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81. 发明申请

US20160142227A1 SYSTEMS AND METHODS FOR CARRIER FREQUENCY OFFSET ESTIMATION FOR LONG TRAINING FIELDS 有权
标题翻译：用于长期训练场的载波频率偏差估计的系统和方法
公开(公告)号：US20160142227A1
公开(公告)日：2016-05-19
申请号：US14752050
申请日：2015-06-26
申请人： Qinghua Li , Xiaogang Chen , Yuan Zhu , Robert Stacey
发明人： Qinghua Li , Xiaogang Chen , Yuan Zhu , Robert Stacey
IPC分类号： H04L25/02 , H04L27/00 , H04L27/26
CPC分类号： H04L25/0226 , H04L5/0016 , H04L27/0014 , H04L27/2675 , H04L27/34
摘要： This disclosure describes systems, and methods related to determining carrier frequency offset of a wireless communication channel based on a determined phase difference. In some embodiments, an access point is caused to receive one or more streams comprising one or more encoded long training field (LTF) symbols over the wireless communication channel from one or more user devices. The access point then determines a first phase of the wireless communication channel upon receipt of a first LTF symbol, and determines a second phase of the wireless communication channel upon receipt of a second LTF symbol. The access point next determines a phase difference between the first phase and the second phase. Based on the determined phase difference, the access point determines a carrier frequency offset of the wireless communication channel. Lastly, the access point modifies the wireless communication channel based at least in part on the determined CFO.
摘要翻译：本公开描述了基于确定的相位差来确定无线通信信道的载波频率偏移的系统和方法。在一些实施例中，使得接入点在一个或多个用户设备的无线通信信道上接收包括一个或多个经编码的长训练场（LTF）符号的一个或多个流。然后，接入点在接收到第一LTF符号时确定无线通信信道的第一阶段，并且在接收到第二LTF符号时确定无线通信信道的第二阶段。接下来的接入点确定第一阶段和第二阶段之间的相位差。基于确定的相位差，接入点确定无线通信信道的载波频率偏移。最后，接入点至少部分地基于所确定的CFO来修改无线通信信道。

82. 发明申请

US20160072564A1 PARALLEL CHANNEL TRAINING IN MULTI-USER MULTIPLE-INPUT AND MULTIPLE-OUTPUT SYSTEM 有权
标题翻译：多用户多输入和多输出系统中的并行通道训练
公开(公告)号：US20160072564A1
公开(公告)日：2016-03-10
申请号：US14582332
申请日：2014-12-24
申请人： Qinghua Li , Xiaogang Chen , Huaning Niu , Robert Stacey , Yuan Zhu , Xintian E. Lin
发明人： Qinghua Li , Xiaogang Chen , Huaning Niu , Robert Stacey , Yuan Zhu , Xintian E. Lin
IPC分类号： H04B7/04 , H04W76/02 , H04W72/04 , G06N99/00 , H04B7/06
CPC分类号： H04B7/0452 , G06N99/005 , H04L5/0025 , H04L5/0051 , H04L27/2613 , H04W72/00
摘要： This disclosure describes systems, and methods related to parallel channel training in communication networks. A first computing device comprising one or more processors and one or more transceiver component may receive a first connection request from a second computing device, and a second connection request from a third computing device. The first computing device may determine a first training field associated with the first connection request and a second training field associated with the second request. The first computing device may send the first training field to the second computing device based at least in part on the first connection request and sending in parallel, the second training field to the third computing device based at least in part on the second connection request. The first computing device may establish a first spatial channel stream with the second computing device based at least in part on the first training field and a second spatial channel stream with the third computing device based at least in part on the second training field.
摘要翻译：本公开描述了与通信网络中的并行信道训练相关的系统和方法。包括一个或多个处理器和一个或多个收发器组件的第一计算设备可以从第二计算设备接收第一连接请求，并从第三计算设备接收第二连接请求。第一计算设备可以确定与第一连接请求相关联的第一训练场和与第二请求相关联的第二训练场。第一计算设备可以至少部分地基于第一连接请求将第一训练场发送到第二计算设备，并且至少部分地基于第二连接请求并行地发送第二训练场到第三计算设备。第一计算设备可以至少部分地基于第一训练场和第三计算设备的第二空间信道流至少部分地基于第二训练场来建立与第二计算设备的第一空间信道流。

