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    • 5. 发明授权
    • Method and user equipment for feeding back channel state information
    • 用于反馈信道状态信息的方法和用户设备
    • US08929476B2
    • 2015-01-06
    • US13979406
    • 2011-12-02
    • Bo DaiYijian ChenJun XuYunfeng SunJunfeng Zhang
    • Bo DaiYijian ChenJun XuYunfeng SunJunfeng Zhang
    • H04B7/02H04B7/04H04L1/00H04L5/00H04L1/06
    • H04B7/0456H04L1/0023H04L1/0031H04L1/06H04L5/0023H04L5/0048H04L5/0057
    • The present document provides a method for feeding back channel state information and a user equipment. The method includes: a user equipment determining a second parameter y of a feedback mode according to the number of Channel-State Information-reference signals (CSI-RS) ports configured by a high layer signaling or according to the number of CSI-RS ports and indication information indicating whether to feed back a pre-coding matrix indicator (PMI) and rank indicator (RI); the user equipment determining the feedback mode according to a transmission mode configured by the high layer signaling, a first parameter x of the feedback mode and the second parameter y of the feedback mode; and the user equipment feeding back the channel state information according to the determined feedback mode. The present document improves the system flexibility and performance and reduces the feedback overhead.
    • 本文提供了一种用于反馈信道状态信息和用户设备的方法。 该方法包括:用户设备根据由高层信令配置的信道状态信息参考信号(CSI-RS)端口的数量或根据CSI-RS端口的数量确定反馈模式的第二参数y 以及指示是否反馈预编码矩阵指示符(PMI)和秩指示符(RI)的指示信息; 用户设备根据由高层信令配置的传输模式,反馈模式的第一参数x和反馈模式的第二参数y来确定反馈模式; 并且用户设备根据确定的反馈模式反馈信道状态信息。 本文档提高了系统的灵活性和性能,并减少了反馈开销。