{"title":"Low collision random access using grouping nodes in underwater communications","authors":"Jongmin An, Hyeonsu Kim, Hojun Lee, Jeahak Chung","doi":"10.1109/ICUFN.2017.7993897","DOIUrl":null,"url":null,"abstract":"This paper proposes a random access method using grouping nodes which are located closely to decrease collisions of nodes by long delay propagation time in underwater acoustic environments. To reduce collision probability, each node selects its group, which is predetermined by a distance from the fusion center based on RSSI level, and aligns its transmission time to the farthest node in the group. To reduce collision in a node group, nodes choose their subcarriers to load their information based on the RSSI level. Computer simulations demonstrate that Reception Success Rate (RSR) of the proposed scheme has five times larger than that of conventional PN sequence random access. Maximum throughput of the proposed method also exhibits two times larger than the conventional PN codes.","PeriodicalId":284480,"journal":{"name":"2017 Ninth International Conference on Ubiquitous and Future Networks (ICUFN)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2017 Ninth International Conference on Ubiquitous and Future Networks (ICUFN)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICUFN.2017.7993897","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 2
Abstract
This paper proposes a random access method using grouping nodes which are located closely to decrease collisions of nodes by long delay propagation time in underwater acoustic environments. To reduce collision probability, each node selects its group, which is predetermined by a distance from the fusion center based on RSSI level, and aligns its transmission time to the farthest node in the group. To reduce collision in a node group, nodes choose their subcarriers to load their information based on the RSSI level. Computer simulations demonstrate that Reception Success Rate (RSR) of the proposed scheme has five times larger than that of conventional PN sequence random access. Maximum throughput of the proposed method also exhibits two times larger than the conventional PN codes.