83. 发明申请

US20150029875A1 DOWNTILT SELECTION IN A FULL DIMENSIONAL MULTIPLE-INPUT MULTIPLE-OUTPUT SYSTEM 有权
标题翻译：全尺寸多输入多输出系统中的停机选择
公开(公告)号：US20150029875A1
公开(公告)日：2015-01-29
申请号：US14231158
申请日：2014-03-31
申请人： Yuan Zhu , Qinghua Li , Xiaogang Chen , Feng Xue , Hooman Shirani-Mehr
发明人： Yuan Zhu , Qinghua Li , Xiaogang Chen , Feng Xue , Hooman Shirani-Mehr
IPC分类号： H04W24/08 , H04W72/08
CPC分类号： H04W72/082 , H01Q1/243 , H01Q3/00 , H04B7/0632 , H04B7/0686 , H04B7/0695 , H04B17/318 , H04J11/0023 , H04L5/0007 , H04L5/0094 , H04L5/14 , H04L69/16 , H04W4/70 , H04W16/28 , H04W24/02 , H04W24/08 , H04W24/10 , H04W28/12 , H04W36/0066 , H04W36/0072 , H04W36/0083 , H04W36/30 , H04W52/0209 , H04W72/0413 , H04W72/042 , H04W72/0446 , H04W74/0833 , H04W76/10 , H04W76/11 , H04W76/14 , H04W76/27 , H04W84/045 , H04W84/12 , H04W84/18 , H04W88/06 , H04W88/08 , Y02D70/00 , Y02D70/1224 , Y02D70/1226 , Y02D70/1242 , Y02D70/1244 , Y02D70/1246 , Y02D70/1262 , Y02D70/1264 , Y02D70/142 , Y02D70/144 , Y02D70/146 , Y02D70/162 , Y02D70/164 , Y02D70/166 , Y02D70/168 , Y02D70/21 , Y02D70/22 , Y02D70/23 , Y02D70/24 , Y02D70/25 , Y02D70/444
摘要： A technology for an enhanced node B (eNode B) in a cellular network that is operable to determine downtilt using full dimensional (FD) multiple-input multiple-output (MIMO). A plurality of orthogonal frequency division multiple access (OFDMA) signals can be transmitted, wherein each transmitted OFDMA signal is transmitted with a selected downtilt angle from a two dimensional antenna array of the eNode B. Reference signal received power (RSRP) feedback information can be received from a UE for each of transmitted OFDMA signals at the selected downtilt angles. Received signal strength indicator (RSSI) feedback information can be received from the UE. A reference signal received quality (RSRQ) can be calculated for each of the selected antennas angles using the RSRP feedback information and the RSSI feedback information. A downtilt angle can be selected for transmitting data from the eNode B with a highest signal to interference plus noise ratio (SINR).
摘要翻译：蜂窝网络中用于增强节点B（eNode B）的技术，其可操作以使用全维（FD）多输入多输出（MIMO）来确定下倾斜。可以发送多个正交频分多址（OFDMA）信号，其中每个发送的OFDMA信号以来自eNode B的二维天线阵列的选定的下倾斜角发送。参考信号接收功率（RSRP）反馈信息可以是在所选择的下倾角处从UE发送的每个发送的OFDMA信号。可以从UE接收到接收信号强度指示符（RSSI）反馈信息。可以使用RSRP反馈信息和RSSI反馈信息为每个所选择的天线角度计算参考信号接收质量（RSRQ）。可以选择下倾角，以便从具有最高信号到干扰加噪声比（SINR）的eNode B传输数据。

