Public Policy Targets in EU Broadband Markets: The Role of Technological Neutrality

The European Commission has recently sought to substantially revise how it regulates the telecommunication industry, with a key goal being to incentivise investment in high-speed broadband networks. Ambitious goals to incentivise investment in high-speed broadband networks have been set across the European Union, initially in the "Digital Agenda for Europe" and more recently in its "Gigabit strategy". These goals reflect the view of many that there are widespread and significant socio-economic benefits associated with broadband. Our analysis explores the consequence of target setting at a European level, in terms of encouraging investment and picking which technology should be adopted within the context of technological neutrality. We demonstrate that while public policy targets might implicitly favour specific technologies, especially when gigabit targets are defined, the technological choices that occur within individual Member States are shaped by the complex and dynamic interaction between a series of path dependencies that may vary significantly across as well as within Member States. Adopting an ecosystem perspective, we propose a conceptual framework that identifies the key factors associated with technological neutrality and informs a rational decision-making process.Series: Working Papers / Research Institute for Regulatory Economic

Analog radio over fiber solutions for multi-band 5g systems

This study presents radio over fiber (RoF) solutions for the fifth-generation (5G) of wireless networks. After the state of the art and a technical background review, four main contributions are reported. The first one is proposing and investigating a RoF technique based on a dual-drive Mach-Zehnder modulator (DD-MZM) for multi-band mobile fronthauls, in which two radiofrequency (RF) signals in the predicted 5G bands individually feed an arm of the optical modulator. Experimental results demonstrate the approach enhances the RF interference mitigation and can prevail over traditional methods. The second contribution comprises the integration of a 5G transceiver, previously developed by our group, in a passive optical network (PON) using RoF technology and wavelength division multiplexing (WDM) overlay. The proposed architecture innovates by employing DD-MZM and enables to simultaneously transport baseband and 5G candidate RF signals in the same PON infrastructure. The proof-of-concept includes the transmission of a generalized frequency division multiplexing (GFDM) signal generated by the 5G transceiver in the 700 MHz band, a 26 GHz digitally modulated signal as a millimeter-waves 5G band, and a baseband signal from an gigabit PON (GPON). Experimental results demonstrate the 5G transceiver digital performance when using RoF technology for distributing the GFDM signal, as well as Gbit/s throughput at 26 GHz. The third contribution is the implementation of a flexible-waveform and multi-application fiber-wireless (FiWi) system toward 5G. Such system includes the FiWi transmission of the GFDM and filtered orthogonal frequency division multiplexing (F-OFDM) signals at 788 MHz, toward long-range cells for remote or rural mobile access, as well as the recently launched 5G NR standard in microwave and mm-waves, aiming enhanced mobile broadband indoor and outdoor applications. Digital signal processing (DSP) is used for selecting the waveform and linearizing the RoF link. Experimental results demonstrate the suitability of the proposed solution to address 5G scenarios and requirements, besides the applicability of using existent fiber-to-the-home (FTTH) networks from Internet service providers for implementing 5G systems. Finally, the fourth contribution is the implementation