371 research outputs found

    HUC-HISF: A Hybrid Intelligent Security Framework for Human-centric Ubiquitous Computing

    Get PDF
    制度:新 ; 報告番号:乙2336号 ; 学位の種類:博士(人間科学) ; 授与年月日:2012/1/18 ; 早大学位記番号:新584

    Supporting mobility in an IMS-based P2P IPTV service: A proactive context transfer mechanism

    Get PDF
    In recent years, IPTV has received an increasing amount of interest from the industry, commercial providers and the research community, alike. In this context, standardization bodies, such as ETSI and ITU-T, are specifying the architecture of IPTV systems based on IP multicast. An interesting alternative to support the IPTV service delivery relies on the Peer-to-Peer (P2P) paradigm to distribute and push the streaming effort towards the network edge. However, while P2P IPTV was studied in fixed access technologies, there has been little attention paid to the implications arising in mobile environments. One of these involves the service handover when the user moves to a different network. By analyzing previous work from the perspective of an IPTV service, we concluded that a proactive approach is necessary for the handling of inter-network handovers. In this paper, we propose a new general handover mechanism for the IP Multimedia Subsystem (IMS), while studying its applicability to a P2P IPTV service. Our solution, called proactive context transfer service, incorporates the existing IEEE 802.21 technology in order to minimize the handover delay. The proposal is validated by comparing it against solutions derived from previous work.This article has been partially granted by the Spanish MEC through the CONPARTE project (TEC2007–67966-C03–03/TCM) and by the Madrid Community through the MEDIANET project (S-2009/TIC-1468).Publicad

    Multicast Mobility in Mobile IP Version 6 (MIPv6) : Problem Statement and Brief Survey

    Get PDF
    Publisher PD

    Implementasi Dan Perancangan Online Charging System (OCS) IPTV Multichannel Pada Jaringan IPv6

    Full text link
    IPTV didefinisikan sebagai layanan multimedia berbentuk data seperti televisi, video, audio, text, grafik yang dikirimkan melalui jaringan berbasisi IP tetapi harus diberikan dengan persyaratan seperti QOS dan experience, security, interactivity dan reliability. Beberapa feature yang dimiliki oleh IPTV ini adalah IPTV dapat menyiarkan secara live atau prerecorded digital video program-program pendidikan, komersial, scheduling / penjadwalan program dsb. Tentunya hal ini menggunakan IPTV akan menguntungkan dari sisi bisnis mengingat semakin banyaknya pengguna broadband. Dengan konvergen antara televisi, telephone dan access internet, IPTV dapat berkembang sesuai dengan tren masa kini yaitu IP based, sehingga mudah di akses oleh pengguna dan proses charging/billing yang sesuai dengan standar bisnis yang ada. Oleh karena itu, “Design and Implementation Online Charging System (OCS) IPTV Multichannel on IPv6 Network“ dibuat sebagai layanan konten yang dapat digunakan untuk teknologi yang menggunakan IP based. Dalam pembuatan rancang bangun system billing pada IPTV ini dihasilkan sebuah software yang user friendly sehingga penyedia layanan IPTV dapat dengan mudah menggunakan software yang telah dibuat

    Seamsar: Seamless And Secure Handover Model For Mobile IPTV Using MIPV6

    Get PDF
    Multimedia becomes one of the most wanted content in the modern Internet world. Since the Mobile Internet Protocol version 6 (MIPv6) was proposed until today many researchers have been trying to develop methods and protocols, in order to improve the performance of mobile multimedia services. Handover is a transition process when a Mobile Node (MN) moves from home network towards foreign network. This transition causes a latency that affected the data delivery. In mobile multimedia service, extensive latency in data delivery may introduce inconveniences on the user’s side

    Key distribution technique for IPTV services with support for admission control and user defined groups

    Get PDF
    Tese de doutoramento. Engenharia Electrotécnica e de Computadores. Faculdade de Engenharia. Universidade do Porto. 200

    IPTV IMPLEMENTATION IN KOSOVO INFRASTRUCTURE

    Get PDF
    Process of Routing information is one of the essential processes ranging from smaller networks communication. With the growth and development of computer networks in the size and complexity also the issue of IPTV as a network configuration which enables transport of voice and data through DSL (Digital Subscriber Line) technology to the customer premises, today is largely deployed. These services now days are provided also in Kosovo’s network through xDSL technologies, supported by IP/Ethernet optical core network and IP based switching/routing infrastructure. The readiness of already implemented NGN platform in Kosovo’s telecommunication network and steps, which should be taken related to IPTV implementation, are further described in this section. The readiness of already implemented NGN platform in Kosovo’s telecommunication network and steps which should be taken related to IPTV implementation is further described in this section. Content digitalization and the interactive opportunities offered by IPTV services, enable digital video services to be tailored of individual users, known as self generated content. Since costs of global network distribution are decreasing, and production cost of content generation (records with simple digital camera) are being reduced dramatically, the self content generation feature represents significant added value for users themselves
    corecore