149998 20251017144548.0 doi 10.1016/j.comcom.2007.12.031 sideral 65453 ART-2008-65453 eng Marco, A. Universidad de Zaragoza (orcid)0000-0002-7396-7840 Location-Based Services for Elderly and Disabled People 2008 Access copy available to the general public Unrestricted Many techniques have been developed to perform indoor location. Each strategy has its own advantages and drawbacks, with the application demanding location information the main determinant of the system to be used. In this paper, a system is presented that serves location to innovative services for elderly and disabled people, ranging from alarm and monitoring to support for navigation and leisure. The system uses ZigBee and ultrasound to fulfill the application requirements, differing in this respect from all other existing systems. ZUPS (ZigBee and ultrasound positioning system) provides wide multicell coverage, easy extension, robustness even in crowded scenarios, different levels of precision depending on the user’s profile and service requirements (from a few centimeters to meters), limited infrastructure requirements, simple calibration, and cost-effectiveness. The system has been evaluated from the technical, functional, and usability standpoints, with satisfactory results, and its suitability has also been demonstrated in a residence for people with disabilities located in Zaragoza, Spain. info:eu-repo/grantAgreement/EUR/FP6/IST-5-0535147 info:eu-repo/grantAgreement/ES/MICYT/TIN2006-15617-C03-02 info:eu-repo/semantics/openAccess by-nc-nd https://creativecommons.org/licenses/by-nc-nd/4.0/deed.es 0.884 2008 TELECOMMUNICATIONS 32 / 66 = 0.485 2008 Q2 T2 COMPUTER SCIENCE, INFORMATION SYSTEMS 65 / 98 = 0.663 2008 Q3 T3 ENGINEERING, ELECTRICAL & ELECTRONIC 130 / 225 = 0.578 2008 Q3 T2 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Casas, R. Universidad de Zaragoza (orcid)0000-0001-5316-8171 Falco, J. Universidad de Zaragoza (orcid)0000-0003-4005-9552 Gracia, H. Universidad de Zaragoza Artigas, J.I. Universidad de Zaragoza (orcid)0000-0002-8007-5613 Roy, A. Universidad de Zaragoza (orcid)0000-0001-7801-0899 5007 520 Universidad de Zaragoza Dpto. Informát.Ingenie.Sistms. Área Ingen.Sistemas y Automát. 5008 785 Universidad de Zaragoza Dpto. Ingeniería Electrón.Com. Área Tecnología Electrónica 5008 X Universidad de Zaragoza Dpto. Ingeniería Electrón.Com. Proy. investigación JBA 31, 6 (2008), 1055-1066 Comput. commun. COMPUTER COMMUNICATIONS 0140-3664 456548 http://zaguan.unizar.es/record/149998/files/texto_completo.pdf Postprint 2624350 http://zaguan.unizar.es/record/149998/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:149998 articulos driver 2025-10-17-14:10:28 ARTICLE