Downlink transmit beamforming
    41.
    发明授权
    Downlink transmit beamforming 有权
    下行链路发射波束成形

    公开(公告)号:US08660105B2

    公开(公告)日:2014-02-25

    申请号:US13405535

    申请日:2012-02-27

    CPC classification number: H04B7/0413 H04B7/0617 H04B7/0643 H04L1/0681

    Abstract: A wireless network access point can operate as a closed loop MIMO device when communicating with a station that is operating as an open loop MIMO device. Transmit/receive chains in the access point are calibrated to support aggregate channel reciprocity.

    Abstract translation: 当与作为开环MIMO设备操作的站通信时,无线网络接入点可以作为闭环MIMO设备操作。 校准接入点中的发送/接收链以支持聚合信道互易。

    METHOD AND DEVICE FOR PERFORMING HIERARCHY FEEDBACK WITH SPACE INFORMATION-ASSISTED
    42.
    发明申请
    METHOD AND DEVICE FOR PERFORMING HIERARCHY FEEDBACK WITH SPACE INFORMATION-ASSISTED 审中-公开
    用于执行空间信息辅助的层次反馈的方法和装置

    公开(公告)号:US20130088981A1

    公开(公告)日:2013-04-11

    申请号:US13639393

    申请日:2010-04-06

    Applicant: Di Lv Hongwei Yang

    Inventor: Di Lv Hongwei Yang

    Abstract: A method for performing hierarchical feedback with space information assisted in a mobile communication system is provided. At the user terminal, the method comprises: measuring a space correlated matrix of multiple transmit antennas of a base station; converting a hierarchical code book in the mode of hierarchical feedback by using the spatial correlation matrix; selecting the code word from the converted hierarchical code book; and feedbacking a pre-coding matrix index corresponding to the index of the selected code word and the space correlated correlation matrix from the user terminal to the base station by using the mode of hierarchical feedback.

    Abstract translation: 提供了一种用于在移动通信系统中辅助的用空间信息执行层次反馈的方法。 在用户终端,该方法包括:测量基站的多个发射天线的空间相关矩阵; 通过使用空间相关矩阵转换分级反馈模式的分级代码本; 从转换的分层代码簿中选择代码字; 并且通过使用层次反馈的模式将与所选码字的索引相对应的预编码矩阵索引和空间相关相关矩阵从用户终端反馈到基站。

    Differential Encoding With Adaptive Resetting
    43.
    发明申请
    Differential Encoding With Adaptive Resetting 审中-公开
    具有自适应复位的差分编码

    公开(公告)号:US20120066564A1

    公开(公告)日:2012-03-15

    申请号:US12806208

    申请日:2009-09-02

    CPC classification number: H04L1/0681

    Abstract: To feedback MIMO channel conditions, a codeword from a codebook is selected. To reduce signalling, the codewords are organized into codeword subsets. The receiver signals an index of a codeword into a current 5 codeword subset previously made known to the transmitter. The current codeword subset is adaptively selected based on a threshold criterion. For example, if the best codeword from the current codeword subset is not sufficiently similar to the best codeword in the full codebook, a switch in the codeword subset is made.

    Abstract translation: 为了反馈MIMO信道条件,选择来自码本的码字。 为了减少信令,码字被组织成码字子集。 接收机将码字的索引发送到先前对发射机已知的当前5码字子集。 基于阈值标准自适应地选择当前码字子集。 例如,如果来自当前码字子集的最佳码字不足以与完整码本中的最佳码字相似,则在码字子集中进行切换。

    Downlink transmit beamforming
    44.
    发明授权
    Downlink transmit beamforming 有权
    下行链路发射波束成形

    公开(公告)号:US07719993B2

    公开(公告)日:2010-05-18

    申请号:US11027300

    申请日:2004-12-30

    CPC classification number: H04B7/0413 H04B7/0617 H04B7/0643 H04L1/0681

    Abstract: A wireless network access point can operate as a closed loop MIMO device when communicating with a station that is operating as an open loop MIMO device. Transmit/receive chains in the access point are calibrated to support aggregate channel reciprocity.

