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公开(公告)号：US10038481B2
公开(公告)日：2018-07-31
申请号：US14655731
申请日：2013-08-14
Applicant: ZTE CORPORATION
Inventor： Chen Huang , Yajun Zhao , Linmei Mo , Hanqing Xu , Baoyu Sun , Yujie Li , Hongfeng Qin , Guofeng Chen , Hongfeng Yuan , Xin Zhang
IPC: H04B7/0456 , H04B7/06 , H04W72/04 , H04W74/00 , H04W88/08
CPC classification number: H04B7/0456 , H04B7/0486 , H04B7/0617 , H04W72/042 , H04W74/004 , H04W88/08
Abstract: Disclosed are a multi-antenna transmission method, a terminal and a base station, wherein, an eNB sends a UE a SRS transmission mode including new SRS transmission port information and/or a signaling for instructing the UE to perform antenna group alternate transmission as well as a control signaling required by the SRS transmission mode; the UE transmits a SRS using the abovementioned SRS transmission mode, and the eNB estimates a channel information according to the SRS and calculates and transmits a precoding matrix.
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公开(公告)号：US09722745B2
公开(公告)日：2017-08-01
申请号：US14655730
申请日：2013-08-14
Applicant: ZTE CORPORATION
Inventor： Linmei Mo , Yajun Zhao , Baoyu Sun , Chen Huang , Hanqing Xu , Yujie Li , Hongfeng Qin , Guofeng Chen , Hongfeng Yuan , Xin Zhang
IPC: H04L5/00 , H04B7/024 , H04B1/04 , H04B7/04 , H04B7/06 , H04B7/08 , H04W72/08 , H04L1/00 , H04W88/08
CPC classification number: H04L5/0035 , H04B1/0475 , H04B7/024 , H04B7/043 , H04B7/0632 , H04B7/0857 , H04L1/0003 , H04L1/0009 , H04L1/0026 , H04L1/0077 , H04L5/0048 , H04L5/006 , H04W72/082 , H04W88/08
Abstract: A method and base station for coordinated multi point data transmission are disclosed. The method includes: a base station receiving a per-cell CQI value reported by a UE; looking up an SINR-CQI mapping table according to the per-cell CQI value, and acquiring a subband/broadband SINR value; performing CQI recalculation according to the subband/broadband SINR value, and acquiring a recalculated subband/broadband CQI value; and selecting modulation and coding according to the recalculated subband/broadband CQI value to schedule data transmission. With the method and base station of the embodiments of the present document, in a CoMP system, in a joint transmission scenario, the accuracy of the CQI value used by the BS for scheduling is improved, and the oscillation during an AMC process is reduced.
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13.发明授权公开(公告)号：US09622268B2
公开(公告)日：2017-04-11
申请号：US14350378
申请日：2013-08-07
Applicant: ZTE Corporation
Inventor： Lei Li , Xiaoxiao Liu , Bin Li , Hongfeng Qin , Xue Wang
CPC classification number: H04W74/0833 , H04W88/08
Abstract: A random access method and random access system for a terminal in a high-speed mobile environment are provided. Wherein, the method comprises: selecting a random access preamble format according to a preset cell coverage radius target value; judging whether using a restricted set of cyclic shift quantities pre-configured satisfies a requirement of the cell coverage radius target value under the selected random access preamble format; if not satisfying, selecting a cyclic shift quantity which satisfies the requirement of the cell coverage radius target value from a unrestricted set of the cyclic shift quantities pre-configured; and generating a random access signal according to the cyclic shift quantity and a pre-configured mother code, and performing access using the random access signal. Through the above-mentioned technical scheme, the embodiment of the present document provides a more perfect random access method and random access system for a terminal in a high-speed mobile environment.
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14.发明申请Processing Method and Device for Performing Space-Time Decoding on MIMO Signal 有权用于在MIMO信号上执行空时解码的处理方法和装置公开(公告)号：US20150155924A1
公开(公告)日：2015-06-04
申请号：US14406021
申请日：2013-08-20
Applicant: ZTE CORPORATION
Inventor： Hongfeng Qin , Gaocai Xiong , Yue Xiao , Hongzhi Zhao
IPC: H04B7/04
CPC classification number: H04B7/0478 , H04B7/0473 , H04L1/0631 , H04L25/03242 , H04L25/03318 , H04L25/03891 , H04L2025/0342
Abstract: Provided is a processing method and apparatus for performing space-time decoding on MIMO signals. The method includes: performing QR decomposition on a channel matrix H with a size of Nr×Nt in a MIMO system and performing an initialization operation, wherein Nt is the number of transmitting antennas and Nr is the number of receiving antennas; enumerating candidate constellation points of transmitting signals at each level of transmitting antennas according to an input parameter M=[M1, M2, . . . , MNt], a receiving signal y and a result of the QR decomposition of the channel matrix H, wherein M is the number of the numerated candidate constellation points at each level, y=Hs+n calculating increments of a Euclid distance due to addition of selection of a candidate constellation point at present level according to obtained candidate constellation points; and deciding and outputting space-time decoding according to the sum of calculated increments of Euclid distances of candidate constellation points at all levels.
