154 research outputs found
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Open-standards rich media mobile platform & rapid deployment service creation tool
This paper builds upon the work carried out by Brunel University in the field of "Fast Prototyping And Semi-automated User Interface And Application Generation for Converged Broadcast and Cellular Terminals" [1]. This work involved the development of a service creation application for interactive services on mobile devices and methodologies and tools to speed up and deskill the deployment process. This paper aims at further enhancing these tools and presents an enhanced open standards reference platform for mobile digital TV and rich media services. By using a Scalar Vector Graphics (SVG)-driven Java MIDP application (as opposed to bitmapped raster graphics-driven MHP), rich media services can be broadcast to mobile devices running various Java-supported platforms with a user interface scalable to any screen size. Moreover, the Rich Media Mobile Browser is integrated into a service creation tool, therefore enabling rapid testing and deployment of rich mobile media services.
The following sections detail the motivation behind the need for a platform which allows for rich media play-out on mobile devices, along with the rich media mobile viewing application and the tools used to create and test rich media with speed and ease
TechNews digests: Autumn 2004
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Semi-automated mobile television interactive application generation based on XHTML and Java ME
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University, 11/02/2011.Mobile Digital TV (MDTV), the hybrid of Digital Television (DTV) and mobile devices (such as mobile phones), has introduced a new way for people to watch DTV and has brought new opportunities for development in the DTV industry. Nowadays, the development of the next generation MDTV service has progressed in terms of both hardware layers and software, with interactive services/applications becoming one of the future MDTV service trends. However, current MDTV interactive services still lack in terms of attracting the consumers and the service creation and implementation process relies too much on commercial solutions, resulting in most parts of the process being proprietary. In addition, this has increased the technical demands for developers as well as has increased substantially the cost of producing and maintaining MDTV services. In light of the aforementioned situation, the Thesis has contributed to this field, by proposing an innovative MDTV service creation and consumption system based on XHTML and Java ME. On the head-end it introduces a semi-automatic creation mechanism to facilitate a less technical and more efficient interactive service creation process. This enables designers and creative individuals to be actively involved in the MDTV service creation process and to develop interactive-rich MDTV service. On the client-end it employs an open-source software environment as the interactive service MDTV consumption platform, rendering the MDTV service implementation process as less proprietary as possible. Furthermore, the Thesis offers a discussion on the different MDTV interactive application models currently used and based on the proposed software, a novel MDTV service presentation method is further introduced and adopted instead of the Rich Media and ECMAScript based methods. Finally, a series of qualitative testing procedures have been implemented with regards to conducting an essential evaluation on the operability of the proposed software system
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Multimedia delivery in the future internet
The term “Networked Media” implies that all kinds of media including text, image, 3D graphics, audio
and video are produced, distributed, shared, managed and consumed on-line through various networks,
like the Internet, Fiber, WiFi, WiMAX, GPRS, 3G and so on, in a convergent manner [1]. This white
paper is the contribution of the Media Delivery Platform (MDP) cluster and aims to cover the Networked
challenges of the Networked Media in the transition to the Future of the Internet.
Internet has evolved and changed the way we work and live. End users of the Internet have been confronted
with a bewildering range of media, services and applications and of technological innovations concerning
media formats, wireless networks, terminal types and capabilities. And there is little evidence that the pace
of this innovation is slowing. Today, over one billion of users access the Internet on regular basis, more
than 100 million users have downloaded at least one (multi)media file and over 47 millions of them do so
regularly, searching in more than 160 Exabytes1 of content. In the near future these numbers are expected
to exponentially rise. It is expected that the Internet content will be increased by at least a factor of 6, rising
to more than 990 Exabytes before 2012, fuelled mainly by the users themselves. Moreover, it is envisaged
that in a near- to mid-term future, the Internet will provide the means to share and distribute (new)
multimedia content and services with superior quality and striking flexibility, in a trusted and personalized
way, improving citizens’ quality of life, working conditions, edutainment and safety.
In this evolving environment, new transport protocols, new multimedia encoding schemes, cross-layer inthe
network adaptation, machine-to-machine communication (including RFIDs), rich 3D content as well as
community networks and the use of peer-to-peer (P2P) overlays are expected to generate new models of
interaction and cooperation, and be able to support enhanced perceived quality-of-experience (PQoE) and
innovative applications “on the move”, like virtual collaboration environments, personalised services/
media, virtual sport groups, on-line gaming, edutainment. In this context, the interaction with content
combined with interactive/multimedia search capabilities across distributed repositories, opportunistic P2P
networks and the dynamic adaptation to the characteristics of diverse mobile terminals are expected to
contribute towards such a vision.
