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Broadband access technologies

Pereira, João Paulo; Pires, José Adriano
Fonte: Instituto Politécnico de Bragança Publicador: Instituto Politécnico de Bragança
Tipo: Conferência ou Objeto de Conferência
ENG
Relevância na Pesquisa
36.47%
Broadband technologies have view great growth over the past decade. But, the main part of this development and growth has been in the core networks, and the capacity of the access network to delivery broadband services remains as a challenge ("last mile problem"). The access network remains a bottleneck in terms of the bandwidth and service quality it affords the end user. By other side, the access network is much more spread geographically and covers larger areas. Then, this part of the network is usually the most expensive component in terms of capital investment and OAM cost. Some studies reefer that this networks required 70% of the total investment. Several access technologies can be used in this part of the network, which can be used to resolve the bandwidth bottleneck and the investment problem: xDSL, HFC, FTTx, FWA, WiMAX, PLC, Satellite, etc. This paper presents a methodology and a tool that compare and evaluate broadband access technologies. The paper presents a techno-economic analysis of eight broadband technologies for access networks: digital subscriber line (DSL), hybrid fiber coax (HFC), power line communications (PLC), fiber to the home (FTTH), fiber to the curb (FTTC), fiber to the cabinet (FTTCab)...

Recent improvements in the Broadband seismic networks in Portugal

Caldeira, B.; Carrilho, F.; Miranda, M.; Bezzeghoud, M.; Alves, I.; Silveira, G.; Villalonga, F.; Pena, J.A.
Fonte: EMSC Publicador: EMSC
Tipo: Artigo de Revista Científica
POR
Relevância na Pesquisa
46.39%
Portugal, in spite of the significant earthquake region, (e.g.: Borges et al., 2001) has been operating a limited number of broadband digital seismic instruments. The older BB seismic station in a systematic and continuous operation on the country is MTE, belonging to GEOFON and locally supported by IM, which is working since 1997. To efficiently carry out the task of develop the Broadband Portuguese seismic network, there is a collaboration between some national institutions, such as Institute of Meteorology (IM), Geophysics Center of Évora University (CGE/UE), Geophysics Center of University of Lisbon (CGUL/IGIDL) and Instituto Superior Técnico (IST), with governmental support from the National Science and Technology Foundation (Rede Nacional de Geofísica, RNG). From this collaboration we expect shortly to assist the emergence of a high quality infrastructure, significant to real-time monitoring the earthquake activity for use by governmental authorities, and of paramount importance to scientific research. The installation of this network is to be carried out in narrow connection with international institutions as GEOFON, EMSC, ROA, ORFEUS, with who we saw to establish collaborations. Data from some stations are already being exported to international data centers...

Proposta de uma rede de acesso banda larga sem fio rural padrão IEEE 802.16; Proposal for a communal rural wireless network broadband access in 802.16 standard

Leite, Abadio dos Reis Silva
Fonte: Universidade Federal de Uberlândia Publicador: Universidade Federal de Uberlândia
Tipo: Dissertação
POR
Relevância na Pesquisa
46.37%
Nos últimos anos, as tecnologias de redes de acesso banda larga sem fio com integração de dados, vídeo e voz estavam limitadas em relação à distância, QoS (Quality of Service) e largura de banda, principalmente em áreas desprovidas de infraestrutura e de difícil acesso, como o meio rural. O padrão IEEE 802.16 foi criado para prover conectividade em banda larga sem fio para usuários fixos e móveis em uma ampla área de cobertura com altas taxas de transferência de dados, procurando solucionar as barreiras encontradas nas tecnologias anteriores, permitindo taxas de transferência de dados de até 1 Gbps para usuários fixos e 100 Mbps para usuários móveis e QoS para as aplicações. Neste trabalho propõe-se uma rede de acesso banda larga sem fio rural padrão IEEE 802.16, destinada ao atendimento dos requisitos de comunicação de uma comunidade rural modelo. O planejamento desta rede de acesso permitiu definir uma comunidade rural que servirá de modelo para outras comunidades com características parecidas. O Site-Survey permitiu a coleta de dados e as informações necessárias para o dimensionamento de cobertura e capacidade para determinar a quantidade de BSs necessárias para cobrir a área especificada e o levantamento de demanda permitiu determinar a quantidade de SSs. Em função das SSs apontadas...

