Now showing items 1-20 of 57

    • A bluetooth low energy indoor positioning system with channel diversity, weighted trilateration and Kalman filtering 

      Cantón Paterna, Vicente; Calveras Augé, Anna M.; Paradells Aspas, Josep; Perez Bullones, Maria Antonia (Multidisciplinary Digital Publishing Institute (MDPI), 2017-12-01)
      Article
      Open Access
      Indoor Positioning Systems (IPS) using Bluetooth Low Energy (BLE) technology are currently becoming real and available, which has made them grow in popularity and use. However, there are still plenty of challenges related ...
    • A distributed man-machine dispatching architecture for emergency operations based on 3GPP mission critical services 

      Viamonte Solé, David; Calveras Augé, Anna M. (Institute of Electrical and Electronics Engineers (IEEE), 2017-12-16)
      Article
      Open Access
      With the number of non-human devices expected to significantly overtake human users of LTE networks, it is no surprise that First Responders in Mission Critical operations will need to interact with an increasing number ...
    • A novel dissemination protocol to deploy opportunistic services in federated satellite systems 

      Ruiz De Azúa Ortega, Juan Adrián; Calveras Augé, Anna M.; Camps Carmona, Adriano José (Institute of Electrical and Electronics Engineers (IEEE), 2020-08-03)
      Article
      Open Access
      The Earth Observation community is demanding new satellite applications that cover the need of monitoring different areas with high spatial resolution and short revisit times. These applications will generate huge amounts ...
    • A novel power efficient location-based cooperative routing with transmission power-upper-limit for wireless sensor networks 

      Shi, Juanfei; Calveras Augé, Anna M.; Cheng, Ye; Liu, Kai (2013-05-15)
      Article
      Open Access
      The extensive usage of wireless sensor networks (WSNs) has led to the development of many power- and energy-efficient routing protocols. Cooperative routing in WSNs can improve performance in these types of networks. In ...
    • A presence-aware smart home system (PASH) 

      García Davis, Ernesto; Calveras Augé, Anna M. (2011-06-08)
      Article
      Restricted access - publisher's policy
      Wireless Sensor Networks are providing tremendous benefit for a number of industries. A subset of sensed data collected by these networks is presence information. A smart home control system can be designed based on presence ...
    • A proxy design to leverage the interconnection of CoAP wireless sensor networks with web applications 

      Ludovici, Alessandro; Calveras Augé, Anna M. (2015-01-09)
      Article
      Open Access
      In this paper, we present the design of a Constrained Application Protocol (CoAP) proxy able to interconnect Web applications based on Hypertext Transfer Protocol (HTTP) and WebSocket with CoAP based Wireless Sensor Networks. ...
    • A two-way radio communication across a multi-hop wireless sensor network based on a commercial IEEE 802.15.4 compliant platform 

      Herrera, Laura; Calveras Augé, Anna M.; Catalán Cid, María Luisa (Elsevier, 2012)
      Conference lecture
      Open Access
      Wireless Sensor Networks, and especially IEEE 802.15.4, are originally defined for low cost applications, with low bit rates and power restrictions in mind. However, the ubiquity of the nodes and their easy connectivity ...
    • Adding QoS support for timeliness to the observe extension of CoAP 

      Ludovici, Alessandro; García, Ernesto; Gimeno, Xavier; Calveras Augé, Anna M. (2012)
      Conference report
      Restricted access - publisher's policy
      In this paper, we propose a modification of the observe extension of CoAP to include Quality of Service (QoS) support for timeliness. The proposed QoS support is based on delivery priority. Nodes are able to express the ...
    • An alternative to IEEE 802.11ba: wake-up radio with legacy IEEE 802.11 transmitters 

      Cervià Caballé, Martí; Calveras Augé, Anna M.; López Aguilera, M. Elena; García Villegas, Eduard; Demirkol, Ilker Seyfettin; Paradells Aspas, Josep (Institute of Electrical and Electronics Engineers (IEEE), 2019-04-09)
      Article
      Open Access
      Current standardization process for Wake-up Radio (WuR) within the IEEE 802.11 Working Group, known as the IEEE 802.11ba, has brought interest to the IEEE 802.11-related technologies for the implementation of WuR systems. ...
    • An improvement over TCP Vegas to enhance its performance in optical burst switching networks 

      Poorzare, Reza; Calveras Augé, Anna M.; Abedidarabad, Siamak (2021-04-01)
      Article
      Open Access
      The demand for high bandwidth on the Internet is growing drastically, and one of the solutions for tackling this problem is using optical networks. Burst switching is one of the techniques that can be used in optical ...
    • Analytical model of large data transactions in CoAP networks 

      Ludovici, Alessandro; Di Marco, Piergiuseppe; Calveras Augé, Anna M.; Johansson, Karl H. (2014-08-01)
      Article
      Open Access
      We propose a novel analytical model to study fragmentation methods in wireless sensor networks adopting the Constrained Application Protocol (CoAP) and the IEEE 802.15.4 standard for medium access control (MAC). The blockwise ...
    • Aplicación de métodos de compresión de cabeceras TCP/IP como optimización de las comunicaciones móviles 

