caa a22 4500 605447098 CHVBK 20210128100130.0 cr unu---uuuuu 210128e20151101xx s 000 0 eng 10.1007/s11042-014-2139-3 doi (NATIONALLICENCE)springer-10.1007/s11042-014-2139-3 A personalized system for scalable distribution of multimedia content in multicast wireless networks [Elektronische Daten] [Ismael de Fez, Miriam Gil, Joan Fons, Juan Guerri, Vicente Pelechano] This paper presents a novel architecture for scalable multimedia content delivery over wireless networks. The architecture takes into account both the user preferences and context in order to provide personalized contents to each user. In this way, third-party applications filter the most appropriate contents for each client in each situation. One of the key characteristics of the proposal is the scalability, which is provided, apart from the use of filtering techniques, through the transmission in multicast networks. In this sense, content delivery is carried out by means of the FLUTE (File Delivery over Unidirectional Transport) protocol, which provides reliability in unidirectional environments through different mechanisms such as AL-FEC (Application Layer - Forward Error Correction) codes, used in this paper. Another key characteristic is the context-awareness and personalization of content delivery, which is provided by means of context information, user profiles, and adaptation. The system proposed is validated through several empirical studies. Specifically, the paper presents evaluations of two types that collect objective and subjective measures. The first evaluate the efficiency of the transmission protocol, analyzing how the use of appropriate transmission parameters reduces the download time (and thus increasing the Quality of Experience), which can be minimized by using caching techniques. On the other hand, the subjective measures present a study about the user experience after testing the application and analyze the accuracy of the filtering process/strategy. Results show that using AL-FEC mechanisms produces download times until four times lower than when no protection is used. Also, results prove that there is a code rate that minimizes the download time depending on the losses and that, in general, code rates 0.7 and 0.9 provide good download times for a wide range of losses. On the other hand, subjective measures indicate a high user satisfaction (more than 80%) and a relevant degree of accuracy of the content adaption. Springer Science+Business Media New York, 2014 Push content download service nationallicence Personalization nationallicence Context-awareness nationallicence File delivery over unidirectional transport (FLUTE) nationallicence Wireless networks nationallicence Multicast nationallicence de Fez Ismael Institute of Telecommunications and Multimedia Applications (iTEAM), Universitat Politècnica de València, Camino de Vera, 46022, Valencia, Spain aut Gil Miriam Research Center on Software Production Methods (PROS), Universitat Politècnica de València, Camino de Vera, 46022, Valencia, Spain aut Fons Joan Research Center on Software Production Methods (PROS), Universitat Politècnica de València, Camino de Vera, 46022, Valencia, Spain aut Guerri Juan Institute of Telecommunications and Multimedia Applications (iTEAM), Universitat Politècnica de València, Camino de Vera, 46022, Valencia, Spain aut Pelechano Vicente Research Center on Software Production Methods (PROS), Universitat Politècnica de València, Camino de Vera, 46022, Valencia, Spain aut Multimedia Tools and Applications Springer US; http://www.springer-ny.com 74/21(2015-11-01), 9595-9621 1380-7501 74:21<9595 2015 74 11042 https://doi.org/10.1007/s11042-014-2139-3 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s11042-014-2139-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- de Fez Ismael Institute of Telecommunications and Multimedia Applications (iTEAM), Universitat Politècnica de València, Camino de Vera, 46022, Valencia, Spain aut NATIONALLICENCE 700 1- Gil Miriam Research Center on Software Production Methods (PROS), Universitat Politècnica de València, Camino de Vera, 46022, Valencia, Spain aut NATIONALLICENCE 700 1- Fons Joan Research Center on Software Production Methods (PROS), Universitat Politècnica de València, Camino de Vera, 46022, Valencia, Spain aut NATIONALLICENCE 700 1- Guerri Juan Institute of Telecommunications and Multimedia Applications (iTEAM), Universitat Politècnica de València, Camino de Vera, 46022, Valencia, Spain aut NATIONALLICENCE 700 1- Pelechano Vicente Research Center on Software Production Methods (PROS), Universitat Politècnica de València, Camino de Vera, 46022, Valencia, Spain aut NATIONALLICENCE 773 0- Multimedia Tools and Applications Springer US; http://www.springer-ny.com 74/21(2015-11-01), 9595-9621 1380-7501 74:21<9595 2015 74 11042