Serwis Infona wykorzystuje pliki cookies (ciasteczka). Są to wartości tekstowe, zapamiętywane przez przeglądarkę na urządzeniu użytkownika. Nasz serwis ma dostęp do tych wartości oraz wykorzystuje je do zapamiętania danych dotyczących użytkownika, takich jak np. ustawienia (typu widok ekranu, wybór języka interfejsu), zapamiętanie zalogowania. Korzystanie z serwisu Infona oznacza zgodę na zapis informacji i ich wykorzystanie dla celów korzytania z serwisu. Więcej informacji można znaleźć w Polityce prywatności oraz Regulaminie serwisu. Zamknięcie tego okienka potwierdza zapoznanie się z informacją o plikach cookies, akceptację polityki prywatności i regulaminu oraz sposobu wykorzystywania plików cookies w serwisie. Możesz zmienić ustawienia obsługi cookies w swojej przeglądarce.
Automated vehicles are designed to take over all or part of the driver's task, in order to safely and comfortably navigate through road traffic. Automated vehicles, however, are limited by the line-ofsight characteristics of the on-board sensors, e.g., radar, lidar, and camera. To overcome this limitation, wireless inter-vehicle communication can be employed, which not only provides information of...
Multidimensional Scaling (MDS) is a widely used technique for visualizing a set of objects in an n-dimensional space. It has been extensively applied in wireless sensor networks for deriving the coordinates of a set of nodes in distance-based Localization. Many variants of MDS have been proposed to overcome issues such as partial connectivity and different types of noise in the measurements. In particular,...
This paper present and analyze an energy efficient data compression and data aggregation algorithm which results in the whole network lifetime prolonged by about 24%. In this paper, a new idea is proposed for sensor values compression based on a technique that involves feedback mechanism. In this technique, the base node in the sensor network generates Huffman code for the sensor data that needs to...
A group of wireless devices with the ability to sense physical events (sensors) or/and to perform relatively complicated actions (actors), is referred to as Wireless Sensor and Actor Network (WSAN). In this work, we propose and implement two Fuzzy Based Actor Selection Systems (FBASS): FBASS1 and FBASS2 for actor selection in WSANs. The systems decide whether the actor will be selected for the required...
As sensor nodes in a wireless network are tiny, very small, low-cost and deployed in an unattended environment, they are easily prone to many kinds of serious attacks. One such attack is Node Replication attack, where the attacker creates multiple clones /replicas of the legitimate node and deploys them at various paths in the network. As these replicas behave exactly like legitimate node, it is very...
Wireless Sensor Network (WSN) having a small sensor suffers from limited computational and communication power. These sensors are deployed randomly and sparsely in the network. One of the major problems occurring in such environment at the time of deployment is the formation of holes in the network. The hole is a communication gap, which affects the general performance of the network. An improved...
Internet of things (IoT) integrate the technologies such as sensing, communication, networking and cloud computing in wide range monitoring zone. For applications of IoT, the most appropriate monitoring network is wireless sensor networks (WSN). It is most important to develop energy efficient cluster head (CH) selection scheme to increase the network lifetime of WSNs. It is most crucial to save the...
The conventional positioning systems require the users to carry an electronic device, which helps in the localization process. Device-free Passive Localization (DfPL) techniques are used to position the users in a passive manner such that they do not engage in the process. A typical DfPL setup comprises of Wi-Fi Access Points (APs) that transmit periodic signals to Monitoring Points (MPs). Any intrusion...
Recent developments in the area of Wireless sensor networks and Mobile ad hoc networks provide tlexible and easy-to-deploy communication means for a wide range of applications without any need for an infrastructure being pre-configured. Our paper studies performance of proactive and reactive routing protocols in a scenario with agro-sensors. Our results, achieved by simulating a network both in OPNET...
In geographical network systems, face routing is the unique recovery solution for local minimum problem. A node in local minimum could not choose its neighbor node closer to the destination. Since the face routing is based on novel graph named planar graph, the nodes search a link between adjacent nodes in the graph and send their data via the link. During the planarization of the topology, many links...
A business model for the provision of wireless sensor network (WSN)-based services is proposed, where there exist three roles in the market: the WSNs, which provide sensing data; the service providers, which gather the data and compose useful services for the users; and end users. We assess an affine pricing scheme for the acquisition of the WSNs data and analyze the model in a duopoly scenario by...
This work introduces a novel security framework for wireless sensor networks (WSN) based on dynamic duty cycle, which allows nodes to detect their compromised neighbors based on unanticipated fluctuations in network traffic send rate over time. Our framework was assessed by its ability to detect advanced WSN threats (e.g., active, passive, or both attacks). One of the benefits of this framework is...
In this demonstration proposal, we present a prototype of a rapidly deployable and cost-effective railroad crossing early warning system integrated with the railway system. Specifically, the proposed demonstration deal with the safety applications based on dedicated short range communications (DSRC) protocol and devices using our different antennas. We will demonstrate the feasibility and advantages...
Sensor network virtualization enables the possibility of sharing common physical resources to multiple stakeholder applications. This paper focuses on addressing the dynamic adaptation of already assigned virtual sensor network resources to respond to time varying application demands. We propose an optimization framework that dynamically allocate applications into sensor nodes while accounting for...
A brokering platform distributing the data collected by a set of Wireless Sensor Networks (WSNs) to end customers is considered, where WSNs receive a payment from the broker proportional to the amount of data they provide and pay the network provider a flat fee, while end customers pay a flat fee to access those data. In the case where the broker can set both prices, the optimal pricing strategy,...
Nowadays, natural disasters become more and more frequent. In this paper we propose a communication for flood disaster scenario. In our system, nodes can directly demand a specific type of data without knowing its source. Our approach differs from classic Content Centric Network one by allowing to establish a direct communication with groups of nodes. A group of nodes to contact is identified by its...
This paper presents algorithms that find the optimal number of sensor nodes and the optimal location of nodes to achieve more efficient estimation in a wireless sensor network under power constraints. The network consists of sensors that are optimally placed over an area. Sensors' observations are noisy measurements of an underlying field. Each sensor processes its observation prior to transmitting...
A Wireless Sensor Network (WSN) uses a larger number of low-power sensor nodes to gather environmental information which is then wirelessly forwarded to a base station. However, sensor nodes have very limited communication ranges. Thus, relay nodes are required to ensure reliable connectivity throughout the WSN. On the other hand, relay nodes are typically more sophisticated and expensive than sensor...
Dynamic Spectrum access (DSA) is a promising solution to solve the spectrum scarcity problem by allowing unlicensed user (a.k.a Secondary User (SU)) to access the licensed spectrum in a way that does not harm the spectrum owner (a.k.a Primary User (PU)). The SU's performance can be further enhanced by utilizing cooperative transmission via an intermediate relay instead of using direct transmission...
In this paper a new approach to localization of mobile nodes in wireless sensor networks is presented which utilizes the measurement of the received signal strength indicator by multiple receivers concentrated in a small area and applies the technique of linear discriminant analysis to the received data. The concept of gathering all receivers at a single spot provides great flexibility, while good...
Podaj zakres dat dla filtrowania wyświetlonych wyników. Możesz podać datę początkową, końcową lub obie daty. Daty możesz wpisać ręcznie lub wybrać za pomocą kalendarza.