      Calveras Augé, Anna M.; Catalán Cid, María Luisa (Escola Tècnica Superior d'Enginyers de Telecomunicació de Barcelona, 2003)
      Article
      Open Access
      El protocolo TCP (Transmission Control Protocol) está implementado para actuar en redes fija s, donde las incidencias en la comunicación pueden interpreta rse como problemas de con ges tión. En entornos móviles, en ...
    • Assessing LoRa for satellite-to-Earth communications considering the impact of Ionospheric Scintillation 

      Fernandez Capon, Lara Pilar; Ruiz De Azúa Ortega, Juan Adrián; Calveras Augé, Anna M.; Camps Carmona, Adriano José (Institute of Electrical and Electronics Engineers (IEEE), 2020-09-07)
      Article
      Open Access
      Since the appearance of 5G, Internet of Things (IoT) has gained an increased interest, with multiple technologies emerging and converging to cover different user needs. One of the biggest challenges today is to have global ...
    • Assessment of satellite contacts using predictive algorithms for autonomous satellite networks 

      Ruiz De Azúa Ortega, Juan Adrián; Ramírez, Victoria; Hyuk, Park; Calveras Augé, Anna M.; Camps Carmona, Adriano José (Institute of Electrical and Electronics Engineers (IEEE), 2020-05-28)
      Article
      Open Access
      Upcoming Low Earth Orbit Satellite Networks will provide low-latency and high downlink capacity necessary for future broadband communications and Earth Observation missions. This architecture was proposed at the beginning ...
    • Benefits of using mobile ad-hoc network protocols in federated satellite systems for polar satellite missions 

      Ruiz de Azúa Ortega, Joan Adrià; Camps Carmona, Adriano José; Calveras Augé, Anna M. (Institute of Electrical and Electronics Engineers (IEEE), 2018-09-19)
      Article
      Open Access
      The Operational Network of Individual Observation Nodes (ONION) project evaluated the benefits of applying Distributed Satellite System (DSS) architectures to Earth Observation. One of its outcomes is the identification ...
    • ³Cat-4 Mission: a 1-unit cubesat for earth observation with a L-band radiometer and a GNSS-reflectometer using software defined radio 

      Ruiz De Azúa Ortega, Juan Adrián; Muñoz Martin, Joan Francesc; Fernandez Capon, Lara Pilar; Badia Ballús, Marc; Llaveria Godoy, David; Diez Garcia, Carlos; Aguilella, Andrea; Pérez Portero, Adrián; Milián, O.; Sobrino Hidalgo, Marco; Navarro Trastoy, Ángel; Lleó, H.; Sureda Anfres, Miquel; Soria Guerrero, Manel; Calveras Augé, Anna M.; Camps Carmona, Adriano José (2019)
      Conference lecture
      Restricted access - publisher's policy
      Global Navigation Satellite System Reflectometry and L-band microwave radiometry have been used for soil moisture, biomass, and cryosphere studies. Combining both technologies in a low-power and cost-effective solution ...
    • Challenges on the way of implementing TCP over 5G networks 

      Poorzare, Reza; Calveras Augé, Anna M. (Institute of Electrical and Electronics Engineers (IEEE), 2020-09-24)
      Article
      Open Access
      5G cellular communication, especially with its hugely available bandwidth provided by millimeter-wave, is a promising technology to fulfill the coming high demand for vast data rates. These networks can support new use ...
    • Competition: interference-aware multi-channel cross layer protocol for energy-efficient and low-delay networking 

      Sierra Aiello, Guillermo; Demirkol, Ilker Seyfettin; Calveras Augé, Anna M.; Gómez Montenegro, Carlos; García Villegas, Eduard; Betzler, August (Association for Computing Machinery (ACM), 2016)
      Conference lecture
      Restricted access - publisher's policy
      This document aims to present the general ideas and methodology that are planned to be used for the EWSN 2016 Dependability Competition by the Wireless Networks Group of Universitat Politecnica de Catalunya. We designed, ...
    • Contribución al estudio de mejora de prestaciones del protocolo TCP en diferentes entornos 

      Calveras Augé, Anna M. (Universitat Politècnica de Catalunya, 2000-01-19)
      Doctoral thesis
      Open Access
      Internet, la mayor red de ordenadores del mundo, formada por millones de terminales repartidos por todo el planeta, está basada en la arquitectura de protocolos TCP/IP, cuyas aplicaciones más utilizadas son, sin duda, el ...
    • Cooperative intelligent transport systems for vulnerable road users safety 

      Casademont Serra, Jordi; Calveras Augé, Anna M.; Quiñones, David; Navarro Rodero, Mònica; Arribas Lázaro, Javier; Catalán Cid, Miguel (Institute of Electrical and Electronics Engineers (IEEE), 2019)
      Conference lecture
      Restricted access - publisher's policy
      Cooperative-Intelligent Transport Systems (C-ITS) are one of the flagships of new coming automotive and communication industries. Mobility needs to be safer and more efficient and C-ITS are the key for this new era. On the ...