57 research outputs found

    ACUTA Journal of Telecommunications in Higher Education

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    In This Issue Key Findings from the ACUTA Trends Survey The Changing Face of Planning and Leadership Filling the Leadership Void Filling the Leadership Void: Culture and Collaboration Make Higher Ed Attractive Filling the Leadership Void: Strategies for Succession Management in lT The Converged Workplace Video over lP or Video over UTP Managing Networks at Brigham Young University Strategic Planning Goes Global lmplementing State of-the Art Telecommunications at Butler University ACUTA Ruth A. Michalecki Leadership Award Institutional! Excellence Award: Bryant University Interview President\u27s Message Here\u27s My Advic

    Otimização de distribuição de conteĂșdos multimĂ©dia utilizando software-defined networking

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    The general use of Internet access and user equipments, such as smartphones, tablets and personal computers, is creating a new wave of video content consumption. In the past two decades, the Television broadcasting industry went through several evolutions and changes, evolving from analog to digital distribution, standard definition to high definition TV-channels, form the IPTV method of distribution to the latest set of technologies in content distribution, OTT. The IPTV technology introduced features that changed the passive role of the client to an active one, revolutionizing the way users consume TV content. Thus, the clients’ habits started to shape the services offered, leading to an anywhere and anytime offer of video content. OTT video delivery is a reflection of those habits, meeting the users’ desire, introducing several benefits discussed in this work over the previous technologies. However, the OTT type of delivery poses several challenges in terms of scalability and threatens the Telecommunications Operators business model, because OTT companies use the Telcos infrastructure for free. Consequently, Telecommunications Operators must prepare their infrastructure for future demand while offering new services to stay competitive. This dissertation aims to contribute with insights on what infrastructure changes a Telecommunications Operator must perform with a proposed bandwidth forecasting model. The results obtained from the forecast model paved the way to the proposed video content delivery method, which aims to improve users’ perceived Quality-of-Experience while optimizing load balancing decisions. The overall results show an improvement of users’ experience using the proposed method.A generalização do acesso Ă  Internet e equipamentos pessoais como smartphones, tablets e computadores pessoais, estĂĄ a criar uma nova onda de consumo de conteĂșdos multimedia. Nas ultimas duas dĂ©cadas, a indĂșstria de transmissĂŁo de TelevisĂŁo atravessou vĂĄrias evoluçÔes e alteraçÔes, evoluindo da distribuição analĂłgica para a digital, de canais de TelevisĂŁo de definição padrĂŁo para alta definição, do mĂ©todo de distribuição IPTV, atĂ© ao Ășltimo conjunto de tecnologias na distribuição de conteĂșdos, OTT. A tecnologia IPTV introduziu novas funcionalidades que mudaram o papel passivo do cliente para um papel activo, revolucionando a forma como os utilizadores consumem conteĂșdos televisivos. Assim, os hĂĄbitos dos clientes começaram a moldar os serviços oferecidos, levando Ă  oferta de consumo de conteĂșdos em qualquer lugar e em qualquer altura. A entrega de vĂ­deo OTT Ă© um reflexo destes hĂĄbitos, indo ao encontro dos desejos dos utilizadores, que introduz inĂșmeras vantagens sobre outras tecnologias discutidas neste trabalho. No entanto, a entrega de conteĂșdos OTT cria diversos problemas de escalabilidade e ameaça o modelo de negĂłcio das Operadoras de TelecomunicaçÔes, porque os fornecedores de serviço OTT usam a infraestrutura das mesmas sem quaisquer custos. Consequentemente, os Operadores de TelecomunicaçÔes devem preparar a sua infraestrutura para o consumo futuro ao mesmo tempo que oferecem novos serviços para se manterem competitivos. Esta dissertação visa contribuir com conhecimento sobre quais alteraçÔes uma Operadora de TelecomunicaçÔes deve executar com o modelo de previsĂŁo de largura de banda proposto. Os resultados obtidos abriram caminho para o mĂ©todo de entrega de conteĂșdos multimedia proposto, que visa ao melhoramento da qualidade de experiĂȘncia do utilizador ao mesmo tempo que se optimiza o processo de balanceamento de carga. No geral os testes confirmam uma melhoria na qualidade de experiĂȘncia do utilizador usando o mĂ©todo proposto.Mestrado em Engenharia de Computadores e TelemĂĄtic

    Segment Routing: a Comprehensive Survey of Research Activities, Standardization Efforts and Implementation Results

