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Wyszukujesz frazę "ad-hoc networks" wg kryterium: Temat


Tytuł:
LPAR: an adaptive routing strategy for MANETs
Autorzy:
Abolhasan, M.
Wysocki, T. A.
Dutkiewicz, E.
Powiązania:
https://bibliotekanauki.pl/articles/307737.pdf
Data publikacji:
2003
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
LPAR
GPS-based routing protocol
mobile ad hoc networks
Opis:
This paper presents a new global positioning system (GPS)-based routing protocol, called location-based point-to-point adaptive routing (LPAR) for mobile ad hoc networks. This protocol utilises a 3-state route discovery strategy in a point-to-point manner to reduce routing overhead while maximising throughput in medium to large mobile ad hoc networks. In LPAR, data transmission is adaptable to changing network conditions. This is achieved by using a primary and a secondary data forwarding strategy to transfer data from the source to the destination when the condition of the route is changed during data transmission. A simulation study is performed to compare the performance of LPAR with a number of different exisiting routing algorithms. Our results indicate that LPAR produces less overhead than other simulated routing strategies, while maintains high levels of throughput.
Źródło:
Journal of Telecommunications and Information Technology; 2003, 2; 28-37
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
LDAOR - Location and Direction Aware Opportunistic Routing in Vehicular Ad hoc Networks
Autorzy:
Barootkar, M.
Rahbar, A. G.
Sabaei, M.
Powiązania:
https://bibliotekanauki.pl/articles/309175.pdf
Data publikacji:
2016
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
carry-and-forward mechanism
contact history knowledge
direction and location aware routing
opportunistic routing
vehicular ad hoc networks
Opis:
Routing in Vehicular Ad hoc Networks (VANETs) has found significant attention because of its unique features such as lack of energy constraints and high-speed vehicles applications. Besides, since these networks are highly dynamic, design process of routing algorithms suitable for an urban environment is extremely challenging. Appropriate algorithms could be opportunistic routing (OR) where traffic transmission is performed using the store-carry-forward mechanism. An efficient OR mechanism, called Location and Direction Aware Opportunistic Routing (LDAOR), is proposed in this paper. It is based on the best neighbor node selection by using vehicles positions, vehicles directions, and prioritization of messages from buffers, based on contact histories and positions of neighbor nodes to destination. In LDAOR, when multiple nodes make contact with a carrier node, the closest neighbor node to destination is selected as the best forwarder. However, when only one node makes contact with the carrier node, the message is delivered to it if it moves toward the destination. Using the ONE simulator, the obtained performance evaluation results show that the LDAOR operates better than conventional OR algorithms. The LDAOR not only increases delivery rate, but also reduces network overhead, traffic loss, and number of aborted messages.
Źródło:
Journal of Telecommunications and Information Technology; 2016, 1; 68-83
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zarządzanie procesami rozwoju tymczasowych sieci współpracy
How to manage ad-hoc collaboration networks
Autorzy:
Bendkowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/326614.pdf
Data publikacji:
2017
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
gospodarka wirtualna
interaktywne formy organizacji pracy i produkcji
współkonfiguracja
teoria ekspansywnego uczenia się
tymczasowe sieci współpracy
virtual economy
interactive forms of work
co-configuration
theory of expansive learning
ad hoc collaboration networks
Opis:
Wirtualizacja gospodarki, rozwój i upowszechnienie się technologii mobilnych doprowadziło do powstania nowych, interaktywnych i elastycznych form organizacji pracy. Produkty i usługi powstają jako rezultat współdziałania w ramach powstałych doraźnie wirtualnych sieciach o zmiennej konfiguracji i składzie osobowym. Kierowanie ich rozwojem stanowi główne wyzwanie dla współczesnych organizacji. W artykule przedstawiono uwarunkowania zarządzania procesami powstawania i rozwoju tymczasowych sieci współpracy oraz zaprezentowano strategie i narzędzia kierowania tego typu sieciami na przykładzie studium przypadku jednoosobowych agencji projektowych.
Due to virtualization of business processes, as well as advances and popularization of mobile technologies new, interactive and flexible forms of work organization have emerged. Their core idea is that products and services are created as a result of cooperation within the ad hoc virtual networks characterized by constantly changing configuration and personal composition. The major challenge for modern organizations is to manage such networks. The article presents how to manage ad hoc collaboration networks as well as strategies and tools for managing such networks based on a case study of one-man design agencies.
Źródło:
Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska; 2017, 108; 23-34
1641-3466
Pojawia się w:
Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multicriterion analysis and choosing of the optimal routing in Ad-hoc networks
Analiza wielokryterialna i wybór optymalnej trasy routingu w sieciach Ad-hoc
Autorzy:
Bezruk, V.
Halchenko, K.
