Pedro Neves

Pedro Neves
PT Inovação · Centro para a Tecnologia Educacional (CTE)

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80
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810
Citations

Publications

Publications (80)
Conference Paper
This paper reports part of the ongoing work being carried out in the scope of the SliceNet project, a vertical business-driven H2020 project in which 5G technologies and services are being developed with the specific goal of serving a heterogeneous set of vertical applications. Efacec and Altice Labs are contributing with a vertical business use ca...
Article
Background and Aims Cardiovascular disease (CVD) is the most life-threatening complication in chronic kidney disease (CKD) patients. In addition to traditional risk factors, most patients with CKD display abnormal mineral metabolism with underlying hormonal dysregulation, defined as chronic kidney disease-mineral and bone disorder (CKD-MBD). CKD-MB...
Article
Full-text available
Introduction: Renal replacement therapy has not always been shown to benefit end-stage renal failure patients who are elderly or have multiple comorbidities. The Charlson Comorbidity Index (CCI) predicts mortality and is frequently used for risk stratification in clinical practice. We evaluated correlation between the Charlson Comorbidity Index and...
Conference Paper
Full-text available
Provisioning of network slices with appropriate Quality of Experience (QoE) guarantees is one of the key enablers for 5G networks. However, it poses several challenges in the slice management that need to be addressed to achieve an efficient end-to-end (E2E) services delivery. These challenges, among others, include the estimation of QoE Key Perfor...
Article
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...
Article
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...
Conference Paper
Full-text available
With the Fifth-Generation (5G) mobile networks set to arrive within the next years, this new generation will transform the industry with a profound impact on its customers as well as on the existing technologies and network architectures. Software-Defined Networking (SDN) and Network Functions Virtualization (NFV) will play key roles for the networ...
Conference Paper
Full-text available
This paper reports the design of a complex use case oriented to manage self-organizing capabilities in 5G networks, tailored to be the main scenario during the final execution stage of the H2020 SELFNET project. The use case is devoted to demonstrating that the SELFNET framework is capable of monitoring large volumes of information from multiple an...
Conference Paper
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...
Conference Paper
Full-text available
The next-generation 5G mobile networks are expected to bring a major shift on the management paradigm based on Network Function Virtualization (NFV) and Software-Defined Networking (SDN) compared with its precursor, 4G. Consequently, operators need to significantly change their network architectures, management mechanisms and business models to acc...
Conference Paper
Full-text available
5G networks are envisioned to support substantially more users than the current 4G does as a direct consequence of the anticipated large diffusion of Machine-2-Machine (M2M) and Internet of Things (IoT) interconnected devices, often with significantly higher committed data rates than general bandwidth currently available into Long Term Evolution (L...
Article
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...
Article
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...
Article
Full-text available
Abstract. The advent of Cloud Computing opened new opportunities in several areas, namely in the application development processes. As consequence, nowadays, PaaS (Platform-as-a-Service) service model allows simpler and flexible deployment strategies of applications, avoiding the need for dedicated networks, servers, storage, and other services. Wi...
Conference Paper
Cloud computing is a promising solution for the flexible, on-demand delivery of communication services and infrastructures. The European Union funded project Mobile Cloud Networking is developing a cloud-based mobile communication service platform where service providers deliver virtualized wireless infrastructures integrated with high-level applic...
Article
Full-text available
A new era in telecommunications is emerging. Virtualized networking functions and resources will offer network operators a way to shift the balance of expenditure from capital to operational, opening up networks to new and innovative services. This article introduces the concept of edge as a service (EaaS), a means of harnessing the flexibility of...
Article
The oxo-bridged dinuclear complex [Mo2O4(mu(2)-O)Cl-2(pypzEA)(2)] (2) (pypzEA = ethyl[3-(pyridin-2-yl)-1H-pyrazol-1-yl]acetate) was obtained upon the treatment of [MoO2Cl2(pypzEA)] (1) with ethanol. The molecular structure of 2 consists of two highly distorted {MoClN2O3} octahedra sharing a corner oxygen atom, with a Mo - O -Mo "kink" angle of 163....