84. 发明授权

US08873417B2 Techniques using differential precoding for highly correlated channels in wireless networks 有权
标题翻译：使用差分预编码技术在无线网络中高度相关的信道
公开(公告)号：US08873417B2
公开(公告)日：2014-10-28
申请号：US13591613
申请日：2012-08-22
申请人： Xiaogang Chen , Yuan Zhu , Qinghua Li , Xintian E. Lin , Yang-Seok Choi
发明人： Xiaogang Chen , Yuan Zhu , Qinghua Li , Xintian E. Lin , Yang-Seok Choi
IPC分类号： G01R31/08 , H04B7/04 , H04B7/06
CPC分类号： H04B7/0478 , H04B7/0465 , H04B7/0617 , H04B7/0639 , H04B7/0641
摘要： An embodiment of the present invention provides a method of using differential precoding feedback for correlated channels, comprising, transmitting by a mobile station (MS) as feedback an index angle for a differential discrete Fourier transform (DFT) codeword corresponding to a shift of a dominant beam represented by a base codeword, where the feedback corresponds to a precoding vector V(t)=Q({circumflex over (θ)}) for index angle {circumflex over (θ)}, where Q ⁡ ( θ ^ ) = [ 1 ⅇ j ⁢ ⁢ 2 ⁢ ⁢ π ⁢ ⁢ m / 32 ⅇ j ⁢ ⁢ 4 ⁢ ⁢ π ⁢ ⁢ m / 32 ⅇ j ⁢ ⁢ 6 ⁢ ⁢ π ⁢ ⁢ m / 32 ] and m=−16 cos({circumflex over (θ)}).
摘要翻译：本发明的一个实施例提供了一种使用用于相关信道的差分预编码反馈的方法，包括：由移动台（MS）作为对应于主导的移位的差分离散付里叶变换（DFT）码字的索引角的反馈，由基本码字表示的波束，其中反馈对应于用于索引角度（（θ））的预编码矢量V（t）= Q（{回旋（））），其中Q⁡（＆Thetas; ^ ）= [1ⅇj⁢2⁢＆pgr; ⁢m / 32ⅇj⁢4⁢＆pgr; 嗯m / 32ⅇj⁢6⁢＆pgr; ⁢m / 32]，m = -16 cos（{circum lex lex;;;;;））））}）

85. 发明授权

US08711907B2 PMI feedback with codebook interpolation 有权
标题翻译： PMI反馈与码本插值
公开(公告)号：US08711907B2
公开(公告)日：2014-04-29
申请号：US13077905
申请日：2011-03-31
申请人： Yuan Zhu , Xiaogang Chen , Qinghua Li
发明人： Yuan Zhu , Xiaogang Chen , Qinghua Li
IPC分类号： H04B1/38
CPC分类号： H04L25/03343 , H04B7/063 , H04B7/0639 , H04L1/0079 , H04L5/0007 , Y02D70/10
摘要： Various embodiments of this disclosure may describe apparatuses, methods, and systems for interpolation of precoding matrixes to increase feedback accuracy of the channel state information (CSI) feedback in a wireless communication network. Other embodiments may also be disclosed or claimed.
摘要翻译：本公开的各种实施例可以描述用于内插预编码矩阵的装置，方法和系统，以增加无线通信网络中的信道状态信息（CSI）反馈的反馈精度。其他实施例也可以被公开或要求保护。

