一种新的UE非周期性上报CSI方案  

A Novel UE Aperiodic Reporting CSI Scheme

作　　者：潘涛 汪毅峰 PAN Tao;WANG Yifeng(Nokia Shanghai Bell Co.,Ltd.,Nanjing Jiangsu 210037,China)

机构地区：[1]上海诺基亚贝尔股份有限公司,江苏南京210037

出　　处：《通信技术》2022年第2期213-217,共5页Communications Technology

摘　　要：真实的通信场景下用户设备(User Equipment,UE)锁相环(Phase-Locked Loop,PLL)泄漏引起的干扰很难避免,导致UE只能上报较低信道质量指示(Channel Quality Indicator,CQI)值,演进型基站(envolved NodeB,eNB)收到上报信息后选择与之匹配的较低调制编码策略(Modulation and coding Scheme,MCS),从而导致下行信道整体吞吐量下降。为了解决这个问题,提出了一种新的在信道状态信息(Channel State Information,CSI)消息中增加数据字段的上报方案。通过新增的数据字段使得UE更准确地向eNB汇报下行信道特性,从而降低对下行信道整体吞吐量的影响。本方法适用于非周期性的CSI上报场景。The interference caused by UE(User Equipment)PLL(Phase-Locked Loop)leakage is difficult to avoid in real communication scenarios,so that UE can only report a lower CQI(Channel Quality Indicator)value.After receiving the reported information,the eNB(envolved NodeB)selects a matching lower MCS(Modulation and coding Scheme),thereby reducing the overall throughput of the downlink channel.In order to solve this problem,a novel reporting scheme of adding a data field to a CSI(Channel State Information)message is proposed.The newly added data field enables the UE to report the characteristics of the downlink channel to the eNB more accurately,thus reducing the impact on the overall throughput of the downlink channel.This method is suitable for aperiodic CSI reporting scenarios.

关 键 词：信道质量指示 信道状态信息 非周期性 用户设备 锁相环 

分 类 号：TN929.53[电子电信—通信与信息系统]