Chapter
Cloud Computing has emerged as a new paradigm for services delivering over the Internet. In this growing market, PaaS (Platform-as-a-Service) service model has been the subject of great interest from several organizations allowing a straightforward deployment of applications without the need for a dedicated infrastructure, dependencies installation...
Conference Paper
The fast growing of mobile Internet users with the ability of using a wide diversity of access technologies such as Wi-Fi, WiMAX and UMTS/LTE, and the increasing proliferation of mobile devices with heterogeneous network interfaces, require versatile mobility mechanisms providing seamless roaming across those access technologies. Mobility agents su...
Article
The reaction of [MoO(2)Cl(2)(pypzEA)] (1) (pypzEA = ethyl[3-(pyridin-2-yl)-1H-pyrazol-1-yl]acetate) with water in a Teflon-lined stainless steel autoclave (100 °C) or in an open reflux system leads to the isolation of the molybdenum oxide/pyrazolylpyridine composite material [Mo(2)O(6)(HpypzA)] (2; HpypzA = [3-(pyridinium-2-yl)-1H-pyrazol-1-yl]acet...
Conference Paper
This paper describes a co-simulation implementation of ns-2 and SPHERE. These simulators complement each other by providing support for a group of layers of the OSI communication model. In particular, the SPHERE simulator is responsible for the simulation of lower layers (link layer and physical layer), while the ns-2 simulator provides support for...
Conference Paper
Full-text available
The main motivation of IMT-Advanced is to enable the mobile users with capacity to handle high data rates and low delay services such as high quality video and online gaming. Two technologies are competing in this field: LTE-Advanced and Mobile WiMAX. Following the Always Best Connected (ABC) paradigm, the integration of these two technologies with...
Conference Paper
Nowadays it's common to find the same place covered by multiple access networks. For that reason, mobile terminals are normally equipped with multiple network interfaces, which allow users to take advantage of the heterogeneity of those networks. This paper presents an architecture capable of using, in a simultaneous way, the multiple network inter...
Article
Full-text available
The fast growing of mobile Internet users with the ability of using a wide diversity of access technologies such as Wi-Fi, WiMAX and UMTS/LTE, and the increasing proliferation of mobile devices with heterogeneous network interfaces, require versatile mobility mechanisms providing seamless roaming across those access technologies. Mobility agents su...
Conference Paper
Full-text available
Video is a major challenge for the future mobile Internet as it is foreseen to account for close to 64% percent of consumer mobile traffic by 2013. However, the current Internet, and in particular the mobile Internet, was not designed with video requirements in mind and, as a consequence, its architecture is very inefficient when handling this type...
Conference Paper
With the large number of access technologies and the emergence of user mobility, the need to "access the world", anywhere and anytime has gained a significant importance. It is essential to ensure the quality of the services when moving between access networks and technologies in a transparent manner. This paper presents a new architecture that ena...
Article
The proliferation of the Internet and wireless access technologies introduced the constant mobile paradigm, in which users want to be always connected making use of the best available networks and technologies. In order to provide seamless connectivity among the new wireless access technologies, such as Wi-Fi, WiMAX and 3GPP (UMTS, HSPA and/or LTE)...
Article
Telecommunication suppliers predict a huge mobile Internet traffic increase for the next decade. It seems to be technically challenging and expensive to adapt current mobile network architectures to the increasing traffic demand. Core network technology must scale to the demands under limited revenue growth. This work is to discuss a new, flat, ful...
Conference Paper
The growth of available broadband access technolo- gies has brought an enormous challenge for operators wanting to ensure seamless mobility to its customers in heterogeneous environments. In this paper we present an enhanced Mobility Management entity focused on a real heterogeneous environments and based on IEEE802.21 standard. This entity is capa...
