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Wyświetlanie 1-10 z 10
Tytuł:
A Study and Review of Self Managed Vehicular Networks
Autorzy:
Agbinya, J. I.
Navarrette, G. P.
Al-Ja'afreh, H.
Powiązania:
https://bibliotekanauki.pl/articles/226707.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
intelligent transportation system
vehicular network
vehicle-to-vehicle communication
roadside-to-vehicle communication
Opis:
An Intelligent transportation system (ITS) focuses on application of smart vehicles. The vehicles are equipped with significant computing, communicating and sensing capabilities to provide services to travelers or the goal of providing safety massages in emergency situations. Vehicular network may also be used for Internet access, inter-passengers communications and entertainment. To understand the behavior of such networks as well as to provide good services to the travelers many issues have to be managed, some of them are: call handover between vehicles in vehicular network, speed Vs capacity, security of call, network topology, and network fragmentation. In this paper we study such vehicular networks and explain these issues and the related work. Detailed study of practical node mobility models based on mobility states and the quality of practical links based on received signal strengths are used as inputs for system capacity studies. Experiments were run in Sydney based on drive tests with mobile terminals deployed on them. Then some new ideas for managing the vehicular networks are proposed.
Źródło:
International Journal of Electronics and Telecommunications; 2010, 56, 4; 433-444
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Safety solutions for mobile nodes authentications in vehicular networks in applications of intelligent transportation systems
Autorzy:
Franekova, M.
Durech, J.
Luley, P.
Powiązania:
https://bibliotekanauki.pl/articles/393491.pdf
Data publikacji:
2014
Wydawca:
Polskie Stowarzyszenie Telematyki Transportu
Tematy:
intelligent transportation system
vehicular network
application focused on safety
mobile node
authentication
modified cryptography construction
mathematical model
inteligentny system transportowy
sieć samochodowa
aplikacja ukierunkowana na bezpieczeństwo
uwierzytelnianie
model matematyczny
Opis:
Applications of VANET (Vehicular ad hoc Networks) networks is focused on monitoring of the safety states of vehicles or roadway by exchanging messages between vehicles and infrastructure so that the applications will be able to help a driver to handle insecure situations. They are able to warn before possible risks which can occur during the process of transportation. Essential tool for assuring of safety communications within developed applications of intelligent transportations systems are cryptography constructions on the basis of digital signature schemes. In order to assuring safety and anonymity within vehicular communications are used pseudorandom authentications methods. The authors in the paper are focused on realization of mathematical model and description of modified cryptographic constructions which are suitable for sensor networks and applications orientated to memory and performance. In these systems it is very important to use signature scheme which do not have only computational safety but must also be effective from the view of performance and must generate short digital signatures in order to communications in real time conditions.
Źródło:
Archives of Transport System Telematics; 2014, 7, 2; 29-33
1899-8208
Pojawia się w:
Archives of Transport System Telematics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An optimal innovation based adaptive estimation Kalman filter for accurate positioning in a vehicular ad-hoc network
Autorzy:
Sumithra, S.
Vadivel, R.
Powiązania:
https://bibliotekanauki.pl/articles/1838188.pdf
Data publikacji:
2021
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
Kalman filter
dead reckoning
DR
global positioning system
GPS
simulation of urban mobility
SUMO
filtr Kalmana
system nawigacji satelitarnej
Opis:
The vehicular ad-hoc network (VANET) is subject to various attacks because of its dynamic nature and ephemeral character. In VANET, vehicles communicate with each other for safety awareness. The positioning of an unknown vehicle is one of the critical factors to determine the vehicle’s trustworthiness. Although some positioning techniques have achieved a high accuracy level in VANET, they suffer from dynamic noise in real-world environments. This drawback leads to inaccuracy and unreliability during vehicle positioning. In this paper, an optimal innovation based adaptive estimation Kalman filter (OIAE-KF) is proposed. This algorithm offers an alternative solution for the basic Kalman filter and the innovation based adaptive estimation Kalman filter (IAE-KF). The proposed algorithm makes use of fusion of the global navigation satellite system (GNSS) and the inertial measurement unit (IMU) to improve its performance. The OIAE-KF works based on the innovation sequence and involves three steps such as establishing the innovation sequence, applying the innovation property, checking the optimality of the Kalman filter and, finally, estimating process noise (Q) and measurement noise (R). An optimal swapping method is introduced for optimality check. The efficiency of the proposed OIAE-KF method is proved by comparing the predictions of the existing methods such as the IAE-KF. The results show that the OIAE-KF performs better than the existing techniques. It improves the accuracy and consistency in VANET positioning.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2021, 31, 1; 45-57
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Security Requirements and Mechanisms in Vehicular Ad-Hoc Networks (VANET)
Autorzy:
Rajkumar, M. Newlin
Nithya, M.
