Video Multicasting Over 3g/umts Networks

Tez (Yüksek Lisans) -- İstanbul Teknik Üniversitesi, Fen Bilimleri Enstitüsü, 2009Thesis (M.Sc.) -- İstanbul Technical University, Institute of Science and Technology, 2009Bu çalışmada, UMTS şebekelerinde kullanılan farklı çeşitteki çoğa gönderim teknolojileri olumlu ve olumsuz yanları ile birlikte açıklanmıştır. 3GPP standardı, çoklu dağıtımı desteklemek için MBMS (Multimedia Broadcast/Multicast Services – Çoğul Ortam Yayın ve Çoklu Dağıtım Servisi) ile geliştirilmiştir. Bu tez esas olarak MBMS standardı, UMTS şebekelerine uygulanabilen video aktarım protokolleri ve teknikleri ile en önemli çoklu dağıtım servisi olarak görülen mobil televizyon uygulamasına odaklanmıştır. Teknolojik yeniliklerin başarısı ve kullanıcılar tarafından kabulü önemli ölçüde içeriğe dayalıdır. İçerik, kullanıcıların isteklerine göre tasarlanmalıdır ve mobil TV için önemli bir rol oynar. Bu tezde, kullanıcı istekleri ortaya konulmuş ve ayrıca mobil TV teknolojilerinin mevcut durumu, deneme sonuçları ve ticari olarak piyasaya sürülmesi tanımlanmıştır. Hangi durumlarda, nerelerde ve ne zaman bu hizmetlerin kullanılabileceğini tanımlamak için gerçekleştirilen araştırma sonuçları ortaya konulmuştur. Tezin bu konuya katkısı yeniden belirtilip, gelecekteki araştırmalara yön verecek bazı konulardan bahsedilmiştir.In this study different types of multicast technologies which are used in UMTS networks are introduced with their pros and cons. The 3GPP standard has been enhanced with MBMS (Multimedia Broadcast/Multicast Services) to support multicasting. This thesis mainly focuses on MBMS standard, video streaming protocols and techniques that are applicable to UMTS networks and especially the mobile TV service. Success and user acceptance of new technology innovations are highly depend on the content. It needs to be designed according to consumers’ demands and play an important role for mobile TV. In this thesis, users’ demands are introduced, also mobile TV technologies current status, trial results and commercial launches are described. Research results are presented which are performed to define in what situations, where and when the service can be used. The contributions are restated and some insight into future research directions is given.Yüksek LisansM.Sc

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

Soluções de broadcast para redes 4G

Mestrado em Engenharia Electrónica e de TelecomunicaçõesA primeira difusão de conteúdos video e audio teve um forte impacto no quotidiano da população que assistiu a uma revolução nos modelos de transmissão de informação e de entretenimento. A evolução desde então foi significativa, e já na era digital, encontramo-nos face a uma nova sub-elevação da metodologia e do conceito subjacentes à transmissão de conteudos multimédia. O mundo actual apresenta, contudo, diferentes requisitos, de entre os quais se destacam a procura pela alta definição e mobilidade. A mobilidade tem sido um particular foco de atenção por parte dos operadores que exploram agora modelos para entregar uma vasta gama de serviços que sejam atractivos para os utilizadores. Esta dissertação apresenta um sumário das tecnologias emergentes de broadcast que se distinguem nas várias partes do mundo com a sua particular incidência geográfica, características e cenários de aplicação. É ainda apresentada uma arquitectura 4G abordando assuntos inerentes à mobilidade e qualidade de serviço com particular incidência nos aspectos relacionados com a integração de uma tecnologia de broadcast particular. Para avaliação da arquitectura proposta foram efectuados estudos com base num equipamento de broadcast na sua versão comercial, permitindo desta forma obter uma análise que ilustra o que os operadores podem esperar do estado actual dos dispositivos. Os resultados permitiram retirar ilações sobre o comportamento de um equipamento considerado como um produto final a disponibilizar aos operadores, quando integrado num ambiente 4G com suporte de mobilidade e QoS. Nomeadamente é discutida a sua aplicabildiade tendo em linha de conta as desvantagens introduzidas pelas características inerentes à própria tecnologia.Broadcast of video and audio through analogical television completely changed the paradigm of information and entertainment divulgation. Today, in the “digital era”, the Analogue Switch Off revolution is being held. Manufacturers and operators already show concerns regarding the support of mobility, quality of experience and of service. Delivering competitive High Definition contents and providing solutions for the average “on-the-move” user are two of the most important issues to be dealt by the service providers, which are also within the analysis scope of this work. This dissertation presents an overview on the most relevant broadcast technologies which are assumed to be of relative acceptance in their respective target market. It presents their main characteristics and applicability. 4G architectural concepts are also analyzed, closely dealing with mobility and quality of service provisioning, with particular focus on the seamless integration of broadcast technologies. As a mean to evaluate the feasibility of integrating broadcast technologies with 4G architectures, a performance evaluation study was performed using commercial equipment. In this way a several set of considerations constructed illustrating the features and functionalities which operators can expect or disregard from professional commercial broadcasting devices. Results allow the withdrawing of conclusions concerning the integration of a final broadcasting solution when incorporated within a 4G environment with QoS and mobility support. Its applicability is evaluated having in mind the performance drawbacks introduced by the specific technology, and generalized towards the gathering of more general conclusions which consider the main characteristics of the commercial broadcasting devices