Based on work that has taken place in a number of EC co-funded projects, in Framework Program 6 (FP6)
and Framework Program 7 (FP7), a group of experts and technology visionaries have voluntarily
contributed in this white paper aiming to describe the status, the state-of-the art, the challenges and the way
ahead in the area of Content Aware media delivery platforms
Converged digital TV services: the role of middleware and future directions of interactive television
The subject of the future of the interactive Television medium has become a topic of great interest to the academic and industrial communities particularly since in the recent years there has been a dramatic increase in the pace of innovation of convergence of digital TV systems and services. The purpose of this paper is to provide a brief overview of what we know as digital TV converged services, to present and categorise the digital Television middleware technologies that contributed to it, and to present possible future trends and directions. A new Television era of converged wireless and mobile content delivery, user-authored content, multimodal interaction, intelligent personalisation, smart space awareness, and 3D content sensations is foreseen, creating ambient and immersive experiences
Cooperating broadcast and cellular conditional access system for digital television
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.The lack of interoperability between Pay‐TV service providers and a horizontally integrated business transaction model have compromised the competition in the Pay‐TV market. In addition, the lack of interactivity with customers has resulted in high churn rate and improper security measures have contributed into considerable business loss. These issues are the main cause of high operational costs and subscription fees in the Pay‐TV systems.
This paper presents a novel end‐to‐end system architecture for Pay‐TV systems cooperating mobile and broadcasting technologies. It provides a cost‐effective, scalable, dynamic and secure access control mechanism supporting converged services and new business opportunities in Pay‐TV systems. It enhances interactivity, security and potentially reduces customer attrition and operational cost. In this platform, service providers can effectively interact with their customers, personalise their services and adopt appropriate security measures. It breaks up the rigid relationship between a viewer and set‐top box as imposed by traditional conditional access systems, thus, a viewer can fully enjoy his entitlements via an arbitrary set‐top box.
Having thoroughly considered state‐of‐the‐art technologies currently being used across the world, the thesis highlights novel use cases and presents the full design and implementation aspects of the system. The design section is enriched by providing possible security structures supported thereby. A business collaboration structure is proposed, followed by a reference model for implementing the system. Finally, the security architectures are analysed to propose the best architecture on the basis of security, complexity and set‐top box production cost criteria
Semi-automated mobile television interactive application generation based on XHTML and Java ME
Mobile Digital TV (MDTV), the hybrid of Digital Television (DTV) and mobile devices (such as mobile phones), has introduced a new way for people to watch DTV and has brought new opportunities for development in the DTV industry. Nowadays, the development of the next generation MDTV service has progressed in terms of both hardware layers and software, with interactive services/applications becoming one of the future MDTV service trends. However, current MDTV interactive services still lack in terms of attracting the consumers and the service creation and implementation process relies too much on commercial solutions, resulting in most parts of the process being proprietary. In addition, this has increased the technical demands for developers as well as has increased substantially the cost of producing and maintaining MDTV services. In light of the aforementioned situation, the Thesis has contributed to this field, by proposing an innovative MDTV service creation and consumption system based on XHTML and Java ME. On the head-end it introduces a semi-automatic creation mechanism to facilitate a less technical and more efficient interactive service creation process. This enables designers and creative individuals to be actively involved in the MDTV service creation process and to develop interactive-rich MDTV service. On the client-end it employs an open-source software environment as the interactive service MDTV consumption platform, rendering the MDTV service implementation process as less proprietary as possible. Furthermore, the Thesis offers a discussion on the different MDTV interactive application models currently used and based on the proposed software, a novel MDTV service presentation method is further introduced and adopted instead of the Rich Media and ECMAScript based methods. Finally, a series of qualitative testing procedures have been implemented with regards to conducting an essential evaluation on the operability of the proposed software system.EThOS - Electronic Theses Online ServiceGBUnited Kingdo
Semi-automated mobile television interactive application generation based on XHTML and Java ME
Mobile Digital TV (MDTV), the hybrid of Digital Television (DTV) and mobile devices (such as mobile phones), has introduced a new way for people to watch DTV and has brought new opportunities for development in the DTV industry. Nowadays, the development of the next generation MDTV service has progressed in terms of both hardware layers and software, with interactive services/applications becoming one of the future MDTV service trends. However, current MDTV interactive services still lack in terms of attracting the consumers and the service creation and implementation process relies too much on commercial solutions, resulting in most parts of the process being proprietary. In addition, this has increased the technical demands for developers as well as has increased substantially the cost of producing and maintaining MDTV services. In light of the aforementioned situation, the Thesis has contributed to this field, by proposing an innovative MDTV service creation and consumption system based on XHTML and Java ME. On the head-end it introduces a semi-automatic creation mechanism to facilitate a less technical and more efficient interactive service creation process. This enables designers and creative individuals to be actively involved in the MDTV service creation process and to develop interactive-rich MDTV service. On the client-end it employs an open-source software environment as the interactive service MDTV consumption platform, rendering the MDTV service implementation process as less proprietary as possible. Furthermore, the Thesis offers a discussion on the different MDTV interactive application models currently used and based on the proposed software, a novel MDTV service presentation method is further introduced and adopted instead of the Rich Media and ECMAScript based methods. Finally, a series of qualitative testing procedures have been implemented with regards to conducting an essential evaluation on the operability of the proposed software system.EThOS - Electronic Theses Online ServiceGBUnited Kingdo
Plataformas broadcast/multicast para redes móveis (mobile TV)
Mestrado em Engenharia de Computadores e TelemáticaO MBMS (Multimedia Broadcast/Multicast Services), uma evolução das redes
UMTS, é um sistema que permite o envio de conteúdo via broadcast e
multicast através redes móveis, como por exemplo a video-conferência,
partilha de ficheiros e o streaming de áudio e vídeo (Mobile TV). Este envio de
informação é do tipo ponto-multiponto, ou seja, existe apenas uma fonte que
envia a informação para múltiplos receptores, ao invés do que acontece com
as ligacões ponto-a-ponto. Consequentemente, o uso dos recursos da rede é
optimizado.
