WIDEBAND AMPLITUDE BASED CODEBOOK SUBSET RESTRICTION

Implementations of the present disclosure relate to methods and devices for codebook subset restriction. In example implementations, a method implemented by a network device in a communication systemis provided. The method includes determining, based on a first wideband (WB) amplitude quantization set including a first number of power levels, a second WB amplitude quantization set including a second number of power levels, the second number being less than the first number. The method also includes transmitting, to a terminal device served by the network device, an indication of the second WBamplitude quantization set. The method further includes receiving channel state information (CSI) from the terminal device, the CSI being determined by the terminal device at least based on the second WB amplitude quantization set. 本公开的实现涉及用于码本子集限制的方法和设备。在示例实现中，提供了一种由通信系统中的网络设备实现的方法。该方法包括基于包括第一数目的功率电平的第一宽带(WB)幅度量化集合来确定包括第二数目的功率电平的第二WB幅度量化集合，第二数目小于第一数目。该方法还包括向由网络设备服务的终端设备发送第二WB幅度量化集合的指示。该方法还包括从终端设备接收信道状态信息(CSI)，该CSI由终端设备至少