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Wireless sensor networks (WSNs) consist of an enormous number of tiny sensor nodes deployed in huge numbers which are able to sense, process and transmit environmental information to the base station (BS) for a variety of applications. Energy efficiency is one of the primary concerns for maintaining WSN in operation. In this study, an energy efficient clustering protocol based on K-means algorithm...
In Wireless Sensor Network (WSN), sensor nodes are densely deployed over the region to monitor the environmental conditions like Temperature, Pressure, Sound, Vibration and Light. These networks are widely used in various fields such as medical, industrial monitoring, building and home automation or military surveillance. Sensor nodes in WSN continuously transfer the sensed information to Base Station...
In wireless sensor networks, the clustering routing protocol is commonly used for energy efficiency. However, routing protocols without proper security suffer from many security vulnerabilities. Hence, a key renewal scheme based on the clustering routing protocol is proposed. To apply the key renewal scheme with sensor authentication, sensor nodes are first authenticated during the key establishment...
Wireless Sensor Networks (WSNs) consist of small nodes with sensing, computation and wireless communications capabilities. These sensor networks interconnect a several other nodes when established in large and this opens up several technical challenges and immense application possibilities. These wireless sensor networks communicate using multi-hop wireless communications, regular ad hoc routing techniques...
This paper studies energy-efficient resource allocation schemes in Wireless Sensor Network (WSN) where sensor nodes are densely deployed on the network with infrastructure support. We first construct a network scheme and compute the energy consumption with no intelligent resource management scheme for a given quality-of-service constraint defined as Signal-to-Interference-plus-Noise Ratio (SINR)....
Recent technological advancements in the field of nanotechnology have increased the computation power of the wireless nodes while adhering to the energy constraints. This has made the use of the Wireless Sensor Networks (WSNs), more widespread, used in applications such as area monitoring, industrial monitoring, vehicle detection or military monitoring. Sensor nodes have made it possible to collect...
Wireless sensor networks (WSN) are being widely deployed and used in sensing, collecting, and disseminating data for various applications in the environmental, industrial, and military sectors. The primary concern in WSNs lies in minimizing the communication between sensor nodes while achieving the desired network operation; thus extending the life time of sensor nodes. In this paper we present an...
The conventional sensor MAC is unconcerned with data aggregation. Therefore, this paper proposes a new MAC level Data Aggregation (MDA). The goal is to reduce energy consumption in WSN (Wireless Sensor Network). The MDA has two functions that are discriminative to the conventional sensor MAC, in that it achieves efficient aggregation and the avoidance of Network beacon collisions. The MDA is designed...
Due to unique characteristics of sensor nodes, choosing an energy-efficient modulation scheme with low-complexity implementation (refereed to as green modulation) is a critical factor in the physical layer of Wireless Sensor Networks (WSNs). The main goal of this paper is to analyze and compare the energy efficiency of various sinusoidal carrier-based modulation schemes using parameters in the IEEE...
Wireless sensor network are consist of hundreds or thousands of sensor nodes deployed in an area of interest for gathering information. Sensor nodes are harshly energy constrained therefore it is important to organize in a way to save the energy during processing, receiving and communication with base station. Sensor nodes are classified in different clusters. Efficient cluster head is selected in...
The most important element of Wireless Sensor Networks technologies is energy efficiency. When we design network protocols for Wireless Sensor Networks, we should consider duplicate messages. We can achieve the goal of energy efficiency as reducing duplicate packets. Directed Diffusion is one of the energy efficient routing protocols. It selects one reinforced path from source to destination and then...
In this paper, we propose a caching scheme for wireless sensor networks which exploits cooperation among various sensor nodes in a zone formed around few sensor nodes. Zones are created by using dual radio mode of sensor nodes i.e. high and low power transmission ranges define zone size. In order to realize much larger cumulative cache, a node along with its own storage utilizes storage of sensor...
Low power consuming is one of the most critical characteristics for wireless sensor networks (WSNs). At the same time, clock synchronizations are necessary processes in normal WSNs works. The synchronization processes consume a lot of energy because of frequent communications between sensor nodes. The main energy consumers of sensor nodes are microcontrollers, radio transceivers, memory, sensors and...
We develop energy-efficiency data gathering schemes for wireless sensor networks (WSN), where the channel is characterized by the slow Rayleigh fading. We consider the homogeneous WSN which consists of a large number of sensor nodes equipped with the identical hardware. In the WSN, the sensor nodes are distributed randomly in a specific area. A mobile base station periodically stops by the area to...
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