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公开(公告)号：US20170288902A1
公开(公告)日：2017-10-05
申请号：US15629181
申请日：2017-06-21
Applicant: Huawei Technologies Co., Ltd.
Inventor： Fredrik Rusek , Sha Hu
CPC classification number: H04L25/03203 , H04B17/336 , H04L1/0042 , H04L25/03968 , H04L27/3461 , H04M1/72519 , H04W76/25
Abstract: An apparatus including a processor configured to receive a digital communication signal having a plurality of transmitted layers. The processor is configured to determine an estimated channel matrix based on the digital communication signal, determine a first estimated transmitted symbol vector and a mean square error matrix based on a linear analysis of the received digital communication signal. A first set of bit LLR are determined based on a LMMSE type detector and a second set of bit LLR are determined based on a novel simplified tree search process. The two sets of bit LLR are then combined and used to detect the data in the received communication signal. The simplified tree search process uses a specially formed channel shortening process to determine a set of shortened channel correlation matrices that allow the second set of bit LLR to be determined using an alternative marginalized tree search process.
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公开(公告)号：US12219572B2
公开(公告)日：2025-02-04
申请号：US17670100
申请日：2022-02-11
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Wenquan Hu , Bengt Lindoff , Sha Hu , Yongxia Lyu
IPC: H04W72/12 , H04L1/1812 , H04W72/23
Abstract: A communication method includes: obtains a first DAI in a first downlink control channel associated with transmission of a first transport block, wherein the first DAI indicates a first scheduling assignment for the first transport block; obtains a second DAI in a second downlink control channel associated with transmission of a second transport block, wherein the second DAI indicates a second scheduling assignment for the second transport block; determines that at least one value of the second DAI is an assigned value identical to a value of the first DAI.
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公开(公告)号：US09674003B2
公开(公告)日：2017-06-06
申请号：US14457877
申请日：2014-08-12
Applicant: Huawei Technologies Co., Ltd.
Inventor： Shashi Kant , Fredrik Rusek , Gengshi Wu , Basuki Endah Priyanto , Sha Hu , Jianjun Chen
CPC classification number: H04L25/0204 , H04B7/0413 , H04L1/0017 , H04L1/1835 , H04L25/025 , H04L25/0256 , H04L25/03898 , H04L25/03949 , H04L25/067 , H04W72/085
Abstract: Receiver and method in a receiver, for iterative channel estimation and data decoding of signals received from a radio network node, located in a wireless communication network. The method comprises detecting a signal of the radio network node, performing channel estimation of the detected signal, based on iterative application of a Space Alternating Generalized Expectation and maximization, SAGE, algorithm, determining a channel/link quality, based on the performed channel estimation and the estimated channel parameters, selecting Multiple-Input and Multiple-Output, MIMO, detector, based on the determined channel quality, determining to enable and/or disable, respectively, soft-Iterative Channel Estimation, soft-ICE, based on the determined channel quality, and iterating the performed channel estimation for a predetermined number of times.
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公开(公告)号：US09991976B2
公开(公告)日：2018-06-05
申请号：US15618275
申请日：2017-06-09
Applicant: Huawei Technologies Co., Ltd.
Inventor： Sha Hu , Fredrik Rusek , Jianjun Chen
IPC: H04B7/0456 , H04B17/336 , H04L25/02 , H04B17/327 , H04L1/00
CPC classification number: H04B17/336 , H04B7/0413 , H04B7/0456 , H04B17/327 , H04L1/0054 , H04L25/021 , H04L25/0226 , H04L25/0246 , H04L25/03898 , H04L25/03968 , H04L2025/03426 , Y02D70/00 , Y02D70/1262 , Y02D70/1264 , Y02D70/142 , Y02D70/146 , Y02D70/444
Abstract: An apparatus including a processor configured to receive a digital communication signal, wherein the digital communication signal includes a common reference signal and transmitted data. The processor determines a first interfering channel matrix for a first interfering cell based on a channel estimation of the common reference signal, and estimates a first power offset ratio and a first effective pre-coding matrix for the first interfering cell by evaluating a maximum likelihood metric, wherein the maximum likelihood metric is based on a first interfering channel correlation. The processor then reconstructs a channel covariance matrix based on the estimated first power offset ratio and the first effective pre-coding matrix and detects the transmitted data based on the reconstructed channel covariance matrix.
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公开(公告)号：US20150146546A1
公开(公告)日：2015-05-28
申请号：US14087825
申请日：2013-11-22
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Shashi Kant , Fredrik Rusek , Sha Hu , Basuki Endah Priyanto
CPC classification number: H04B7/0413 , H04B7/0848
Abstract: UE (120) and method (500) in a UE (120), for MIMO detection of signals received from a radio network node (110), comprised in a wireless communication network (100). The method (500) comprises receiving (501) a signal of the radio network node (110). The method (500) also comprises establishing (510) a list of hypotheses candidate vector. Furthermore, the method (500) in addition comprises computing (511) path metrics of the established (510) list of hypotheses candidate vector, and thereby computing LLRs utilising the computed path metrics for achieving MIMO detection.