Abstract translation: 提供了一种用于对MIMO信号执行空时解码的处理方法和装置。 该方法包括：在MIMO系统中对Nr×Nt大小的信道矩阵H执行QR分解，并执行初始化操作，其中Nt是发射天线的数量，Nr是接收天线的数量; 根据输入参数M = [M1，M2，...]来枚举在发射天线的每个等级的发射信号的候选星座点。 。 。 ，MNt]，接收信号y和信道矩阵H的QR分解的结果，其中M是每个级别上的所计算的候选星座点的数量，y = Hs + n计算由于加法而产生的欧几里德距离的增量 根据获得的候选星座点选择当前级别的候选星座点; 并根据所有级别的候选星座点的欧几里德距离的计算增量的总和来确定和输出空时解码。
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公开(公告)号：US10079623B2
公开(公告)日：2018-09-18
申请号：US15109820
申请日：2014-07-17
Applicant: ZTE CORPORATION
Inventor： Bin Li , Guomei Zhang , Xuelei Lv , Guobing Li , Hongfeng Qin
CPC classification number: H04B7/024 , H04B7/0456 , H04B7/26 , H04B15/00
Abstract: A coordinated beamforming method and apparatus based on partial interference alignment, the method includes: selecting an optimal partial interference alignment mode from selectable partial interference alignment modes of terminals covered by base stations in a coordinating cluster of a coordinated multiple points transmission according to a chordal distance criterion; and transmitting, by the base stations, signals to the terminals by adopting the optimal partial interference alignment mode.
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Patent Agency Ranking
公开(公告)号：US10033559B2
公开(公告)日：2018-07-24
申请号：US15319950
申请日：2014-08-27
Applicant: ZTE CORPORATION
Inventor： Wenfang Wang , Shaopeng Wang , Hongfeng Qin
Abstract: The present disclosure provides a method for detecting a random access signal. The method includes: determining a temporary peak detection sequence according to a received time domain random access signal; determining an interference cancellation weight for a frequency domain cyclic shift sequence corresponding to a search window in the temporary peak detection sequence, and performing interference cancellation on the temporary peak detection sequence according to the interference cancellation weight, obtaining a final peak detection sequence; and performing peak detection on the final peak detection sequence. The present disclosure discloses an apparatus and system for detecting a random access signal at the same time. According to the method, the present disclosure can eliminate the deterioration of the leak detection performance and the false detection performance caused by the interference during the random access signal detection, improve the detection accuracy and save resources.
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公开(公告)号：US09426829B2
公开(公告)日：2016-08-23
申请号：US14385568
申请日：2013-07-23
Applicant: ZTE CORPORATION
Inventor： Bin Li , Xue Wang , Lei Li , Hongfeng Qin , Xiaoxiao Liu
CPC classification number: H04W74/0833 , H04L5/0048 , H04L5/14 , H04L5/1438 , H04L7/0079 , H04W56/004 , H04W56/0055
Abstract: The embodiments of the present document provide a random access method and a receiver, wherein, the random access method includes: after starting up, a receiver performing cell search and downlink synchronization to obtain a time reference; the receiver obtaining a distance between itself and a base station; the receiver selecting a random access format according to parameters and a load condition of the system where it is located; the receiver obtaining a cell radius supported by the selected random access format, and calculating a line-of-sight transmission time delay if the cell radius is less than the distance; and based on the time reference, the receiver transmitting a random access subframe the line-of-sight transmission time delay in advance.
Abstract translation: 本发明的实施例提供一种随机接入方法和接收机，其中随机接入方法包括：启动后，接收机执行小区搜索和下行同步以获得时间参考; 所述接收机获得其自身与基站之间的距离; 接收机根据其所在系统的参数和负载条件选择随机接入格式; 所述接收器获得由所选择的随机存取格式支持的单元半径，以及如果所述单元半径小于所述距离，则计算视线传输时间延迟; 并且基于所述时间参考，所述接收机预先向所述随机接入子帧发送所述视距传输时间延迟。
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18.发明申请METHOD AND DEVICE FOR ESTIMATING CHANNEL IN MULIPLE-RECEIVING ANTENNA SYSTEM 有权用于估计接收天线系统中的信道的方法和装置公开(公告)号：US20150236872A1
公开(公告)日：2015-08-20
申请号：US14421783
申请日：2013-08-16
Applicant: ZTE CORPORATION
Inventor： Gaocai Xiong , Hongfeng Qin , Yue Xiao , Hongzhi Zhao
CPC classification number: H04L25/025 , H04B7/0413 , H04L5/005 , H04L25/0204 , H04L25/022 , H04L25/0224 , H04L25/0228 , H04L25/0242 , H04L25/0256 , H04L27/265
Abstract: Disclosed are a method and device for estimating a channel in a multiple-receiving antenna system. The method comprises: a channel estimation is performed on a received pilot signal by using a least square channel estimation algorithm to obtain an estimation value HLS; an N′-dimensional channel autocorrelation matrix formula (I) and a channel frequency domain autocorrelation matrix Ri from a transmitting antenna i to any receiving antenna are acquired, and a weight matrix W which is descrambled and denoised is calculated, wherein i=1, 2, . . . , NT, and NT is the number of antennae at a transmitting end; the estimation value HLS is corrected by using the weight matrix W to obtain a corrected estimation value HP-LMMSE. The method and device of the disclosure may obtain the performance as close as possible to the LMMSE technology through less prior statistic information, and have a simple implementation manner.