Article
The tetracarbonyl complexes cis-[Mo(CO)4{2-[3(5)-pyrazolyl]pyridine}] (1) and cis-[Mo(CO)4{ethyl[3-(2-pyridyl)-1-pyrazolyl]acetate}] (2) were obtained in excellent yields by microwave-assisted heating of a mixture of Mo(CO)6 and the organic ligand in toluene at 110°C for 30min. Complexes 1 and 2 are air stable, storable catalyst precursors for the...
Article
The IEEE 802.16 family of wireless local and metropolitan area network (LAN/MAN) standards has received plenty of attention in recent years due to its potential to change the field of telecommunications operations. WiMAX, which is based on IEEE 802.16 and a network reference architecture defined by the WiMAX Forum, emerges as a potent proposal for...
Article
In recent years a plethora of wireless technologies has become available. Users may efficiently utilize heterogeneous network infrastructures while moving among different access networks in order to attain better services, everywhere and at any time, following the always best connected concept. In this article enhanced handover functionality is des...
Article
Full-text available
The Ultra Flat Architecture is a new concept of fixed mobile convergent networks that aims to scale well with the mobile internet traffic explosion prognosticated for the next 5–10 years. This paper investigates the adequacy of three different sig-naling protocol alternatives for the Ultra Flat Architecture based on operator requirements. The appli...
Chapter
Although WiMAX, based on the IEEE 802.16 family of standards, has emerged as one of the major candidates for next generation networks, it is also clear that in the near future, the combination of several technologies will be required. In this sense, the support of mobility in heterogeneous environments, addressing broadband wireless, is one of the...
Conference Paper
The proliferation of the Internet and wireless access technologies introduced the constant mobile paradigm, where users want to be always connected making use of the best available networks and technologies. Although the IEEE 802.21 framework is able to improve the handover process independent from the access technology, it only supports an informa...
Chapter
Full-text available
In this chapter we presented an enhancement for the NS2-NIST/WiMAX model in order to efficiently support QoS. Specifically, a packet classification mechanism and the associated scheduler, based on priority RR (PRR), have been designed, implemented and tested. Through the performance evaluation measurements with different topologies, point-topoint (...
Conference Paper
A new plethora of wireless access technologies and services are emerging, driving the Internet access paradigm to a different stage. In order to provide seamless connectivity among the new wireless access technologies, such as Wi-Fi, WiMAX and UMTS, the IEEE 802.21 standard has defined the media independent handover framework. This paper presents a...
Article
The IEEE 802.16 family of wireless local and metropolitan area network (LAN/MAN) standards has received plenty of attention in recent years due to its potential to change the field of telecommunications operations. WiMAX, which is based on IEEE 802.16 and a network reference architecture defined by the WiMAX Forum, emerges as a potent proposal for...
Conference Paper
The fast growing of mobile Internet users with the ability of using a wide diversity of access technologies such as Wi-Fi, WiMAX and UMTS/LTE, and the increasing proliferation of mobile devices with heterogeneous network interfaces, require versatile mobility mechanisms providing seamless roaming across those access technologies. Mobility agents su...
Conference Paper
Although IEEE 802.16 has emerged as one of the major candidates for next generation networks, it is also clear that in the near future the combination of several technologies will be required. In this sense, the support of mobility in heterogeneous environments, addressing broadband wireless, is one of the main requirements in next generation netwo...
Conference Paper
Full-text available
The anticipated deployment of IEEE 802.16-based wireless metropolitan area networks (WMANs) will usher a new era in broadband wireless communications. The adoption of the WiMAX technology for remote areas, for example, can address challenging scenarios in a cost-effective manner. While WiMAX Forum documents describe an architecture that inherently...
Article
Full-text available
The Internet access paradigm is changing and a wide range of overlapping radio access technologies, such as WiMAX, Wi-Fi, 3GPP UMTS/LTE and DVB-H, will soon be available to most users and their multi-access devices. Therefore, novel mechanisms and protocols are needed to provide seamless mobility between different wireless access technologies. This...
