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    • 2. 发明申请
    • METHOD, DEVICE AND SYSTEM FOR TRANSMITTING CHANNEL STATE INFORMATION
    • 用于发送信道状态信息的方法,装置和系统
    • WO2011157182A2
    • 2011-12-22
    • PCT/CN2011075336
    • 2011-06-03
    • HUAWEI TECH CO LTDNI JUNZHANG JIAYINXIA LIANGWANG YI
    • NI JUNZHANG JIAYINXIA LIANGWANG YI
    • H04W72/12
    • H04B7/0456H04B7/0478H04B7/0482H04B7/061H04B7/0626H04B7/0639H04L5/0048
    • A method, device and system for transmitting channel state information (CSI) are provided by the embodiments of the invention. The method for transmitting the channel state information comprises: setting bit number used for quantizing a relative receiving power value; transmitting the bit number to a user equipment (UE); receiving the receiving power codebook index value; determining a receiving power codebook element corresponding to the receiving power codebook index value; processing signals according to the corresponding receiving power codebook element. The other method for transmitting the channel state information comprises: receiving the bit number used for quantizing the relative receiving power value; selecting a receiving power codebook index value from multiple receiving power codebook index values; transmitting the selected receiving power codebook index value to a base station. According to the solution, the feedback overhead is reduced, the effect of the CSI feedback is improved and the antenna selection is realized, so the whole system performance is improved; meanwhile, the precoding codebook of the existing centralized antenna system can be multiplexed and the complexity of the system is reduced.
    • 本发明的实施例提供了一种用于发送信道状态信息(CSI)的方法,设备和系统。 用于发送信道状态信息的方法包括:设置用于量化相对接收功率值的比特数; 将所述比特数发送给用户设备(UE); 接收接收功率码本索引值; 确定与所述接收功率码本索引值相对应的接收功率码本元素; 根据相应的接收功率码本元素处理信号。 用于发送信道状态信息的另一种方法包括:接收用于量化相对接收功率值的比特数; 从多个接收功率码本索引值中选择接收功率码本索引值; 将所选择的接收功率码本索引值发送到基站。 根据解决方案,降低了反馈开销,改善了CSI反馈的效果,实现了天线选择,提高了整个系统的性能; 同时,现有的集中式天线系统的预编码码书可以多路复用,降低了系统的复杂度。