Abstract translation: 公开了一种用于估计多接收天线系统中的信道的方法和装置。 该方法包括：通过使用最小二乘信道估计算法对接收到的导频信号执行信道估计，以获得估计值HLS; 获取N'维信道自相关矩阵公式（I）和从发射天线i到任何接收天线的信道频域自相关矩阵Ri，并且计算被解扰和去噪的权重矩阵W，其中i = 1， 2，。 。 。 NT和NT是发送端的天线数; 通过使用权重矩阵W来校正估计值HLS，以获得校正估计值HP-LMMSE。 本公开的方法和装置可以通过较少的现有统计信息获得尽可能接近LMMSE技术的性能，并且具有简单的实现方式。
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公开(公告)号：US20150181622A1
公开(公告)日：2015-06-25
申请号：US14385568
申请日：2013-07-23
Applicant: ZTE CORPORATION
Inventor： Bin Li , Xue Wang , Lei Li , Hongfeng Qin , Xiaoxiao Liu
CPC classification number: H04W74/0833 , H04L5/0048 , H04L5/14 , H04L5/1438 , H04L7/0079 , H04W56/004 , H04W56/0055
Abstract: The embodiments of the present document provide a random access method and a receiver, wherein, the random access method includes: after starting up, a receiver performing cell search and downlink synchronization to obtain a time reference; the receiver obtaining a distance between itself and a base station; the receiver selecting a random access format according to parameters and a load condition of the system where it is located; the receiver obtaining a cell radius supported by the selected random access format, and calculating a line-of-sight transmission time delay if the cell radius is less than the distance; and based on the time reference, the receiver transmitting a random access subframe the line-of-sight transmission time delay in advance.
Abstract translation: 本发明的实施例提供一种随机接入方法和接收机，其中随机接入方法包括：启动后，接收机执行小区搜索和下行同步以获得时间参考; 所述接收机获得其自身与基站之间的距离; 接收机根据其所在系统的参数和负载条件选择随机接入格式; 所述接收器获得由所选择的随机存取格式支持的单元半径，以及如果所述单元半径小于所述距离，则计算视线传输时间延迟; 并且基于所述时间参考，所述接收机预先向所述随机接入子帧发送所述视距传输时间延迟。
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公开(公告)号：US20150124716A1
公开(公告)日：2015-05-07
申请号：US14358758
申请日：2013-07-22
Applicant: ZTE CORPORATION
Inventor： Lei Li , Xue Wang , Bin Li , Hongfeng Qin , Xiaoxiao Liu
IPC: H04W74/08
CPC classification number: H04W74/0833 , H04L27/2666 , H04W74/002
Abstract: A method for acquiring a format of a random access subframe and a receiver are provided. The method includes: according to a cell radius supported currently and a cell coverage radius decided by the length of ZC sequence and the size of Ncs, a receiver determining the length of preamble sequence in an extended random access subframe; according to the cell radius supported currently and a cell coverage radius decided by the length of GT, determining the lengths of CP and GT in the extended random access subframe; according to sampling rates of a system where the receiver is located and the lengths of the preamble sequence and CP and GT, respectively calculating the numbers of sampling points of preamble sequence and GT and CP; based on the above numbers of sampling points, calculating the length of extended random access subframe and determining the format of extended random access subframe.
Abstract translation: 提供了一种用于获取随机接入子帧和接收机的格式的方法。 该方法包括：根据当前支持的小区半径和由ZC序列的长度和Ncs的大小决定的小区覆盖半径，接收者确定扩展随机接入子帧中的前导序列的长度; 根据当前支持的小区半径和由GT长度确定的小区覆盖半径，确定扩展随机接入子帧中CP和GT的长度; 根据接收机所在系统的采样率和前导码序列的长度以及分别计算前导码序列和GT和CP的采样点数的CP和GT的长度; 基于上述数量的采样点，计算扩展随机接入子帧的长度并确定扩展随机接入子帧的格式。
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