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Wireless sensor networks (WSNs), comprising a larger number of battery-powered sensor nodes for event monitoring and data gathering, have been widely deployed into various military and industrial applications. Since most of WSN applications aim to make full use of the energy-limited sensor nodes to monitor a wide area for a long time, energy efficiency and scalability become two important performance...
Using energy efficient way transmission is very important for extend the life of the sensor network. LEACH is a based on cluster protocol, it uses the local cluster random rotation mechanism will be the energy load is evenly distributed to all sensor nodes in the network. The cluster head will be collected and fusion data for base station. This paper proposes an improved scheme, using the random clusters...
In wireless sensor networks, it is very important to design energy-efficient communication protocols, since sensor nodes are battery-powered and thus their lifetimes are limited. In these networks, it is also very crucial to provide solutions permitting users exploit the deployed sensor network. Data query dissemination and data gathering are the main objective of this study presented in this paper...
Detecting the location of a mobile sensor node using signal strength has developed an area of dynamic research. The major issue in this situation curtails from the difficulty of how signals spread through space, particularly in the presence of hurdles such as people, walls and buildings. From another perspective, sensors are available with limited power capacity and energy resources. The signal strength...
Wireless Sensor Networks comprises of large number of sensors which are deployed in the network. These sensors are battery operated devices and energy constraint is the main problem that needs to be addressed effectively and efficiently. In order to overcome the problems that arise due to energy hole and multi hop transmission a Hybrid model of Sink Relocation for the data gathering purpose in wireless...
In a Wireless Sensor Network (WSN) hundreds of tiny sensors with limited resources are accommodated to sense the information from the field. Transfer of gathered information from the sensing field to the base station must be done in proficiently to sustain the network longer. Clustering of sensor nodes is one way to achieve this goal. This paper introduces an Energy Efficient clustered routing protocol...
The use of Wireless Sensor Networks (WSN) is anticipated to bring lot of changes in data gathering, processing and dissemination for different environments and applications. Energy consumption is the most crucial design issue in WSN. In order to solve the issue and prolong the network lifetime, energy resources of each node in WSN need to be effectively managed. With respect to energy efficiency,...
Mobile sink has been widely used in wireless sensor networks to balance energy consumption among sensor nodes and to prolong the network lifetime. But, as mobile sink moves, sensor nodes have to change their routes to mobile sink frequently, which results in a lot of energy consumption and also a very large transmission delay accordingly. Although using a static sink may lead to shorter network lifetime,...
To prolong the lifespan of wireless sensor networks, while working with the limited battery life of each sensor node, energy efficiency and energy balance are basic considerations. To achieve balanced energy consumption, non-uniform distribution methods are proposed as a network infrastructure modeling scheme. However, node transmission distance, which has significant relevance with energy efficiency,...
This paper investigates the effects of using a realistic discrete power model in cluster-based communication for wireless sensor networks (WSNs). Four different clustering protocols are evaluated by incorporating a model compliant with Crossbow MICAz motes. The energy consumption model takes into account the discrete transmit power levels of the CC2420 radio chip used by MICAz sensor nodes. The radio...
The data fusing ability of cluster head is affected by the correlation of sensed data from different nodes in Wireless Sensor Networks, which are data centered. This paper analyses the influence of regional data correlation on energy efficiency of clustering protocol, and then proposes a data aware clustering for data gathering (DACDG). DACDG uses residual energy and the correction of sensed data...
In wireless sensor networks, data transmission is an essential step for various applications, and an energy efficient data transmission mechanism is needed since the energy resource of WSN is restricted. This paper investigates the coalition-based cooperative data transmission mechanism (CC-DTM), analyzes its entire energy consumption, and finds out the optimal number of sensor nodes needed in the...
Energy efficiency is a key problem in wireless sensor networks. Keeping only a portion of nodes active and putting the others into sleep mode can conserve energy. In order to maintain satisfactory data quality, we recover the would-be sensed data for sleeping nodes. In this paper, we exploit spatial correlation among densely deployed nodes and use such correlation for data recovery. Loss in data quality...
This paper theoretically proposes a more accurate analytical method for avoiding energy hole in wireless sensor networks with nonuniform node distribution. Based on the typical energy consumption model of wireless sensor networks, we obtain the relationship of the densities of sensor nodes in different regions of network through rigorous mathematical analysis, and prove that if the densities of sensor...
Sink mobility has become an increasingly important requirement of various sensor network applications. Handling such mobile sink conditions brings new challenges to large-scale sensor networking. This investigation proposed a hybrid-structure routing protocol (HSRP) that combines the benefits of grid-based and cluster-based structures. Grid-based structure is designed to solve the cluster head selection...
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