, single-hop transmissions are adopted. In this paper, a routing scheme combining multi-hop transmissions and single-hop transmissions in the clusters is proposed. The energy consumption of the single-hop transmissions as well...
Mobility of sensor nodes posed new challenges particularly in energy consumption and demands researchers' attention. Some real applications impose combined environments of fixed and mobile sensor nodes in the same network, while others demand a complete mobile sensors environment. Packet loss that occurs due to mobility of the sensor nodes is one of main challenges in Wireless Sensor Network (WSN)...
The application of wireless sensor network (WSN) is always restricted by the energy shortage of sensor nodes. In order to reduce the entire energy consumption of the WSN, a promising approach is to design light clustering algorithms. LEACH is such a well-known clustering algorithm that was designed to distribute the energy consumption to nodes in the WSN evenly. LEACH is characterized by its attractive...
Wireless sensor networks have received excessive attention in now a days. Research in all field in wireless sensor network (WSN) till now has assumed that sensors in network is homogeneous, means that all the nodes are same, especially for routing protocols that has used clustering like LEACH, LEACHC, and PEGASIS etc. But in the clustering algorithm where some nodes have to work as cluster heads,...
In sensor networks, clustering protocol such as LEACH is an efficient method to increase whole networks lifetime. However, this protocol result in high energy consumption at the cluster head node. Hence, this protocol must changes the cluster formation and cluster head node in each round to prolong the network lifetime. But this method also causes a high amount of energy consumption during the set-up...
Sensor webs consisting of nodes with limited battery power and wireless communication capability are deployed to collect useful information from an environment. Gathering sensed information in an energy efficient manner is critical to operate the sensor network for a long period of time. In [W. Heinzelman et al., 2000] a data collection problem is defined where each sensor node has a packet to be...
Wireless sensor networks (WSNs) are mainly characterized by their limited and non-replenishable energy supply. Hence, the need for energy efficient infrastructure is becoming increasingly more important since it impacts upon the network operational lifetime. Sensor node clustering is one of the techniques that can expand the lifespan of the whole network through data aggregation at the cluster head...
Wireless sensor networks (WSNs) have been widely studied and usefully employed in many applications. WSNs consist of small battery powered devices with limited energy resource. Once deployed, the tiny sensor nodes are usually inaccessible to the users. Hence, power efficiency is an important design goal that needs to be enhanced in order to prolong the effective lifetime of a network with a limited...
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