Víctor-M. Sempere-Payá

Víctor-M. Sempere-Payá
Universitat Politècnica de València | UPV · Department of Communications

About

32
Publications
3,466
Reads
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226
Citations
Citations since 2017
3 Research Items
90 Citations
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Publications

Publications (32)
Article
Full-text available
Industrial Internet of Things (IIoT) is a disruptive paradigm which will bring new ways of monitoring, control and management for Industry 4.0 and Smart Cities. It relies on smart and connected sensors enabled by a new generation of communication technologies such as Wireless Sensor Networks (WSN). Although various solutions are becoming available,...
Article
Full-text available
Ultrasound diagnosis is a widely used medical tool. Among the various ultrasound techniques, ultrasonic imaging is particularly relevant. This paper presents an improvement to a two-dimensional (2D) ultrasonic system using measurements taken from perpendicular planes, where digital signal processing techniques are used to combine one-dimensional (1...
Article
Teaching in university engineering departments is currently facing a number of challenges, especially for those involved in the most innovative and dynamic areas of information and communication technology. Learning model developments that place greater weight on laboratory activities require investment in specific equipment that is often very expe...
Conference Paper
Full-text available
Emerging Wireless Sensor Networks (WSN) give support to a wide diversity of applications, but these networks are based on devices with limited resources, requiring communication protocols such as RPL (Routing Protocol for Low power lossy networks) which allow the routes to be fitted to certain requirements. In this paper, we design a custom energy...
Article
The use of wireless networks is having an ever greater impact on systems controlling automation, industrial manufacturing, distributed control and supervision. Wireless technologies in particular have penetrated quickly the area of control of public utilities networks, and typical examples of this are remote control and supervision of large water,...
Chapter
Water management in urban areas goes beyond the supply of drinking water or the collection and treatment of waste water. There is a growing interest in the use of Information Communication Technology (ICT), resulting in a large number of new applications that provide access to vast amounts of information generated by the diverse facilities, unthink...
Article
This work describes the design and implementation of improvements to the monitoring system of an urban waste water network, resulting in more efficient management of the system. To achieve this objective, the latest communications technology has been incorporated into heterogeneous networks and sensor systems. This technology includes mobile system...
Article
Full-text available
As new technologies for Internet access evolve, many new services arise as well, promising to fully exploit the capabilities of future access networks. This paper focuses on Internet as an access medium to industrial networks, in the framework of teleworking. An interconnection structure between Internet and manufacturing networks is described, giv...
Conference Paper
Full-text available
Urban facility interconnection networks require a robustness and reliability usually found in public networks or private cable and radio networks in licensed bands. Both factors mean an increase in costs, which also increase as the size of the network increases. The recent rise in use of wireless technologies in open wavebands has attracted the int...
Chapter
The use of VAN infrastructures to give support to applications in the traditional areas of industrial networks , and in particular in applications with MAN requirements, as can be found in building automation, or the case studied here; utilities network control, is viable but with limitations. The use of wireless networks such as WiMAX allows propr...
Conference Paper
Full-text available
This paper presents experiments on the performance and the viability of the AODV protocol (Ad hoc On-demand Distance Vector protocol) in multi-hop ad hoc networks, for use with multimedia traffic. This type of traffic presents some particular characteristics which make it difficult for AODV to serve fluently and reliably. After this experimental st...
Article
Full-text available
In this paper we expose our present work on a real-time monitoring system of human activities, using only a single cell phone equipped with some particular sensors. This way the monitoring system is reduced to the minimum expression, no especial hardware is required as far as a conventional cell phone will monitor the user. In particular, we expose...
Conference Paper
The supervision of industrial processes requires the exchange of information in real time between users and control systems. Users may be moving around a working area and need to consult information to supervise a particular process. Therefore, it is important to study the characteristics and stability of the paths to determine which services can b...
Article
Recently, much attention has been given to the need to endow industrial communication networks used in real-time systems with flexible scheduling. This allows control systems to adapt to the variations in the requirements of traffic generated by modifications in the environment of the system, or changes in its structure. Another active area is mult...
Article
