A QoS monitoring system in a heterogeneous multi-domain DVB-H platform

The MobileTV, IPTV, and DVB standards (DVB-H/T) have been defined to offer mobile users interactive multimedia services with quality of service (QoS) consistency analogous to TV services. However, the market has yet to provide effective and economical solutions for the real-time delivery of such services to the corresponding transmitters over multi-domain IP networks. The monitoring system proposed in this paper enables the QoS in the IP networks involved in the delivery of real-time multimedia content to the transmitters to be ascertained. The system utilizes the QoS parameters defined in MPEG-2 Transport Streams to detect problems occurring in the heterogeneous multi-domain IP networks. The ability to detect problems having an adverse effect on QoS allows appropriate control actions to be determined to recover the QoS across the composite IP network. The design and implementation of the proposed QoS-Monitoring system (QoS-MS) is presented, followed by analysis of experimental results that demonstrate the feasibility of the system

Análisis de la tecnología IMS (IP Multimedia Subsystem) y diseñar un servicio de transmisión multimedia de video mediante Open IMS Core para evaluar el tráfico Unicast y Multicast.

El presente trabajo tiene como objeto analizar la Tecnología IMS (IP Multimedia Subsystem), y diseñar un servicio de transmisión multimedia de video mediante Open IMS Core que permita evaluar el tráfico Unicast y Multicast. Se realizó un estudio de la plataforma IP Multimedia Subsystem (IMS) cómo una Plataforma de Entrega de Servicios en la adopción de Redes de Nueva Generación (NGN). Se planteó un diseño cuasi-experimental y diseño transversal en donde se propone realizar la evaluación del tráfico de datos Unicast y Multicast en los escenarios de streaming de video utilizando Open IMS Core y utilizando VLC, se ha utilizado los métodos inductivo, deductivo, analítico y científico, donde el enfoque de la investigación es cualitativo y cuantitativo. El alcance de la investigación es correlacional. Se evaluó los dos escenarios de streaming de video mediante observaciones subjetivas desde el punto de vista del usuario final en cuanto a la calidad del video recibido utilizando el método Mean Opinion Score (MOS) para cuantificar el impacto que tiene en el usuario la presencia de fallos del servicio. Mediante el análisis de la tecnología IMS se cumplió con el diseño e implementación del prototipo de streaming de video de acuerdo a los objetivos planteados. Por tanto, la aplicación obtenida puntualiza una plataforma ejemplo para la unificación de futuros servicios de usuario final. IMS Core al ser una plataforma de código abierto y orientada principalmente a la parte educativa se recomienda hacer los análisis necesarios para que pueda ser enlazada con plataformas educativas como moodle, e informativas como joomla, drupal etc.The purpose of this work is to analyze the IMS Technology (IP Multimedia Subsystem), and design a multimedia video transmission service through Open IMS Core that allows to evaluate Unicast and Multicast traffic. A study of the IP Multimedia Subsystem (IMS) platform was conducted as a Service Delivery Platform in the adoption of New Generation Networks (NGN). A quasi-experimental and a cross-sectional design were proposed where the evaluation of Unicast and Multicast data traffic in the video streaming scenarios using Open IMS Core and using VLC is proposed. The inductive, deductive, analytical and scientific methods were used and the research approach is both qualitative and quantitative. The scope of the research is correlational. The two video streaming scenarios were evaluated by subjective observations from the point of view of the end user regarding to the quality of the video received using the Mean Opinion Score (MOS) method to quantify the impact that the presence of faults in the service has on users. Through the analysis of IMS technology, the design and implementation of the video streaming prototype was fulfilled according to the objectives set. Therefore, the application obtained specifies an example platform for the unification of future end-user services. Since IMS Core is an open source platform and is oriented mainly to the educational area, it is recommended to make the necessary analyzes so that it can be linked to educational platforms such as Moodle and informative ones such as Joomla, Drupal, etc

Análisis de la tecnología IMS (IP Multimedia Subsystem) y diseñar un servicio de transmisión multimedia de video mediante Open IMS Core para evaluar el tráfico Unicast y Multicast.

