公开(公告)号：US09762306B2

公开(公告)日：2017-09-12

申请号：US14911262

申请日：2014-06-27

Applicant: INTEL IP CORPORATION

Inventor： Xiaogang Chen ,  Yuan Zhu ,  Feng Xue ,  Hooman Shirani-Mehr ,  Qinghua Li

IPC: H04B7/06 ,  H04L5/14 ,  H04W56/00 ,  H04W4/00 ,  H04W52/02 ,  H04W76/04 ,  H04W36/08 ,  H04W72/08 ,  H04W76/02 ,  H04W36/28 ,  H04L5/00 ,  H04W24/10 ,  H04L1/18 ,  E04G23/02 ,  E04H9/02 ,  H04W16/26 ,  H04W24/02 ,  H04W48/16 ,  H04W8/02 ,  H04W36/32 ,  H04W64/00 ,  H04W72/04 ,  H04W4/02 ,  H04W36/14 ,  H04L27/26 ,  H04W88/08 ,  H04W48/12 ,  H04W74/08 ,  H04W88/04

CPC classification number: H04B7/0626 ,  E04G23/0218 ,  E04H9/025 ,  H04B7/0617 ,  H04B7/0639 ,  H04L1/1812 ,  H04L5/0048 ,  H04L5/0053 ,  H04L5/0058 ,  H04L5/006 ,  H04L5/14 ,  H04L5/1469 ,  H04L27/2602 ,  H04W4/023 ,  H04W4/70 ,  H04W8/02 ,  H04W16/26 ,  H04W24/02 ,  H04W24/10 ,  H04W36/08 ,  H04W36/14 ,  H04W36/28 ,  H04W36/32 ,  H04W48/12 ,  H04W48/16 ,  H04W52/0206 ,  H04W52/0209 ,  H04W52/0219 ,  H04W56/0005 ,  H04W64/006 ,  H04W72/0406 ,  H04W72/0446 ,  H04W72/082 ,  H04W74/0833 ,  H04W76/10 ,  H04W76/14 ,  H04W76/27 ,  H04W88/02 ,  H04W88/04 ,  H04W88/08 ,  Y02D70/00 ,  Y02D70/1224 ,  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

Abstract: Machine-readable media, methods, apparatus and system for electrical downtilt adjustment in a multiple input multiple output system are disclosed. In some embodiments, an apparatus may comprise an electrical downtilt module to determine an electrical downtilt angle for an antenna port selected from a number of antenna ports based on information from an user equipment (UE); and a codebook module to select a codeword corresponding to the antenna port from a codebook and calculate a weight of an antenna array of the eNB through inputting the electronic downtilt angle into the codeword, wherein the codebook has a first number of codewords, each of the codewords having a second number of elements to represent the weight of the antenna array, and wherein each of the codewords corresponds to each of the antenna ports and each of the elements corresponds to each antenna of the antenna array.

公开(公告)号：US09787376B2

公开(公告)日：2017-10-10

申请号：US14498517

申请日：2014-09-26

Applicant: Intel IP Corporation

Inventor： Yuan Zhu ,  Qinghua Li ,  Fangze Tu ,  Xiaogang Chen ,  Feng Xue

IPC: H04B7/04 ,  H04B7/06 ,  H04L25/02 ,  H04L5/00 ,  H04W88/02 ,  H04B7/0456 ,  H04W88/08

CPC classification number: H04B7/0456 ,  H04B7/0617 ,  H04B7/0639 ,  H04L1/0026 ,  H04L5/0051 ,  H04L25/0204 ,  H04W88/02 ,  H04W88/08

Abstract: According UE is configured to receive a channel state information reference signal (CSI-RS) from an evolved Universal Terrestrial Radio Access Network (E-UTRAN) Node B (eNB), determine channel state information based on the CSI-RS, and send the channel state information to the eNB. The channel state information includes a precoding matrix indicator corresponding to a first precoding matrix. The UE is also configured to receive a UE specific reference (UE-RS) signal and a physical downlink shared channel (PDSCH) signal. The UE-RS is precoded with a second precoding matrix. The UE estimates a UE-RS effective channel including the second precoding matrix based on the UE-RS and decodes data from the PDSCH signal based on an the first precoding matrix and the UE-RS effective channel.

公开(公告)号：US09730050B2

公开(公告)日：2017-08-08

申请号：US14766952

申请日：2013-12-16

Applicant: Intel IP Corporation

Inventor： Qinghua Li ,  Hooman Shirani-Mehr ,  Yuan Zhu ,  Xiaogang Chen ,  Feng Xue