Abstract translation: UE（120）中的UE（120）和方法（500），用于对包括在无线通信网络（100）中的无线电网络节点（110）接收的信号进行MIMO检测。 方法（500）包括接收（501）无线电网络节点（110）的信号。 方法（500）还包括建立（510）假设候选向量的列表。 此外，方法（500）另外包括计算（511）所建立的（510）假设候选向量列表的路径量度，从而利用计算出的路径度量来计算LLR以实现MIMO检测。
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Patent Agency Ranking
6.发明授权公开(公告)号：US09485002B2
公开(公告)日：2016-11-01
申请号：US14068607
申请日：2013-10-31
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Fredrik Rusek , Basuki Endah Priyanto , Sha Hu , Gengshi Wu , Shashi Kant
CPC classification number: H04B7/0837 , H04B7/0413 , H04L25/03171 , H04L25/0328 , H04L25/03821 , H04L25/03968 , H04L27/2691 , H04W28/04
Abstract: The present invention relates to an equalizing method in a receiver node of a cellular wireless communication system, the method comprising: receiving at least one radio signal comprising a plurality of resource elements; obtaining interference information associated with the plurality of resource elements; extracting resource elements from the plurality of resource elements carrying data into a first set based on the interference information; dividing the resource elements in the first set into one or more sub-sets each comprising T number of resource elements; filtering the resource elements in said one or more sub-sets by applying a balanced whitening and energy focusing filter W so as to obtain filtered resource elements y; and equalizing the filtered resource elements y. The invention also relates to a receive device, a computer program, and a computer program product.
Abstract translation: 本发明涉及蜂窝无线通信系统的接收机节点中的均衡方法，所述方法包括：接收包括多个资源元素的至少一个无线电信号; 获得与所述多个资源元素相关联的干扰信息; 基于所述干扰信息，从携带数据的所述多个资源元素提取资源元素到第一集合; 将第一组中的资源元素划分成每个包括T个资源元素的一个或多个子集; 通过应用平衡白化和能量聚焦滤波器W对所述一个或多个子集中的资源元素进行滤波，以获得滤波后的资源元素y; 并均衡经过过滤的资源元素y。 本发明还涉及接收设备，计算机程序和计算机程序产品。
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公开(公告)号：US20150117391A1
公开(公告)日：2015-04-30
申请号：US14068607
申请日：2013-10-31
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Fredrik Rusek , Basuki Endah Priyanto , Sha Hu , Gengshi Wu , Shashi Kant
CPC classification number: H04B7/0837 , H04B7/0413 , H04L25/03171 , H04L25/0328 , H04L25/03821 , H04L25/03968 , H04L27/2691 , H04W28/04
Abstract: The present invention relates to an equalizing method in a receiver node of a cellular wireless communication system, the method comprising: receiving at least one radio signal comprising a plurality of resource elements; obtaining interference information associated with the plurality of resource elements; extracting resource elements from the plurality of resource elements carrying data into a first set based on the interference information; dividing the resource elements in the first set into one or more sub-sets each comprising T number of resource elements; filtering the resource elements in said one or more sub-sets by applying a balanced whitening and energy focusing filter W so as to obtain filtered resource elements y; and equalizing the filtered resource elements y. The invention also relates to a receive device, a computer program, and a computer program product.
Abstract translation: 本发明涉及蜂窝无线通信系统的接收机节点中的均衡方法，所述方法包括：接收包括多个资源元素的至少一个无线电信号; 获得与所述多个资源元素相关联的干扰信息; 基于所述干扰信息，从携带数据的所述多个资源元素提取资源元素到第一集合; 将第一组中的资源元素划分成每个包括T个资源元素的一个或多个子集; 通过应用平衡白化和能量聚焦滤波器W对所述一个或多个子集中的资源元素进行滤波，以获得滤波后的资源元素y; 并均衡经过过滤的资源元素y。 本发明还涉及接收设备，计算机程序和计算机程序产品。
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公开(公告)号：US20140369300A1
公开(公告)日：2014-12-18
申请号：US14459464
申请日：2014-08-14
Applicant: Huawei Technologies Co., Ltd.
