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    POWER ALLOCATION AND PRECODING MATRIX COMPUTATION METHOD IN A WIRELESS COMMUNICATION SYSTEM
    3.
    发明申请
    POWER ALLOCATION AND PRECODING MATRIX COMPUTATION METHOD IN A WIRELESS COMMUNICATION SYSTEM 审中-公开

    公开(公告)号：US20180139703A1

    公开(公告)日：2018-05-17

    申请号：US15576709

    申请日：2016-06-28

    申请人： Dengkui Zhu ,  Boyu Li ,  Ping Liang

    发明人： Dengkui Zhu ,  Boyu Li ,  Ping Liang

    IPC分类号： H04W52/24 ,  H04W72/04 ,  H04B7/0452 ,  H04W52/34

    摘要： This invention presents methods for power allocation for each data stream on each transmitting antennas in MU-MIMO wireless communication systems comprising the BS computing the temporary beamforming matrix, constructing special matrices and vectors with the maximum transmitting power on each antenna, the allocated power to each data stream, the channel quality of each data stream, and the amplitude of each element of the temporary beamforming matrix, calculating the power allocated to each data stream on each antenna with the calculated special matrices and vectors, and adjusting each element of the temporary beamforming matrix to obtain the final beamforming matrix.

    Coordinating method and device for multi-input multi-output precoding of downlink multi-base station
    4.
    发明授权
    Coordinating method and device for multi-input multi-output precoding of downlink multi-base station 有权
    下行多基站多输入多输出预编码的协调方法和装置

    公开(公告)号：US09077404B2

    公开(公告)日：2015-07-07

    申请号：US13989753

    申请日：2011-06-21

    申请人： Xiaoshan Jia ,  Dengkui Zhu ,  Yanfeng Guan ,  Dihao Ning ,  Zhaohua Lu ,  Huahua Xiao ,  Xiaoxiao Jiao

    发明人： Xiaoshan Jia ,  Dengkui Zhu ,  Yanfeng Guan ,  Dihao Ning ,  Zhaohua Lu ,  Huahua Xiao ,  Xiaoxiao Jiao

    IPC分类号： H04B7/04 ,  H04B7/02 ,  H04J11/00 ,  H04L5/00 ,  H04B7/06 ,  H04W72/08

    CPC分类号： H04B7/0456 ,  H04B7/024 ,  H04B7/0639 ,  H04J11/0059 ,  H04L5/0023 ,  H04L5/0035 ,  H04L5/0037 ,  H04L5/0073 ,  H04L5/0092 ,  H04W72/08

    摘要： The disclosure discloses a method for coordinating downlink MIMO precoding among multiple BSs, including that: each BS first performs independent resource allocation to allocate resources to users of each BS, then receives PMI information fed back by a time-frequency resource block occupying MS in a respective cell, wherein the PMI information includes optimal and recommended or restrained PMIs corresponding to an MS; adjacent BSs perform information interaction with each other to acquire PMI information of MSs occupying the same time-frequency resource block in adjacent cells; and it is determined whether there is any conflict between MSs occupying the same time-frequency resource block in adjacent cells according to PMI information fed back by an MS in the current cell and interaction information from adjacent BSs, and a new PM is generated in a corresponding manner. The disclosure also discloses a device for implementing the method. The coordinating method and device of the disclosure can reduce or eliminate interference among users at a border through downlink resource allocation and precoding coordination between adjacent cells, thereby enhancing performance of the entire network.

    摘要翻译： 本公开公开了一种用于协调多个BS之间的下行MIMO预编码的方法，包括：每个BS首先执行独立的资源分配以向每个BS的用户分配资源，然后接收由占用MS的时间 - 频率资源块反馈的PMI信息 其中所述PMI信息包括对应于MS的最佳和推荐或约束的PMI; 相邻BS执行彼此的信息交互以获取在相邻小区中占据相同时间 - 频率资源块的MS的PMI信息; 并且根据当前小区中的MS反馈的PMI信息和来自相邻BS的交互信息，确定在相邻小区中占用相同时间 - 频率资源块的MS之间是否存在冲突，并且在一个新的PM中生成新的PM 相应的方式。 本公开还公开了一种用于实现该方法的装置。 本公开的协调方法和装置可以通过下行链路资源分配和相邻小区之间的预编码协调来减少或消除边界用户之间的干扰，从而提高整个网络的性能。

    Method for solving non-controllability of terminal's power spectrum density in OFDMA system
    5.
    发明授权
    Method for solving non-controllability of terminal's power spectrum density in OFDMA system 有权
    解决OFDMA系统终端功率谱密度不可控性的方法