of a multi-band 5G NR system with photonic-assisted RF amplification (PAA). The approach takes advantage of a novel PAA technique, based on RoF technology and four-wave mixing effect, that allows straightforward integration to the transport networks. Experimental results demonstrate iv uniform and stable 15 dB wideband gain for Long Term Evolution (LTE) and three 5G signals, distributed in the frequency range from 780 MHz to 26 GHz and coexisting in the mobile fronthaul. The obtained digital performance has efficiently met the Third-Generation Partnership Project (3GPP) requirements, demonstrating the applicability of the proposed approach for using fiber-optic links to distribute and jointly amplify LTE and 5G signals in the optical domain.Agência 1Este trabalho apresenta soluções de rádio sobre fibra (RoF) para aplicações em redes sem fio de quinta geração (5G), e inclui quatro contribuições principais. A primeira delas refere-se à proposta e investigação de uma técnica de RoF baseada no modulador eletroóptico de braço duplo, dual-drive Mach-Zehnder (DD-MZM), para a transmissão simultânea de sinais de radiofrequência (RF) em bandas previstas para redes 5G. Resultados experimentais demonstram que o uso do DD-MZM favorece a ausência de interferência entre os sinais de RF transmitidos. A segunda contribuição trata da integração de um transceptor de RF, desenvolvido para aplicações 5G e apto a prover a forma de onda conhecida como generalized frequency division multiplexing (GFDM), em uma rede óptica passiva (PON) ao utilizar RoF e multiplexação por divisão de comprimento de onda (WDM). A arquitetura proposta permite transportar, na mesma infraestrutura de rede, sinais em banda base e de radiofrequência nas faixas do espectro candidatas para 5G. A prova de conceito inclui a distribuição conjunta de três tipos de sinais: um sinal GFDM na banda de 700 MHz, proveniente do transceptor desenvolvido; um sinal digital na frequência de 26 GHz, assumindo a faixa de ondas milimétricas; sinais em banda base provenientes de uma PON dedicada ao serviço de Internet. Resultados experimentais demonstram o desempenho do transceptor de RF ao utilizar a referida arquitetura para distribuir sinais GFDM, além de taxas de transmissão de dados da ordem de Gbit/s na faixa de 26 GHz. A terceira contribuição corresponde à implementação de um sistema fibra/rádio potencial para redes 5G, operando inclusive com o padrão ―5G New Radio (5G NR)‖ nas faixas de micro-ondas e ondas milimétricas. Tal sistema é capaz de prover macro células na banda de 700 MHz para aplicações de longo alcance e/ou rurais, utilizando sinais GFDM ou filtered orthogonal frequency division multiplexing (F-OFDM), assim como femto células na banda de 26 GHz, destinada a altas taxas de transmissão de dados para comunicações de curto alcance. Resultados experimentais demonstram a aplicabilidade da solução proposta para redes 5G, além da viabilidade de utilizar redes ópticas pertencentes a provedores de Internet para favorecer sistemas de nova geração. Por fim, a quarta contribuição trata da implementação de um sistema 5G NR multibanda, assistido por amplificação de RF no domínio óptico. Esse sistema faz uso de um novo método de amplificação, baseado no efeito não linear da mistura de quatro ondas, que vi permite integração direta em redes de transporte envolvendo rádio sobre fibra. Resultados experimentais demonstram ganho de RF igual a 15 dB em uma ampla faixa de frequências (700 MHz até 26 GHz), atendendo simultaneamente tecnologias de quarta e quinta geração. O desempenho digital obtido atendeu aos requisitos estabelecidos pela 3GPP (Third-Generation Partnership Project), indicando a aplicabilidade da solução em questão para distribuir e conjuntamente amplificar sinais de RF em enlaces de fibra óptica