Krithika, M.
Powiązania:
https://bibliotekanauki.pl/articles/1193569.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
ARAN
ARIADNE
Ad-hoc Networks
NDM
SEAD
VANET
Vehicular Ad-hoc Network
mobile Ad-hoc network
Opis:
In recent years, Vehicles are becomes the more intellectual system which is operated with the help of radio communications. Thus the vehicles are formed the network for communications based on the mobile Ad- hoc network (MANET) which is called as Vehicular Ad-hoc Network (VANET). However security in Vehicular Ad-hoc Networks (VANET) should become great challenges, due to communication development, because of dynamically changing protocols, high mobility of vehicles and also high partitioned network. In this paper we address the security requirements of vehicles and needed mechanisms to avoid the threats and attacks in VANET.
Źródło:
World Scientific News; 2016, 41; 200-207
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Common driving notification protocol based on classified driving behavior for cooperation intelligent autonomous vehicle using vehicular ad-hoc network technology
Autorzy:
Lin,, C.-H.
Dong, F. -Y.
Hirota, K.
Powiązania:
https://bibliotekanauki.pl/articles/91784.pdf
Data publikacji:
2015
Wydawca:
Społeczna Akademia Nauk w Łodzi. Polskie Towarzystwo Sieci Neuronowych
Tematy:
common driving notification protocol
CDNP
intelligent autonomous vehicle
identification
simulation tools
NS-3
SUMO
data packet transmission
vehicle mobility
inteligentny pojazd autonomiczny
identyfikacja
narzędzia symulacyjne
transmisja danych pakietowych
mobilność pojazdu
Opis:
A protocol, called common driving notification protocol (CDNP), is proposed based on the classified driving behavior for intelligent autonomous vehicles, and it defines a standard with common messages and format for vehicles. The common standard format and definitions of CDNP packet make the autonomous vehicles have a common language to exchange more detail driving decision information of various driving situations, decrease the identification time for one vehicle to identify the driving decisions of other vehicles before or after those driving decisions are performed. The simulation tools, including NS- 3 and SUMO, are used to simulate the wireless data packet transmission and the vehicle mobility; the experiment results present that the proposed protocol, CDNP, can increase the reaction preparing time with maximum value 250 seconds, decrease the identification time and the average travel time. Prospectively, it is decided to implement the CDNP as a protocol stack in the Linux kernel to provide the basic protocol capability for real world transmission testing.
Źródło:
Journal of Artificial Intelligence and Soft Computing Research; 2015, 5, 1; 5-21
2083-2567
2449-6499
Pojawia się w:
Journal of Artificial Intelligence and Soft Computing Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Blockchain System for Secure and Efficient UAV-to-Vehicle Communication in Smart Cities
Autorzy:
Evangeline, Suganthi
Lenin, Ashmiya
Kumaravelu, Vinoth Babu
Powiązania:
https://bibliotekanauki.pl/articles/2202980.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
blockchain technology
elliptic curve digital signature algorithm (ECDSA-192)
intelligent transportation system (ITS)
smart contract
unmanned aerial vehicle (UAV)
securehash algorithm (SHA)
vehicular ad hoc network (VANET)
Opis:
In a smart city environment, Intelligent Transportation System (ITS) enables the vehicle to generate and communicate messages for safety applications. There exists a challenge where the integrity of the message needs to be verified before passing it on to other vehicles. There should be a provision to motivate the honest vehicles who are reporting the true event messages. To achieve this, traffic regulations and event detections can be linked with blockchain technology. Any vehicle violating traffic rules will be issued with a penalty by executing the smart contract. In case any accident occurs, the vehicle nearby to the spot can immediately send the event message to Unmanned Aerial Vehicle (UAV). It will check for its credibility and proceed with rewards. The authenticity of the vehicle inside the smart city area is verified by registering itself with UAVs deployed near the city entrance. This is enabled to reduce the participation of unauthorized vehicles inside the city zone. The Secure Hash Algorithm (SHA256) and Elliptic Curve Digital Signature Algorithm (ECDSA-192) are used for communication. The result of computation time for certificate generation and vehicles involvement rate is presented.
