{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,20]],"date-time":"2025-11-20T18:35:08Z","timestamp":1763663708695,"version":"3.37.3"},"reference-count":22,"publisher":"SAGE Publications","issue":"2","license":[{"start":{"date-parts":[[2018,2,1]],"date-time":"2018-02-01T00:00:00Z","timestamp":1517443200000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"funder":[{"name":"Natural Science Foundation of the Jiangsu Higher Education Institutions of China","award":["No. 15KJB520015"],"award-info":[{"award-number":["No. 15KJB520015"]}]},{"DOI":"10.13039\/501100004608","name":"Natural Science Foundation of Jiangsu Province","doi-asserted-by":"publisher","award":["No. BK20150960"],"award-info":[{"award-number":["No. BK20150960"]}],"id":[{"id":"10.13039\/501100004608","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science foundation of china","doi-asserted-by":"crossref","award":["No. 61502230"],"award-info":[{"award-number":["No. 61502230"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"crossref"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science foundation of china","doi-asserted-by":"crossref","award":["61073197"],"award-info":[{"award-number":["61073197"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["International Journal of Distributed Sensor Networks"],"published-print":{"date-parts":[[2018,2]]},"abstract":"<jats:p> Barrier coverage is attractive for many practical applications of directional sensor networks. Power conservation is one of the important issues in directional sensor networks. In this article, we address energy-efficient barrier coverage for directional sensor networks with mobile sensors. First, we derive the critical condition for mobile deployment. We assume that a number of stationary directional sensors are placed independently and randomly following a Poisson point process in a two-dimensional rectangular area. Our analysis shows that the critical condition only depends on the deployment density ([Formula: see text]) and the sensing radius ( r). When the initial deployment satisfies [Formula: see text], barrier gaps may exist, so we need to redeploy mobile sensors to improve the barrier coverage. Then, we propose an energy-efficient barrier repair algorithm to construct an energy-efficient barrier to detect intruders moving along restricted crossing paths in the target area. Through extensive simulations, the results show that the energy-efficient barrier repair algorithm improves the barrier coverage and prolongs the network lifetime by minimizing the maximum sensor moving distance. And in comparison with the energy-efficient barrier coverage algorithm (previous works), the energy-efficient barrier repair algorithm increases by 18% of network lifetime on average. <\/jats:p>","DOI":"10.1177\/1550147718761582","type":"journal-article","created":{"date-parts":[[2018,2,27]],"date-time":"2018-02-27T07:23:28Z","timestamp":1519716208000},"page":"155014771876158","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":15,"title":["Strong barrier coverage of directional sensor networks with mobile sensors"],"prefix":"10.1177","volume":"14","author":[{"given":"Lu","family":"Zhao","sequence":"first","affiliation":[{"name":"School of Computer Science and Engineering, Nanjing University of Science and Technology, Nanjing, China"}]},{"given":"Guangwei","family":"Bai","sequence":"additional","affiliation":[{"name":"School of Computer Science and Technology, Nanjing Tech University, Nanjing, China"}]},{"given":"Hang","family":"Shen","sequence":"additional","affiliation":[{"name":"School of Computer Science and Technology, Nanjing Tech University, Nanjing, China"},{"name":"National Engineering Research Center of Communications and Networking (Nanjing University of Posts and Telecommunications), Nanjing, China"}]},{"given":"Zhenmin","family":"Tang","sequence":"additional","affiliation":[{"name":"School of Computer Science and Engineering, Nanjing University of Science and Technology, Nanjing, China"}]}],"member":"179","published-online":{"date-parts":[[2018,2,26]]},"reference":[{"key":"bibr1-1550147718761582","doi-asserted-by":"publisher","DOI":"10.1002\/rsa.20656"},{"key":"bibr2-1550147718761582","doi-asserted-by":"publisher","DOI":"10.1109\/JSEN.2014.2310180"},{"first-page":"1816","volume-title":"Proceedings of the IEEE GLOBECOM global telecommunications conference","author":"Zhang L","key":"bibr3-1550147718761582"},{"volume-title":"Proceedings of the 12th ACM 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