Different communication alternatives that form an Heterogeneous Network for a Supervision and Control System of the purification network of a large city are evaluated in order to determine their viability for the supervision and control of the system. In addition there is a study of which offers the best services and costs for different scenarios....
Conference Paper
The integration of ad-hoc networks into real environments is now becoming more and more common and supervision and control systems are no exception. The efficiency of the communication in these networks as well as various other factors, are governed by the working area, the number of nodes, mobility, transmission power, etc. In this paper, the mobi...
Conference Paper
This paper proposes a measurement system of QoS parameters for a SIP based Internet telephony service. This system is called QoS agent and will allow telephony user to receive alerts in real time if network conditions are not suitable to make a call. Two complementary types of measurement methods will be used. The first one is called incall method...
Conference Paper
Full-text available
The limitation in maximum packet size of fieldbuses, is one of the characteristics that limit throughput in these networks. This restricts the range of multimedia applications viable over these infrastructures. In Ethernet, the limitation of 1500 bytes is currently being surpassed by the use of jumbo-frames, which offer a maximum frame size of 9 Kb...
Conference Paper
Full-text available
The impact of the use of mobile devices by means of GPRS (general packet radio service) technology to access environmental information in real time, provided by sensors strategically placed in a metropolitan area has been studied with the objective of using this information to find out rainfall volume and phreatic levels in times of emergency. This...
Conference Paper
The analysis of video traffic characteristics plays a fundamental role in the evaluation of network performance or schedule design. However, the majority of these analyses are based on the study of traffic characteristics generated with different codifiers on typical general purpose films or sequences. These are generally made using asymmetric codi...
Article
Full-text available
Wireless Local area networks (wLANs), particularly from standards 802.1b/g, have become extremely widespread in a very short time, in society in general as well as at an industrial level. One of the limitations of this technology is its coverage. The family of new standards, such as 802.16, allows us to overcome these limitations, enabling then the...
Article
The present systems of control based on polling by radio frequency must evolve to be able to carry advanced telecommunication services, such as capture and multimedia information management as well as control information. In this paper a supervision and control system based in public networks that complements a classic polling system allowing to in...
Article
The mechanisms for static scheduling are inefficient and inadequate when the traffic being carried varies greatly in its bandwidth requirements, especially if there are also variations in run time. For this reason, dynamic traffic scheduling over Profibus, with the objective of developing flexible scheduling systems over this network is analyzed. T...
Article
This paper analyzes the transmission of images through Profibus for applications concerned with the processing of images integrated in control systems, by means of a detailed study of two real cases with different bandwidth requirements. We analyze the special features of an artificial vision system making use of Profibus as a transport system, the...
Conference Paper
Full-text available
This paper analyses, by means of a real implementation, the ability of Profibus to transport images, analyzing its repercussion on the periodic traffic of control, and the measures concerning MAC (medium access control) that can be taken in order to minimize this incidence while optimizing image transportation. The paper focuses on image transport...
Conference Paper
Full-text available
In this paper, a system for the transport of images across Profibus industrial networks acting as support to the monitoring and control system of industrial processes is implemented and evaluated. The capacity of Fieldbus Data Link (FDL) to support the transport of images and the impact on the performance achieved through the utilization of compres...
Article
The aim of this paper is to introduce industrial communications into the debate of the emerging world wide telecommunications networks. Industry demands for more flexibility, scalability and efectiveness in the management of its resources. In this paper two interconnection strategies has been investigated that try to meet these growing demands. The...

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Projects

Project (1)
Project
This project aims to contribute to the study of resource management mechanisms in the radio access network (RAN) and of mobility management mechanisms, for 5G technology. The main focus of this project is on the RAN, although some of these mechanisms may involve core network functions responsible for the control of the RAN (e.g., Access and Mobility Management Function for mobility management). More specifically, we will explore the resource management mechanisms of a network infrastructure that support the NS concept. This project will address the management of physical and virtual resource allocation to tenants by the infrastructure provider, as well as the business models associated with this provider-tenant relationship.