Źródło:
International Journal of Electronics and Telecommunications; 2023, 69, 1; 133--138
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Simulation of a vehicular traffic system based on queuing network models
Autorzy:
Pasini, Leonardo
Bianchini, Lorenzo
Powiązania:
https://bibliotekanauki.pl/articles/1954450.pdf
Data publikacji:
2014
Wydawca:
Politechnika Gdańska
Tematy:
vehicular traffic systems
queuing networks
modeling
simulation
Opis:
This work is part of the research activities developed in our department on the construction of vehicle traffic system simulators (TASKQuart.22(2) 135 [1],20(1) 9 [2],17(3) 155 [3],20(3) 273 [5],14(4) 405 [6],9(4) 397 [7],Simulation Modelling Practice and Theory 17 (4) 625 [8]). The modeling of the traffic system is implemented through the use of queuing networks. In this case we analyze, through a simulation, the impact on traffic flows of a structural change that the Municipal Administration has implemented on the urban road system. The study refers to some works published by us previously about the procedures applied by us to build a simulator. In this case we have developed software allowing us to analyze the data tracked by the system simulations to display it graphically. This procedure enables us to clearly compare the traffic system behavior in its new configuration with the traffic system behavior in the previous configuration.
Źródło:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2019, 23, 1; 101-135
1428-6394
Pojawia się w:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Vehicular flow simulators based on complex queuing systems
Autorzy:
Pasini, L.
Feliziani, S.
Powiązania:
https://bibliotekanauki.pl/articles/1955296.pdf
Data publikacji:
2013
Wydawca:
Politechnika Gdańska
Tematy:
traffic systems
queueing network
modeling and simulation
Opis:
The crux of this paper is to demonstrate how it is possible to model systems of vehicular trafic by means of complex queuing network models. The objects comprising the library that we define in this work all follow the approach whereby they are composed of one or more queuing networks of service systems that are traversed by customers (vehicles).
Źródło:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2013, 17, 3-4; 155--180
1428-6394
Pojawia się w:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Simulation of a vehicular traffic system based on queueing network models: comparative analysis of two models
Autorzy:
Pasini, Leonardo
Del Giudice, Nicola
Powiązania:
https://bibliotekanauki.pl/articles/1954603.pdf
Data publikacji:
2020
Wydawca:
Politechnika Gdańska
Tematy:
vehicular traffic systems
queuing networks
modeling
simulation
systemy ruchu kołowego
sieci kolejkowe
modelowanie
symulacja
Opis:
In the previous works we presented a study for modeling and simulation of vehicular traffic systems based on queuing networks. Specifically, in paper (Pasini and Bianchini, 2019), we studied the urban network located in North Siena, in the city of Siena (Italy), in its actual layout, after the Municipality had introduced some changes for vehicular flow management. This system is based on two roundabouts and a crossroad, as shown in Figure 1. In this work, we are going to conclude our previous study, comparing the actual vehicular flow and the flow derived from an alternative system, foreseen by the PRG of the Municipality of Siena which is composed of three roundabouts and which has not been implemented yet.
Źródło:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2020, 24, 3; 243-292
1428-6394
Pojawia się w:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Simulation of road systems and queuing network models
Autorzy:
Pasini, L.
Feliziani, S.
Giorgi, M.
Powiązania:
https://bibliotekanauki.pl/articles/1964157.pdf
Data publikacji:
2005
Wydawca:
Politechnika Gdańska
Tematy:
queue systems
vehicular traffic systems
computer networks simulation
Opis:
The purpose of this paper is to describe the versatility of queuing network systems for modelling vehicular traffic flows in road systems. These techniques are applicable in a simulation context because of the complexity of the resulting models, which can not be solved by mathematical analytical solvers. Moreover, these techniques can be used to model and simulate the behaviour of an automatic control system of vehicular flow in the same frame.
Źródło:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2005, 9, 4; 397-408
1428-6394
Pojawia się w:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:
Biblioteka Nauki
Artykuł
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