Convergence in Information and Communication Technology : Strategic and Regulatory Considerations

Singh, Rajendra; Raja, Siddhartha
Fonte: World Bank Publicador: World Bank
Relevância na Pesquisa
36.57%
This book is a compilation of two recently completed works on the convergence of information and communication technology (ICT) (Singh and Raja 2008, 2009). Since then, convergence, the eroding of boundaries among previously separate ICT services, networks, and business practices, has accelerated and deepened. At the time these reports were written, convergence was already a reality and was picking up pace in low-income countries, as in the rest of the world. Now, as this introduction summarizes, broadband networks are reaching deeper into previously unserved areas. The growing number of people connected to broadband networks are consuming, sharing, and creating new multimedia content and applications. And they are doing this on handheld and portable devices that are less costly and do more than before. All sorts of users, governments, businesses, individuals, and ICT firms, are looking to cut costs while capturing greater value. Taken together, these trends indicate that convergence is set to accelerate even through the ongoing global economic downturn. Countries that enable convergence through appropriate policy and regulatory responses will realize significant benefits in terms of expanded access...

Broadband for Africa : Developing Backbone Communications Networks

Williams, Mark D. J.
Fonte: World Bank Publicador: World Bank
Relevância na Pesquisa
46.58%
Many countries in Sub-Saharan Africa see information and communication technology (ICT) as a necessary foundation for long-term economic development. While the region has been very successful in increasing access to basic voice communications, there has been no comparable improvement in broadband connectivity. In fact, the broadband access gap between Sub-Saharan Africa and the rest of the world is getting wider just as the gap in basic voice communications is getting smaller. Increasing access to broadband connectivity is therefore emerging as a high priority for policy makers across the continent. This book begins with a brief review of the ICT market and considers the extent of demand for broadband and the ICT services that high-capacity backbone networks make possible. This is followed by a review of the existing coverage of backbone networks in the region, a discussion of how this compares with other parts of the world, and an analysis of the possible explanations for the current pattern of network development. Finally...

Building Broadband : Strategies and Policies for the Developing World

Kim, Yongsoo; Kelly, Tim; Raja, Siddhartha
Fonte: World Bank Publicador: World Bank
Relevância na Pesquisa
46.62%
This book suggests an ecosystem approach to broadband policy that could help in the design of strategies, policies, and programs that support network expansion, have the potential to transform economies, improve the quality and range of services, enable application development, and broaden adoption among users. To identify emerging best practices to nurture this ecosystem, this volume analyzes the Republic of Korea and other leading broadband markets. It identifies three building blocks to support the growth of the broadband ecosystem: defining visionary but flexible strategies, using competition to promote market growth, and facilitating demand. An important but often neglected building block is demand facilitation. This includes raising awareness about the benefits of broadband and improving affordability and accessibility for the largest number of users. Successful countries have often focused on creating a suite of useful applications that increase the relevance of broadband to the widest base of users. Programs to mainstream information and communication technology (ICT) use in education...

Options to Increase Access to Telecommunications Services in Rural and Low-Income Areas

Muente-Kunigami, Arturo; Navas-Sabater, Juan
Fonte: World Bank Publicador: World Bank
Relevância na Pesquisa
36.49%
Recent evidence suggests that increasing overall service coverage and promoting access to telecommunications services have a high economic benefit. Overall, it is estimated that a ten percent increase in mobile telephony penetration could increase economic growth by 0.81 percent in developing countries, whereas a ten percent increase in broadband penetration could increase economic growth by 1.4 percent. In rural and low-income areas in particular, not only do basic telephony services and broadband access allow population to connect with relatives and friends, but they have also introduced a dramatic increase in productivity and in many cases have become the only way for small and medium enterprises in rural areas to access national and, in some cases, global markets. Moreover, the impact of access to telecommunications in rural areas on health, education, disaster management, and local governments has allowed better and more rapid responses, improved coordination, and more effective public management. It is therefore worthwhile to take a second look at all possible policy options...

Internet Access : Regulatory Levers for a Knowledge Economy

Mustafa, Mohammad A.
Fonte: World Bank, Washington, DC Publicador: World Bank, Washington, DC
Relevância na Pesquisa
36.41%
Internet access depends on four critical players: First, providers of telecommunications infrastructure (bandwidth capacity) for international access to the global Internet backbone. Second, providers of national long-distance telecommunications transmission capacity (such as leased lines) to connect Internet service providers (ISPs) with one another and with international connectivity nodes. Third, providers of local loop access (narrowband and analogue, such as traditional copper wire connections, or broadband and digital, such as digital subscriber lines [DSL], cable television modems, and fixed wireless service). Fourth, ISPs, which provide Internet services to customers using these layers of networks. Expanding Internet access requires cooperative behavior by these players, and regulators have a key role in ensuring such behavior. A regulatory strategy for doing so focuses on promoting the telecommunications infrastructure, enabling viable ISPs, ensuring efficient pricing, maintaining appropriate service quality...