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    Fixed and mobile telecom operators, enterprise network operators and cloud providers strive to face the challenging demands coming from the evolution of IP networks (e.g. huge bandwidth requirements, integration of billions of devices and millions of services in the cloud). Proposed in the early 2010s, Segment Routing (SR) architecture helps face these challenging demands, and it is currently being adopted and deployed. SR architecture is based on the concept of source routing and has interesting scalability properties, as it dramatically reduces the amount of state information to be configured in the core nodes to support complex services. SR architecture was first implemented with the MPLS dataplane and then, quite recently, with the IPv6 dataplane (SRv6). IPv6 SR architecture (SRv6) has been extended from the simple steering of packets across nodes to a general network programming approach, making it very suitable for use cases such as Service Function Chaining and Network Function Virtualization. In this paper we present a tutorial and a comprehensive survey on SR technology, analyzing standardization efforts, patents, research activities and implementation results. We start with an introduction on the motivations for Segment Routing and an overview of its evolution and standardization. Then, we provide a tutorial on Segment Routing technology, with a focus on the novel SRv6 solution. We discuss the standardization efforts and the patents providing details on the most important documents and mentioning other ongoing activities. We then thoroughly analyze research activities according to a taxonomy. We have identified 8 main categories during our analysis of the current state of play: Monitoring, Traffic Engineering, Failure Recovery, Centrally Controlled Architectures, Path Encoding, Network Programming, Performance Evaluation and Miscellaneous...Comment: SUBMITTED TO IEEE COMMUNICATIONS SURVEYS & TUTORIAL

    Software Defined Applications in Cellular and Optical Networks

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    abstract: Small wireless cells have the potential to overcome bottlenecks in wireless access through the sharing of spectrum resources. A novel access backhaul network architecture based on a Smart Gateway (Sm-GW) between the small cell base stations, e.g., LTE eNBs, and the conventional backhaul gateways, e.g., LTE Servicing/Packet Gateways (S/P-GWs) has been introduced to address the bottleneck. The Sm-GW flexibly schedules uplink transmissions for the eNBs. Based on software defined networking (SDN) a management mechanism that allows multiple operator to flexibly inter-operate via multiple Sm-GWs with a multitude of small cells has been proposed. This dissertation also comprehensively survey the studies that examine the SDN paradigm in optical networks. Along with the PHY functional split improvements, the performance of Distributed Converged Cable Access Platform (DCCAP) in the cable architectures especially for the Remote-PHY and Remote-MACPHY nodes has been evaluated. In the PHY functional split, in addition to the re-use of infrastructure with a common FFT module for multiple technologies, a novel cross functional split interaction to cache the repetitive QAM symbols across time at the remote node to reduce the transmission rate requirement of the fronthaul link has been proposed.Dissertation/ThesisDoctoral Dissertation Electrical Engineering 201

    ACUTA Journal of Telecommunications in Higher Education

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    In This Issue 5G\u27s Promise: 1,000 x Capacity, 1,000 x Challenges Higher-Speed WLANs About to Emerge State of the Residential Network 2013 LTE: The Next Wave of Wireless Evolution The 10 Most Costly Pitfalls of DAS Deployment and How to Avoid Them DAS on Campus: Solutions for Wireless Service Decision Criteria for Selecting a Wireless lntrusion Prevention System lnstitutional Excellence Award President\u27s Message From the CE

    Major: Electronics and Communication Engineering

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    Today, information technology is strategically important to the goals and aspirations of the business enterprises, government and high-level education institutions – university. Universities are facing new challenges with the emerging global economy characterized by the importance of providing faster communication services and improving the productivity and effectiveness of individuals. New challenges such as provides an information network that supports the demands and diversification of university issues. A new network architecture, which is a set of design principles for build a network, is one of the pillar bases. It is the cornerstone that enables the university’s faculty, researchers, students, administrators, and staff to discover, learn, reach out, and serve society. This thesis focuses on the network architecture definitions and fundamental components. Three most important characteristics of high-quality architecture are that: it’s open network architecture; it’s service-oriented characteristics and is an IP network based on packets. There are four important components in the architecture, which are: Services and Network Management, Network Control, Core Switching and Edge Access. The theoretical contribution of this study is a reference model Architecture of University Campus Network that can be followed or adapted to build a robust yet flexible network that respond next generation requirements. The results found are relevant to provide an important complete reference guide to the process of building campus network which nowadays play a very important role. Respectively, the research gives university networks a structured modular model that is reliable, robust and can easily grow

    Journal of Telecommunications in Higher Education

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    In This Issue 6 Lead, Follow or Get Out of the Way! 12 Bringing Private Housing onto the Campus LAN 16 Bundling Internet Data and Voice Technologies on the Same T3 Span 20 Mission Possible: Harper College Equips for the Future 30 UCSD Maximizes Network with One-Wire Solution 34 Optical Fiber Helps Construct a Campus for the 21st Century 38 The Laptop Initiative at Longwood Colleg

    A survey of trends and motivations regarding Communication Service Providers' metro area network implementations

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    Relevance of research on telecommunications networks is predicated upon the implementations which it explicitly claims or implicitly subsumes. This paper supports researchers through a survey of Communications Service Providers current implementations within the metro area, and trends that are expected to shape the next-generation metro area network. The survey is composed of a quantitative component, complemented by a qualitative component carried out among field experts. Among the several findings, it has been found that service providers with large subscriber base sizes, are less agile in their response to technological change than those with smaller subscriber base sizes: thus, copper media are still an important component in the set of access network technologies. On the other hand, service providers with large subscriber base sizes are strongly committed to deploying distributed access architectures, notably using remote access nodes like remote OLT and remote MAC-PHY. This study also shows that the extent of remote node deployment for multi-access edge computing is about the same as remote node deployment for distributed access architectures, indicating that these two aspects of metro area networks are likely to be co-deployed.Comment: 84 page
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