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Wyszukujesz frazę "Quality of Experience (QoE)" wg kryterium: Temat

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    Wyświetlanie 1-6 z 6
    Tytuł:
    Dimensioning aspects of SMS systems in mobile networks
    Autorzy:
    Klink, J.
    Uhl, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/134973.pdf
    Data publikacji:
    2017
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    SMS
    QoS
    Quality of Experience (QoE)
    text messaging
    queueing system
    dimensioning
    Opis:
    This paper focuses on factors affecting the dimensioning of Short Message Service (SMS) systems in mobile communications networks. Problems associated with Quality of Service (QoS) in modern communications networks in general are described, along with the main parameters that define QoS in SMS systems. The functionality of the SMS in terms of European Telecommunications Standards Institute (ETSI) standards is then explained. The creation of a queuing model is described for an SMS system which is based on ETSI documentation and will be analysed in calculations. The parameter completion rate plays an important role in SMS. Practical aspects of the End-to-End (E2E) delivery time for SMS systems are also discussed. The approach suggested in this paper and the insights gained in the course of this work can be of valuable practical use in the planning and analysis of real SMS systems.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2017, 49 (121); 110-118
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Quality of experience in the context of mobile applications
    Autorzy:
    Nawrocki, P.
    Śliwa, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/305633.pdf
    Data publikacji:
    2016
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    quality of experience (QoE)
    mobile application
    mobile device
    Android system
    quality of service (QoS)
    Opis:
    Mobile devices are among the most-popular means of browsing the Internet, sending and receiving e-mail, and sharing content on social networks. People use mobile devices and the applications installed on them in different situations throughout the day. In order to ensure that users are satisfied with a mobile application, its author has to ensure a high Quality of Experience level. The problem of automatic evaluation of the QoE parameter is a very interesting research area. Quality of Experience is a broad issue and requires the analysis of many aspects not only graphical user interfaces but also, inter alia, Quality of Service and user ratings.
    Źródło:
    Computer Science; 2016, 17 (3); 371-385
    1508-2806
    2300-7036
    Pojawia się w:
    Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Study of No-Reference Video Quality Metrics for HEVC Compression
    Autorzy:
    Rouis, K.
    Leszczuk, M.
    Janowski, M.
    Papir, Z.
    Tahar, J. B. H.
    Powiązania:
    https://bibliotekanauki.pl/articles/307568.pdf
    Data publikacji:
    2016
    Wydawca:
    Instytut Łączności - Państwowy Instytut Badawczy
    Tematy:
    High Efficiency Video Coding (HEVC)
    No-Reference metrics
    Quality of Experience (QoE)
    Video Quality Assessment
    Opis:
    The paper proposes a No-Reference (NR) quality assessment measurement originally developed for H.264, used for High Efficiency Video Coding (HEVC). In particular, authors present an investigation of NR metrics to objectively estimate the perceptual quality of a set of processed video sequences. The authors take into account typical distortions introduced by the block-based coding approaches like HEVC codec. The underlying processing used for the quality assessment considers the blockiness caused by the boundaries of each coded block and the blurring as a lack of spatial details. The correlation between the NR quality metrics and the well-known and most widely used objective metric, the Video Quality Model (VQM), is performed to validate the quality prediction accuracy based on the provided scores. The Pearson correlation coefficients obtained stand for promising results for different types of videos.
    Źródło:
    Journal of Telecommunications and Information Technology; 2016, 1; 22-28
    1509-4553
    1899-8852
    Pojawia się w:
    Journal of Telecommunications and Information Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Practical Approach to IP Scheduled Throughput Measurements in Dual Connectivity Systems
    Autorzy:
    Zięba, Arkadiusz
    Kollar, Martin
    Tatarczyk, Krzysztof
    Sadowski, Jarosław
    Powiązania:
    https://bibliotekanauki.pl/articles/27311949.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    IP Scheduled Throughput
    distributed system
    Edge computing
    cloud
    Long Term Evolution (LTE)
    Evolved Universal Terrestrial Radio Access Network (E-UTRAN)
    Carrier aggregation (CA)
    UE Throughput
    Key Performance Indicator (KPI)
    Quality of Experience (QoE)
    quality of service (QoS)
    Opis:
    IP scheduled throughput defined according to 3GPP TS 36.314 reflects user throughput regardless of traffic characteristics, and therefore has become one of the most important indicators for monitoring Quality of Service (QoS) of the end user in Evolved Universal Terrestrial Radio Access Network (E-UTRAN). However, networks built on a distributed architecture make the above definition impossible to be applied directly due to the implementation challenges. This paper gives an overview of the classical Long Term Evolution (LTE) architecture as opposed to Dual Connectivity (DC) topology and focuses on a novel method of solving the calculation issue with the IP scheduled throughput measurement in edge computing environment. Experimental results show a good agreement with the real end user perception.
    Źródło:
    International Journal of Electronics and Telecommunications; 2023, 69, 4; 645--654
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Cellular network quality evaluation at a university campus on the eve of 5G
    Autorzy:
    Falkowski-Gilski, Przemysław
    Uhl, Tadeus
    Powiązania:
    https://bibliotekanauki.pl/articles/24202518.pdf
    Data publikacji:
    2022
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    MBMS (Multimedia Broadcast Multicast Services)
    mobile technologies
    multimedia
    QoN (Quality of Network)
    QoS (Quality of Service)
    QoE (Quality of Experience)
    quality evaluation
    Opis:
    Thanks to the availability of mobile devices and the spread of broadband access around the world, the number of network users continues to grow. This has raised user awareness when it comes to the quality of content they consume. Many service providers and operators focus on monitoring QoN (Quality of Network) and QoS (Quality of Service) parameters, particularly those influenced by bandwidth and latency. However, for most end-users, quality is understood as the subjective QoE (Quality of Experience), a mixture of several individual factors. This paper presents a QoN evaluation, carried out under real-time operating conditions at a university campus, considering the overall performance of the cellular network. The study involved 50 mobile devices, i.e., smartphones, used by students during their typical activity throughout a week. The results were gathered on the eve of 5G, using a custom-built Android application. This application enabled the acquisition of valuable data about the wireless link, including download and upload speed, latency (pink), the ID of the serving base station, and type of cellular connection. This approach can be used to detect the strengths and weaknesses of back-end networks.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2022, 70 (142); 73--80
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    DAB vs DAB+ Radio Broadcasting : a Subjective Comparative Study
    Autorzy:
    Gilski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/176838.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    audio quality assessment
    broadcasting
    DAB+
    digital audio broadcasting
    QoE
    quality of experience
    QoS
    quality of service
    radio communication
    Opis:
    In the age of digital media, delivering high quality content to consumers is one of the most demanding tasks. There exist numerous broadcasting standards, with different pros and cons, and the DAB/DAB+ (Digital Audio Broadcasting) system is one of the most popular among them. From an engineer’s perspective, efficient resource management under limited bandwidth conditions has always been a challenge. In this paper a subjective quality assessment study of the DAB and DAB+ broadcasting system is performer on a representative group of signal samples. It describes the radio link, including a fully functional transmitter designed for the purpose of this test, as well as the receiver side representing a commercially available consumer device, for a truly real-time and end-to-end quality evaluation.
    Źródło:
    Archives of Acoustics; 2017, 42, 4; 715-723
    0137-5075
    Pojawia się w:
    Archives of Acoustics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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