Powiązania:
https://bibliotekanauki.pl/articles/407793.pdf
Data publikacji:
2018
Wydawca:
Politechnika Lubelska. Wydawnictwo Politechniki Lubelskiej
Tematy:
ad-hoc networks
routing protocols
optimization
sieć ad hoc
protokół rutingu
optymalizacja
Opis:
The paper discusses the practical aspects of application of multicriterion approach to solving the problem of an optimal routing for wireless selforganizing networks. As the initial metrics analyzed convergence time, memory overhead, control overhead, time complexity and communication complexity.
W artykule omówiono praktyczne aspekty zastosowania podejścia wielokryterialnego do rozwiązania problemu optymalnego trasowania dla bezprzewodowych samoorganizujących się sieci. Jako początkowe metryki analizowano czas zbieżności, narzut pamięci, narzut sterowania, złożoność czasu i złożoność komunikacji.
Źródło:
Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska; 2018, 8, 3; 11-14
2083-0157
2391-6761
Pojawia się w:
Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Flow Aggregation for Energy-Aware Ad-Hoc Wireless Networks Respecting QoS Provisions
Autorzy:
Boukrim, Mustapha
Antari, Jilali
Powiązania:
https://bibliotekanauki.pl/articles/308936.pdf
Data publikacji:
2020
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
ad hoc wireless networks
flow aggregation
global energy consumption
ILP
QoS provisions
Opis:
Emerging communication technologies are now leading developers to design IT systems taking into count their energy-related considerations. Much research performed in the area of ad-hoc wireless networks tends to distribute the flows over all nodes of the network, which increases the amount of energy consumed by each node and reduces longevity of the network. To overcome these problems, this paper seeks to aggregate a set of flows within a number of nodes that is as low as possible in order to be capable of routing those flows. This proposal allows to maximize the number of network nodes that may be turned off. The proposed solution was formulated as an integer linear programming (ILP) problem using a set of energy and quality of service (QoS) constraints. This formulation minimizes the total energy consumed by the nodes to construct a topology network that is capable of meeting QoS requirement for a set flows inserted into the network. To evaluate the efficiency of the proposed model, a performance-based comparison was conducted with another routing model. The simulation results show that the proposed model offers better performance in terms of global energy consumption and network load.
Źródło:
Journal of Telecommunications and Information Technology; 2020, 1; 31-38
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sensor-Actor Network Solution for Scalable Ad-hoc Sensor Networks
Autorzy:
Chaczko, Z.
Chiu, C.
Aslanzadeh, S.
Dune, T.
Powiązania:
https://bibliotekanauki.pl/articles/227214.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Sensor-Actor Networks (SANETS)
Ad-hoc Wireless Sensor Networks (WSNS)
middleware
distributed software services
Opis:
Architects of ad-hoc wireless Sensor-Actor Networks (SANETS) face various problems and challenges. The main limitations relate to aspects such as the number of sensor nodes involved, low bandwidth, management of resources and issues related to energy management. In order for these networks to be functionally proficient, the underlying software system must be able to effectively handle unreliable and dynamic distributed communication, power constraints of wireless devices, failure of hardware devices in hostile environments and the remote allocation of distributed processing tasks throughout the wireless network. The solution must be solved in a highly scalable manner. This paper provides the requirements analysis and presents the design of a software system middleware that provides a scalable solution for ad-hoc sensor network infrastructure made of both stationary and mobile sensors and actuators.
Źródło:
International Journal of Electronics and Telecommunications; 2012, 58, 1; 55-62
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Design and Analysis of An Improved AODV Protocol Based on Clustering Approach for Internet of Vehicles (AODV-CD)
Autorzy:
Ebadinezhad, Sahar
Powiązania:
https://bibliotekanauki.pl/articles/1844586.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
ad hoc on-demand distance vector routing
clustering
internet of vehicles
vehicular ad hoc networks
quality of service
5G wireless networks
Opis:
The Internet of Vehicles (IoVs) has become a vital research area in order to enhance passenger and road safety, increasing traffic efficiency and enhanced reliable connectivity. In this regard, for monitoring and controlling the communication between IoVs, routing protocols are deployed. Frequent changes that occur in the topology often leads to major challenges in IoVs, such as dynamic topology changes, shortest routing paths and also scalability. One of the best solutions for such challenges is “clustering”. This study focuses on IoVs’ stability and to create an efficient routing protocol in dynamic environment. In this context, we proposed a novel algorithm called Cluster-based enhanced AODV for IoVs (AODV-CD) to achieve stable and efficient clustering for simplifying routing and ensuring quality of service (QoS). Our proposed protocol enhances the overall network throughput and delivery ratio, with less routing load and less delay compared to AODV. Thus, extensive simulations are carried out in SUMO and NS2 for evaluating the efficiency of the AODV-CD that is superior to the classic AODV and other recent modified AODV algorithms.
