| 动态信道切换及静默策略下的LTE-U共存方案 |
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| 引用本文： | 申滨,赵思聪.动态信道切换及静默策略下的LTE-U共存方案[J].北京邮电大学学报,2017,40(4):16-22. |
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| 作者姓名： | 申滨 赵思聪 |
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| 作者单位： | 重庆邮电大学移动通信技术重点实验室,重庆,400065;重庆邮电大学移动通信技术重点实验室,重庆,400065 |
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| 基金项目： | 国家科技重大专项项目，重庆市自然科学基金项目 |
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| 摘 要： | 提出了一种针对非授权频段的长期演进(LTE-U)系统在5 GHz非授权频段与WIFI系统共存的方案.该方案基于先听后说(LBT)信道接入机制,通过引入动态信道切换技术,有效避免了因LTE-U系统长时间占用同一信道而对无线保真(WIFI)系统造成的干扰.在此基础上,对LBT机制中的静默时长进行了优化,以进一步提升LTE-U与WIFI系统共存的效率.理论分析和实验结果表明,所提方案可使LTE-U与WIFI在同频段和谐共存,并取得较好的系统性能.
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| 关 键 词： | 非授权频段的长期演进 先听后说 共存方案 信道接入机制 |
A LTE-U Coexistence Scheme Based on Dynamic Channel Switching and Muting Strategy |
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| Abstract: | Based on listen before talk (LBT) channel access mechanism,a scheme allowing the LTE-U system coexistence with WIFI system in 5 GHz unlicensed band was proposed.At the same time,by introducing the dynamic channel switching technology,it is effective to avoid the interference to the WIFI system caused by the LTE-U system which occupies the same channel for a long time.On this basis,the silence length of the LBT mechanism is optimized to further enhance the coexistence efficiency with the WIFI system.Experiments show that the proposed scheme can make LTE-U and WIFI coexist well in the same frequency band and achieve a better system performance. |
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| Keywords: | LTE-unlicensed listen before talk coexistence scheme channel access mechanism |
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