Com o MBMS surge uma nova entidade denominada por BM-SC (Broadcast
Multicast Service Center) que funciona como uma interface entre os
fornecedores de conteúdo e o resto da rede móvel. Esta entidade contém
informação relacionada com os serviços disponibilizados pelo operador, os
subscritores dos mesmos e desempenha funcionalidades como a
autenticação, autorização, facturação, entre outras.
O BM-SC está directamente ligado ao GGSN (Gateway GPRS Support Node)
através das interfaces Gi (dados) e Gmb (sinalização). A sinalização entre
estes dois nós é feita a partir da troca de mensagens AAA (autenticação,
autorização e accounting) baseadas no protocolo Diameter.
Assim, numa primeira fase, e para além da arquitectura MBMS, esta
dissertação aborda o principal objectivo deste trabalho, ou seja, todo o
procedimento realizado tendo em vista a implementação da sinalização entre o
BM-SC e o GGSN através de uma implementação do protocolo Diameter já
existente.
Este procedimento engloba inicialmente o estudo do protocolo Diameter,
através de uma análise à sua arquitectura e à constituição das mensagens que
o mesmo disponibiliza. Após a identificação de todos os procedimentos de
sinalização entre o GGSN e o BM-SC, são abordados os passos que
conduziram à implementação da interface Gmb através de uma aplicação em
linguagem Java baseada numa máquina de estados. Assim, resulta daí uma
aplicação onde eventos como o envio ou recepção de mensagens Diameter
implicam acções específicas como o processamento da autorização de um
utilizador para determinado serviço MBMS.
Numa segunda fase, esta dissertação contempla a evolução que hoje em dia
se tem vindo a verificar no MBMS através da integração com outras
tecnologias. A necessidade desta evolução prende-se com a crescente
competição que existe entre o MBMS e outras tecnologias similares, como é o
caso do DVB-H, DMB e do MediaFLO, e fundamentalmente pela necessidade
de obter uma visão do MBMS para além do 3G, assegurando assim uma maior
longevidade da tecnologia.
Uma dessas integrações, o IMS-MBMS proposto pelo projecto C-MOBILE e ao
qual eu estive ligado, obtém nesta dissertação um maior destaque. Deste
modo são abordadas as motivações que estiveram por trás da convergência
do IMS (IP Multimedia Subsystem) com o MBMS, a arquitectura que surge
desta convergência e a nova sinalização entre as entidades que resulta da
distribuição das funcionalidades do BM-SC pela arquitectura integrada.
ABSTRACT: MBMS (Multimedia Broadcast/Multicast Services), an enhancement of the
UTMS networks, is a system capable of sending both broadcast and multicast
content in mobile networks, such as video-conference, file sharing and
audio/video streaming (Mobile TV). This data transmission is point-tomultipoint,
i.e., there is only one source sending information to multiple
receivers, contrary to point-to-point connections. Therefore, the use of network
resources is optimized.
Along with MBMS comes a new entity called BM-SC (Broadcast Multicast
Service Center) that represents an interface between the content providers and
the mobile network. This entity contains all the information related to the
available services, its subscribers and functionalities such as authentication,
authorization, billing, among others.
The BM-SC is directly connected to GGSN (Gateway GPRS Support Node)
through Gi (data) and Gmb (signalling) interfaces. The signaling process
between these two nodes is done through the exchange of AAA
(authentication, authorization and accounting) messages based on the
Diameter protocol.
Therefore, in a first phase, besides the MBMS architecture, this document
focuses in the main objective of this work, i.e., the whole process taken to
implement the signaling between the BM-SC and the SGSN using an already
existing Diameter protocol implementation.
This process initially involves the study of the Diameter Protocol, through the
analysis of both its architecture and messages. After the identification of all
signalling procedures that occur between the GGSN and the BM-SC, the steps
that lead to the Gmb interface implementation through a Java application based
on a state machine are addressed. Thus, it results an application where events
like the sending or reception of Diameter messages involve specific actions like
a user authorization procedure for a particular MBMS service.
In a second phase, this document describes the evolution that is happening
nowadays in MBMS through the integration of other technologies. The need to
evolve is due to the growing competition between MBMS and other similar
technologies such as DVB-H, DMB and MediaFLO, but mainly because of the
need to get a MBMS vision beyond 3G, thus ensuring greater longevity of the
technology.
One of these integrations, the IMS-MBMS proposal by the C-MOBILE project
(on which I was involved), obtains a particular focus on this document. Thus,
the motivations behind the IMS (IP Multimedia Subsystem) and the MBMS
convergence, the resulting architecture and the new signaling process between
the entities after the redistribution of the BM-SC functionalities among the
integrated architecture are dealt with
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