57 research outputs found
ACUTA Journal of Telecommunications in Higher Education
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
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 clientsâ 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 usersâ 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 usersâ perceived Quality-of-Experience while optimizing load balancing decisions. The overall results show an improvement of usersâ
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 previsão 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
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
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
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
Today, information technology is strategically important to the goals and aspirations of the business enterprises, government and high-level education institutions â 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 universityâs 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: itâs open network architecture; itâs 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
Recommended from our members
Application priority framework for fixed mobile converged communication networks
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.The current prospects in wired and wireless access networks, it is becoming increasingly important to address potential convergence in order to offer integrated broadband services. These systems will need to offer higher data transmission capacities and long battery life, which is the catalyst for an everincreasing variety of air interface technologies targeting local area to wide area connectivity. Current integrated industrial networks do not offer application aware context delivery and enhanced services for optimised networks. Application aware services provide value-added functionality to business applications by capturing, integrating, and consolidating intelligence about users and their endpoint devices from various points in the network. This thesis mainly intends to resolve the issues related to ubiquitous application aware service, fair allocation of radio access, reduced energy consumption and improved capacity. A technique that measures and evaluates the data rate demand to reduce application response time and queuing delay for multi radio interfaces is proposed. The technique overcomes the challenges of network integration, requiring no user intervention, saving battery life and selecting the radio access connection for the application requested by the end user. This study is split in two parts. The first contribution identifies some constraints of the services towards the application layer in terms of e.g. data rate and signal strength. The objectives are achieved by application controlled handover (ACH) mechanism in order to maintain acceptable data rate for real-time application services. It also looks into the impact of the radio link on the application and identifies elements and parameters like wireless link quality and handover that will influence the application type. It also identifies some enhanced traditional mechanisms such as distance controlled multihop and mesh topology required in order to support energy efficient multimedia applications. The second contribution unfolds an intelligent application priority assignment mechanism (IAPAM) for medical applications using wireless sensor networks. IAPAM proposes and evaluates a technique based on prioritising multiple virtual queues for the critical nature of medical data to improve instant transmission. Various mobility patterns (directed, controlled and random waypoint) has been investigated and compared by simulating IAPAM enabled mobile BWSN. The following topics have been studied, modelled, simulated and discussed in this thesis: 1. Application Controlled Handover (ACH) for multi radios over fibre 2. Power Controlled Scheme for mesh multi radios over fibre using ACH 3. IAPAM for Biomedical Wireless Sensor Networks (BWSN) and impact of mobility over IAPAM enabled BWSN. Extensive simulation studies are performed to analyze and to evaluate the proposed techniques. Simulation results demonstrate significant improvements in multi radios over fibre performance in terms of application response delay and power consumption by upto 75% and 15 % respectively, reduction in traffic loss by upto 53% and reduction in delay for real time application by more than 25% in some cases
Journal of Telecommunications in Higher Education
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
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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