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    • 1. 发明公开
    • METHOD AND APPARATUS FOR EFFICIENT PRECODING INFORMATION VALIDATION FOR MIMO COMMUNICATIONS
    • 用于MIMO通信的有效的预先信息验证的方法和设备
    • EP3313013A1
    • 2018-04-25
    • EP17205787.9
    • 2008-04-21
    • InterDigital Technology Corporation
    • PAN, Kyle Jung-lin
    • H04L1/00H04B7/06H04L25/03
    • H04B7/0417H04B7/0652H04B7/0665H04L1/0025H04L1/0029H04L1/0072H04L1/1671H04L25/03343H04L2025/03414H04L2025/03426H04L2025/03802
    • A Wireless Transmit/Receive Unit, WTRU, and a method of decoding data received by a Wireless Transmit/Receive Unit, WTRU, are disclosed. The method comprises sending, by the WTRU to an evolved Node B, eNB, (1) a rank indicator indicating a rank of greater than one, the rank of greater than one being suggested by the WTRU for communication with the WTRU and (2) a codebook value representing a multi-column precoding matrix, as feedback. Furthermore, control signaling including a multi-bit indicator is received by the WTRU. On condition that the multi-bit indicator corresponds to a first value which indicates to use the rank and the multi-column precoding matrix represented by the codebook value associated with the feedback, determining, by the WTRU, precoding information based on the multi-column precoding matrix represented by the codebook value sent in the feedback to decode the data. On condition that the multi-bit indicator corresponds to a second value which indicates to use a rank of one and a first column of the multi-column precoding matrix represented by the codebook value sent in the feedback, determining, by the WTRU, the precoding information based on the first column of the multi-column precoding matrix represented by the codebook value sent in the feedback to decode the data. On condition that the multi-bit indicator corresponds to a third value which indicates to use the rank of one and a second column of the multi-column precoding matrix represented by the codebook value sent in the feedback, determining, by the WTRU, the precoding information based on the second column of the multi-column precoding matrix represented by the codebook value sent in the feedback to decode the data. The received data are then decoded by the WTRU using the determined precoding information.
    • 公开了一种无线发射/接收单元,WTRU以及解码由无线发射/接收单元WTRU接收的数据的方法。 该方法包括由WTRU向演进节点B eNB发送(1)指示大于1的秩的秩指示符,WTRU建议大于1的秩用于与WTRU进行通信,以及(2) 代表多列预编码矩阵的代码本值作为反馈。 此外,WTRU接收包括多比特指示符的控制信令。 在多比特指示符对应于指示使用秩的第一值和由与反馈相关联的码本值表示的多列预编码矩阵的情况下,由WTRU确定基于多列的预编码信息 由反馈中发送的码本值表示的预编码矩阵对数据进行解码。 在多比特指示符对应于指示使用在反馈中发送的码本值表示的多列预编码矩阵的一列和第一列的第二值的情况下,由WTRU确定预编码 基于由在反馈中发送的码本值表示的多列预编码矩阵的第一列的信息来解码数据。 在多比特指示符对应于指示使用在反馈中发送的码本值表示的多列预编码矩阵的一列和第二列的第三值的情况下,由WTRU确定预编码 基于由在反馈中发送的码本值表示的多列预编码矩阵的第二列的信息来解码数据。 接收的数据然后由WTRU使用所确定的预编码信息来解码。