Chapter
IntroductionWMAN Network ProviderTelemedicine ApplicationsEnvironmental MonitoringConclusions References
Chapter
IntroductionIEEE 802.16 Reference ModelCross-layer Design for WiMAX NetworksWEIRD: A Practical Case of WiMAX Cross-layer DesignWEIRD Framework Performance EvaluationSummaryReferences
Conference Paper
WiMAX is emerging as a broadband wireless access technology to satisfy end user expectations, containing a new set of advantages in terms of throughput, coverage and QoS support at the MAC level which allows convergence of several different types of applications and services. For that reason, the allocation of resources or scheduling becomes of gre...
Conference Paper
Full-text available
The Internet access paradigm is changing and a wide range of overlapping radio access technologies, such as WiMAX, Wi-Fi, 3GPP UMTS/LTE and DVB-H, will soon be available to most users and their multi-access devices. Therefore, novel mechanisms and protocols are needed to provide seamless mobility between different wireless access technologies. This...
Article
Today's Internet access technologies are not able to provide broadband connectivity to all areas in a cost-effective way for telecom operators. Wired technologies still require a noteworthy investment in cabling infrastructures, whereas wireless access technologies cannot deliver high-speed connections to several users simultaneously. To address th...
Article
Full-text available
1 — Broadband Wireless Access technologies are expected to play a central role in next generation networks. WiMAX, based on the IEEE 802.16 standard, has the potential to form the foundation upon which operators will deliver ubiquitous Internet access in the near future. It is also widely anticipated that the next generation wireless networks will...
Conference Paper
Ubiquitous broadband Internet access is an important requirement to satisfy user demands and support a new set of real time services and applications. WiMAX, a broadband wireless access solution for wireless metropolitan area networks, covering large distances with high throughputs, is a promising technology for next generation networks. Neverthele...
Conference Paper
Full-text available
In this paper, a novel solution to dynamically control the resources of a WiMAX system is proposed. The presented solution is aligned with the NGN trends, as well as with the WiMAX Forum guidelines and architecture. The interaction with the WiMAX systems is performed through SNMP, supporting the standardized IEEE 802.16 f MIB. Furthermore, the pape...
Conference Paper
Full-text available
Ubiquitous broadband Internet access is an important requirement to satisfy user demands and support a new set of real time services and applications. IEEE 802.16, as a broadband wireless access technology, can significantly contribute in this area. It is able to provide high throughput over large distances, with intrinsic QoS support, in line-of-S...
Chapter
IntroductionNovel Application Scenarios for WiMAXKey TechnologiesSystem ArchitectureValidating Results: Four European TestbedsConclusion References
Conference Paper
Full-text available
IEEE 802.16/WiMAX is one of the most promising technologies for broadband wireless access, both for fixed and mobile use. This paper presents the structure of some testbeds, set up in the framework of the European project WEIRD, about novel applications running on top of a WiMAX-based end-to-end architecture. The presented testbeds are based on rea...
Article
Full-text available
The IEEE 802.16 standard provides a specification for a fixed and mobile broadband wireless access system, offering high data rate transmission of multimedia services with different Quality-of-Service (QoS) requirements through the air interface. The WiMAX Forum, going beyond the air interface, defined an end-to-end WiMAX network architecture, base...
Article
Full-text available
Wireless Metropolitan Area Networks based on IEEE 802.16 standards are in the deployment phase in many countries. In fact, this technology can deliver high data rate while covering long distances, being a suitable candidate to solve the problem of digital divide and thus being able to provide connectivity in isolated and impervious areas. This pape...
Article
Full-text available
Wireless Metropolitan Area Networks based on IEEE 802.16d/e standards are soon to be deployed in several countries. However, there is lack of published literature with results from actual testbeds. This paper introduces the work done in the EU Sixth Framework Programme Project WEIRD to design and set up WiMAX testbeds in four EU countries. We descr...