Broadband Wireless Access in Egypt

World Bank
Fonte: Washington, DC Publicador: Washington, DC
EN_US
Relevância na Pesquisa
36.53%
This paper discusses current and future developments in wireless technology and infastructure in Egypt. One of the important regulatory decisions made in Egypt is that policy related to broadband wireless will be technology neutral. Consequently, the regulator cannot decide about which operators should use specific technologies. This approach is beneficial for the overall development of the market and deployment of networks because: It allows operators and service providers to decide on which technology or mix of technologies is best for given service and market requirements, budget outlays, and deployment scenarios. Such an approach promotes technical and economic efficiency since each service providerwill attempt to maximize revenues and their subscriber base. The flexibility allows the regulator to ensure that the market can deploy the latest technology with the least regulatory overhead. Allowing only one technology into the market place will restrict the range of choices available to consumers.

Socio-Economic Assessment of Broadband Development in Egypt

World Bank
Fonte: Washington, DC Publicador: Washington, DC
EN_US
Relevância na Pesquisa
46.64%
The Government of Egypt has recognized broadband as being of strategic importance to the country´s economic and social development and it is developing a new strategy to develop access and use of broadband networks and services. As a specific target of this strategy, the government seeks to increase broadband penetration to 20 connections per 100 inhabitants by 2013. This report is the result of the second part of the existing reimbursable technical assistance on communications by which the World Bank has been providing assistance to the government of Egypt in the development of this broadband strategy. The objective of this particular assignment is to support the policy making process to develop broadband services and infrastructure throughout Egypt and achieve substantial economic impact in the economy including specific intermediary sectors. This assignment builds of the outcomes of the previously delivered study (strategic options for broadband development, 2010) and it uses both qualitative and quantitative approaches to provide specific advisory outputs.

A Sector Assessment : Accelerating Growth of High-Speed Internet Services in Azerbaijan

World Bank
Fonte: Washington, DC Publicador: Washington, DC
EN_US
Relevância na Pesquisa
36.56%
Azerbaijan s development at the beginning of the XXI century is characterized by the great success story of its petroleum industry, which has propelled Azerbaijan to the level of the most rapidly growing economies in Europe and Central Asia. While oil and gas reserves are finite and their extraction and transportation is largely impacted by exogenous factors the Government of Azerbaijan has recently focused its policies on economic diversification, which, among others, prioritizes public investment spending to boost the information and communication technologies (ICT) sector. It is envisaged that by 2020 Azerbaijan s ICT sector should become one of the main contributors to the non-oil GDP and should facilitate country s transition into the knowledge economy. Telecommunications liberalization, modernization and extension of the national telecom infrastructure, implementation of e-government, and other sector-specific policies have helped stimulate the growth of the local ICT sector which since 2005 has been expanding at an average rate of 25-30 percent. The telecom industry...

Broadband in Russia

Rossotto, Carlo Maria; Gelvanovska, Natalija; Hohlov, Yuri; Maciule, Vaiva; Shaposhnik, Sergei
Fonte: World Bank, Washington, DC Publicador: World Bank, Washington, DC
Tipo: Trabalho em Andamento
EN_US
Relevância na Pesquisa
46.62%
It is widely recognized that broadband is of fundamental importance to the social and economic development of a nation. The focus of the paper is on infrastructure-related actions; measures to stimulate demand for broadband are, therefore, only marginally addressed. This paper aims to provide a platform for debate with the Russian counterparts in the sector, and to discuss the measures needed to develop broadband in support of actions aimed at economic growth. This paper examines the broadband market in Russia and preconditions for its sustainable development. It begins by presenting arguments demonstrating the importance of broadband to the overall economic development of Russia, including from the perspective of diversification of the economy and new job creation. The paper benchmarks Russia s broadband performance with Organization of Economic Cooperation and Development (OECD) comparators, as well as with other nations leading the way in broadband diffusion. The paper takes stock of the existing broadband market structure in Russia and its main players as they stand today...

