{"title":"LTE-U/WiFi共存的改进LBT机制和性能增强","authors":"J. Dai, Cong Shen","doi":"10.1109/ICCChina.2017.8330330","DOIUrl":null,"url":null,"abstract":"Unlicensed spectrum, unlike its licensed counterpart, has to be shared by multiple technologies and hence the performance is heavily impacted by cross-technology interference. In this paper, we focus on the co-existence mechanism design of LTE-U and WiFi in the unlicensed spectrum. We propose a modified-LBT (M-LBT) mechanism for LTE-U coexisting with WiFi in unlicensed band. Moreover, a precoding algorithm is designed to utilize spatial resource. Meanwhile, a user selection scheme can be applied to balance fairness and efficiency of LTE-U users. Simulation results demonstrate that the M-LBT mechanism can improve the total system throughput while guaranteeing fairness between LTE-U and WiFi.","PeriodicalId":418396,"journal":{"name":"2017 IEEE/CIC International Conference on Communications in China (ICCC)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":"{\"title\":\"A modified LBT mechanism and performance enhancement for LTE-U/WiFi co-existence\",\"authors\":\"J. Dai, Cong Shen\",\"doi\":\"10.1109/ICCChina.2017.8330330\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Unlicensed spectrum, unlike its licensed counterpart, has to be shared by multiple technologies and hence the performance is heavily impacted by cross-technology interference. In this paper, we focus on the co-existence mechanism design of LTE-U and WiFi in the unlicensed spectrum. We propose a modified-LBT (M-LBT) mechanism for LTE-U coexisting with WiFi in unlicensed band. Moreover, a precoding algorithm is designed to utilize spatial resource. Meanwhile, a user selection scheme can be applied to balance fairness and efficiency of LTE-U users. Simulation results demonstrate that the M-LBT mechanism can improve the total system throughput while guaranteeing fairness between LTE-U and WiFi.\",\"PeriodicalId\":418396,\"journal\":{\"name\":\"2017 IEEE/CIC International Conference on Communications in China (ICCC)\",\"volume\":\"48 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2017-10-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2017 IEEE/CIC International Conference on Communications in China (ICCC)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ICCChina.2017.8330330\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2017 IEEE/CIC International Conference on Communications in China (ICCC)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICCChina.2017.8330330","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
A modified LBT mechanism and performance enhancement for LTE-U/WiFi co-existence
Unlicensed spectrum, unlike its licensed counterpart, has to be shared by multiple technologies and hence the performance is heavily impacted by cross-technology interference. In this paper, we focus on the co-existence mechanism design of LTE-U and WiFi in the unlicensed spectrum. We propose a modified-LBT (M-LBT) mechanism for LTE-U coexisting with WiFi in unlicensed band. Moreover, a precoding algorithm is designed to utilize spatial resource. Meanwhile, a user selection scheme can be applied to balance fairness and efficiency of LTE-U users. Simulation results demonstrate that the M-LBT mechanism can improve the total system throughput while guaranteeing fairness between LTE-U and WiFi.
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