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Wireless sensor networks (WSNs) has attracted a lot of attention in the recent past. WSNs have a lot of application in robotics such as path planning, mapping, localization and mapping inversely robots are also being widely used in solving WSNs problems like node localization, providing mobile battery chargers, data aggregation and detecting and reacting to sensor failure. WSNs offer an economical,...
The energy efficiency is one of the important factors to prolong wireless sensor networks (WSNs) lifetime. One way to achieve the energy efficiency is by minimizing the energy dissipation during event capturing i.e. sensing an event and during event transmitting. This paper presents an energy efficient as well as reliable event transmission protocol (RE3TP) for event driven WSNs. RE3TP consist of...
In the realm of Wireless Sensor Networks, one of the key challenges is to efficiently utilize energy of sensor nodes. A number of hierarchical routing protocols have been proposed to minimize energy utilization in WSNs. This paper presents a new technique called Shortest Path Tree Scaling Hierarchical Power Efficient Routing (SPTSHPER) protocol. SPTSHPER operates in two-phases; namely, zone setup...
A number of multifunction sensors deployed randomly with limited energy is one character of wireless sensor networks, so energy efficient is a critical factor in sensor network design. In this literature, we present a clustering protocol based on Virtual Area Partition using Double Cluster Heads scheme (VAP-DCH) for wireless sensor networks, which partitions the network and selects a Main Cluster...
Energy model is an important consideration for designing clustering protocols in Wireless Sensor Networks. By considering both energy consumption of transmitter and receiver, a more accurate energy-efficient protocols can be proposed. This paper shows node degree as a criterion to ensure minimum energy dissipation in the network when both components of the energy model are considered. This paper proposes...
In Wireless Sensor Networks (WSNs), link unidirectionality is an unavoidable phenomenon. The existence of unidirectional links can be attributed to several physical factors induced by the transceiver characteristics as well as other environmental phenomena. Transmission power heterogeneity is the dominant paradigm that leads to unidirectionality. In this study, we investigate the effects of transmission...
Wireless Sensor Network (WSN) has gained tremendous research attention recently due to their extensive applications. As sensor nodes being battery operated, many researchers have made attempts to prolong the lifespan of the WSN by reducing the-per node energy consumption and efficiently utilizing the sensor nodes. However, in the tradition WSNs, nodes were homogeneous and hence could not take full...
The characteristics such as high reliability, high scalability, fault tolerance, low cost and rapid deployment make wireless sensor networks (WSN) useful in many military and civilian applications. The limitation of sensor nodes energy necessitates that energy saving is a key issue in WSN. This paper proposes a novel cluster-based data fusion algorithm for WSN. It divides network into grids, and selects...
Wireless sensor networks (WSNs) are typically comprised of a large number of sensors which are randomly deployed for detecting and monitoring tasks. There are many researches about WSNs which are distributed and deployed in environments where they may not have been designed into a particular control path, and are often very dynamic. However, there are also some cases that WSNs can be controlled easily...
Wireless Sensor Networks being limited energy source, it must function in energy efficient manner to increase the net lifetime of the network i.e. gathering more information for a longer period from the area sensed [1].Because of limited battery charge, bandwidth and nodes in the transmission range direct communication between sensing nodes to the sink is not a optimal solution for both bandwidth...
In this paper, we are aiming to build an energy-efficient multi-level clustering hierarchy for heterogeneous wireless sensor networks. Conventional clustering protocols assume that all the sensor nodes are equipped with the same amount of energy and as a result, they cannot take the full advantage of the presence of node heterogeneity. Moreover, other existing clustering algorithms in both heterogeneous...
In recent years, wireless sensor networks become a new way to obtain information from an interesting area. There are many extensive applications of wireless sensor networks such as environment monitoring, surveillance, enemy tracking, etc. Since the available energy of sensor nodes are limited and hard to renew, energy supervision is critical for nodes and network lifetime in wireless sensor networks...
A wireless sensor network (WSN) consists of hundreds or thousands of energy-limited sensors. Distributing energy dissipation evenly throughout the sensors and saving energy are important goals in designing of WSN protocol. In this paper, we propose an improved energy-efficient algorithm based on L-DCHS (IEAL), it adds a cluster head in each cluster with a novel method, and prolong the steady-state...
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...
We propose a position-based, energy-efficient, and centralised clustering protocol for wireless sensor networks. The protocol aims at prolonging the network lifetime by evenly distributing energy load among sensor nodes in the network. A new cluster head selection algorithm is developed in the proposed protocol. In addition, the protocol uses a novel multi-hop routing approach for inter-cluster communication...
The traditional cluster routing method is a typical method for enhancing an energy efficiency, which selects cluster head in order to send the aggregated data arriving from the nodes in cluster to a base station. However the major challenges are the equal distribution of each cluster over the whole sensor network and the energy dissipation caused by the frequent information exchange between selected...
Minimizing energy dissipation and maximizing network lifetime are important issues in the design of applications and protocols for sensor networks. Energy-efficient sensor state planning consists in finding an optimal assignment of states to sensors in order to maximize network lifetime. For example, in area surveillance applications, only an optimal subset of sensors that fully covers the monitored...
In wireless sensor networks (WSNs), hierarchical network structures have the advantage of providing scalable and resource efficient solutions. Thus, finding an efficient way to generate clusters is an important topic in WSNs. To achieve this goal, this paper adapts the well-understood hierarchical agglomerative clustering (HAC) algorithm by proposing a distributed HAC (DHAC) algorithm. DHAC provides...
Wireless sensor networks (WSNs) composed of a large number of cheap microsensor nodes with limited battery power and highly correlated collected data is intelligent and autonomous system for measure and management. To reduce the redundant data among the nodes and consequently prolong networkspsila lifetime, clustering protocols which perform application-specific local data aggregation have been put...
Energy efficiency has been known as the most important problem in designing a data query system in wireless sensor networks (WSNs). In this paper, we propose a novel query method in which the clusters are constructed only in the query area as needed and destroyed after the query ends. To achieve this goal, we design and implement a Tree-Based Clustering (TBC) protocol to support upper layer applications...
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