ACSys/RDN experiences with Telstra’s experimental broadband network, first progress report

Wilson, M; Taylor, Samuel; Rezny, M; Buchhorn, Markus; Wendelborn, A.L
Fonte: Universidade Nacional da Austrália Publicador: Universidade Nacional da Austrália
Tipo: Working/Technical Paper Formato: 92704 bytes; 356 bytes; application/pdf; application/octet-stream
EN_AU
Relevância na Pesquisa
56.17%
This report summarises our experiences with the EBN and provides an indication of where we are now. We don’t present a set of detailed performance measurements in this report, instead we focus primarily on bandwidth utilisation and network management. We are currently producing a more comprehensive set of performance measurements, which will be presented in a subsequent report.; no

Bottom-up cost modelling for bitstream services in broadband access networks

Hackbarth Planeta, Klaus Dietrich; Kulenkampff, Gabriele; Menéndez González, Alexia; Rodríguez de Lope López, Laura
Fonte: World Scientific and Engineering Academy and Society (WSEAS) Publicador: World Scientific and Engineering Academy and Society (WSEAS)
Tipo: info:eu-repo/semantics/conferenceObject; publishedVersion
ENG
Relevância na Pesquisa
46.35%
This contribution provides a definition of Bitstream Access Services and shows its importance inside the European Regulation. For this purpose a traffic model for the bitstream services is developed and a network structure for the corresponding broadband access network is determined. Additionally the contribution provides a model for a cost optimal Network planning and dimensioning and indicates a corresponding tool implementation. The cost model to be applied is exposed and applied to a network example. Additionally some problems arising for QoS differentiation in providing bitstream access services are shown and a first approach is indicated.

Achieving last-mile broadband access with passive optical networking technology

Schwartz, Jason L.
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Tese de Doutorado Formato: viii, 91 p. : ill. (some col.) ;
Relevância na Pesquisa
36.39%
Approved for public release; distribution is unlimited.; One of the primary challenges in today's computer networking world is providing enough bandwidth to achieve true broadband access in the local, or last-mile, access network. Over the course of the last decade or so, there has been a tremendous increase in the bandwidth of the core network in the U.S. In fact, a substantial portion of this core network, which primarily consists of fiber optic technology, is unused. This is primarily due to the lack of bandwidth in the last-mile access network. The last-mile access network of today primarily consists of technologies (e.g. digital subscriber line and cable modem access) that rely on infrastructures designed to carry voice and cable television signals. As a result, consumers are not able to enjoy true broadband services. This thesis discusses and analyzes the use of passive optical networking (PON) technology as possibly the best solution to today's last-mile bottleneck. General PON technology concepts and details concerning the two primary PON technologies, asynchronous transfer mode (ATM) PONs and Ethernet PONs, are discussed. The application of PON technology in achieving fiber to the home, using both PON-only and PON-hybrid infrastructures...

Compare affordability, capability and availability of broadband services between Australia and Canada and evaluate how these demand factors, government initiatives and regulation determine broadband deployment

Lowe, Arianwyn
Fonte: Universidade Nacional da Austrália Publicador: Universidade Nacional da Austrália
Tipo: Relatório
Relevância na Pesquisa
36.34%
Broadband is seen as a key driver of future national productivity however Australia is ranked 19th out of the 23 OECD countries for broadband take-up. In contrast, Canada has a strong broadband penetration rate of approximately 40%. The two countries have the same legal, economic and telecommunications frameworks, and contain relatively small populations within vast expanses of land and yet the positioning of the Canadian information economy is by far superior. This report asserts that Australia's pricing of broadband services is relatively expensive when compared to Canadian prices for equivalent services however there is no significant price differential associated with dial-up fees between the two countries. Broadband service contracts drawn up by Australian ISPs include monthly charges which often exceed the $60 mark and are full of restricting additional fees. These packages are no match for Canadian firms' enticing low-entry monthly charges of approximately $AUD27.15. Broadband services allow faster, dedicated connections which do not interfere with the phone line. However, customers need a more compelling benefit then a new, better way of doing things to persuade them to pay twice as much as dial-up services. A 'killer application' which is indispensable to many consumers and exclusive to broadband is required to boost demand. Research in the field of broadband content should be encouraged and content producers...

