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The probabilistic transmission scheme has been proposed as one of the typical opportunistic transmission schemes. However, most existing probabilistic transmission schemes neglect that, opportunistic transmission tasks in some applications have transmission time and cost budgets, and to set proper delay and hop count thresholds on encountering probabilities between relay nodes and their destination nodes can help to filter redundant long\u2010delay and high\u2010cost opportunistic paths for packets. In this study, the authors proposed a delay\u2010aware and cost\u2010efficient probabilistic transmission method for opportunistic networks. In this method, direct and indirect encountering probabilities related to delay and hop count are defined, and accordingly, a relay node selection algorithm is provided with preset encountering delay and hop count thresholds to compare probabilities of nodes to encounter the destination node within the preset thresholds as their transmission quality metrics. The simulation results verify that the proposed method can reduce transmission delay and cost efficiently.<\/jats:p>","DOI":"10.1049\/iet-net.2020.0082","type":"journal-article","created":{"date-parts":[[2020,11,4]],"date-time":"2020-11-04T02:17:06Z","timestamp":1604456226000},"page":"372-377","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Delay\u2010aware and cost\u2010efficient probabilistic transmission for opportunistic networks"],"prefix":"10.1049","volume":"9","author":[{"given":"Jun","family":"Li","sequence":"first","affiliation":[{"name":"China Industrial Control Systems Cyber Emergency Response Team Beijing 100040 People's Republic of China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1125-0411","authenticated-orcid":false,"given":"Xing\u2010Yu","family":"He","sequence":"additional","affiliation":[{"name":"College of Communication and Art Design University of Shanghai for Science and Technology Shanghai 200093 People's Republic of China"}]},{"given":"Dan","family":"Zhao","sequence":"additional","affiliation":[{"name":"School of Optic\u2010Electrical and Computer Engineering Shanghai Key Lab of Modern Optical System University of Shanghai for Science and Technology Shanghai 200093 People's Republic of China"}]},{"given":"Gui\u2010Song","family":"Yang","sequence":"additional","affiliation":[{"name":"School of Optic\u2010Electrical and Computer Engineering Shanghai Key Lab of Modern Optical System University of Shanghai for Science and Technology Shanghai 200093 People's Republic of China"}]},{"given":"Dao\u2010Jing","family":"He","sequence":"additional","affiliation":[{"name":"School of Software Engineering East China Normal University Shanghai 200062 People's Republic of China"}]},{"given":"Sammy","family":"Chan","sequence":"additional","affiliation":[{"name":"Department of Electrical Engineering City University of Hong Kong Hong Kong SAR People's Republic of China"}]}],"member":"265","published-online":{"date-parts":[[2020,11,3]]},"reference":[{"key":"e_1_2_8_2_2","doi-asserted-by":"publisher","DOI":"10.1109\/TMC.2014.2357791"},{"key":"e_1_2_8_3_2","doi-asserted-by":"publisher","DOI":"10.1109\/TSMC.2015.2418283"},{"key":"e_1_2_8_4_2","doi-asserted-by":"crossref","unstructured":"SuiZ.: \u2018The research of the route protocols in opportunistic network\u2019.Proc. 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