In this research, we focused on developing personas and scenarios in designing a PC Portal for IPTV solution. We employed personas to consider users and their context of use when designing for the system. Different studies have been conducted on the subject of using personas and scenarios in design projects. Some of them show that using personas have a positive effect in the outcome of the design in particular contexts. Other studies, however, suggest that designers have difficulties when using personas in their design process. The underlying cause of these problems might refer to shortcomings in construction of suitable personas, or how to use them throughout the design process. We performed a literature review on personas and scenarios, their advantages, and, how to develop them. Then, we developed personas and scenarios for IPTV problem domain and to base our personas on user study results, we used questionnaire survey and interviews to acquire knowledge about the users. We proposed a design solution and developed a prototype based on elaborated personas and scenarios to evaluate our findings. We argued different challenges that we faced while using personas and scenarios. We illustrated how graphical user interfaces can be developed to satisfy multiple personas by providing the users with different representations of the same information. We also argued why the area of personalized television needs more attention from CHI community and why people are becoming more interested in personalized TV viewing experiences. Elaborated personas and scenarios helped us focus more on users and their context. This could not be easily achieved without rendering the raw data from user studies into personas and scenarios.

El objetivo general del presente trabajo de título es diseñar e implementar un Laboratorio de IPTV, de bajo costo y con fines docentes. Esto implica definir las entidades de red necesarias, conformar métodos de administración y verificar la correcta operación del servicio final considerando la utilización de sistemas de uso libre. El Departamento de Ingeniería Eléctrica de la Universidad de Chile aborda las tecnologías emergentes, posibilitando de esta manera la actualización de conocimientos requeridos por las innovaciones en el área de las telecomunicaciones. La implementación del Laboratorio de IPTV permite el estudio docente de forma práctica al ofrecer un sistema apto para la realización de diversas pruebas de funcionamiento. Esta memoria es una continuación necesaria de trabajos de título previos del Departamento de Ingeniería Eléctrica que han seguido la línea del ofrecimiento de servicios sobre redes convergentes, de amplia adopción hoy en día en el mercado. El Laboratorio de IPTV (Internet Protocol Television) está constituido sobre la arquitectura IMS (IP Multimedia Subsystem), lo que implica que el diseño sigue los estándares de servicios de IPTV basados en IMS. Una vez levantado el núcleo IMS, se incorporan gradualmente las entidades necesarias para armar el sistema de IPTV. La construcción de la plataforma es realizada a partir de diversos proyectos de software libre, los cuales conforman cada elemento de red utilizado. La implementación final del servicio de IPTV incluye las siguientes prestaciones: canales en vivo; contenido bajo demanda (VoD); un grabador digital de video (NDVR, Network Digital Video Recorder); una guía de programación (EPG, Electronic Program Guide); un sistema de tarificación de prepago y postpago; y una interfaz web de administración del núcleo IMS y de políticas de control de QoS (Quality of Service). El cliente de la plataforma también permite el uso de otras aplicaciones basadas en IMS: VoIP (Voice over IP); videoconferencias; y mensajería instantánea. Como resultado del trabajo de título se obtiene que el Laboratorio de IPTV constituye una útil plataforma de estudio, y que otorga la posibilidad de ser ocupado como base para diversas pruebas de concepto relacionadas con servicios en IMS. Se incluye además una serie de guías prácticas con fines docentes realizadas a partir de las comprobaciones efectuadas al sistema en las que se analizan las comunicaciones de los principales protocolos involucrados: SIP, DIAMETER, RTSP, RTP y RTCP. En términos de proyecciones, se da pie a nuevos trabajos de título en los que se pueden ampliar las características aquí desarrolladas y extender las limitaciones del Laboratorio de IPTV de modo de acercarlo más a las prestaciones que debe entregar una plataforma comercial de su tipo. En particular, incluir un conjunto de herramientas de software que permita monitorear aspectos de QoS en tiempo real. Esta memoria sirve además de base y ejemplo para cualquier proyecto que desee implementar y gestionar nuevos servicios de valor agregado sobre redes IMS.

