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1.发明申请公开(公告)号：US20180212656A1
公开(公告)日：2018-07-26
申请号：US15565200
申请日：2015-09-24
Applicant: ZTE Corporation
Inventor： Jing ZHAO , Yijian CHEN , Yu Ngok LI , Jian LI , Huahua XIAO
CPC classification number: H04B7/0473 , H04B7/0478 , H04B7/0626 , H04L1/06
Abstract: A method and device for feeding back Channel State Information (CSI) in a multi-input multi-output system are provided. In the method, User Equipment (UE) feeds back CSI comprising codebook index information to an evolved Node B (eNodeB). The codebook index information may include a first type of codebook index set I and a second type of codebook index set J, where a combination of the first type of index set I and the second type of index set J is used for indicating a precoding matrix U, and the precoding matrix U is an Nt×r matrix and is composed of at least Q×r basic vectors having a dimension of Nt/Q. The basic vectors are columns extracted from a matrix B composed of M columns of Nt/Q-dimensional vectors.
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2.发明申请公开(公告)号：US20180145735A1
公开(公告)日：2018-05-24
申请号：US15568078
申请日：2016-01-04
Applicant: ZTE Corporation
Inventor： Yijian CHEN , YU Ngok LI , Huahua XIAO , Jian LI , Zhaohua LU , Yuxin WANG , Jing ZHAO
Abstract: A method and device for configuring channel information are provided. The method includes: a base station configures Q Channel State Information (CSI) measurement threads for a CSI process, wherein Q is an integer greater than or equal to 2; and the base station configures P1 channel measurement reference signals and P2 interference measurement resources for the Q CSI measurement threads, wherein the P1 channel measurement reference signals are used to perform channel measurement on the Q CSI measurement threads, and the P2 interference measurement resources are used to perform interference measurement on the Q CSI measurement threads, P1 and P2 being integers greater than zero.
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公开(公告)号：US20170279504A1
公开(公告)日：2017-09-28
申请号：US15324847
申请日：2015-04-15
Applicant: ZTE CORPORATION
Inventor： Yijian CHEN , Zhaohua LU , Jing ZHAO , Yuxin WANG
IPC: H04B7/04 , H04B7/0456 , H04B7/0452 , H04B7/06
CPC classification number: H04B7/0421 , H04B7/0404 , H04B7/0413 , H04B7/0452 , H04B7/0456 , H04B7/0626 , H04B7/063 , H04B7/0695
Abstract: A method and system for processing a downlink pilot signal is disclosed. Herein, the method includes: a receiving end detecting downlink measurement pilot ports to obtain a received signal corresponding to each downlink measurement pilot port on each receiving antenna; performing screening on the downlink measurement pilot ports according to the received signals; calculating a receiving weight vector of each downlink measurement pilot port, and using an uplink precoding weight vector, calculated and obtained by combining the receiving weight vector with uplink and downlink operating frequencies, for data precoding; or, using N uplink precoding weight vectors, calculated and obtained by combining the receiving weight vector with uplink and downlink operating frequencies, for uplink pilot precoding, where N is the number of uplink precoding pilots transmitted, and N is an integer which is greater than or equal to 1. The above technical solution can effectively reduce pilot overhead in communication systems.
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Patent Agency Ranking
4.发明申请公开(公告)号：US20170272133A1
公开(公告)日：2017-09-21
申请号：US15326218
申请日：2015-05-12
Applicant: ZTE CORPORATION
Inventor： Yijian CHEN , Zhaohua LU , Guanghui YU , Jing ZHAO , Huahua XIAO
IPC: H04B7/04 , H04B7/06 , H04B7/0456
CPC classification number: H04B7/0421 , H04B7/04 , H04B7/0452 , H04B7/0456 , H04B7/0634 , H04L25/03
Abstract: The present invention discloses methods and apparatuses for quantizing, and feeding back channel information and precoding data. In the above methods, a channel measurement pilot signal is received from a base station. The channel information is acquired by performing channel measurement according to the channel measurement pilot signal. CMatrix1 and CMatrix2 are calculated using the channel information, herein CMatrix1 and CMatrix2 are used to quantize the channel information or indicate the base station to perform precoding. And first indication information of CMatrix1 and/or second indication information of CMatrix2 are fed back to the base station. According to the technical solutions of the present invention, as the influence of the polarization leakage is considered in the feedback design, a significant performance gain exists in a case that the polarization leakage actually occurs.
