{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,21]],"date-time":"2026-07-21T14:26:23Z","timestamp":1784643983528,"version":"3.55.0"},"reference-count":29,"publisher":"Wiley","license":[{"start":{"date-parts":[[2019,4,8]],"date-time":"2019-04-08T00:00:00Z","timestamp":1554681600000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Wireless Communications and Mobile Computing"],"published-print":{"date-parts":[[2019,4,8]]},"abstract":"<jats:p>When telecommunication infrastructure is damaged by natural disasters, creating a network that can handle voice channels can be vital for search and rescue missions. Unmanned Aerial Vehicles (UAV) equipped with WiFi access points could be rapidly deployed to provide wireless coverage to ground users. This WiFi access network can in turn be used to provide a reliable communication service to be used in search and rescue missions. We formulate a new problem for UAVs optimal deployment which considers not only WiFi coverage but also the mac sublayer (i.e., quality of service). Our goal is to dispatch the minimum number of UAVs for provisioning a WiFi network that enables reliable VoIP communications in disaster scenarios. Among valid solutions, we choose the one that minimizes energy expenditure at the user\u2019s WiFi interface card in order to extend ground user\u2019s smartphone battery life as much as possible. Solutions are found using well-known heuristics such as K-means clusterization and genetic algorithms. Via numerical results, we show that the IEEE 802.11 standard revision has a decisive impact on the number of UAVs required to cover large areas, and that the user\u2019s average energy expenditure (attributable to communications) can be reduced by limiting the maximum altitude for drones or by increasing the VoIP speech quality.<\/jats:p>","DOI":"10.1155\/2019\/7521513","type":"journal-article","created":{"date-parts":[[2019,4,8]],"date-time":"2019-04-08T19:31:02Z","timestamp":1554751862000},"page":"1-20","source":"Crossref","is-referenced-by-count":47,"title":["Deploying a Reliable UAV-Aided Communication Service in Disaster Areas"],"prefix":"10.1155","volume":"2019","author":[{"given":"Vicente","family":"Mayor","sequence":"first","affiliation":[{"name":"Department of Telematics Engineering, Escuela Superior de Ingenieros, Universidad de Sevilla, C\/ Camino de los Descubrimientos s\/n, 41092 Sevilla, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rafael","family":"Estepa","sequence":"additional","affiliation":[{"name":"Department of Telematics Engineering, Escuela Superior de Ingenieros, Universidad de Sevilla, C\/ Camino de los Descubrimientos s\/n, 41092 Sevilla, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1841-3973","authenticated-orcid":true,"given":"Antonio","family":"Estepa","sequence":"additional","affiliation":[{"name":"Department of Telematics Engineering, Escuela Superior de Ingenieros, Universidad de Sevilla, C\/ Camino de los Descubrimientos s\/n, 41092 Sevilla, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"German","family":"Madinabeitia","sequence":"additional","affiliation":[{"name":"Department of Telematics Engineering, Escuela Superior de Ingenieros, Universidad de Sevilla, C\/ Camino de los Descubrimientos s\/n, 41092 Sevilla, 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