Telecommunications Regulation Handbook : Tenth Anniversary Edition

Blackman, Colin; Srivastava, Lara
Fonte: World Bank and the International Telecommunication Union, Washington, DC Publicador: World Bank and the International Telecommunication Union, Washington, DC
Tipo: Publications & Research :: Working Paper; Publications & Research
EN_US
Relevância na Pesquisa
36.47%
Communications are an essential means for reaching the, bottom of the Pyramid, and enabling individuals to reduce poverty and improve the quality of their lives. We currently live in a world in which more Africans have access to a mobile phone than to any other utility or infrastructure service. This widespread technological dissemination creates new opportunities across all segments of society, but also presents new challenges requiring adaptable strategies. Today's communications landscape is vastly different from the environment in which we developed the first telecommunications regulation handbook ten years ago. Competitive and open communications markets have created opportunities in countries that previously lagged behind. Competitively priced and technologically varied service offerings have allowed businesses to compete and thrive globally. However, there are still serious market gaps (such as providing widespread high speed broadband services at affordable prices and connectivity to remote areas), that, when coupled with evolving and converging technologies, pose challenges to policymakers and regulators. This new edition of the telecommunications regulation handbook captures the new market and regulatory strategies to optimize investment in broadband networks and Information and Communication Technology...

The Public Safety Broadband Network: A Novel Architecture with Mobile Base Stations

Chen, Xu; Guo, Dongning; Grosspietsch, John
Fonte: Universidade Cornell Publicador: Universidade Cornell
Tipo: Artigo de Revista Científica
Publicado em 18/03/2013
Relevância na Pesquisa
46.38%
A nationwide interoperable public safety broadband network is being planned by the United States government. The network will be based on long term evolution (LTE) standards and use recently designated spectrum in the 700 MHz band. The public safety network has different objectives and traffic patterns than commercial wireless networks. In particular, the public safety network puts more emphasis on coverage, reliability and latency in the worst case scenario. Moreover, the routine public safety traffic is relatively light, whereas when a major incident occurs, the traffic demand at the incident scene can be significantly heavier than that in a commercial network. Hence it is prohibitively costly to build the public safety network using conventional cellular network architecture consisting of an infrastructure of stationary base transceiver stations. A novel architecture is proposed in this paper for the public safety broadband network. The architecture deploys stationary base stations sparsely to serve light routine traffic and dispatches mobile base stations to incident scenes along with public safety personnel to support heavy traffic. The analysis shows that the proposed architecture can potentially offer more than 75% reduction in terms of the total number of base stations needed.; Comment: ICC 2013

Social Network Theory, Broadband and the World Wide Web

Sgroi, Daniel
Fonte: Universidade de Cambridge Publicador: Universidade de Cambridge
Formato: 352447 bytes; application/pdf; application/pdf
EN_GB
Relevância na Pesquisa
36.35%
This paper aims to predict some possible futures for the World Wide Web based on several key network parameters: size, complexity, cost and increasing connection speed thorough the uptake of broadband technology. This is done through the production of a taxonomy specifically evaluating the stability properties of the fully-connected star and complete networks, based on the Jackson and Wolinsky (1996) connections model modified to incorporate complexity concerns. We find that when connection speeds are low neither the star nor complete networks are stable, and when connection speeds are high the star network is usually stable, while the complete network is never stable. For intermediate speed levels much depends upon the other parameters. Under plausible assumptions about the future, we find that the Web may be increasingly dominated by a single intermediate site, perhaps best described as a search engine.

Incorporation of broadband access technology in a telecommunications engineering technology program

Koontz, Warren; Glenn, Chance; Indelicato, Mark
Fonte: American Society for Engineering Education Publicador: American Society for Engineering Education
Tipo: Proceedings
EN_US
Relevância na Pesquisa
36.35%
The so-called “last mile” of the telecommunications network, which links residences and business locations to the network, has traditionally been the last bastion of old technology. Residential voice service is still mostly provided via an analog signal over a pair of copper wires that connects the telephone to a switching system in a central office. The high-speed digital technology employed by modern switching systems and inter-office transmission systems does not extend to most residences. The local access network is a landscape of copper wires bound into large cables, splices, cross-boxes and other equipment that has provided voice-grade service over the years. However, the landscape is changing dramatically as both residential and business customers demand more and more bandwidth for a growing number of services including high-speed Internet access and video as well as voice. Telcos such as AT&T and Verizon as well as Multi-Service Operators (MSOs) are both vying to provide the “triple play” (voice, data and video) to these customers. In order to provide the triple play, service providers are introducing digital transmission and optical fiber, which have revolutionized long-haul communication, to the local access network. The Telecommunication Engineering Technology program at RIT is responding to this trend by providing courses and laboratory facilities to introduce students to the associated technology. Our Telecommunication Systems Laboratory now features both passive optical network (PON) and hybrid fiber/coax (HFC) technology. These are two leading approaches to provide broadband access to support the triple play. In addition...