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公开(公告)号：US20170302420A1
公开(公告)日：2017-10-19
申请号：US15506258
申请日：2015-04-03
Applicant: ZTE CORPORATION
Inventor： Zhaohua LU , Yijian CHEN , Yu Ngok LI , Guanghui YU , Jing ZHAO , Huahua XIAO , Xianming CHEN
CPC classification number: H04L5/0048 , G06F17/141 , H04B7/024 , H04B7/06 , H04B7/0617 , H04L5/0026 , H04L5/0035 , H04L5/006 , H04L5/0092 , H04L41/0823 , H04W72/0426
Abstract: The present document relates to a method for sending and receiving a reference signal and a communication node. The method includes: a first communication node sending a first reference signal and a second reference signal to a second communication node, the first reference signal is different from the second reference signal. The solution achieves the effect that the second communication node acquires channel state quality through the second reference signal which is different from the first reference signal when the second communication node cannot successfully receive the first reference signal.
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公开(公告)号：US20160323021A1
公开(公告)日：2016-11-03
申请号：US15107934
申请日：2014-06-23
Applicant: ZTE CORPORATION
Inventor： Yijian CHEN , Zhaohua LU , Jing ZHAO , Huahua XIAO , Guanghui YU
CPC classification number: H04B7/0417 , H04B7/0413 , H04B7/0486 , H04B7/0619 , H04B7/0658 , H04B7/0663 , H04L5/0051 , H04L25/0202 , H04W72/0413 , H04W72/085
Abstract: A method for channel information feedback, a base station and a device, the method includes: a terminal performs a channel measurement, constructs an information matrix used for representing channel information according to a preset function, determines optimal channel parameters and feeds back the channel parameters to a base station; and the base station constructs quantization information of a characteristic vector of a channel matrix according to the received channel parameters and the channel matrix. In the technical solution provided by the embodiment of the present document, since the most essential characteristic of a dual-polarized channel, i.e., information u that represents a multipath direction, is matched in the channel matrix, channel information feedback with the lowest cost is implemented, and compared with the existing codebook feedback solution, on the basis that feedback precision is satisfied, the feedback overhead is obviously reduced, terminal implementation complexity is reduced and feedback efficiency is improved.
Abstract translation: 一种用于信道信息反馈的方法，基站和设备，所述方法包括：终端执行信道测量，根据预设功能构建用于表示信道信息的信息矩阵，确定最佳信道参数并反馈信道参数 到基站; 并且基站根据接收到的信道参数和信道矩阵构建信道矩阵的特征向量的量化信息。 在本文的实施例提供的技术方案中，由于双极化信道的最基本特征，即表示多径方向的信息u在信道矩阵中匹配，所以以最低成本的信道信息反馈是 实现，并与现有的码本反馈解决方案进行比较，在反馈精度满足的基础上，反馈开销显着降低，终端实现复杂度降低，反馈效率提高。
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公开(公告)号：US20160065289A1
公开(公告)日：2016-03-03
申请号：US14764584
申请日：2014-03-21
Applicant: ZTE CORPORATION
Inventor： Jing ZHAO , Yu Ngok LI , Yijian CHEN , Xun YANG
CPC classification number: H04B7/0626 , H04B7/0636 , H04B7/0639 , H04L1/0026 , H04L1/0029 , H04L1/0031 , H04W72/0453
Abstract: A method and terminal for feeding back channel state information are applied to a 4-antenna system. The method includes: a terminal acquiring channel state information, the terminal performing joint encoding on PMI1 information and RI information into a 4-bit or 5-bit feedback report, or, performing joint encoding on PMI1 information and PMI2 information into a 4-bit feedback report, or, the PMI2 information using 2-bit feedback; and the terminal feeding back the feedback report in a physical uplink control channel.
Abstract translation: 将反馈信道状态信息的方法和终端应用于4天线系统。 该方法包括：终端获取信道状态信息，终端对PMI1信息和RI信息进行联合编码为4比特或5比特反馈报告，或者对PMI1信息和PMI2信息进行联合编码为4比特 反馈报告，或使用2位反馈的PMI2信息; 并且终端在物理上行链路控制信道中反馈反馈报告。
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公开(公告)号：US20170317731A1
公开(公告)日：2017-11-02
申请号：US15511248
申请日：2015-04-10
Applicant: ZTE CORPORATION
Inventor： Yijian CHEN , Zhaohua LU , Yu Ngok LI , Huahua XIAO , Jing ZHAO , Yuxin WANG
Abstract: Embodiments of the present disclosure provide a reference signal information feedback method, apparatus and terminal. The method includes: a terminal determines a reference signal parameter of an uplink measurement reference signal and/or a downlink measurement reference signal, and the terminal feeds the determined reference signal parameter back to a base station.
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