Maria Barros Weiss

IONOS SE

The new Fifth-Generation (5G) mobile networks entail next-generation network management solutions to manage both physical and virtual network infrastructures and services. The challenge is to effectively manage the increased complexity due to virtualization and softwarization, whilst attempting to reduce the operational costs for 5G operators. This...

Media use cases for emergency services require mission-critical levels of reliability for the delivery of media-rich services, such as video streaming. With the upcoming deployment of the fifth generation (5G) networks, a wide variety of applications and services with heterogeneous performance requirements are expected to be supported, and any migr...

This paper presents the design and prototype implementation of the SELFNET fifth‐generation (5G) mobile edge infrastructure. In line with the current and emerging 5G architectural principles, visions, and standards, the proposed infrastructure is established primarily based on a mobile edge computing paradigm. It leverages cloud computing, software...

5G network technologies are evolving in a tremendous pace, enhancing the potential for being adopted and exploited by vertical industries and serve advance networking requirements needs. Towards this direction, a set of 5G PPP projects are providing contributions for tackling aspects related to the overall lifecycle of 5G vertical applications desi...

Network slicing has emerged as a major new networking paradigm for meeting the diverse requirements of various vertical businesses in virtualised and softwarised 5G networks. SliceNet is a project of the EU 5G Infrastructure Public Private Partnership (5G PPP) and focuses on network slicing as a cornerstone technology in 5G networks, and addresses...

The 5G infrastructure initiative in Europe¹ 5G Infrastructure Public Private Partnership, [Online]. Available here: https://5g-ppp.eu/ has agreed a number of challenging key performance indicators (KPIs) to significantly enhance the user experience and support a number of use cases with very demanding requirements on the network infrastructure. At...

Nowadays, mobile networks are complex sets of heterogeneous equipments that use proprietary management applications, resulting in a huge expenditure, a large effort and a time-consuming process to manage all network elements by means of currently manual or semi-automatical approaches. With the emergency of new technologies, such software-defined ne...

Smart City services are becoming more prevalent. These services have the potential to improve the quality of life of citizens (e.g. detecting and managing pollution) and also to make better use of resources (i.e. water and energy). The European and South African contexts vary significantly thus necessitating either different services r significant...

Sharp increase of video traffic is expected to account for the majority of traffic in future 5G networks. This paper introduces the SELFNET 5G project and describes the video streaming use case that will be used to demonstrate the self-optimising capabilities of SELFNET’s autonomic network management framework. SELFNET’s framework will provide an a...

To meet the challenging key performance indicators of the fifth generation (5G) system, the network infrastructure becomes more heterogeneous and complex. This will bring a high pressure on the reduction of OPEX and the improvement of the user experience. Hence, shifting today’s manual and semi-automatic network management into an autonomic and...

Cities increasingly face challenges related to pollution, efficient use of resources (e.g. water, energy) and ensuring a good quality of life for its citizens. Solutions built on existing and emerging technologies such as Cloud computing, Internet of Things, Machine-to-Machine and data analytics can improve on or create services able to address the...

Recent Internet of Things (IoT) research has been aiming at interoperability of devices and the integration of sensor networks. The Future Internet – Private Public Partnership (FI-PPP) has created a whole array of different purpose-oriented modules with defined specifications, better known as Generic Enablers. This article gives an overview of leg...

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This paper presents a speech corpus for European Portuguese (EP), designed for context based text-to-speech (TTS) synthesis systems. It is a speech corpus intended for small footprint engines, composed by one sentence dedicated to each sequence of two phonemes of the language, incorporating as many language contexts as possible at diphone and word...

This paper presents the validation and evaluation process for AIM project. AIM project is developing an architecture to offer a harmonized technology for managing in real time the energy consumption of appliances at home, interworking this information to communication devices over the home network and virtualizing it with the final aim of making it...

In this paper, we present a set of optimizations for a spoken language interface for mobile devices that can improve the recognition accuracy and user interaction experience. A comparison between a speech and a graphical interface, when used to accomplish the same task, is provided. The implications of developing a spoken language interface and int...

In this paper a test proposal for European Portuguese (EP) synthetic speech quality evaluation as well as some of its applications are presented. For this purpose we have built a Semantically Unpredictable Sentences (SUS) corpus of 25 sentences with different lengths and varied syntactic characteristics that were chosen according to the standard EP...

The present paper describes the work done during the last year in the development of European Portuguese (EP) speech recognition and synthesis channels for an Internet e-commerce application. The objective of this work was to develop the appropriate speech input and output, to enable the user to more comfortably use an e-commerce web site issuing c...

Dissertação apresentada para obtenção do grau de Mestre em Engenharia Electrotécnica e de Computadores (Área de Especialização de Telecomunicações), na Faculdade de Engenharia da Universidade do Porto, sob a orientação do Professor Diamantino Rui da Silva Freitas

In this article a prosodic model for European Portuguese (henceforth EP) based on a linguistic approach is described. It was developed in the scope of the Antigona Project, an electronic-commerce system using a speech interface (Speech to Text plus Text To Speech, the latter based on a time concatenation technique) for EP language. The purpose of o...

In this paper we analyse and describe the phonetic behaviour of the non-tonic back closed vowel [u] in European Portuguese (EP) in what respects its quality and relative duration. Slow and faster speech were used. The objective of this work is to contribute with experimental results in order to obtain a more accurate comprehension of this vowel's p...

In this paper a labeled new speech signal database (FEUP/IPB- DB) in Standard European Portuguese (hereafter SEP) is presented. The objective of this work is, on one hand, to provide phonetic material for Text-to-Speech (TTS) systems construction, either from the start or to improve the quality of existing ones, and, on the other hand, to place at...

In this paper we studied the phonemic structure of the words' beginnings and endings in standard European Portuguese (hereafter EP). The generativist description of the Portuguese phonology [1] was used as framework basis and the phonetic and acoustic experiments performed by Delgado-Martins [2] served as a model to the phonetic background in EP. W...

The main purpose of this paper is to propose a Diagnostic Rhyme Test (DRT) for evaluating European Portuguese (EP) synthetic speech intelligibility. The DRT is nowadays one of the most common tests for subjective evaluation of speech systems" intelligibility. After a vast research, it seems that there is still not any DRT test for EP available. It...