IPC: H04B7/04 ,  H04B7/06 ,  H04W8/08 ,  H04L5/00 ,  H04B1/56 ,  H04W48/16 ,  H04W36/30 ,  H04W24/00 ,  H04W36/26 ,  H04W48/18 ,  H04B7/0417 ,  H04W36/00 ,  H04W36/22 ,  H04L1/18 ,  H04W24/02 ,  H04W72/04 ,  H04W72/08 ,  H04W28/20 ,  H04L29/06 ,  H04M1/725 ,  H04W4/02 ,  H04W8/02 ,  H04W8/06 ,  H04W28/02 ,  H04W76/02 ,  H04W48/06 ,  H04L25/03 ,  H04N21/24 ,  H04N21/845 ,  H04N21/8543 ,  H04B7/0452 ,  H04B7/08 ,  H04L25/02 ,  H04W36/08 ,  H04W48/12 ,  H04W88/08 ,  H04W84/04 ,  H04W88/10 ,  H04W84/12 ,  H04W88/02 ,  H04W28/08

CPC classification number: H04W8/082 ,  H04B1/56 ,  H04B7/0417 ,  H04B7/0452 ,  H04B7/0619 ,  H04B7/063 ,  H04B7/0695 ,  H04B7/088 ,  H04L1/1864 ,  H04L5/0007 ,  H04L5/0048 ,  H04L5/0051 ,  H04L5/0057 ,  H04L5/0085 ,  H04L25/0206 ,  H04L25/03305 ,  H04L47/803 ,  H04L65/4092 ,  H04L65/601 ,  H04L65/602 ,  H04L65/604 ,  H04L65/607 ,  H04L65/608 ,  H04L65/80 ,  H04L2025/03426 ,  H04M1/72572 ,  H04N21/2402 ,  H04N21/8456 ,  H04N21/8543 ,  H04W4/021 ,  H04W8/02 ,  H04W8/06 ,  H04W24/00 ,  H04W24/02 ,  H04W28/02 ,  H04W28/0226 ,  H04W28/0289 ,  H04W28/085 ,  H04W28/20 ,  H04W36/0005 ,  H04W36/0011 ,  H04W36/0022 ,  H04W36/08 ,  H04W36/22 ,  H04W36/26 ,  H04W36/30 ,  H04W48/06 ,  H04W48/12 ,  H04W48/16 ,  H04W48/18 ,  H04W56/001 ,  H04W72/0446 ,  H04W72/046 ,  H04W72/082 ,  H04W76/15 ,  H04W84/042 ,  H04W84/045 ,  H04W84/12 ,  H04W88/02 ,  H04W88/08 ,  H04W88/10 ,  Y02D70/00 ,  Y02D70/1224 ,  Y02D70/1242 ,  Y02D70/1244 ,  Y02D70/1246 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/162 ,  Y02D70/164 ,  Y02D70/168 ,  Y02D70/21 ,  Y02D70/23 ,  Y02D70/444

Abstract: In embodiments, apparatuses, methods, and storage media may be described for reducing the overhead associated with the transmission of channel training signals from an eNodeB (eNB) of a wireless network. Specifically, the eNB may receive feedback from a user equipment (UE) regarding the received signal energy of a first and second beamformed signal produced with a first and second beamforming vector, respectively. The eNB may identify, based on the feedback of the received signal energy, a signal subspace and a null subspace. The eNB may then transmit a channel training signal to the signal subspace.

公开(公告)号：US09647735B2

公开(公告)日：2017-05-09

申请号：US14784256

申请日：2013-12-12

Applicant: INTEL IP CORPORATION

Inventor： Masoud Sajadieh ,  Hooman Shirani-Mehr ,  Feng Xue ,  Qinghua Li

IPC: H04B7/02 ,  H04L1/02 ,  H04B7/0456 ,  H04B7/06 ,  H04B7/04 ,  H04W12/02 ,  H04W48/16 ,  H04W28/02 ,  H04B7/0452 ,  H04L27/20 ,  H04W92/24 ,  H04W4/00 ,  H04W76/02

CPC classification number: H04B7/0456 ,  H04B7/0452 ,  H04B7/0486 ,  H04B7/0617 ,  H04B7/0626 ,  H04B7/063 ,  H04B7/0632 ,  H04B7/0639 ,  H04L27/20 ,  H04W4/70 ,  H04W12/02 ,  H04W28/0289 ,  H04W48/16 ,  H04W76/14 ,  H04W92/24

Abstract: A hybrid digital and analog beamforming device for a node operable with an antenna array is disclosed. In an example, the hybrid digital and analog beamforming device can include computer circuitry configured to: Segment antenna elements of an antenna array into at least two groups of antenna elements; map antenna ports for transmission chains to one group of the antenna elements; constrain digital precoding weights for a digital precoder for the antenna elements, where the digital precoding weight includes a digital phase and amplitude; and determine analog precoding weights for an analog precoder for the antenna elements, where the analog precoding weight includes an analog phase.

公开(公告)号：US20190045406A1

公开(公告)日：2019-02-07

申请号：US16057079

申请日：2018-08-07

Applicant: Intel IP Corporation

Inventor： Rakesh Kalathil ,  Feng Xue ,  Vishnusudhan Raghupathy ,  Candy Yiu ,  Venkatesan Nallampatti Ekambaram

IPC: H04W36/00 ,  H04W64/00 ,  H04W36/38 ,  G05D1/10 ,  G05D1/00

Abstract: Techniques are described for improving handover performance in the context of UEs incorporated into unmanned aerial vehicles (UAVs, a.k.a., drones). A database is constructed that relates locations in a three-dimensional flying space to handover information that may include optimum scanning directions, optimum handover parameters, and/or optimum target cells to be monitored for possible handover.

