Browsing by Author "Barceló Ordinas, José María"
Now showing items 1-20 of 57
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A comparative study of calibration methods for low-cost ozone sensors in IoT platforms
(2019-12-01)
Article
Open AccessThis paper shows the result of the calibration process of an Internet of Things platform for the measurement of tropospheric ozone (O 3 ). This platform, formed by 60 nodes, deployed in Italy, Spain, and Austria, consisted ... -
A cooperative ARQ for delay-tolerant vehicular networks
(2008-07-25)
Conference report
Open AccessThis paper proposes a Cooperative ARQ protocol to be used in delay-tolerant vehicular networks. The proposed scheme has been implemented and evaluated through an experimental testbed, showing that packet losses in ... -
A cooperative vehicular network framework
(2009)
Conference lecture
Open AccessVehicular Ad Hoc Networks are networks characterized by intermittent connectivity and rapid changes in their topology. This paper addresses car-to-road communications in which vehicles use Access Points (AP) in a Delay ... -
A data-driven framework for air quality sensor networks
(Institute of Electrical and Electronics Engineers (IEEE), 2024-01-11)
Article
Open AccessIn this article, we present our research vision of a framework for obtaining quality data in air quality monitoring networks using low-cost sensors (LCSs). The use of LCS networks is gaining increasing acceptance in many ... -
A hybrid cooperative design for energy-efficient surveillance in wireless multimedia sensor networks
(VDE Conference Publications, 2012)
Conference report
Restricted access - publisher's policyIn Wireless Multimedia Sensor Networks (WMSNs) the lifetime of battery-operated visual nodes is limited by their energy consumption, which is proportional to the energy required for sensing, processing, and transmitting ... -
A low-power IoT device for measuring water table levels and soil moisture to ease increased crop yields
(2022-09-09)
Article
Open AccessThe simultaneous measurement of soil water content and water table levels is of great agronomic and hydrological interest. Not only does soil moisture represent the water available for plant growth but also water table ... -
A Max coverage formulation for information dissemination in vehicular networks
(IEEE Press. Institute of Electrical and Electronics Engineers, 2009)
Conference lecture
Open AccessWe consider that a given number of Dissemination Points (DPs) have to be deployed for disseminating information to vehicles travelling in an urban area. We formulate our problem as a Maximum Coverage Problem (MCP) so as ... -
A method for clustering and cooperation in wireless multimedia sensor networks
(2010-04)
Article
Open AccessWireless multimedia sensor nodes sense areas that are uncorrelated to the areas covered by radio neighbouring sensors. Thus, node clustering for coordinating multimedia sensing and processing cannot be based on classical ... -
Analytical models for the multiplexing of worst case traffic sources and their application to ATM traffic control.
(Universitat Politècnica de Catalunya, 1998-04-23)
Doctoral thesis
Open Access -
Applying cooperation for delay tolerant vehicular networks
(2008-01-18)
Conference lecture
Open AccessThis paper proposes a Cooperative ARQ protocol to be used in delay-tolerant vehicular networks. The proposed scheme has been implemented and evaluated through an experimental testbed, showing that packet losses in ... -
Black carbon proxy sensor model for air quality IoT monitoring networks
(Association for Computing Machinery (ACM), 2023)
Conference lecture
Open AccessMost Internet of Things (IoT) air quality monitoring networks measure and report regulated pollutants such as O3, NO, NO2, SO2 or CO and PM2.5, PM10 particulates. However, there are pollutants such as black carbon that are ... -
Brief announcement: Game theoretical approach for energy-delay balancing in distributed duty-cycled MAC protocols of wireless networks
(Association for Computing Machinery (ACM), 2014)
Conference report
Open AccessOptimizing energy consumption and end-to-end (e2e) packet delay in energy constrained distributed wireless networks is a conflicting multi-objective optimization problem. This paper investigates this trade-off from a ... -
Calibrating low-cost air quality sensors using multiple arrays of sensors
(Institute of Electrical and Electronics Engineers (IEEE), 2018)
Conference report
Open AccessThe remarkable advances in sensing and communication technologies have introduced increasingly low-cost, smart and portable sensors that can be embedded everywhere and play an important role in environmental sensing ... -
CONCEPTES BÀSICS DE XARXES DE COMPUTADORS (Examen 1r quadrim.)
(Universitat Politècnica de Catalunya, 2002-01-15)
Exam
Restricted access to the UPC academic community -
Cooperative download in urban vehicular networks
(IEEE Computer Society Publications, 2009-10-12)
Conference report
Open AccessWe target urban scenarios where vehicular users can download large files from road-side Access Points (APs), and define a framework to exploit opportunistic encounters between mobile nodes to increase their transfer rate. ... -
Cooperative download in vehicular environments
(2011-05-12)
Article
Restricted access - publisher's policyWe consider a complex (i.e., nonlinear) road scenario where users aboard vehicles equipped with communication interfaces are interested in downloading large files from road-side Access Points (APs). We investigate the ... -
Cost effective node deployment strategy for energy-balanced and delay-efficient data collection in wireless sensor networks
(Institute of Electrical and Electronics Engineers (IEEE), 2014)
Conference report
Open AccessThe real-world node deployment aspect is investigated, while considering cost minimization for resolving the energy hole around the sink, which represents a serious problem in typical sensor networks with uniform distribution. ... -
Data reconstruction applications for IoT air pollution sensor networks using graph signal processing
(Elsevier, 2022-09)
Article
Open AccessThe analysis of sensor networks for air pollution monitoring is challenging. Recent studies have demonstrated the ability to reconstruct the network measurements with graphs derived from the acquired data, thus describing ... -
Delay-efficient MAC protocol with traffic differentiation and run-time parameter adaptation for energy-constrained wireless sensor networks
(2016-02-01)
Article
Open AccessThis paper presents an asynchronous cascading wake-up MAC protocol for heterogeneous traffic gathering in low-power wireless sensor networks. It jointly considers energy/delay optimization and switches between two modes, ... -
Distributed multi-scale calibration of low-cost ozone sensors in wireless sensor networks
(Multidisciplinary Digital Publishing Institute (MDPI), 2019-05-31)
Article
Open AccessNew advances in sensor technologies and communications in wireless sensor networks have favored the introduction of low-cost sensors for monitoring air quality applications. In this article, we present the results of the ...