Źródło:
International Journal of Electronics and Telecommunications; 2021, 67, 1; 13-22
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On a practical approach to low-cost ad hoc wireless networking
Autorzy:
Gburzyński, P.
Olesiński, W.
Powiązania:
https://bibliotekanauki.pl/articles/308509.pdf
Data publikacji:
2008
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
ad hoc wireless networks
sensor networks
operating systems
reactive systems
specification
simulation
Opis:
Although simple wireless communication involving nodes built of microcontrollers and radio devices from the low end of the price spectrum is quite popular these days, one seldom hears about serious wireless networks built from such devices. Most of the commercially available nodes for ad hoc networking (somewhat inappropriately called "motes") are in fact quite serious computers with megabytes of RAM and rather extravagant resource demands. We show how one can build practical ad hoc networks using the smallest and cheapest devices vailable today. In our networks, such devices are capable of sustaining swarm-intelligent sophisticated routing while offering enough processing power to cater to complex applications involving distributed sensing and monitoring.
Źródło:
Journal of Telecommunications and Information Technology; 2008, 1; 29-42
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ przemieszczania się węzłów sieci ad-hoc na poziom interferencji
Influence of mobility of ad-hoc network nodes on interference
Autorzy:
Jackowski, S.
Kocot, B.
Powiązania:
https://bibliotekanauki.pl/articles/209889.pdf
Data publikacji:
2011
Wydawca:
Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
Tematy:
radiokomunikacja
interferencje
sieci ad-hoc
radio communication
interferences
ad-hoc networks
Opis:
W artykule omówiono model stochastyczny pozwalający wyznaczyć poziom interferencji w bezprzewodowych sieciach typu ad-hoc oraz przedstawiono koncepcję modelu uwzględniającego mobilność węzłów sieci. Zaproponowany model zweryfikowano poprzez badania symulacyjne z wykorzystaniem środowiska Matlab/Simulink.
This paper presents a statistical model which enables us to calculate a level of interference in wireless ad-hoc networks and a new model taking mobility of the nodes into consideration. The new model was verified through simulation using Matlab/Simulink tool.
Źródło:
Biuletyn Wojskowej Akademii Technicznej; 2011, 60, 2; 83-96
1234-5865
Pojawia się w:
Biuletyn Wojskowej Akademii Technicznej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Self-organizing wireless monitoring system for cargo containers
Autorzy:
Katulski, R. J.
Sadowski, J.
Stefański, J.
Ambroziak, S. J.
Powiązania:
https://bibliotekanauki.pl/articles/258794.pdf
Data publikacji:
2009
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
wireless monitoring
container transport
container module realization
global system concept
ad-hoc networks
Opis:
This paper presents a description of new global monitoring system for containers with its layer-modular structure, as a solution for enhance security and efficiency of container transport with particular emphasis on the practical implementation of that system for maritime container terminals. Especially the Smart Container Module (SCM) architecture and its operation as a part of the Self-Organizing Container Monitoring Network is presented.
Źródło:
Polish Maritime Research; 2009, 3; 45-50
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ɵ(1) Time Algorithm for Master Selection in Ad-hoc Wireless Networks
Autorzy:
Khattabi, Mohammed
Elmesbahi, Jelloul
Khaldoun, Mohammed
Errami, Ahmed
Bouattane, Omar
Powiązania:
https://bibliotekanauki.pl/articles/226674.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
cluster-based networks
cluster head selection
ad-hoc networks
wireless sensors networks
SDR
USRP
simulink
Opis:
This paper details a hardware implementation of a distributed Ɵ(1) time algorithm allows to select dynamically the master device in ad-hoc or cluster-based networks in a constant time regardless the number of devices in the same cluster. The algorithm allows each device to automatically detect its own status; master or slave; based on identifier without adding extra overheads or exchanging packets that slow down the network. We propose a baseband design that implements algorithm functions and we detail the hardware implementation using Matlab/Simulink and Ettus B210 USRP. Tests held in laboratory prove that algorithm works as expected.
Źródło:
International Journal of Electronics and Telecommunications; 2020, 66, 3; 521-527
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Heavy Gas Cloud Boundary Estimation and Tracking using Mobile Sensors
Autorzy:
Krzysztoń, M.
Niewiadomska-Szynkiewicz, E.
Powiązania:
https://bibliotekanauki.pl/articles/309177.pdf
Data publikacji:
2016
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
deployment strategies
heavy gas cloud boundary tracking
MANET
mobile ad hoc network
mobility models
sensor networks
Opis:
This paper addresses issues concerned with design and managing of monitoring systems comprised of mobile wireless sensing devices (MANETs). The authors focus on self-organizing, cooperative and coherent networks that maintain a continuous communication with a central operator and adopt to changes in an unknown environment to achieve a given goal. The attention is focused on the development of MANET for heavy gas clouds detection and its boundary estimating and tracking. Two strategies for constructing the MANET are described, in which sensors explore the region of interest to detect the gas cloud, create temporary network topology and finally, cover the cloud boundary, and track the moving cloud. The utility and efficiency of the proposed strategies has been justified through simulation experiments.
