公开(公告)号：US08903007B2

公开(公告)日：2014-12-02

申请号：US13974604

申请日：2013-08-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Rui Wang ,  Hao Yu ,  Kinnang Lau

IPC: H04B7/02 ,  H04L25/03 ,  H04B7/04

CPC classification number: H04B7/0486 ,  H04L25/03974

Abstract: Embodiments of the present disclosure disclose a method and an apparatus for determining a precoding matrix, which relate to the field of communications technologies and may improve throughput of a MIMO system and optimize overall system performance, including: determining a rank constraint of a jth transmitting end, where j=1, 2, . . . , K, and K is the total number of transmitting ends in a MIMO system; iteratively calculating an optimal precoding matrix of the jth transmitting end according to a channel matrix from the jth transmitting end to a jth receiving end, an autocorrelation matrix of interference and noise of the jth receiving end, and the rank constraint of the jth transmitting end, where the optimal precoding matrix maximizes channel capacity of a link from the jth transmitting end to the jth receiving end under a circumstance that precoding matrices of other transmitting ends do not change.

Abstract translation: 本公开的实施例公开了一种用于确定预编码矩阵的方法和装置，其涉及通信技术领域，并且可以提高MIMO系统的吞吐量并优化整个系统性能，包括：确定第j个发送端的秩约束 ，其中j = 1,2。 。 。 K和K是MIMO系统中发射端的总数; 根据第j个发送端到第j个接收端的信道矩阵，第j个接收端的干扰和噪声的自相关矩阵以及第j个发送端的秩约束迭代地计算第j个发送端的最优预编码矩阵， 其中在其他发送端的预编码矩阵不改变的情况下，最佳预编码矩阵使从第j个发送端到第j个接收端的链路的信道容量最大化。

公开(公告)号：US20170005762A1

公开(公告)日：2017-01-05

申请号：US15269191

申请日：2016-09-19

Applicant: Huawei Technologies Co., Ltd.

Inventor： Kinnang Lau ,  An Liu ,  Rongdao Yu

IPC: H04L5/00 ,  H04L12/863 ,  H04B7/04

CPC classification number: H04L5/0032 ,  H04B7/0413 ,  H04B7/0452 ,  H04B7/0456 ,  H04B7/0617 ,  H04B7/065 ,  H04L25/03 ,  H04L47/50 ,  H04W88/08

Abstract: The present invention relates to the field of communications technologies, and discloses a method, an apparatus, and a system for suppressing interference in a massive multiple-input multiple-output system, which overcome a disadvantage of sensitivity to a backhaul delay during an inter-cell interference cancellation process in an existing massive multiple-input multiple-output system. A specific embodiment of the present invention includes: obtaining channel correlation matrixes of all links, and further calculating a combined outer precoder set according to the channel correlation matrixes, where each combined outer precoder includes at least one outer precoder, and the outer precoder is a semi-unitary matrix and is not sensitive to a backhaul delay. Technical solutions of the present invention are mainly applied to a process of processing interference in a massive multiple-input multiple-output system.

Abstract translation: 本发明涉及通信技术领域，并且公开了一种用于抑制海量多输入多输出系统中的干扰的方法，装置和系统，其克服了在间隔期间的回程延迟的灵敏度的缺点， 在现有的大量多输入多输出系统中的小区干扰消除过程。 本发明的具体实施例包括：获得所有链路的信道相关矩阵，以及根据信道相关矩阵进一步计算组合外预编码器组，其中每个组合外预编码器包括至少一个外预编码器，外预编码器是 半酉矩阵，对回程延迟不敏感。 本发明的技术方案主要应用于大规模多输入多输出系统中的干扰处理过程。

公开(公告)号：US20140146903A1

公开(公告)日：2014-05-29

申请号：US14167078

申请日：2014-01-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Tingting Geng ,  Yan Chen ,  Kinnang Lau ,  Esther Koh

IPC: H04W52/02 ,  H04L5/00 ,  H04L27/26

CPC classification number: H04L27/2601 ,  H04L1/0002 ,  H04L1/0015 ,  H04L1/0026 ,  H04L1/0033 ,  H04L5/003 ,  H04W28/18 ,  H04W28/22 ,  H04W52/0206 ,  H04W52/143 ,  H04W52/20 ,  H04W52/346 ,  H04W72/0453 ,  H04W72/08 ,  Y02D70/00

Abstract: A resource allocation method and a base station which includes: acquiring, by the base station, channel state information (CSI) of a current scheduling timeslot; obtaining a compensation factor according to the CSI and a preset packet error ratio, where the compensation factor is a value corresponding to the preset packet error ratio in an inverse cumulative distribution function of a non-central chi-square random variable and a non-central parameter; replacing the CSI with the compensation factor, and determining a functional relationship between rate and power of sending data by the base station if a packet error ratio of the base station is less than or equal to the preset packet error ratio; and determining, according to the functional relationship and a generalized dynamic back pressure algorithm, the rate and total power of sending data by the base station, so as to minimize the total power of the base station.