86. 发明授权

US08483203B2 Techniques for formatting signals for transmission using a wireless network 失效
标题翻译：使用无线网络格式化信号进行传输的技术
公开(公告)号：US08483203B2
公开(公告)日：2013-07-09
申请号：US12962045
申请日：2010-12-07
申请人： Yuan Zhu , Qinghua Li , Xiangying Yang , Xiaogang Chen
发明人： Yuan Zhu , Qinghua Li , Xiangying Yang , Xiaogang Chen
IPC分类号： H04J3/00
CPC分类号： H04W72/042 , H04L1/1614 , H04L5/001 , H04L5/0016 , H04L5/003 , H04L5/0032 , H04L5/0051 , H04L5/0053 , H04L5/0064 , H04L5/0094 , H04L47/11 , H04L47/14 , H04L47/283 , H04L47/30 , H04W4/06 , H04W28/12 , H04W36/22 , H04W72/04 , H04W72/0406 , H04W72/0413 , H04W72/0446 , H04W72/0486 , H04W76/27 , Y02D30/30 , Y02D70/00 , Y02D70/1222 , Y02D70/1224 , Y02D70/1242 , Y02D70/1262 , Y02D70/1264 , Y02D70/142 , Y02D70/144 , Y02D70/146 , Y02D70/162 , Y02D70/168 , Y02D70/23 , Y02D70/24 , Y02D70/26
摘要： Techniques are described for forming signals for transmission to a receiver. Two transmitters can form resource blocks with different Physical Uplink Control Channel (PUCCH) demodulation reference signal (DMRS) patterns that are orthogonal over time and/or frequency to each other. The transmitters can simultaneously transmit the same resource block but with different DMRS patterns. If a receiver is mounted with two antennas, the receiver can utilize a MIMO receiver to differentiate resource blocks from two transmitters.
摘要翻译：描述了用于形成用于传输到接收器的信号的技术。两个发射机可以形成具有随时间和/或频率彼此正交的不同物理上行链路控制信道（PUCCH）解调参考信号（DMRS）模式的资源块。发射机可以同时传输相同的资源块，但具有不同的DMRS模式。如果接收机安装有两个天线，则接收机可以利用MIMO接收机来区分两个发射机的资源块。

87. 发明授权

US08462864B2 OFDM transmitter and methods for reducing the effects of severe interference with symbol loading 有权
标题翻译： OFDM发射机和减少符号加载严重干扰影响的方法
公开(公告)号：US08462864B2
公开(公告)日：2013-06-11
申请号：US12889651
申请日：2010-09-24
申请人： Qinghua Li , Huaning Niu , Yuan Zhu , Xintian E. Lin , Xiaogang Chen , Alexei Vladimirovich Davydov , Thomas J. Kenney , Eldad Perahia
发明人： Qinghua Li , Huaning Niu , Yuan Zhu , Xintian E. Lin , Xiaogang Chen , Alexei Vladimirovich Davydov , Thomas J. Kenney , Eldad Perahia
IPC分类号： H04L27/28 , H04L25/03 , H04B15/00
CPC分类号： H04B7/0617 , H04B7/0413 , H04L1/0606 , H04L25/08 , H04L27/2626 , H04L27/2634 , H04L27/3444 , H04W52/10 , H04W52/146 , H04W52/36 , H04W72/082
摘要： Embodiments of an OFDM transmitter and method of reducing the effects of interference on subcarriers in an OFDM system by symbol loading are disclosed herein. A linear transformation is performed on a group of two or more input data symbols to generate a corresponding two or more output data symbols. Each of the output data symbols has an increased number of constellation points and are configured for transmission within one of the different signal dimensions using two or more antennas. Each of the two or more output data symbols carry the information of each of the input data symbols of the group. This coding together of input data symbols that are mapped to different signal dimensions may provide improved reliability against fading and severe interference. The different signal dimensions may comprise a frequency, a time and/or a space dimension.
摘要翻译：本文公开了OFDM发射机的实施例和通过符号加载来减少OFDM系统中的干扰对子载波的影响的方法。对一组两个或更多个输入数据符号执行线性变换，以生成相应的两个或更多个输出数据符号。每个输出数据符号具有增加的星座点数量，并且被配置为使用两个或更多个天线在不同信号维度之一内传输。两个或更多个输出数据符号中的每一个携带该组的每个输入数据符号的信息。将映射到不同信号尺寸的输入数据符号进行编码可以提供改善的抗衰落和严重干扰的可靠性。不同的信号尺寸可以包括频率，时间和/或空间维度。

