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    Wyświetlanie 1-4 z 4
    Tytuł:
    Routing policy validation for the integrated system supporting routing in Software Defined Networks (SDNRoute)
    Autorzy:
    Jaglarz, Piotr
    Rzym, Grzegorz
    Jurkiewicz, Piotr
    Boryło, Piotr
    Chołda, Piotr
    Powiązania:
    https://bibliotekanauki.pl/articles/227234.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    congestion
    optimization
    quality of service (QoS)
    software-defined networks (SDN)
    validation
    Opis:
    In the article, a validation module, being a component of an integrated system supporting routing in software defined networks (SDNRoute), is proposed and thoroughly examined. The module allows for the verification of the results provided by the optimization module before these results are deployed in the production network. Routing policies are validated for their impact on the network quality parameters and against the threat of overloading (congestion).
    Źródło:
    International Journal of Electronics and Telecommunications; 2020, 66, 1; 77-83
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A Novel Software-Defined Networking Controller : the Distributed Active Information Model (DAIM)
    Autorzy:
    Pupatwibul, P.
    Banjar, A.
    Hossain, M. I.
    Braun, R.
    Moulton, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/226996.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    distributed network
    OpenFlow
    DAIM model
    software defined networking
    next generation networks
    Opis:
    This paper presents a new OpenFlow controller: the Distributed Active Information Model (DAIM). The DAIM controller was developed to explore the viability of a logically distributed control plane. It is implemented in a distributed way throughout a software-defined network, at the level of the switches. The method enables local process flows, by way of local packet switching, to be controlled by the distributed DAIM controller (as opposed to a centralised OpenFlow controller). The DAIM ecosystem is discussed with some sample code, together with flowcharts of the implemented algorithms. We present implementation details, a testing methodology, and an experimental evaluation. A performance analysis was conducted using the Cbench open benchmarking tool. Comparisons were drawn with respect to throughput and latency. It is concluded that the DAIM controller can handle a high throughput, while keeping the latency relatively low. We believe the results to date are potentially very interesting, especially in light of the fact that a key feature of the DAIM controller is that it is designed to enable the future development of autonomous local flow process and management strategies.
    Źródło:
    International Journal of Electronics and Telecommunications; 2018, 64, 2; 209-216
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of possible SDN use in the rapid prototyping processas part of the Industry 4.0
    Autorzy:
    Mazur, D.
    Paszkiewicz, A.
    Bolanowski, M.
    Budzik, G.
    Oleksy, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/200245.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    rapid prototyping
    software defined networking
    industry 4.0
    computer networks
    szybkie prototypowanie
    Przemysł 4.0
    sieć komputerowa
    SDN
    Opis:
    The article refers to the idea of using the software defined network (SDN) as an effective hardware and software platform enabling the creation and dynamic management of distributed ICT infrastructure supporting the rapid prototyping process. The authors proposed a new layered reference model remote distributed rapid prototyping that allows the development of heterogeneous, open systems of rapid prototyping in a distributed environment. Next, the implementation of this model was presented in which the functioning of the bottom layers of the model is based on the SDN architecture. Laboratory tests were carried out for this implementation which allowed to verify the proposed model in the real environment, as well as determine its potential and possibilities for further development. Thus, the approach described in the paper may contribute to the development and improvement of the efficiency of rapid prototyping processes which individual components are located in remote industrial, research and development units. Thanks to this, it will be possible to better integrate production processes as well as optimize the costs associated with prototyping. The proposed solution is also a response in this regard to the needs of industry 4.0 in the area of creating scalable, controllable and reliable platforms.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2019, 67, 1; 21-30
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    27 dBm Microwave Amplifiers with Adaptive Matching Networks
    Autorzy:
    Rosolowski, D.
    Wojtasiak, W.
    Gryglewski, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/226524.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Adaptive Power Amplifiers (APAs)
    components for Software Defined Radio
    multi-band devices
    multi-mode devices
    RF
    adaptivity
    tunable matching networks
    Opis:
    The paper describes adaptive amplifier design with varactors and pin diodes as regulators of matching networks. As examples the two amplifiers with SHF-0189 HFET transistor and different matching sections were designed and manufactured. The output power level of 27 dBm and gain higher than 13 dB within L and S-band have been achieved. The amplifier design methodology is based on the small-signal approach and DC characteristics of transistors and regulators. Amplifier adaptivity allows us to remotely control the chosen parameters such as: frequency range, output power level, gain and etc.
    Źródło:
    International Journal of Electronics and Telecommunications; 2011, 57, 1; 103-108
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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