Źródło:
Journal of Telecommunications and Information Technology; 2016, 3; 38-49
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Metodyka badań protokołów trasowania dla sieci ad-hoc
Research methodology of routing protocols for ad hoc networks
Autorzy:
Malinowski, T.
Powiązania:
https://bibliotekanauki.pl/articles/273377.pdf
Data publikacji:
2012
Wydawca:
Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
Tematy:
sieci mobilne ad hoc
protokoły routingu dynamicznego w sieciach ad-hoc
badania symulacyjne
mobile ad hoc networks
dynamic routing protocols
simulation studies
Opis:
W artykule scharakteryzowano, jako przedmiot badań symulacyjnych, protokoły routingu dynamicznego dla sieci ad-hoc. Przedstawiono zasady przygotowania i realizacji eksperymentu symulacyjnego, służącego ocenie wpływu zastosowanego protokołu trasowania na funkcjonowanie sieci ad-hoc. Wyniki badań symulacyjnych, przeprowadzonych zgodnie z proponowanym planem eksperymentu symulacyjnego, pozwalają wskazać preferowany tryb uaktualniania tras w tablicach routingu węzłów sieci mobilnej o określonej wielkości i w zależności od szybkości przemieszczania się węzłów.
This paper describes dynamic routing protocols for ad hoc networks as a matter of simulation. The principles of preparation and implementation of a simulation experiment were presented. An example of the experiment was to illustrate the impact of the used routing protocol on the functioning of ad hoc networks. Results of the simulation will indicate the preferred mode of updating routes in routing tables of the mobile nodes of a certain size network and various speed of nodes.
Źródło:
Biuletyn Instytutu Automatyki i Robotyki; 2012, R. 18, nr 33, 33; 71-90
1427-3578
Pojawia się w:
Biuletyn Instytutu Automatyki i Robotyki
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multiobjective Approach to Localization in Wireless Sensor Networks
Autorzy:
Marks, M.
Niewiadomska-Szynkiewicz, E.
Powiązania:
https://bibliotekanauki.pl/articles/309060.pdf
Data publikacji:
2009
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
ad hoc networks
localization
simulated annealing
stochastic optimization
wireless sensor network
Opis:
Wireless sensor network localization is a complex problem that can be solved using different types of methods and algorithms. Nowadays, it is a popular research topic. What becomes obvious is that there are several criteria which are essential when we consider wireless sensor networks. Our objective is to determine accurate estimates of nodes location under the constraints for hardware cost, energy consumption and computation capabilities. In this paper the application of stochastic optimization for performing localization of nodes is discussed. We describe two phase scheme that uses a combination of the trilateration method, along with the simulated annealing optimization algorithm. We investigate two variants of our technique, i.e., centralized and distributed. The attention is paid to the convergence of our algorithm for different network topologies and trade-off between its efficiency and localization accuracy.
Źródło:
Journal of Telecommunications and Information Technology; 2009, 3; 59-67
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analytical review and study on multipath routing protocols
Autorzy:
More, Shivaprasad
Naik, Udaykumar
Powiązania:
https://bibliotekanauki.pl/articles/2050101.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
multipath routing protocol
Peak Signal to Noise Ratio
geographic routing protocol
Vehicular Ad Hoc Networks
proactive routing protocol
Opis:
Vehicular Ad Hoc Networks (VANET) constitute a promising technology for Intelligent Transport Systems (ITS). VANET are highly dynamic in their nature because of the movements of vehicles, which are acting as nodes. The routing protocol must be designed for dealing with multiple limiting conditions, like link failures, handoffs, and long congestion periods, which is very challenging. The survey of different routing protocols in VANET provides a significant information for building smart ITS. Accordingly, the present survey is devoted to the existing distinct multipath routing protocols. This review article provides a detailed account on 50 research papers, presenting the different kinds of multipath routing protocols, namely proactive routing protocols, ad-hoc-based routing protocols, Greedy Perimeter Stateless Routing (GPSR), hybrid routing protocols, as well as geographic routing protocols. Besides the classification and cursory description, the present study addresses also several of the important parameters, like evaluation metrics, implementation tool, publication year, datasets utilized, Peak Signal to Noise Ratio (PSNR), and packet end-to-end delay with respect to various techniques considered. Eventually, the research gaps and issues of various multipath routing protocols are presented with the intention of pointing out directions for future research.
Źródło:
Control and Cybernetics; 2020, 49, 4; 369-391
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł

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