Public policy targets in EU broadband markets: The role of technological neutrality

The European Commission has recently sought to substantially revise how it regulates the telecommunication industry, with a key goal being to incentivise investment in high-speed broadband networks. Ambitious goals to incentivise investment in high-speed broadband networks have been set across the European Union, initially in the ‘Digital Agenda for Europe’ and more recently in its ‘Gigabit strategy’. These goals reflect the view of many that there are widespread and significant socio-economic benefits associated with broadband. Our analysis explores the consequence of target setting at a European level, in terms of encouraging investment and picking which technology should be adopted within the context of technological neutrality. We demonstrate that while public policy targets might implicitly favour specific technologies, especially when gigabit targets are defined, the technological choices that occur within individual Member States are shaped by the complex and dynamic interaction between a series of path dependencies that may vary significantly across as well as within Member States. Adopting an ecosystem perspective, we propose a conceptual framework that identifies the key factors associated with technological neutrality and informs a rational decision-making process

Comparative Techno-Economic Evaluation of LTE Fixed Wireless Access and FTTdp G.fast network deployment for providing 30Mbps broadband services in rural areas

Στις αγροτικές περιοχές της Ευρώπης, η ανάπτυξη των δικτύων ευρυζωνικής πρόσβασης υψηλών ταχυτήτων υστερεί σε σχέση με τις αστικές και ημιαστικές περιοχές λόγω των δυσκολιών που υπάρχουν στην εγκατάσταση οπτικών ινών κοντά στα νοικοκυριά. Τα δίκτυα FTTdp βασισμένα στην τεχνολογία G.fast έχουν προταθεί ως μια οικονομικά αποδοτική εναλλακτική λύση έναντι των FTTH και FTTB, ιδίως στις αγροτικές περιοχές, όπου το FTTC και το VDSL δεν μπορούν πάντοτε να παρέχουν ταχύτητες 30Mbps, το οποίο είναι το ελάχιστο εύρος ζώνης που ορίζεται ως στόχος της European Digital Agenda που πρέπει να επιτευχθεί έως το 2020. Ωστόσο, τα δίκτυα fixed wireless access (FWA) που βασίζονται στην τεχνολογία LTE μπορούν να χρησιμοποιηθούν ως λύση «last mile» για την παροχή ευρυζωνικής πρόσβασης υψηλής ταχύτητας σε περιοχές όπου η πρόσβαση σε σταθερά ευρυζωνικά δίκτυα είναι περιορισμένη. Από την άλλη πλευρά, η τεχνολογία LTE προσφέρει συνδέσεις υψηλής ταχύτητας ικανές να υποστηρίξουν υπηρεσίες διαδικτύου και υπηρεσίες IP, ενώ μπορούν θεωρητικά να υποστηρίξουν μέχρι και 300Mbps ανάλογα με το φόρτο του δικτύου. Έτσι, μπορεί να θεωρηθεί ως μια πραγματική εναλλακτική λύση έναντι των σταθερών δικτύων. Σε αυτή την εργασία πραγματοποιήθηκε μια τεχνοοικονομική μελέτη για την αξιολόγηση της ανάπτυξης δικτύου FWA βασισμένης στην τεχνολογία LTE σε σύγκριση με την ανάπτυξη του δικτύου FTTdp G.fast για την παροχή ταχύτητας 30Mbps σε αγροτικές περιοχές. Θα παρουσιαστούν τα αποτελέσματα των ταμειακών ροών και συνήθων οικονομικών δεικτών για τα αντίστοιχα επιχειρηματικά σενάρια. Τα αποτελέσματα αξιολογούνται μέσω ανάλυσης ευαισθησίας και κινδύνου για τον προσδιορισμό των σημαντικότερων παραγόντων που επηρεάζουν την βιωσιμότητα της επένδυσης. Συζητάμε επίσης την κερδοφορία ή μη κερδοφορία και των δύο περιπτώσεων και την επιδότηση που απαιτείται. Τα αποτελέσματα έχουν στόχο να συμβάλουν στη συζήτηση για την εξέλιξη των δικτύων πρόσβασης μεταξύ των ακαδημαϊκών κύκλων, της βιομηχανίας, των ρυθμιστικών αρχών, των υπευθύνων χάραξης πολιτικής και των κυβερνήσεων.In rural areas in Europe, the deployment of High-Speed Broadband access networks lags behind in urban and suburban areas due to difficulties of deployment of fiber in the final meters. FTTdp networks using G.fast have been proposed as a cost-effective alternative to FTTH and FTTB especially in rural areas where FTTC and VDSL cannot always deliver service speeds of 30Mbps which is the minimum bandwidth defined in the European Digital Agenda as target to be met by 2020. However, fixed wireless access (FWA) networks based on LTE technology can be used as a “last mile” solution to provide high-speed broadband access to areas where fixed broadband is limited. On the other hand, LTE technology offers high speed connections able to support internet browsing and IP services, while it can theoretically support up to 300 Mbps depending on network load and sharing. Thus, it can be considered as a true alternative to any fixed solution. In this paper, a techno-economic study is performed to assess the feasibility of a FWA network deployment based on LTE technology in comparison to FTTdp G.fast network rollout for delivering service speeds of 30Mbps in rural areas. We present cash flow results and standard financial indexes for the business cases discussed. The results are being appraised through a sensitivity and risk analysis to determine the most influential factors on the return on the investment. We also discuss the (non) profitability of both cases and the subsidization needed from structural funds. The results aim to contribute in the debate over network evolution scenarios among academia, industry, regulators, policy makers and governments

Techno-Economic Assessment in Communications: New Challenges

This article shows a brief history of Techno-Economic Assessment (TEA) in Communications, a proposed redefinition of TEA as well as the new challenges derived from a dynamic context with cloud-native virtualized networks, the Helium Network & alike blockchain-based decentralized networks, the new network as a platform (NaaP) paradigm, carbon pricing, network sharing, and web3, metaverse and blockchain technologies. The authors formulate the research question and show the need to improve TEA models to integrate and manage all this increasing complexity. This paper also proposes the characteristics TEA models should have and their current degree of compliance for several use cases: 5G and beyond, software-defined wide area network (SD-WAN), secure access service edge (SASE), secure service edge (SSE), and cloud cybersecurity risk assessment. The authors also present TEA extensibility to request for proposals (RFP) processes and other industries, to conclude that there is an urgent need for agile and effective TEA in Comms that allows industrialization of agile decision-making for all market stakeholders to choose the optimal solution for any technology, scenario and use case.Comment: 18 pages, 1 figure, 2 table