公开(公告)号：US09585174B2

公开(公告)日：2017-02-28

申请号：US14231158

申请日：2014-03-31

Applicant: INTEL IP CORPORATION

Inventor： Yuan Zhu ,  Qinghua Li ,  Xiaogang Chen ,  Feng Xue ,  Hooman Shirani-Mehr

IPC: H04W76/02 ,  H04W52/02 ,  H04W4/00 ,  H04L5/14 ,  H04W76/04 ,  H04W36/00 ,  H04W24/08 ,  H04W72/08 ,  H04W72/04 ,  H04W74/08 ,  H04L29/06 ,  H04W24/02 ,  H04W16/28 ,  H04J11/00 ,  H04W24/10 ,  H04W36/30 ,  H04W84/12 ,  H04W88/06 ,  H04W88/08 ,  H04L5/00 ,  H04W84/18

CPC classification number: 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

Abstract: 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).

Abstract translation: 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。

公开(公告)号：US09270425B2

公开(公告)日：2016-02-23

申请号：US14135296

申请日：2013-12-19

Applicant: Intel IP Corporation

Inventor： Feng Xue ,  Jong-Kae Fwu ,  Alexei Vladimirovich Davydov

IPC: H04L5/00 ,  H04W48/16 ,  H04W72/08 ,  H04W28/04 ,  H04W56/00 ,  H04W84/18 ,  H04W28/08 ,  H04W40/24 ,  H04W80/04 ,  H04W80/02 ,  H04W8/00 ,  H04W88/02

CPC classification number: H04L5/0007 ,  H04B15/00 ,  H04J11/00 ,  H04L5/0005 ,  H04L5/0048 ,  H04L5/005 ,  H04L5/0073 ,  H04W8/005 ,  H04W28/04 ,  H04W28/08 ,  H04W40/246 ,  H04W48/16 ,  H04W56/002 ,  H04W72/0413 ,  H04W72/044 ,  H04W72/082 ,  H04W72/1215 ,  H04W80/04 ,  H04W84/042 ,  H04W84/18 ,  H04W88/02 ,  Y02D70/00 ,  Y02D70/1224 ,  Y02D70/1242 ,  Y02D70/1244 ,  Y02D70/1246 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/164 ,  Y02D70/166 ,  Y02D70/168 ,  Y02D70/21 ,  Y02D70/22 ,  Y02D70/23

Abstract: A method includes receiving at user equipment an indication of a subset of scheduling constraints for interference mitigation and cancelation and performing interference mitigation and cancelation utilizing the subset of scheduling constraints.

Abstract translation: 一种方法包括在用户设备处接收用于干扰减轻和消除的调度约束的子集的指示，并使用调度约束的子集执行干扰减轻和消除。

公开(公告)号：US20150195020A1

公开(公告)日：2015-07-09

申请号：US14498517

申请日：2014-09-26

Applicant: Intel IP Corporation

Inventor： Yuan Zhu ,  Qinghua Li ,  Fangze Tu ,  Xiaogang Chen ,  Feng Xue

IPC: H04B7/04 ,  H04L25/02 ,  H04L5/00

CPC classification number: H04B7/0456 ,  H04B7/0617 ,  H04B7/0639 ,  H04L1/0026 ,  H04L5/0051 ,  H04L25/0204 ,  H04W88/02 ,  H04W88/08

Abstract: According UE is configured to receive a channel state information reference signal (CSI-RS) from an evolved Universal Terrestrial Radio Access Network (E-UTRAN) Node B (eNB), determine channel state information based on the CSI-RS, and send the channel state information to the eNB. The channel state information includes a precoding matrix indicator corresponding to a first precoding matrix. The UE is also configured to receive a UE specific reference (UE-RS) signal and a physical downlink shared channel (PDSCH) signal. The UE-RS is precoded with a second precoding matrix. The UE estimates a UE-RS effective channel including the second precoding matrix based on the UE-RS and decodes data from the PDSCH signal based on an the first precoding matrix and the UE-RS effective channel.

Abstract translation: 根据UE被配置为从演进的通用陆地无线电接入网（E-UTRAN）节点B（eNB）接收信道状态信息参考信号（CSI-RS），基于CSI-RS确定信道状态信息，并发送 信道状态信息给eNB。 信道状态信息包括对应于第一预编码矩阵的预编码矩阵指示符。 UE还被配置为接收UE特定参考（UE-RS）信号和物理下行链路共享信道（PDSCH）信号。 UE-RS用第二预编码矩阵预编码。 UE基于UE-RS估计包括第二预编码矩阵的UE-RS有效信道，并且基于第一预编码矩阵和UE-RS有效信道对来自PDSCH信号的数据进行解码。