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.
In order to resolve the problems of network segmentation, coverage holes and unable to conduct key monitoring upon specific target area by the conventional virtual force algorithm (abbr. VFA) in sparse network environment, a Multi-center Self-deployment Algorithm (abbr. MCSA) is presented hereby. Through construction of virtual repulsive force between nodes as well as a virtual attraction force field...
Caching of frequently accessed data in mobile ad hoc networks is significant technique that can improve the date access availability and save the communication overhead. In this paper, we propose a novel scheme for cooperative cache placement in mobile ad hoc networks. In our scheme, cache place is developed to improve the utilization rate of caching data and the cache hit ratio. As a part of cooperative...
This paper presents CARNIVORE, a system for in-situ, yet unobtrusive monitoring of cryptic, difficult-to-catch/observe wildlife in their natural habitat. CARNIVORE consists of a network of mobile and static nodes that have sensing, processing, storage, and wireless communication capabilities. One of CARNIVORE'S notable novel features is its robustness to intermittent node connectivity since, depending...
Link quality estimation is a thorny problem in wireless sensor networks, because its accuracy affects the design and the efficiency of networking protocols and applications. Especially in the context of low-power wireless, estimating the link quality poses a sort of catch-22 dilemma, whereby a large number of packet samples are required to accurately estimate a channel, but only a few samples should...
For many applications of wireless sensor networks the node localization is the critical one. In this paper, a range-free node localization algorithm based on mobile anchor node is proposed. This algorithm is built on the basis of Monte Carlo Localization algorithm. It uses the information collected by nodes to speed up the sample selection and to improve the accuracy and efficiency of location. Simulation...
With the rapid development of economy, private cars grow at an exponential rate and cities become more and more crowded. The speed of expanding urban area and increased urban road significantly lags behind the economic development. So the introduction of advanced Intelligent Transportation Systems (ITS) may be a well solution, which can solve the urban transport problems fundamentally. As the emergence...
In this study, we propose an efficient localization scheme in wireless sensor networks. The proposed scheme utilizes mobile anchors and is based on ring overlapping. In a wireless sensor network, there are some nodes knowing their locations, which are called the reference nodes, and the other nodes without the knowledge of their locations are called the blind nodes. Based on the relative RSSI (Received...
The paper proposes a cooperative distributed target tracking algorithm in mobile wireless sensor networks. The main component in the algorithm is distributed sensor-target assignment. In the key idea of the sensor-target assignment, sensors are considered as autonomous agents and the defined objective function of each sensor concentrates on two fundamental factors: the tracking accuracy and the tracking...
IEEE 802.15.4 is the emerging next generation wireless standard designed for low-rate wireless personal area networks (LR-WPAN), which suit wireless sensor networks applications. It attempts to provide a low cost, low power and short range wireless networking. The QoS is more challenging in heterogeneous wireless sensors networks, where a diverse mixture of sensors for monitoring temperature, pressure,...
This paper reports on work in progress on developing a unified co-evolutionary/pricing framework for Mobile Sensor Networks (MSN) self-organization. MSN self-organization involves cooperative sensor positioning and formation of a multi-hop Mobile Ad-hoc NETwork (MANET) enabling sensor information acquisition and communication while prolonging MSN life-span. A number of inherent MSN traits such as...
This paper presents "SimPlayGround" - a framework for the stimulative evaluation of reactive and proactive power-management approaches in distributed energy harvesting systems. Our simulation framework combines the simulation of wireless communication, the behavior of reversible power supplies and the dynamics of power consumption. It supports models of the environmental power and energy...
Wireless Sensor Network is an adhoc network having nodes with constraints like less memory and processing capability. Nodes work without knowledge of their position in the network. After random deployment of nodes, some of the nodes are in critical position as they connect one group of sensor nodes to another. If these nodes are removed from the network it may lead to partitioning of network. Most...
Although medical technologies developed in the twenty-first century have successfully increased man's life span, the pressure of modern life has consequently brought many modern civilization diseases and chronic illness. When all these problems are tackled by hospitals, they will consume considerable amount of medical resources. Alternatively, providing health care services at home is an important...
Mobile sensor networks have received significant attention recently. Mobile sensors are deployed to achieve network load balancing, prolonging network lifetime, and improving network coverage, by monitoring critical areas where manual sensor deployment cannot be performed. To achieve these goals, energy estimation is one of the main constraints and concerns to consider, while deploying mobile sensors...
The main purpose of this research work is to develop a wireless sensor network system that can continuously monitor and detect cardiovascular disease experienced in patients at remote areas. A wearable wireless sensor system (WWSS) is designed to continuously capture and transmit the ECG signals to the patient's mobile phone. The fastest alert will be issued to doctors, relatives, and hospitals, using...
The wireless ubiquitous network and various communication services are expected to be realized. The wireless ubiquitous network is defined as the converged network to integrate the mobile network with the fixed IP based network. First, the concept of wireless ubiquitous network architecture is shown which is based on IMS standardized by 3GPP. Next, Parlay is described as the solution of Open API approach...
This paper presents one inner-cluster scheduling algorithm, avoiding mobile nodes' location affect, satisfying expected coverage scale and high-effect. This excludes the number of smallest inner-cluster active nodes k, which can satisfy expected coverage scale in monitored area, according to coverage analysis theory. In inner-cluster, we only select k nodes with higher energy and nearer close to fixed...
The work presents a decentralized protocol that allows self-organization of autonomous wireless devices in mobile mesh networks. In the resulting infrastructure the routing and information services are provided in a peer-to- peer fashion. Both services are performed through multi- hop radio transmissions among participant nodes with no fixed infrastructure required and avoiding to use broadcast of...
The following topics are dealt with: network computing; performance optimization; failure management; cloud services; Web services; security; wireless sensor network; mobile ad hoc network; fault tolerance; overlay network; and telecommunication network routing.
Podaj zakres dat dla filtrowania wyświetlonych wyników. Możesz podać datę początkową, końcową lub obie daty. Daty możesz wpisać ręcznie lub wybrać za pomocą kalendarza.