Innovation-based competitive differentiation amongst South African fibre to the home (FTTH) operators

A research report submitted to the Wits Business School in the University of the Witwatersrand, in partial fulfilment of the requirements for the degree of Master of Management in the field of Innovation StudiesFibre-to-the-home (FTTH) as an access technology is viewed as vital for economic growth and competitiveness. The deployment of high speed networks and advanced access technologies is essential for continuous development of broadband in South Africa. FTTH is an access technology that has recently been deployed and adopted by different network providers in South Africa. South Africa is one of the developing countries attracting investments in the deployment of infrastructure where industry players are deploying fibre at a high rate with acquisition of smaller players. FTTH operators and service providers are challenged with competitive pressures within the market where competitiveness relies on the capacity to continually develop and implement unique innovative initiatives that will drive competitive advantage over its competitors. Competitive advantage is needed to achieve the organisation’s objectives. These innovative initiatives are required due to intense competition within the market which results in reduction of prices and margins. The purpose of this study is the exploration of innovation-based competitive differentiation from a South African FTTH provider perspective. The study aims to look at potential innovation differentiation amongst South African FTTH providers and how it can be applied in order to obtain a competitive advantage by looking at the factors that influence competitive advantage and barriers for innovation within the market. The study will provide knowledge and insights to develop an understanding of innovation for FTTH providers in a developing country such as South Africa. In this study, realistic data from the different network providers and service providers has been collected utilising a qualitative research method to investigate and conduct an in-depth analysis based on interviews with subject matter experts and managers from FTTH operators and service providers. Some propositions have been suggested as a validation for the proposed framework. The sample for the study has been drawn from the active FTTH network infrastructure operators and service providers based in Gauteng. The research findings indicate that the fibre-to-the-home market is a highly competitive environment with network providers and service providers offering various products and services to customers in order to meet customer needs. However, there are challenges with innovation based competitive differentiation since, currently, 3 competition is primarily based on the price of the broadband product. As a result, prices have been plummeting, leading to some service providers operating and selling their FTTH products with no margins or negative margins. KEYWORDS: Fibre-to-the-Home, FTTH, Innovation, Differentiation, Competition, Network Operators, Competitive Advantage.GR201

Contribution to energy consumption modelling and forecast in next generation access networks

La contribución del sector de las tecnologías de la información y las comunicaciones (TICs) al consumo de energía a nivel global se ha visto incrementada considerablemente en la última década al mismo tiempo que su relevancia dentro de la economía global. Se prevé que esta tendencia continúe debido al uso cada vez más intensivo de estas tecnologías. Una de las principales causas es el tráfico de datos de banda ancha generado por el uso de las redes de telecomunicaciones. De hecho como respuesta a esta demanda de recursos por parte de los usuarios, de la industria de las telecomunicaciones está iniciando el despliegue de las redes de nueva generación. En cualquier caso, el consumo de energía es un factor generalmente ausente del debate sobre el despliegue de estas tecnologías, a pesar de la posible repercusión que pueda llegar a tener en los costes y la sostenibilidad de estos proyectos. A lo largo de este trabajo se desarrollan modelos para evaluar el consumo energético de las redes de acceso de nueva generación (NGAN). Estos servirán tanto para llevar a cabo cálculos en un escenario global estático, como en cualquiera otro que determine la potencial evolución de la red de acceso a lo largo de su despliegue. Estos modelos combinan tres factores: la penetración prospectiva de cada una de las tecnologías de banda ancha analizadas, el tráfico generado por usuario y su futura evolución, y el perfil de consumo de energía de cada uno de los dispositivos de red desplegados. Tras evaluar los resultados derivados de la aplicación de los modelos en el caso demográfico específico de España, se obtienen conclusiones acerca de las diferencias tecnológicas en cuanto al consumo energético, sus implicaciones económicas, y la sensibilidad de los cálculos atendiendo a posibles modificaciones en los valores de referencia de diferentes parámetros de diseño. Se destaca por tanto el efecto en el consumo energético de los desarrollos tecnológicos, tecno-económicos, y de las decisiones en el ámbito regulatorio. Aunque como se ha dicho, se ha ejemplificado el cálculo para un caso particular, tanto los modelos como las conclusiones extraídas se pueden extrapolar a otros países similares