    公开(公告)号：US08553642B2

    公开(公告)日：2013-10-08

    申请号：US12667799

    申请日：2007-12-03

    申请人： Qinji Li ,  Gang Qiu ,  Shaogui Lu ,  Ying Liu ,  Xiangyu Liu ,  Dengkui Zhu

    发明人： Qinji Li ,  Gang Qiu ,  Shaogui Lu ,  Ying Liu ,  Xiangyu Liu ,  Dengkui Zhu

    IPC分类号： H04W72/04

    CPC分类号： H04L27/0008 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0015 ,  H04L5/0007 ,  H04L5/0046 ,  H04L5/006 ,  H04L27/0012 ,  H04L27/2618 ,  H04W52/42

    摘要： The present invention discloses a method for solving non-controllability of terminal's power spectrum density in OFDMA system. It considers the problem of non-controllability of terminal's carrier transmit power resulting from the indeterminacy of carrier number allocation to the terminal in the OFDMA system which is solved by introducing the maximum carrier number that can be allocated to the terminal by combing AMC, the power control and the dispatching. By applying the present invention, the carrier power of the terminal can be best controlled by the system, it is most possible for the terminal to transmit power on carrier completely according to a set value, while it is greatly reduced the possibility that the terminal's power spectrum density is suddenly decreased out of control, which is caused by the summation of carrier powers in the set value exceeding the maximum total transmit power. Moreover, it is avoided occurrence of a large amount of error codes in that condition and the waste of power resources resulting from the excessive restriction on the carrier power.

    摘要翻译： 本发明公开了一种解决OFDMA系统中终端功率谱密度不可控性的方法。 它考虑到OFDMA系统中对终端的载波号分配不确定性导致的终端载波发射功率的不可控性问题，通过引入可以通过组合AMC分配给终端的最大载波号解决，功率 控制和调度。 通过应用本发明，终端的载波功率可以由系统最好地控制，终端最可能根据设定值完全发送载波上的功率，同时大大降低了终端功率的可能性 频谱密度突然减少，这是由设定值中的载波功率的总和超过最大总发射功率引起的。 此外，避免了在这种情况下出现大量的错误代码以及由于对载波功率的过度限制而导致的功率资源的浪费。

    Method and System for Transmitting Data Using Collaborative Multiple Input Multiple Output Beamforming
    6.
    发明申请
    Method and System for Transmitting Data Using Collaborative Multiple Input Multiple Output Beamforming 有权
    使用协同多输入多输出波束形成传输数据的方法和系统

    公开(公告)号：US20120281781A1

    公开(公告)日：2012-11-08

    申请号：US13522456

    申请日：2010-01-27

    申请人： Huahua Xiao ,  Dengkui Zhu ,  Zhaohua Lu ,  Kun Liu

    发明人： Huahua Xiao ,  Dengkui Zhu ,  Zhaohua Lu ,  Kun Liu

    IPC分类号： H04B7/02 ,  H04L25/03 ,  H04L27/00

    CPC分类号： H04B7/024 ,  H04B7/0434 ,  H04B7/0465 ,  H04B7/0617 ,  H04B7/0632 ,  H04B7/0636 ,  H04B7/0689 ,  H04B7/0697 ,  H04B7/10 ,  H04L1/0001 ,  H04L1/0026

    摘要： The present invention discloses a method and a system for transmitting data using the collaborative multiple input multiple output (MIMO) beamforming. The method comprises: selecting an MIMO mode according to channel quality information (CQI) (S502); performing the MIMO encoding on a data stream according to the selected MIMO mode, and distributing the encoded data stream to a plurality of transmitting ends which are mutual collaborative (S504); and transmitting, by the plurality of transmitting ends, the encoded data stream (S506). The present invention solves the problem in the relevant art of reducing the system performance and the flexibility, which is caused by adopting the fixed MIMO mode when the system carries out the encoding and the transmission, which is capable of improving the system performance.

    摘要翻译： 本发明公开了一种使用协同多输入多输出（MIMO）波束形成来发送数据的方法和系统。 该方法包括：根据信道质量信息（CQI）选择MIMO模式（S502）; 根据所选择的MIMO模式对数据流执行MIMO编码，并将编码数据流分配到相互协作的多个发送端（S504）; 以及由所述多个发送端发送所述编码数据流（S506）。 本发明解决了当系统进行编码和传输时采用固定MIMO模式，从而提高系统性能的相关技术中降低系统性能和灵活性的问题。