000149998 001__ 149998 000149998 005__ 20251017144548.0 000149998 0248_ $$2sideral$$a65453 000149998 0247_ $$2doi$$a10.1016/j.comcom.2007.12.031 000149998 037__ $$aART-2008-65453 000149998 041__ $$aeng 000149998 100__ $$0(orcid)0000-0002-7396-7840$$aMarco, A.$$uUniversidad de Zaragoza 000149998 245__ $$aLocation-Based Services for Elderly and Disabled People 000149998 260__ $$c2008 000149998 5060_ $$aAccess copy available to the general public$$fUnrestricted 000149998 5203_ $$aMany 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. 000149998 536__ $$9info:eu-repo/grantAgreement/EUR/FP6/IST-5-0535147$$9info:eu-repo/grantAgreement/ES/MICYT/TIN2006-15617-C03-02 000149998 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttps://creativecommons.org/licenses/by-nc-nd/4.0/deed.es 000149998 590__ $$a0.884$$b2008 000149998 591__ $$aTELECOMMUNICATIONS$$b32 / 66 = 0.485$$c2008$$dQ2$$eT2 000149998 591__ $$aCOMPUTER SCIENCE, INFORMATION SYSTEMS$$b65 / 98 = 0.663$$c2008$$dQ3$$eT3 000149998 591__ $$aENGINEERING, ELECTRICAL & ELECTRONIC$$b130 / 225 = 0.578$$c2008$$dQ3$$eT2 000149998 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion 000149998 700__ $$0(orcid)0000-0001-5316-8171$$aCasas, R.$$uUniversidad de Zaragoza 000149998 700__ $$0(orcid)0000-0003-4005-9552$$aFalco, J.$$uUniversidad de Zaragoza 000149998 700__ $$aGracia, H.$$uUniversidad de Zaragoza 000149998 700__ $$0(orcid)0000-0002-8007-5613$$aArtigas, J.I.$$uUniversidad de Zaragoza 000149998 700__ $$0(orcid)0000-0001-7801-0899$$aRoy, A.$$uUniversidad de Zaragoza 000149998 7102_ $$15007$$2520$$aUniversidad de Zaragoza$$bDpto. Informát.Ingenie.Sistms.$$cÁrea Ingen.Sistemas y Automát. 000149998 7102_ $$15008$$2785$$aUniversidad de Zaragoza$$bDpto. Ingeniería Electrón.Com.$$cÁrea Tecnología Electrónica 000149998 7102_ $$15008$$2X$$aUniversidad de Zaragoza$$bDpto. Ingeniería Electrón.Com.$$cProy. investigación JBA 000149998 773__ $$g31, 6 (2008), 1055-1066$$pComput. commun.$$tCOMPUTER COMMUNICATIONS$$x0140-3664 000149998 8564_ $$s456548$$uhttps://zaguan.unizar.es/record/149998/files/texto_completo.pdf$$yPostprint 000149998 8564_ $$s2624350$$uhttps://zaguan.unizar.es/record/149998/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint 000149998 909CO $$ooai:zaguan.unizar.es:149998$$particulos$$pdriver 000149998 951__ $$a2025-10-17-14:10:28 000149998 980__ $$aARTICLE