{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,1]],"date-time":"2026-07-01T07:58:42Z","timestamp":1782892722732,"version":"3.54.5"},"reference-count":49,"publisher":"MDPI AG","issue":"4","license":[{"start":{"date-parts":[[2023,4,16]],"date-time":"2023-04-16T00:00:00Z","timestamp":1681603200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Computers"],"abstract":"<jats:p>Currently, the internet of things (IoT) is a technology entering various areas of society, such as transportation, agriculture, homes, smart buildings, power grids, etc. The internet of things has a wide variety of devices connected to the network, which can saturate the central links to cloud computing servers. IoT applications that are sensitive to response time are affected by the distance that data is sent to be processed for actions and results. This work aims to create a prototype application focused on emergency vehicles through a fog computing infrastructure. This technology makes it possible to reduce response times and send only the necessary data to cloud computing. The emergency vehicle contains a wireless device that sends periodic alert messages, known as an in-vehicle beacon. Beacon messages can be used to enable green traffic lights toward the destination. The prototype contains fog computing nodes interconnected as close to the vehicle as using the low-power whole area network protocol called a long-range wide area network. In the same way, fog computing nodes run a graphical user interface (GUI) application to manage the nodes. In addition, a comparison is made between fog computing and cloud computing, considering the response time of these technologies.<\/jats:p>","DOI":"10.3390\/computers12040081","type":"journal-article","created":{"date-parts":[[2023,4,17]],"date-time":"2023-04-17T03:14:09Z","timestamp":1681701249000},"page":"81","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":11,"title":["Prototype of an Emergency Response System Using IoT in a Fog Computing Environment"],"prefix":"10.3390","volume":"12","author":[{"given":"Iv\u00e1n","family":"Ortiz-Garc\u00e9s","sequence":"first","affiliation":[{"name":"Escuela de Ingenier\u00eda en Ciberseguridad, Facultad de Ingenier\u00edas y Ciencias Aplicadas, Universidad de Las Am\u00e9ricas, Quito 170125, Ecuador"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7120-281X","authenticated-orcid":false,"given":"Roberto O.","family":"Andrade","sequence":"additional","affiliation":[{"name":"Facultad de Ingenier\u00eda en Sistemas, Escuela Polit\u00e9cnica Nacional, Quito 170525, Ecuador"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Santiago","family":"Sanchez-Viteri","sequence":"additional","affiliation":[{"name":"Departamento de Sistemas, Universidad Internacional del Ecuador, Quito 170411, Ecuador"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5421-7710","authenticated-orcid":false,"given":"William","family":"Villegas-Ch.","sequence":"additional","affiliation":[{"name":"Escuela de Ingenier\u00eda en Ciberseguridad, Facultad de Ingenier\u00edas y Ciencias Aplicadas, Universidad de Las Am\u00e9ricas, Quito 170125, Ecuador"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2023,4,16]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Stojmenovic, I., and Wen, S. 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