88. 发明授权

US08428633B2 Combined channel state information and combined channel quality indicator in wireless communication systems 失效
标题翻译：无线通信系统中组合信道状态信息和组合信道质量指标
公开(公告)号：US08428633B2
公开(公告)日：2013-04-23
申请号：US12873006
申请日：2010-08-31
申请人： Yuan Zhu , Qinghua Li , Xiaogang Chen
发明人： Yuan Zhu , Qinghua Li , Xiaogang Chen
IPC分类号： H04B7/00 , H04B17/00
CPC分类号： H04W24/10 , H04L1/0026 , H04L1/0029 , H04L1/0031 , H04L1/205 , H04L25/0212
摘要： Embodiments of methods and apparatus for estimating a channel state information (CSI) and a channel quality indicator (CQI) of a frame; determining a combined CSI and a combined CQI of the frame; and transmitting the CSI and the combined CQI are disclosed. Additional variants and embodiments are also disclosed.
摘要翻译：用于估计帧的信道状态信息（CSI）和信道质量指示符（CQI）的方法和装置的实施例; 确定所述帧的组合CSI和所述组合CQI; 并发送CSI和组合CQI。还公开了其它变型和实施方案。

89. 发明申请

US20190043388A1 Methods and apparatus for securing sounding symbols 审中-公开
公开(公告)号：US20190043388A1
公开(公告)日：2019-02-07
申请号：US15998726
申请日：2018-08-15
申请人： Qinghua Li , Yuan Zhu , Jonathan Segev , Robert Stacey , Xiaogang Chen , Feng Jiang
发明人： Qinghua Li , Yuan Zhu , Jonathan Segev , Robert Stacey , Xiaogang Chen , Feng Jiang
IPC分类号： G09C1/00 , H04W12/04 , H04L9/06
摘要： Methods, apparatus, and articles of manufacture to secure sounding symbols are described herein. An example apparatus includes a cipher to generate a bit value based on a common key and a seed value; a frame generator to generate a sounding signal based on the bit value; and an interface to instruct radio architecture to transmit the sounding signal.

90. 发明授权

US09954587B2 Multiple-input multiple-output cellular network communications 有权
公开(公告)号：US09954587B2
公开(公告)日：2018-04-24
申请号：US14784257
申请日：2014-03-27
申请人： Yuan Zhu , Qinghua Li , Xiaogang Chen , Hooman Shirani-Mehr
发明人： Yuan Zhu , Qinghua Li , Xiaogang Chen , Hooman Shirani-Mehr
IPC分类号： H04B7/0417 , H04W52/02 , H04L12/26 , H04W4/00 , H04W76/02 , H04L5/00 , H04W72/04 , H04W72/12 , H04W24/02 , H04W72/10 , H04W12/04 , H04L27/00 , H04W88/02 , H04L27/36
CPC分类号： H04B7/0417 , H04L5/0053 , H04L5/006 , H04L27/0008 , H04L27/362 , H04L43/16 , H04W4/70 , H04W12/04 , H04W24/02 , H04W52/0209 , H04W52/0216 , H04W52/0229 , H04W52/0235 , H04W72/0406 , H04W72/0413 , H04W72/0453 , H04W72/10 , H04W72/12 , H04W76/10 , H04W76/14 , H04W88/02 , Y02D70/00 , Y02D70/122 , Y02D70/1262 , Y02D70/1264 , Y02D70/142 , Y02D70/144 , Y02D70/146 , Y02D70/21 , Y02D70/23 , Y02D70/24
摘要： A technology for an enhanced node B (eNB) that is operable to perform beamforming using multiple-input multiple-output (MIMO) in a cellular network. One or more user equipment (UEs) can be configured to use a same or different multiple port (multi-port) channel state information reference signal (CSI-RS) pattern. Feedback reports can be received from the one or more UEs associated with the multi-port CSI-RS pattern at the eNB. A UE-specific or more UEs at the eNB using the feedback report from the one or more UEs.

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