26 research outputs found

    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

    Demystifying Internet of Things Security

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    Break down the misconceptions of the Internet of Things by examining the different security building blocks available in Intel Architecture (IA) based IoT platforms. This open access book reviews the threat pyramid, secure boot, chain of trust, and the SW stack leading up to defense-in-depth. The IoT presents unique challenges in implementing security and Intel has both CPU and Isolated Security Engine capabilities to simplify it. This book explores the challenges to secure these devices to make them immune to different threats originating from within and outside the network. The requirements and robustness rules to protect the assets vary greatly and there is no single blanket solution approach to implement security. Demystifying Internet of Things Security provides clarity to industry professionals and provides and overview of different security solutions What You'll Learn Secure devices, immunizing them against different threats originating from inside and outside the network Gather an overview of the different security building blocks available in Intel Architecture (IA) based IoT platforms Understand the threat pyramid, secure boot, chain of trust, and the software stack leading up to defense-in-depth Who This Book Is For Strategists, developers, architects, and managers in the embedded and Internet of Things (IoT) space trying to understand and implement the security in the IoT devices/platforms

    Next Generation Connectivity: A Review of Broadband Internet Transitions and Policy From Around the World

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    Fostering the development of a ubiquitously networked society, connected over high-capacity networks, is a widely shared goal among both developed and developing countries. High capacity networks are seen as strategic infrastructure, intended to contribute to high and sustainable economic growth and to core aspects of human development. In the pursuit of this goal, various countries have, over the past decade and a half, deployed different strategies, and enjoyed different results. At the Commission's request, this study reviews the current plans and practices pursued by other countries in the transition to the next generation of connectivity, as well as their past experience. By observing the experiences of a range of market-oriented democracies that pursued a similar goal over a similar time period, we hope to learn from the successes and failures of others about what practices and policies best promote that goal. By reviewing current plans or policy efforts, we hope to learn what others see as challenges in the next generation transition, and to learn about the range of possible solutions to these challenges

    Methodology for designing PON networks

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    Cílem této práce je analyzovat současný stav přístupových optických sítí,a hlouběji prozkoumat PON metodiku a návrh sítě. Navrhnul jsem síť založenou na konceptu FTTH pro 90 rodinných domů ovládané z centrální stanice vzdálené 20 km. Zabýval jsem se problémy při návrhu FTTH, konkrétně pasivní optickou sítí. Dále jsem se zabýval ATM-PON a Ethernet PON (EPON), které jsou založeny na společné síťové architektuře, PON, ale používají jiné přenosové technologie na podporu integrovaných služeb a jiné protokoly. Po zadání (optimálního) síťového řešení, které se hodí pro nabídku Triple-Play služeb. Dále budu popisovat, jak fungují síťová propojení a také budou popsány metody měření a testování navržené sítě "po aktivaci a nastavení sítě" a "před aktivací síťových služeb ". Při měření jsem také používal OTDR a prakticky ověřil charakteristiku linky. V práci je také naznačeno monitorování optické sítě.The purpose of this thesis is to analyze the present condition of Access network, in depth research of PON Methodology and network design. I shall design a Network project based on FTTH for building a network of 90 private houses controlled by a central control point from 20km distance. Where I shall address these issues and expedite the introduction of FTTH, and I will reason behind (PON) network-based solution, and so on ATM-PON and Ethernet PON (EPON), which are based on common network architecture, PON, but adopt different transfer technologies to support integrated services and multiple protocols. After providing the (optimal) network solution that fits to fulfill Triple-Play requirements, I will describe how the network interconnects and how it functions and work, later on I shall go into describing the measuring methods and testing for the defined network “after activating and setting the network” and “before activating the network service” where I will also use the OTDR and practically apply a link characterization test. And suggest the monitoring of the design model of the project.

    Next Generation Connectivity: A Review of Broadband Internet Transitions and Policy from Around the World

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    Fostering the development of a ubiquitously networked society, connected over high-capacity networks, is a widely shared goal among both developed and developing countries. High capacity networks are seen as strategic infrastructure, intended to contribute to high and sustainable economic growth and to core aspects of human development.
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