Abstract translation: 一种资源分配方法和基站，包括：由所述基站获取当前调度时隙的信道状态信息（CSI）; 根据CSI获得补偿因子和预设分组错误率，其中补偿因子是与非中心卡方随机变量和非中心卡方随机变量的逆累积分布函数中的预设分组错误率相对应的值 参数; 如果基站的分组错误率小于或等于预设分组错误率，则确定基站发送数据的速率和功率之间的功能关系; 并根据功能关系和广义动态背压算法确定基站发送数据的速率和总功率，以使基站的总功率最小化。

公开(公告)号：US09225569B2

公开(公告)日：2015-12-29

申请号：US14167078

申请日：2014-01-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Tingting Geng ,  Yan Chen ,  Kinnang Lau ,  Chungha Koh

IPC: H04L27/26 ,  H04W72/04 ,  H04W52/14 ,  H04W52/20 ,  H04W52/02 ,  H04L1/00 ,  H04L5/00 ,  H04W52/34 ,  H04W28/18 ,  H04W28/22 ,  H04W72/08

CPC classification number: H04L27/2601 ,  H04L1/0002 ,  H04L1/0015 ,  H04L1/0026 ,  H04L1/0033 ,  H04L5/003 ,  H04W28/18 ,  H04W28/22 ,  H04W52/0206 ,  H04W52/143 ,  H04W52/20 ,  H04W52/346 ,  H04W72/0453 ,  H04W72/08 ,  Y02D70/00

Abstract: A resource allocation method and a base station which includes: acquiring, by the base station, channel state information (CSI) of a current scheduling timeslot; obtaining a compensation factor according to the CSI and a preset packet error ratio, where the compensation factor is a value corresponding to the preset packet error ratio in an inverse cumulative distribution function of a non-central chi-square random variable and a non-central parameter; replacing the CSI with the compensation factor, and determining a functional relationship between rate and power of sending data by the base station if a packet error ratio of the base station is less than or equal to the preset packet error ratio; and determining, according to the functional relationship and a generalized dynamic back pressure algorithm, the rate and total power of sending data by the base station, so as to minimize the total power of the base station.

Abstract translation: 一种资源分配方法和基站，包括：由所述基站获取当前调度时隙的信道状态信息（CSI）; 根据CSI获得补偿因子和预设分组错误率，其中补偿因子是与非中心卡方随机变量和非中心卡方随机变量的逆累积分布函数中的预设分组错误率相对应的值 参数; 如果基站的分组错误率小于或等于预设分组错误率，则确定基站发送数据的速率和功率之间的功能关系; 并根据功能关系和广义动态背压算法确定基站发送数据的速率和总功率，以使基站的总功率最小化。

公开(公告)号：US08731095B2

公开(公告)日：2014-05-20

申请号：US13760912

申请日：2013-02-06

Applicant: Huawei Technologies Co., Ltd.

Inventor： Rongdao Yu ,  Eddy Chiu ,  Kinnang Lau ,  Huang Huang

IPC: H04B7/04

CPC classification number: H04B7/0456 ,  H04B7/024 ,  H04J11/0033

Abstract: The present invention provides a data transmission method, a transmitter, and a receiver in a coordinated communication system, including: precoding, by a first transmitter, its payload data by using a first precoding matrix to obtain first precoded data; precoding, by the first transmitter, coordinated data by using a second precoding matrix to obtain second precoded data to cancel interference with the first precoded data at a receiver caused by data transmitted by another transmitter; and transmitting the first precoded data and the second precoded data after the precoding to the receiver. According to the method, the first transmitter codes its payload data by using the first precoding matrix; and codes the coordinated data by using the second precoding matrix to cancel, by using different precoding matrices, the interference with the first precoded data at the receiver caused by the data transmitted by another transmitter.

Abstract translation: 本发明提供一种协调通信系统中的数据传输方法，发射机和接收机，包括：通过使用第一预编码矩阵，由第一发射机对其有效载荷数据进行预编码，以获得第一预编码数据; 由所述第一发射机预编码，通过使用第二预编码矩阵来获得第二预编码数据，以消除由由另一发射机发送的数据引起的由接收机引起的第一预编码数据的干扰; 以及在所述预编码之后将所述第一预编码数据和所述第二预编码数据发送到所述接收机。 根据该方法，第一发射机通过使用第一预编码矩阵对其有效载荷数据进行编码; 并且通过使用第二预编码矩阵对协调数据进行编码，以通过使用不同的预编码矩阵来消除由由另一发射机发送的数据引起的接收机处的第一预编码数据的干扰。