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Wireless sensors are small devices that have the functions of sensing, communicating, and information processing. The critical issue among Wireless Sensor Networks is energy efficient utilization of sensor nodes in order to enhance the network survivability. This paper proposes a protocol i.e. (Distance Adaptive Threshold Sensitive Energy Efficient Sensor Network) DAPTEEN based on Threshold-Sensitive...
In emerging IoT era, Wireless Sensor Networks, aka WSNs are deployed for gathering data in various environments, in which efficient cluster routing mechanisms are deployed to prolong the network lifetime and improve the stability. Most existing studies focus on homogeneous WSNs. Some research workes achieved good performance based on the assumption of equal initial power and/or predefined ratio in...
The ever increasing demand for communication bandwidth and inefficient usage of the existing spectrum has led to spectrum scarcity. In this light, spectrum should be managed as a scare resource. For radio communication systems, efficient utilization of spectrum is the key requirement. The inefficient usage of the existing spectrum can be improved through opportunistic access to the licensed bands...
To track and detect continuous natured objects in wireless sensor networks, large number of sensor nodes are involved. These continuous objects like bio-chemical diffusions, forest fires, oil spills usually spread over larger area. Phenomena sensing nodes need to communicate with each other for information exchange and also send sensing information to sink, possibly by passing through many intermediate...
In cooperative spectrum sensing, wireless reporting channels (from local sensing nodes to fusion center) may suffer severe unreliability, which would make a correct local sensing result incorrect while received by fusion center. In this study, the reliability of the sensing result transmission from local sensor to fusion center is considered, and to make spectrum sensing more energy efficient, appropriate...
Interrupted reporting has recently been introduced as an effective method to increase the energy efficiency of cooperative spectrum sensing schemes in cognitive radio networks. In this paper, joint optimization of the reporting and fusion phases in a cooperative sensing with interrupted reporting is considered. This optimization aims at finding the best weights used at the fusion center to construct...
Wireless sensor networks have been recognized as promising tools to collect relevant, in-situ data for a wide range of application domains. However, such networks suffer from hard constraints including the allocated resources. Hence, current research endeavors strive to minimize the amount of data that has to be transmitted. This is typically achieved via data fusing or sending some nodes to sleep...
Efficient sensor nodes organization is one of the most critical and challenging tasks in building practical wireless sensor networks (WSNs). Due to energy efficiency, clustering has been widely used in WSNs, where each cluster head (CH) is a manager to control its members and collect sensed data from them. Currently, various CH selection techniques have been proposed. However, less emphasis was placed...
The emergence of LED luminaires that can be dimmed rapidly and frequently enables radical innovations in street lighting automation. It is possible to save considerable amounts of energy by adjusting street lighting according to the movements of individual road users. Since the same lights are often used for illuminating both vehicle lanes and sidewalks, it is necessary to detect both vehicles and...
Internet of Things regroups numerous applications. Among those, a common critical point is definitely power, as well as energy efficiency. 28nm UTBB FDSOI (28FDSOI) has demonstrated its superiority in terms of energy efficiency through numerous publications. This paper demonstrates the extra mile 28FDSOI is able to offer to designers, enabling on one hand ultra-low power (ULP) system-on-chips for...
A triple-channel BPSK UWB-based cognitive radio provides energy efficient 1Gb/s short-range connectivity by scavenging triple discrete inactive frequency bands in 3.1–10.6GHz ISM bands. The developed transceiver in 65nm CMOS achieves the minimum energy consumption of 59.7pJ/b with 1.97×10−4 BER. Die area is 4.6mm2 with on-die PLLs.
Internet of Things regroups numerous applications. Among those, a common critical point is definitely power, as well as energy efficiency. 28nm UTBB FDSOI (28FDSOI) has demonstrated its superiority in terms of energy efficiency through numerous publications. This paper demonstrates the extra mile 28FDSOI is able to offer to designers, enabling on one hand ultra-low power (ULP) system-on-chips for...
Wireless Sensor Network is a network of small battery powered sensing devices (known as sensing nodes), capable of sensing the physical parameters like temperature, humidity, pressure, motion, etc. from its environment of deployment and report it to a central node called base station. These nodes collaborate with each other to fulfill their task. As the energy source is constrained in WSNs, it should...
Wireless Sensor Network is the collection of tiny sensor nodes which are commonly used to collect information and data from different target areas. WSN is very useful to be used in the area where traditional wired or wireless network is difficult to be deployed. In WSNs, energy is crucial challenge for sensor node for sensing and transferring the data to the nearest node or to the sink as per clustering...
Wireless sensor networks (WSNs) facilitate enormous applications in the field of habitat monitoring, disaster management, security, military, etc. Sensor Nodes are very tiny in size and that leads to limited processing power and battery capacity. Resource constrained nature of sensors makes them extremely vulnerable to failures. Moreover, mobility management is an important parameter that affects...
The main concern of clustering approaches for mobile wireless sensor networks (WSNs) is to prolong the battery life of the individual sensors and the network lifetime. In this paper, we propose a homogeneous and secure weighted clustering algorithm which is an extended version of our previous algorithm (ES-WCA) for mobile WSNs using a combination of five metrics. Among these metrics lie the behavioral...
This paper presents an energy efficient cognitive radio multichannel medium access control (MAC) protocol called ECR-MAC for battlefield communications. ECR-MAC requires only a single half-duplex radio transceiver on each node that integrates the spectrum sensing at physical (PHY) layer and the packet scheduling at MAC layer. In addition to explicit frequency negotiation which is adopted by conventional...
A sensor network consisting of hundreds to thousands of small and limited powered nodes with a processing unit called sink or base station connected wirelessly is called a wireless sensor network. It is considerably reasonable to design and develop these small, limited powered sensing nodes with low cost. As these nodes are limited battery powered therefore energy conservation is a key issue. Various...
In this paper, we focused on how to get CRs collaborate effectively as well as maximize energy savings in cognitive radio sensor network. We have established a model of evolutionary game between a cognitive sensors. In order to let cognitive sensors sense spectrum effectively, we designed a contribution-punishment mechanism, which can stimulate high SNR sensors to participate in spectrum sensing....
This paper studies the wake-up scheduling problem for fixed-rate wireless transmissions with real-time constraints. Our goal is to minimize the overall energy costs, including the operating cost and wake-up cost, while still guaranteeing the deadline of each individual task. In particular, we consider the homogeneous case in which it takes the same amount of time to serve each task and each task needs...
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