El presente trabajo tiene como objeto analizar la Tecnología IMS (IP Multimedia Subsystem), y diseñar un servicio de transmisión multimedia de video mediante Open IMS Core que permita evaluar el tráfico Unicast y Multicast. Se realizó un estudio de la plataforma IP Multimedia Subsystem (IMS) cómo una Plataforma de Entrega de Servicios en la adopción de Redes de Nueva Generación (NGN). Se planteó un diseño cuasi-experimental y diseño transversal en donde se propone realizar la evaluación del tráfico de datos Unicast y Multicast en los escenarios de streaming de video utilizando Open IMS Core y utilizando VLC, se ha utilizado los métodos inductivo, deductivo, analítico y científico, donde el enfoque de la investigación es cualitativo y cuantitativo. El alcance de la investigación es correlacional. Se evaluó los dos escenarios de streaming de video mediante observaciones subjetivas desde el punto de vista del usuario final en cuanto a la calidad del video recibido utilizando el método Mean Opinion Score (MOS) para cuantificar el impacto que tiene en el usuario la presencia de fallos del servicio. Mediante el análisis de la tecnología IMS se cumplió con el diseño e implementación del prototipo de streaming de video de acuerdo a los objetivos planteados. Por tanto, la aplicación obtenida puntualiza una plataforma ejemplo para la unificación de futuros servicios de usuario final. IMS Core al ser una plataforma de código abierto y orientada principalmente a la parte educativa se recomienda hacer los análisis necesarios para que pueda ser enlazada con plataformas educativas como moodle, e informativas como joomla, drupal etc.The purpose of this work is to analyze the IMS Technology (IP Multimedia Subsystem), and design a multimedia video transmission service through Open IMS Core that allows to evaluate Unicast and Multicast traffic. A study of the IP Multimedia Subsystem (IMS) platform was conducted as a Service Delivery Platform in the adoption of New Generation Networks (NGN). A quasi-experimental and a cross-sectional design were proposed where the evaluation of Unicast and Multicast data traffic in the video streaming scenarios using Open IMS Core and using VLC is proposed. The inductive, deductive, analytical and scientific methods were used and the research approach is both qualitative and quantitative. The scope of the research is correlational. The two video streaming scenarios were evaluated by subjective observations from the point of view of the end user regarding to the quality of the video received using the Mean Opinion Score (MOS) method to quantify the impact that the presence of faults in the service has on users. Through the analysis of IMS technology, the design and implementation of the video streaming prototype was fulfilled according to the objectives set. Therefore, the application obtained specifies an example platform for the unification of future end-user services. Since IMS Core is an open source platform and is oriented mainly to the educational area, it is recommended to make the necessary analyzes so that it can be linked to educational platforms such as Moodle and informative ones such as Joomla, Drupal, etc

MIRAI Architecture for Heterogeneous Network

One of the keywords that describe next-generation wireless communications is "seamless." As part of the e-Japan Plan promoted by the Japanese Government, the Multimedia Integrated Network by Radio Access Innovation project has as its goal the development of new technologies to enable seamless integration of various wireless access systems for practical use by 2005. This article describes a heterogeneous network architecture including a common tool, a common platform, and a common access. In particular, software-defined radio technologies are used to develop a multiservice user terminal to access different wireless networks. The common platform for various wireless networks is based on a wireless-supporting IPv6 network. A basic access network, separated from other wireless access networks, is used as a means for wireless system discovery, signaling, and paging. A proof-of-concept experimental demonstration system is available

Energy Consumption Of Visual Sensor Networks: Impact Of Spatio-Temporal Coverage

Wireless visual sensor networks (VSNs) are expected to play a major role in future IEEE 802.15.4 personal area networks (PAN) under recently-established collision-free medium access control (MAC) protocols, such as the IEEE 802.15.4e-2012 MAC. In such environments, the VSN energy consumption is affected by the number of camera sensors deployed (spatial coverage), as well as the number of captured video frames out of which each node processes and transmits data (temporal coverage). In this paper, we explore this aspect for uniformly-formed VSNs, i.e., networks comprising identical wireless visual sensor nodes connected to a collection node via a balanced cluster-tree topology, with each node producing independent identically-distributed bitstream sizes after processing the video frames captured within each network activation interval. We derive analytic results for the energy-optimal spatio-temporal coverage parameters of such VSNs under a-priori known bounds for the number of frames to process per sensor and the number of nodes to deploy within each tier of the VSN. Our results are parametric to the probability density function characterizing the bitstream size produced by each node and the energy consumption rates of the system of interest. Experimental results reveal that our analytic results are always within 7% of the energy consumption measurements for a wide range of settings. In addition, results obtained via a multimedia subsystem show that the optimal spatio-temporal settings derived by the proposed framework allow for substantial reduction of energy consumption in comparison to ad-hoc settings. As such, our analytic modeling is useful for early-stage studies of possible VSN deployments under collision-free MAC protocols prior to costly and time-consuming experiments in the field.Comment: to appear in IEEE Transactions on Circuits and Systems for Video Technology, 201