公开(公告)号：US09515715B2

公开(公告)日：2016-12-06

申请号：US14979388

申请日：2015-12-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yongping Zhang ,  Yue Wang ,  Yu Liu ,  Guanhong Lai

IPC: H04B7/06 ,  H04L1/00 ,  H04L5/00 ,  H04L25/02

CPC classification number: H04B7/0626 ,  H04L1/0026 ,  H04L1/0027 ,  H04L5/0057 ,  H04L25/0224

Abstract: The present invention discloses a channel state information (CSI) feedback method. The CSI feedback method includes: receiving, by user equipment (UE), a reference signal broadcast by a base station; performing channel estimation on a radio channel between the base station and the UE by using the reference signal, to obtain CSI and a channel quality parameter; adjusting the channel quality parameter according to a channel quality weight parameter, to obtain a channel statistic quality parameter; and when the channel statistic quality parameter exceeds a channel quality threshold, feeding back the CSI to the base station. In the present invention, because a channel quality parameter is dynamically adjusted by using a channel quality weight parameter, and it is selected, according to a result of comparing an adjusted channel statistic quality parameter with a channel quality threshold, whether to report CSI. UEs in a system can be evenly scheduled.

Abstract translation: 本发明公开了一种信道状态信息（CSI）反馈方法。 CSI反馈方法包括：由用户设备（UE）接收由基站广播的参考信号; 通过使用参考信号在基站和UE之间的无线电信道上执行信道估计，以获得CSI和信道质量参数; 根据信道质量权重参数调整信道质量参数，获得信道统计质量参数; 并且当信道统计质量参数超过信道质量阈值时，将CSI反馈到基站。 在本发明中，由于通过使用信道质量权重参数动态地调整信道质量参数，并且根据将调整后的信道统计质量参数与信道质量阈值进行比较的结果来选择是否报告CSI。 可以均匀地调度系统中的UE。