{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,3]],"date-time":"2026-06-03T00:00:22Z","timestamp":1780444822287,"version":"3.54.1"},"reference-count":53,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2020,7,30]],"date-time":"2020-07-30T00:00:00Z","timestamp":1596067200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Spanish Ministry of Economy and Competitiveness","award":["RTI2018-095168-B-C54"],"award-info":[{"award-number":["RTI2018-095168-B-C54"]}]},{"name":"Spanish Ministry of Economy and Competitiveness","award":["TEC2017-90808-REDT"],"award-info":[{"award-number":["TEC2017-90808-REDT"]}]},{"name":"Spanish Ministry of Economy and Competitiveness","award":["Programa Torres-Quevedo, PTQ2018-009981"],"award-info":[{"award-number":["Programa Torres-Quevedo, PTQ2018-009981"]}]},{"name":"Regional Government of Extremadura and the European Regional Development Fund","award":["GR18038"],"award-info":[{"award-number":["GR18038"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Data"],"abstract":"<jats:p>The technologies and sensors embedded in smartphones have contributed to the spread of disruptive applications built on top of Location Based Services (LBSs). Among them, Bluetooth Low Energy (BLE) has been widely adopted for proximity and localization, as it is a simple but efficient positioning technology. This article presents a database of received signal strength measurements (RSSIs) on BLE signals in a real positioning system. The system was deployed on two buildings belonging to the campus of the University of Extremadura in Badajoz. the database is divided into three different deployments, changing in each of them the number of measurement points and the configuration of the BLE beacons. the beacons used in this work can broadcast up to six emission slots simultaneously. Fingerprinting positioning experiments are presented in this work using multiple slots, improving positioning accuracy when compared with the traditional single slot approach.<\/jats:p>","DOI":"10.3390\/data5030067","type":"journal-article","created":{"date-parts":[[2020,7,31]],"date-time":"2020-07-31T04:15:31Z","timestamp":1596168931000},"page":"67","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":36,"title":["Multi-Slot BLE Raw Database for Accurate Positioning in Mixed Indoor\/Outdoor Environments"],"prefix":"10.3390","volume":"5","author":[{"given":"Fernando J.","family":"Aranda","sequence":"first","affiliation":[{"name":"Sensory Systems Research Group, University of Extremadura, 06006 Badajoz, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1739-829X","authenticated-orcid":false,"given":"Felipe","family":"Parralejo","sequence":"additional","affiliation":[{"name":"Sensory Systems Research Group, University of Extremadura, 06006 Badajoz, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fernando J.","family":"\u00c1lvarez","sequence":"additional","affiliation":[{"name":"Sensory Systems Research Group, University of Extremadura, 06006 Badajoz, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4338-4334","authenticated-orcid":false,"given":"Joaqu\u00edn","family":"Torres-Sospedra","sequence":"additional","affiliation":[{"name":"UBIK Geospatial Solutions S.L., Espaitec2, Campus de Riu Sec, Avda. Vicente Sos Baynat S\/N, 12006 Castell\u00f3n, Spain"},{"name":"Institute of New Imaging Technologies, Universitat Jaume I, Avda. Vicente Sos Baynat S\/N, 12071 Castell\u00f3n, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2020,7,30]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"58","DOI":"10.1109\/MPRV.2011.13","article-title":"LifeMap: A Smartphone-Based Context Provider for Location-Based Services","volume":"10","author":"Chon","year":"2011","journal-title":"IEEE Pervasive Comput."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"2762","DOI":"10.1109\/TITS.2017.2766768","article-title":"GNSS Position Integrity in Urban Environments: A Review of Literature","volume":"19","author":"Zhu","year":"2018","journal-title":"IEEE Trans. Intell. Transp. Syst."},{"key":"ref_3","doi-asserted-by":"crossref","unstructured":"Lejba, P., Nawrocki, J., Lemanski, D., Nogas, P., and Dunst, P. 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