METHOD AND APPARATUS FOR PERFORMING MULTIPLE-INPUT MULTIPLE-OUTPUT WIRELESS COMMUNICATIONS
    7.
    发明申请
    METHOD AND APPARATUS FOR PERFORMING MULTIPLE-INPUT MULTIPLE-OUTPUT WIRELESS COMMUNICATIONS 审中-公开
    用于执行多输入多输出无线通信的方法和装置

    公开(公告)号:US20090323849A1

    公开(公告)日:2009-12-31

    申请号:US12491672

    申请日:2009-06-25

    IPC分类号: H03M7/00 H04L27/00 H04L1/02

    摘要: A method and an apparatus for performing multiple-input multiple-output (MIMO) wireless communications are disclosed. A Node-B may receive an index to a pre-coding matrix in a single user MIMO (SU-MIMO) pre-coding codebook from wireless transmit/receive units (WTRUs) and adaptively perform one of SU-MIMO or multi-user MIMO (MU-MIMO) based on a predetermined criterion. Channel information for performing MU-MIMO may be obtained based on the pre-coding matrix of the SU-MIMO pre-coding codebook. A rank requested by the WTRU may be overridden if the unitary MU-MIMO codebook is a subset of the SU-MIMO pre-coding codebook. If not, a MU-MIMO pre-coding matrix with a largest correlation to the pre-coding matrix may be selected. A WTRU may send a pre-coding matrix for transmission to the WTRU along with a preferred interference matrix. A WTRU may send rank information and multiple right singular vectors for MU-MIMO.

    摘要翻译: 公开了一种用于执行多输入多输出(MIMO)无线通信的方法和装置。 节点B可以从无线发射/接收单元(WTRU)接收单用户MIMO(SU-MIMO)预编码码本中的预编码矩阵的索引,并且自适应地执行SU-MIMO或多用户MIMO (MU-MIMO)。 可以基于SU-MIMO预编码码本的预编码矩阵来获得用于执行MU-MIMO的信道信息。 如果单一MU-MIMO码本是SU-MIMO预编码码本的子集,那么由WTRU请求的等级可以被覆盖。 如果不是,则可以选择与预编码矩阵具有最大相关性的MU-MIMO预编码矩阵。 WTRU可以发送用于传输到WTRU的预编码矩阵以及优选的干扰矩阵。 WTRU可以发送用于MU-MIMO的秩信息和多个右奇异向量。