【摘要】 可重构智能表面（RIS）能够动态调控无线传播环境，是第六代（6G）移动通信的关键技术之一。在RIS辅助的蜂窝通信系统中构造开放阴影区域和封闭阴影区域两种盲区，通过搭建系统级仿真平台对RIS对于两种场景的覆盖增强效果进行了系统级仿真测试。仿真结果表明，RIS能够显著增强阴影区域的覆盖性能，并且对封闭阴影区域的增强效果高于开放阴影区域。由仿真结果可知，相比于开放阴影区域，RIS更适用于封闭阴影区域的覆盖增强。更多还原

【Abstract】 Reconfigurable intelligent surfaces (RIS) are capable of dynamically controlling the wireless propagation environment and are one of the key technologies for sixth-generation (6G) mobile communications.In RIS-assisted cellular communication systems,two types of blind spots—open shadow regions and closed shadow regions—are constructed.A system-level simulation platform is built to perform coverage enhancement testing for both scenarios.Simulation results show that RIS significantly improves the coverage performance of shadowed areas,with the enhancement effect in closed shadow regions being higher than in open shadow regions.The results indicate that RIS is more suitable for enhancing coverage in closed shadow regions compared to open shadow regions.更多还原