Inventor： Sha Hu , Gengshi Wu , Basuki Endah Priyanto , Fredrik Rusek , Shashi Kant , Jianjun Chen
CPC classification number: H04B7/005 , H04J11/004 , H04J11/0046 , H04J11/005 , H04L25/03305 , H04L25/03318 , H04W72/0406
Abstract: The present disclosure relates to an iterative pilot symbol interference cancellation method in a receiver node of a cellular wireless communication system. The method includes receiving a superimposed signal comprising pilot symbols and data symbols associated with a serving cell and pilot symbols associated with one or more interfering cells, extracting a first set from the superimposed signal. The first set includes a plurality of data symbols associated with said serving cell which are affected by an interference from the one or more interfering cells. The method further includes estimating an interference of the first set, removing interference from the first set using the estimated interference, estimating the plurality of data symbols, subtracting the estimated plurality of data symbols from the first set, and repeating the estimating an interference, the removing interference, the estimating plurality of data symbols, and the subtracting steps i number of times, where i≧1.
Abstract translation: 本公开涉及蜂窝无线通信系统的接收机节点中的迭代导频符号干扰消除方法。 该方法包括：接收叠加的信号，该叠加信号包括与服务小区相关联的导频符号和数据符号以及与一个或多个干扰小区相关联的导频符号，从叠加信号中提取第一组。 第一组包括与由所述一个或多个干扰小区的干扰影响的与所述服务小区相关联的多个数据符号。 该方法还包括估计第一组的干扰，使用估计的干扰去除来自第一组的干扰，估计多个数据符号，从第一组中减去估计的多个数据符号，并重复估计干扰， 去除干扰，估计多个数据符号和减法步骤i次数，其中i≥1。
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公开(公告)号：US20170279547A1
公开(公告)日：2017-09-28
申请号：US15618275
申请日：2017-06-09
Applicant: Huawei Technologies Co., Ltd.
Inventor： Sha Hu , Fredrik Rusek , Jianjun Chen
IPC: H04B17/336 , H04L1/00 , H04B7/0456 , H04L25/02 , H04B17/327
CPC classification number: H04B17/336 , H04B7/0413 , H04B7/0456 , H04B17/327 , H04L1/0054 , H04L25/021 , H04L25/0226 , H04L25/0246 , H04L25/03898 , H04L25/03968 , H04L2025/03426 , Y02D70/00 , Y02D70/1262 , Y02D70/1264 , Y02D70/142 , Y02D70/146 , Y02D70/444
Abstract: An apparatus including a processor configured to receive a digital communication signal, wherein the digital communication signal includes a common reference signal and transmitted data. The processor determines a first interfering channel matrix for a first interfering cell based on a channel estimation of the common reference signal, and estimates a first power offset ratio and a first effective pre-coding matrix for the first interfering cell by evaluating a maximum likelihood metric, wherein the maximum likelihood metric is based on a first interfering channel correlation. The processor then reconstructs a channel covariance matrix based on the estimated first power offset ratio and the first effective pre-coding matrix and detects the transmitted data based on the reconstructed channel covariance matrix.
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公开(公告)号：US09160383B2
公开(公告)日：2015-10-13
申请号：US14077968
申请日：2013-11-12
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jianjun Chen , Fredrik Rusek , Sha Hu , Gengshi Wu , Basuki Endah Priyanto , Shashi Kant
CPC classification number: H04B1/1027 , H04B1/16 , H04B7/0413 , H04B7/0456 , H04B7/0891 , H04L25/03305 , H04L2025/03426
Abstract: The present disclosure relates to an iterative method for estimating covariance matrices of communication signals comprising a) computing a reference symbol covariance matrix estimate (k,l); b) inputting said reference symbol covariance matrix estimate (k,l) to a detector or a decoder in a first iteration, and thereafter inputting the covariance matrix estimate output from e) to the detector or the decoder in subsequent iterations to obtain an updated demodulated or decoded communication signal for each iteration; c) inputting the demodulated or decoded communication signal to a symbol generator; d) computing an updated data covariance matrix estimate (k,l) for each iteration based on data symbols of said regenerated communication signal; e) combining said reference symbol covariance matrix estimate (k,l) and said updated data covariance matrix estimate (k,l); and f) forwarding said covariance matrix estimate output to the detector or decoder in b) to obtain the updated demodulated or decoded communication signal for each iteration.
Abstract translation: 本公开涉及一种用于估计通信信号的协方差矩阵的迭代方法，包括：a）计算参考符号协方差矩阵估计（k，l）; b）在第一次迭代中将所述参考符号协方差矩阵估计（k，l）输入到检测器或解码器，然后在随后的迭代中将从e）输出的协方差矩阵估计输入到检测器或解码器，以获得更新的解调 或每个迭代的解码通信信号; c）将解调或解码的通信信号输入到符号发生器; d）基于所述再生通信信号的数据符号计算每次迭代的更新数据协方差矩阵估计（k，l）; e）组合所述参考符号协方差矩阵估计（k，l）和所述更新的数据协方差矩阵估计（k，l）; 以及f）在b）中将所述协方差矩阵估计输出转发到检测器或解码器，以获得每次迭代的经更新的解调或解码的通信信号。
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