    Abstract translation: 当与作为开环MIMO设备操作的站通信时,无线网络接入点可以作为闭环MIMO设备操作。 校准接入点中的发送/接收链以支持聚合信道互易。

    PLCP 헤더 전송 모드 지시 방법 및 장치
    45.
    发明申请
    PLCP 헤더 전송 모드 지시 방법 및 장치 审中-公开
    用于指示PLCP头传输模式的方法和装置

    公开(公告)号:WO2013069918A1

    公开(公告)日:2013-05-16

    申请号:PCT/KR2012/009015

    申请日:2012-10-31

    Abstract: PLCP 헤더 전송 모드 지시 방법 및 장치가 개시되어 있다. 데이터 프레임의 physical layer convergence protocol(PLCP) 헤더 생성 방법은 수신된 프레임의 스크램블링 시퀀스(scrambling sequence) 또는 수신된 프레임에 포함된 information element를 기초로 PLCP 헤더 모드 정보를 복조하는 단계와 PCLP 헤더 모드 정보를 기초로 생성된 PLCP 헤더를 포함하는 데이터 프레임을 생성하는 단계를 포함할 수 있다. PLCP 헤더 모드 정보는 STBC 모드 지시자(space time block coding mode indication), GI 모드 지시자(guard interval mode indication), repetition mode 지시자(repetition mode indication) 중 적어도 하나의 지시자를 포함할 수 있다. 채널 상황에 적응적으로 PCLP 헤더의 전송 모드를 결정하여 데이터 전송 효율을 높일 수 있다.

    Abstract translation: 公开了用于指示PLCP报头传输模式的方法和装置。 一种用于生成数据帧的物理层汇聚协议(PLCP)的方法可以包括以下步骤:基于所接收的帧的加扰序列或包括在接收帧中的信息元素来解调PLCP头模式信息; 以及生成包括基于PCLP头模式信息生成的PLCP头的数据帧。 PLCP头模式信息包括来自空间时间块编码模式指示,保护间隔模式指示和重复模式指示的至少一个指示。 本发明能够通过将PCLP头的传输模式自适应地确定到信道情况来提高数据传输效率。

    链路自适应反馈方法和发送端设备

    公开(公告)号:WO2012163158A1

    公开(公告)日:2012-12-06

    申请号:PCT/CN2012/073000

    申请日:2012-03-26

    Inventor: 李云波 杨讯 罗毅

    Abstract: 本发明实施例提供一种链路自适应反馈方法,包括:发送端设备接收通信对端发送的链路自适应反馈帧,所述链路自适应反馈帧包括调制编码请求序列标识符MSI,该MSI包括3个比特,该MSI用于向所述通信对端发出链路自适应请求,并且该MSI还用于指示空时编码类型指示信息;所述发送端设备根据链路自适应反馈帧进行链路自适应处理,其中所述发送端设备根据所述空时编码类型指示信息确定所述链路自适应反馈帧所针对的数据帧对空时编码的使用信息,并根据所述使用信息选择所述发送端设备发送数据帧时所采用的空时流、带宽和调制编码方式。

    数据传输方法、系统、发射机和接收机

    公开(公告)号:WO2013040741A1

    公开(公告)日:2013-03-28

    申请号:PCT/CN2011/079820

    申请日:2011-09-19

    CPC classification number: H04L1/0606 H04L1/0681

    Abstract: 一种数据传输方法、系统、发射机和接收机。该方法包括:发射机选择相位旋转矩阵和/或预编码矩阵;其中,该发射机以资源块为粒度来选择该相位旋转矩阵和/或预编码矩阵;该发射机将至少一组空频块码(SFBC)数据流通过选择的相位旋转矩阵、或者通过预编码矩阵、或者一次通过相位旋转矩阵和预编码矩阵映射到该发射机的天线端口;通过与该天线端口对应的天线向接收机发送。通过本发明实施例,发射机可将SFBC数据流经过矩阵D和/或预编码矩阵W向接收机发送,并以资源块RB为粒度对矩阵D、预编码矩阵W进行选择,以支持解调参考信号(DM-RS)解调;不需要向接收机进行预编码矩阵索引(PMI)反馈,对于不支持用户反馈或者PMI反馈不准确的场景也适用。

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