公开(公告)号：US10270500B2

公开(公告)日：2019-04-23

申请号：US15107934

申请日：2014-06-23

Applicant: ZTE CORPORATION

Inventor： Yijian Chen ,  Zhaohua Lu ,  Jing Zhao ,  Huahua Xiao ,  Guanghui Yu

IPC: H04B7/04 ,  H04L5/00 ,  H04W72/04 ,  H04W72/08 ,  H04B7/0417 ,  H04B7/0413 ,  H04B7/06 ,  H04B7/0456 ,  H04L25/02

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.

公开(公告)号：US10673505B2

公开(公告)日：2020-06-02

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

IPC: H04B7/06 ,  H04L1/00 ,  H04L5/00 ,  H04B7/0456 ,  H04W24/10 ,  H04B17/345

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.

公开(公告)号：US10348373B2

公开(公告)日：2019-07-09

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: H04B7/06 ,  H04B7/0417 ,  H04L25/03 ,  H04B7/0456 ,  H04B7/04 ,  H04B7/0452

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.

公开(公告)号：US10020853B2

公开(公告)日：2018-07-10

申请号：US15324847

申请日：2015-04-15

Applicant: ZTE CORPORATION

Inventor： Yijian Chen ,  Zhaohua Lu ,  Jing Zhao ,  Yuxin Wang

IPC: H04K1/10 ,  H04L27/28 ,  H04B7/0417 ,  H04B7/06 ,  H04B7/0456 ,  H04B7/0452

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.

公开(公告)号：USD772894S1

公开(公告)日：2016-11-29

申请号：US29517572

申请日：2015-02-13

Applicant: ZTE Corporation

Designer： Jing Zhao ,  Qinghui Cao ,  Feng Gao

公开(公告)号：US09941942B2

公开(公告)日：2018-04-10

申请号：US15114039

申请日：2014-07-23

Applicant: ZTE Corporation

Inventor： Jing Zhao ,  Yijian Chen ,  Jun Xu ,  Huahua Xiao ,  Zhaohua Lu

IPC: H04B7/04 ,  H04B7/0456 ,  H04L1/16 ,  H04L25/03 ,  H04L1/00 ,  H04B7/0452 ,  H04B7/06

CPC classification number: H04B7/0456 ,  H04B7/0452 ,  H04B7/0626 ,  H04L1/0026 ,  H04L1/16 ,  H04L25/03898

Abstract: Provided are a method and device for processing Channel State Information (CSI), User Equipment (UE) and an Evolved Node B (eNodeB). The method includes: storing one or more sets of precoding codebook models the same as those of an eNodeB; determining a precoding codebook model for feeding back CSI; and sending the CSI to the eNodeB by adopting the determined precoding codebook model. By the solution, the problems of difficulty in code word selection and increase of link overhead during application of a codebook-based CSI feedback manner to massive Multi-input Multi-output (MIMO) in the related technology is solved, and the effect of reducing codebook transmission overhead is further achieved.

公开(公告)号：US09800312B2

公开(公告)日：2017-10-24

申请号：US14764584

申请日：2014-03-21

Applicant: ZTE CORPORATION

Inventor： Jing Zhao ,  Yu Ngok Li ,  Yijian Chen ,  Xun Yang

IPC: H04B7/06 ,  H04W72/04 ,  H04L1/00

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.

公开(公告)号：US20170085303A1

公开(公告)日：2017-03-23

申请号：US15123304

申请日：2014-08-15

Applicant: ZTE Corporation

Inventor： Yijian Chen ,  Zhaohua Lu ,  Jing Zhao ,  Huahua Xiao ,  Guanghui Yu

IPC: H04B7/04 ,  H04W72/04 ,  H04W72/02 ,  H04L5/00

CPC classification number: H04B7/0417 ,  H04B7/0452 ,  H04B7/046 ,  H04B7/061 ,  H04B7/0695 ,  H04B7/088 ,  H04L5/0051 ,  H04W72/02 ,  H04W72/0413 ,  H04W72/042 ,  H04W72/046

Abstract: Disclosed are a channel information feedback method, pilot and beam transmission methods, systems and devices. The channel information feedback method includes that: a base station transmits M types of pilot signals, the M types of pilot signals corresponding to M pilot ports respectively; the base station configures N pilot ports in the M pilot ports for a terminal through signalling, M being a positive integer and N being a positive integer smaller than M; and the terminal receives and detects the pilot signals from the N pilot ports, selects K pilot ports from the N pilot ports according to received signal quality, and feeds back channel information of channels formed by the K pilot ports and the terminal, K being a positive integer smaller than N.

公开(公告)号：US10763934B2

公开(公告)日：2020-09-01

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

IPC: H04B7/00 ,  H04B7/06 ,  H04B7/04 ,  H04W72/04 ,  H04L5/00 ,  H04B7/0417 ,  H04W24/10

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.

公开(公告)号：US10187129B2

公开(公告)日：2019-01-22

申请号：US15309353

申请日：2014-08-01

Applicant: ZTE Corporation

Inventor： Jing Zhao ,  Yijian Chen ,  Zhaohua Lu ,  Huahua Xiao

IPC: H04B7/04 ,  H04W72/04 ,  H04B7/0417 ,  H04L1/00 ,  H04B7/0456 ,  H04B7/06 ,  H04B7/0452

Abstract: Disclosed are a channel state feedback information determination method, a terminal, a base station and a communication system. The method includes that: a channel state is measured to form a measurement result; when a Rank Indicator (RI) is 2, a precoding matrix is formed according to the measurement result and a precoding codebook matrix model W; and channel state feedback information is formed according to the precoding matrix. The disclosure further discloses a computer storage medium.