The growth of the Internet has led to research and development of several new and useful applications including video streaming. Commercial experiments are underway to determine the feasibility of multimedia broadcasting using packet based data networks alongside traditional over-the-air broadcasting. Broadcasting companies are offering low cost or free versions of video content online to both guage and at the same time generate popularity. In addition to television broadcasting, video streaming is used in a number of application areas including video conferencing, telecommuting and long distance education. Large scale video streaming has not become as widespread or widely deployed as could be expected. The reason for this is the high bandwidth requirement (and thus high cost) associated with video data. Provision of a constant stream of video data on a medium to large scale typically consumes a significant amount of bandwidth. An effect of this is that encoding bit rates are lowered and consequently video quality is degraded resulting in even slower uptake rates for video streaming services. The aim of this dissertation is to investigate peer-to-peer streaming as a potential solution to this bandwidth problem. The proposed peer-to-peer based solution relies on end user co-operation for video data distribution. This approach is highly effective in reducing the outgoing bandwidth requirement for the video streaming server. End users redistribute received video chunks amongst their respective peers and in so doing increase the potential capacity of the entire network for supporting more clients. A secondary effect of such a system is that encoding capabilities (including higher encoding bit rates or encoding of additional sub-channels) can be enhanced. Peer-to-peer distribution enables any regular user to stream video to large streaming networks with many viewers. This research includes a detailed overview of the fields of video streaming and peer-to-peer networking. Techniques for optimal video preparation and data distribution were investigated. A variety of academic and commercial peer-to-peer based multimedia broadcasting systems were analysed as a means to further define and place the proposed implementation in context with respect to other peercasting implementations. A proof-of-concept of the proposed implementation was developed, mathematically analyzed and simulated in a typical deployment scenario. Analysis was carried out to predict simulation performance and as a form of design evaluation and verification. The analysis highlighted some critical areas which resulted in adaptations to the initial design as well as conditions under which performance can be guaranteed. A simulation of the proof-of-concept system was used to determine the extent of bandwidth savings for the video server. The aim of the simulations was to show that it is possible to encode and deliver video data in real time over a peer-to-peer network. The proposed system achieved expectations and showed significant bandwidth savings for a sustantially large video streaming audience. The implementation was able to encode video in real time and continually stream video packets on time to connected peers while continually supporting network growth by connecting additional peers (or stream viewers). The system performed well and showed good performance under typical real world restrictions on available bandwith capacity. / Dissertation (MEng)--University of Pretoria, 2009. / Electrical, Electronic and Computer Engineering / unrestricted

The aim of my thesis is to analyze, propose and implement the application of IPTV Manager.The analysis probes the requirements for the application and its results are displayed in UML diagrams. The proposal is mainly focused on application's architecture and on the choice of modern technologies that faciliate its realisation.The security of the application is highly emphasized in the proposal and in the implementation itself.

Thesis deals with multicast broadcasts, discusses the type of ASM and SSM. Also deals with the principle of RTP / RTCP protocol for large multicast groups, for example, broadcasting IPTV. It was created a model for simulating the behavior of the network load in a large number of receivers. The application was developed in Java and uses the recommendations of RFC3550. There are also analysed processes of communication, initialization, log out, the structure of the data packets and signaling packets. The system is designed that can simulate multicast network and obtain the estimated parameters of the operation, or can operate in real traffic, for example, as a third-party monitor. In both modes, the measurement was carried out model situations. The results of the measurements were then compared. Principle and system control was described in detail. Output measurements are graphically processed and included in the work.

This thesis deals with locating station in the digital television broadcast over the Internet Protocol. The aim of this thesis was to develop a general model for the location of stations in the system of internet TV. This work deals with the five known methods for locating stations in distributed systems, which compares as many criteria, such as coordinates of computation speed, accuracy of results. Based on the evaluation was selected optimal method, which has been incorporated into the simulation program IPTV and tested. The result of this work is the source code of the implemented methods.

The aim of thesis is description of polymer optical fiber (POF). In particular, focusing on their application and its associated standardization. After explaining the principle of signal transmission by polymer fibers, glass fibers are compared with the polymer fibers. The attention is then paid to the types of POF and their connectors. Another part is engaged in standards of polymer fibers, according to their area of application. Following chapter describes the application of polymer fibers in practice, especially in the automotive industry and sensor technology. Standalone chapter is dedicated to deploying POF fibers in LANs. It mentions comparasion with copper and wireless networks, summarizes the advantages and disadvantages. Chapter also provides an overview of the components used in POF - optical converter, switch with optical interfaces, optical network card, etc. In the practical part is created the design of home network for two-storey family house. The proposal was implemented by CableProject CAD software, first using copper cabling (UTP category 5e) and then using polymer fibers. Finally, both proposals are compared with each other. It has been made detailed financial analysis, compared performance of instalation and methods of cable instalallation. The practical part is also dedicated to measuring the parameters of POF networks, the impact of the attenuation loss, explores methods of joining glass and polymer fibers and is engaged in IPTV transmission simulation in real conditions.

This master thesis deals with implementing triple-play services and providing it’s quality of services in heterogenous comunnication networks. The aim of thesis is to apply the- oretical methods in real case and existing network infrastructure. Practical part aims to create technical solution to prioritize network traffic based on classification of required services. The technical solution is created with conditions of being possible to add more functions and to provide scalability.

A signalization in an Internet protocol environment is commonly used for monitoring quality of service and other parameters of a network. This thesis is involved in transmission of signalization through internet protocol networks and proposes scalable solution for small and even for large-scale internet television broadcasting. The main contribution of this thesis lies in design and validation of optimal hierarchical tree on the basis of resources assigned. This is done in respect to geographical distance, network distance of each particular member of the hierarchical structure. For the design of algorithms simulations and global experimental network were used.

This master‘s thesis is focused on design and development of 2048 game for IPTV service Kuki metropolitan network Netbox. The game is design to fit into Kuki like functionally and graphically. 2048 is implemented by javascript and it saves player's score to compare with others Kuki users. Statistical data are processed in the form of scenarios for future marketing campaign to increase sales of movies.