The Dynamics of the Media and Contents Industries: A Synthesis

Chapters 1 and 2 of this report deal with the evolution of the media and contents sector towards a digital world, documenting the evolution of the strategy of the legacy players from a defensive behaviour to a more proactive one, striking deals with new entrants, creating new products online. They also explore the disruptions and underline the positive changes that took place recently and the weaving of new interactions between legacy players and new entrants. Chapter 3 focuses on core economic issues such as the costs structure and the mechanisms of value creation. Chapter 4 describes the business models, highlighting some of the innovative ones adapted to a digital world. Chapter 5 concentrates on other trends such as patterns of consumption and production and follows the evolution of the labour force. Chapter 6 deals with infrastructure as the enabler of the transformation has undergone and takes a closer look at the recent changes that have affected the telecom-IT ecosystem in order to identify the trends that are most likely to impact the content sector in the future. Chapters 7 and 8 introduce regulatory and policy issues. Chapter 7 relates to the funding of creation and the protection of creation (copyright as asset management) and innovation. Chapter 8 concentrates on the protection of consumers and competition.JRC.J.3-Information Societ

The emergence of the mobile internet in Japan and the UK: platforms, exchange models, and innovation 1999‐2011

In 1999 Japanese mobile operator NTT DoCoMo launched arguably the world’s first successful mobile Internet services portal called “i‐mode”. In Europe at the same time a series of failures diminished the opportunities to attract customers to the mobile Internet. Even though similar Internet technologies were available in Japan and the UK, very different markets for services developed during the initial years 1999‐2003. When the West expected Japanese firms to become dominant players in the mobile digitalisation of services during the introduction of 3G networks, it remained instead a national affair. The dominant views of how markets for mobile services operated seemed flawed.   So‐called delivery platforms were used to connect mobile phones with service contents that were often adapted from the PC world. Designing and operating service delivery platforms became a new niche market. It held a pivotal role for the output of services and competition among providers.   This thesis sets out to answer a set of inter‐related questions: How and where did firms innovate in this new and growing part of the service economy and how are new business models mediated by service delivery platforms? It argues that innovation in the digitalised economy is largely influenced by firms achieving platform leadership through coordination of both technological systems and the creation of multi‐sided exchanges. This thesis demonstrates from cases of multi‐sided markets in operator‐controlled portals, of mobile video and TV and of event ticketing in Japan and the UK that defining the scope of the firm on the network level forms the basis for incremental innovation, the dominant form of service innovation. A parallel focus on coordinating platform technology choices forms the basis for firms to trade fees, advertisements, and user data, enabling control over profitable parts of multi‐sided value networks

Diffusion Challenges for Innovation in Technology-Intensive Industries

This research forms part of a double-doctorate agreement between Plymouth University and Universidad de São Paulo.Many innovations fail on the market. Non-adoption and slow diffusion represent a high risk for companies in technology-intensive industries when looking to innovate, develop, market and launch a new technology. Its diffusion in the market is a major challenge for marketing. The consequence of a failed market introduction can be financial and reputational loss. Diffusion of innovation research shows a short-coming of researching barriers and challenges which prevent new technologies from being successful. This research sheds some light in the diversity, importance and existence of barriers for the diffusion of innovation. The originality of this investigation is a mixed-methods approach to explore barriers and challenges for the diffusion of innovation. An exploratory qualitative research is performed on the unique case of digital radio diffusion in Germany. Barriers evolve by this method in addition to barriers, which so far are described in a theoretical framework. These barriers are researched empirically via an international survey with close to one thousand participants representing experienced practitioners in marketing and sales positions from different industries. Various research findings are presented. The evolving barriers are researched and show circumstances of today, such as the dominance of internet, environmental awareness or the importance of inter-industrial collaboration. Additionally, diffusion barriers from a theoretical framework are tested with empirical data. Findings are presented as evidence for diffusion barriers and their importance for the specific example of digital radio is explained. Furthermore, barriers are also generalized for different technology-intensive industries. The existence of barriers is confirmed by empirical data and patterns of variations are outlined. Validity is achieved via triangulation of methodologies and supporting literature. The findings are presented to extend the theoretical framework and to close a gap in diffusion of innovation theory. The research contributes in very different ways to existing knowledge. Apart from the theoretical contributions, methodological and practical contributions are also made. With quantitative research, the sampling strategy for an online questionnaire considers the benefits of professional social networks on a global level to contribute empirical data to a theoretical framework. The practical contribution is directed to industry stakeholders and practitioners such as in marketing. The research findings result in a framework of barriers and supporting illustrations for technology-intensive industries. Practitioners can benefit from the illustrations for strategic decision-making in business development, product and general management, marketing and sales