{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T04:24:40Z","timestamp":1760243080298,"version":"build-2065373602"},"reference-count":34,"publisher":"MDPI AG","issue":"6","license":[{"start":{"date-parts":[[2015,6,11]],"date-time":"2015-06-11T00:00:00Z","timestamp":1433980800000},"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>The development of smart cities has been the epicentre of many researchers\u2019 efforts during the past decade. One of the key requirements for smart city networks is mobility and this is the reason stable, reliable and high-quality wireless communications are needed in order to connect people and devices. Most research efforts so far, have used different kinds of wireless and sensor networks, making interoperability rather difficult to accomplish in smart cities. One common solution proposed in the recent literature is the use of software defined networks (SDNs), in order to enhance interoperability among the various heterogeneous wireless networks. In addition, SDNs can take advantage of the data retrieved from available sensors and use them as part of the intelligent decision making process contacted during the resource allocation procedure. In this paper, we propose an architecture combining heterogeneous wireless networks with social networks using SDNs. Specifically, we exploit the information retrieved from location based social networks regarding users\u2019 locations and we attempt to predict areas that will be crowded by using specially-designed machine learning techniques. By recognizing possible crowded areas, we can provide mobile operators with recommendations about areas requiring datacell activation or deactivation.<\/jats:p>","DOI":"10.3390\/s150613705","type":"journal-article","created":{"date-parts":[[2015,6,11]],"date-time":"2015-06-11T10:44:59Z","timestamp":1434019499000},"page":"13705-13724","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["Socially Aware Heterogeneous Wireless Networks"],"prefix":"10.3390","volume":"15","author":[{"given":"Pavlos","family":"Kosmides","sequence":"first","affiliation":[{"name":"School of Electrical and Computer Engineering, National Technical University of Athens,  Athens 15773, Greece"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7137-012X","authenticated-orcid":false,"given":"Evgenia","family":"Adamopoulou","sequence":"additional","affiliation":[{"name":"School of Electrical and Computer Engineering, National Technical University of Athens,  Athens 15773, Greece"}]},{"given":"Konstantinos","family":"Demestichas","sequence":"additional","affiliation":[{"name":"School of Electrical and Computer Engineering, National Technical University of Athens,  Athens 15773, Greece"}]},{"given":"Michael","family":"Theologou","sequence":"additional","affiliation":[{"name":"School of Electrical and Computer Engineering, National Technical University of Athens,  Athens 15773, Greece"}]},{"given":"Miltiades","family":"Anagnostou","sequence":"additional","affiliation":[{"name":"School of Electrical and Computer Engineering, National Technical University of Athens,  Athens 15773, Greece"}]},{"given":"Angelos","family":"Rouskas","sequence":"additional","affiliation":[{"name":"Department of Digital Systems, University of Piraeus, Piraeus 18534, Greece"}]}],"member":"1968","published-online":{"date-parts":[[2015,6,11]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"54","DOI":"10.1109\/MCOM.2012.6211486","article-title":"Heterogeneous Cellular Networks: From Theory to Practice","volume":"50","author":"Ghosh","year":"2012","journal-title":"IEEE Commun. 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