{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,16]],"date-time":"2026-05-16T03:28:22Z","timestamp":1778902102581,"version":"3.51.4"},"reference-count":48,"publisher":"MDPI AG","issue":"4","license":[{"start":{"date-parts":[[2019,2,16]],"date-time":"2019-02-16T00:00:00Z","timestamp":1550275200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>In a vehicular scenario where the penetration of cars equipped with wireless communication devices is far from 100% and application requirements tend to be challenging for a cellular network not specifically planned for it, the use of unmanned aerial vehicles (UAVs), carrying mobile base stations, becomes an interesting option. In this article, we consider a cellular-vehicle-to-anything (C-V2X) application and we propose the integration of an aerial and a terrestrial component of the network, to fill the potential unavailability of short-range connections among vehicles and address unpredictable traffic distribution in space and time. In particular, we envision a UAV with C-V2X equipment providing service for the extended sensing application, and we propose a UAV trajectory design accounting for the radio resource (RR) assignment. The system is tested considering a realistic scenario by varying the RRs availability and the number of active vehicles. Simulations show the results in terms of gain in throughput and percentage of served users, with respect to the case in which the UAV is not present.<\/jats:p>","DOI":"10.3390\/s19040811","type":"journal-article","created":{"date-parts":[[2019,2,17]],"date-time":"2019-02-17T22:11:50Z","timestamp":1550441510000},"page":"811","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":18,"title":["Trajectories and Resource Management of Flying Base Stations for C-V2X"],"prefix":"10.3390","volume":"19","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1460-5046","authenticated-orcid":false,"given":"Silvia","family":"Mignardi","sequence":"first","affiliation":[{"name":"Department of Electrical, Electronic and Information Engineering \u201cGuglielmo Marconi\u201d (DEI), University of Bologna, Viale Risorgimento 2, 40136 Bologna, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4802-9585","authenticated-orcid":false,"given":"Chiara","family":"Buratti","sequence":"additional","affiliation":[{"name":"Department of Electrical, Electronic and Information Engineering \u201cGuglielmo Marconi\u201d (DEI), University of Bologna, Viale Risorgimento 2, 40136 Bologna, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3500-1997","authenticated-orcid":false,"given":"Alessandro","family":"Bazzi","sequence":"additional","affiliation":[{"name":"National Research Council of Italy (CNR), Institute of Electronics, Computer and Telecommunication Engineering (IEIIT), v.le Risorgimento, 2, 40136 Bologna, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6522-8573","authenticated-orcid":false,"given":"Roberto","family":"Verdone","sequence":"additional","affiliation":[{"name":"Department of Electrical, Electronic and Information Engineering \u201cGuglielmo Marconi\u201d (DEI), University of Bologna, Viale Risorgimento 2, 40136 Bologna, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2019,2,16]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"409","DOI":"10.1007\/s00502-015-0343-0","article-title":"Standards for vehicular communication\u2014From IEEE 802.11p to 5G","volume":"132","author":"Festag","year":"2015","journal-title":"Elektrotech. 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