公开(公告)号：US10454594B2

公开(公告)日：2019-10-22

申请号：US16077479

申请日：2017-02-17

Applicant: Ping Liang

Inventor： Ping Liang ,  Jason Brent ,  Dengkui Zhu

IPC: H04B17/00 ,  H04B7/0452 ,  H04B17/391

Abstract: This invention presents a RF channel emulator for testing a large-scale Multiple-User Multiple-Input Multiple-Output (MU-MIMO) wireless communication system, including embodiments of using over-the-air channels for connecting a RF channel emulator and a large-scale MU-MIMO wireless communication system, calibration processes that maintain the over-the-air channel reciprocity, and emulation of carrier aggregation.

公开(公告)号：US20190097700A1

公开(公告)日：2019-03-28

申请号：US15715122

申请日：2017-09-25

Applicant: Dengkui Zhu ,  Ping Liang

Inventor： Dengkui Zhu ,  Ping Liang

IPC: H04B7/04 ,  H04B7/0452 ,  H04L1/00 ,  H04B7/0417 ,  H04L25/02

CPC classification number: H04B7/0482 ,  H04B7/0417 ,  H04B7/0452 ,  H04L1/0003 ,  H04L1/0009 ,  H04L25/0224 ,  H04L25/03343 ,  H04L25/03974

Abstract: This invention presents methods for estimating MU-MIMO channel information using SU-MIMO channel information to choose a modulation and channel coding appropriate for the quality of the MU-MIMO channels, for adaptively selecting MU-MIMO precoding methods based on estimations of a plural of UEs and for compensating hardware impairments in MU-MIMO precoding.

公开(公告)号：US20190089431A1

公开(公告)日：2019-03-21

申请号：US15706777

申请日：2017-09-18

Applicant: Dengkui Zhu ,  Ping Liang

Inventor： Dengkui Zhu ,  Ping Liang

IPC: H04B7/04

CPC classification number: H04B7/0482 ,  H04B7/0452 ,  H04B7/0626 ,  H04B7/0632 ,  H04B7/0689 ,  H04W36/30

Abstract: This invention presents methods for estimating MU-MIMO channel information using SU-MIMO channel information to choose a modulation and channel coding appropriate for the quality of the MU-MIMO channels, for adaptively selecting MU-MIMO precoding methods based on estimations of a plural of UEs and for compensating hardware impairments in MU-MIMO precoding.

公开(公告)号：US20170244512A1

公开(公告)日：2017-08-24

申请号：US15503995

申请日：2015-09-25

Applicant: Ping Liang ,  Dengkui Zhu ,  Boyu Li

Inventor： Ping Liang ,  Dengkui Zhu ,  Boyu Li

IPC: H04L1/00 ,  H04L25/03 ,  H04B7/0452

CPC classification number: H04L1/0003 ,  H04B7/04 ,  H04B7/0452 ,  H04B7/0617 ,  H04L1/00 ,  H04L1/0009 ,  H04L25/03006 ,  H04L2025/03624

Abstract: This invention presents methods for signal detection and transmission in MU-MIMO wireless communication systems, for inverse matrix approximation error calculation, for adaptively selecting the number of multiplexed UEs in a MU-MIMO group, for adaptively choosing a modulation and channel coding scheme appropriate for the quality of MU-MIMO channels with the approximation error of matrix inverse being incorporated.

公开(公告)号：US20160323026A1

公开(公告)日：2016-11-03

申请号：US15102014

申请日：2014-12-20

Applicant: Dengkui Zhu ,  Ping Liang

Inventor： Dengkui Zhu ,  Ping Liang

IPC: H04B7/04 ,  H04W72/04 ,  H04W36/08 ,  H04L5/00 ,  H04B7/06 ,  H04L5/14

CPC classification number: H04B7/0482 ,  H04B7/0452 ,  H04B7/046 ,  H04B7/0626 ,  H04B7/0632 ,  H04L1/0026 ,  H04L5/0048 ,  H04L5/14 ,  H04W36/08 ,  H04W72/0413

Abstract: This invention presents methods for estimating MU-MIMO channel information using SU-MIMO channel information to choose a modulation and channel coding appropriate for the quality of the MU-MIMO channels, for adaptively selecting MU-MIMO precoding methods based on estimations of a plural of UEs and for compensating hardware impairments in MU-MIMO pre-coding.

Abstract translation: 本发明提供了使用SU-MIMO信道信息来估计MU-MIMO信道信息以选择适合于MU-MIMO信道的质量的调制和信道编码的方法，用于基于多个MIMO-MIMO信道估计的自适应选择MU-MIMO预编码方法 UE和用于补偿MU-MIMO预编码中的硬件损伤。

公开(公告)号：US20160315749A1

公开(公告)日：2016-10-27

申请号：US15101949

申请日：2014-12-20

Applicant: Ping LIANG

Inventor： Ping Liang ,  Dengkui Zhu

IPC: H04L5/00 ,  H04W72/08 ,  H04L5/14

CPC classification number: H04L5/0053 ,  H04L1/0026 ,  H04L5/0023 ,  H04L5/0035 ,  H04L5/14 ,  H04W72/0453 ,  H04W72/085

Abstract: This invention presents methods and circuits for a BS to acquire DL CSI in a FDD wireless network comprising switching the normal transmitting and receiving frequencies in a first and a second FDD apparatus, and using UL pilot signals to estimate the DL CSI based on reciprocity of the over the air channels.

Abstract translation: 本发明提出了用于BS在FDD无线网络中获取DL CSI的方法和电路，包括在第一和第二FDD设备中切换正常的发射和接收频率，并且使用UL导频信号基于 在空中通道。

公开(公告)号：US20220255677A1

公开(公告)日：2022-08-11

申请号：US17169451

申请日：2021-02-06

Applicant: Dengkui Zhu ,  Jason Brent ,  Boyu Li ,  Ping Liang

Inventor： Dengkui Zhu ,  Jason Brent ,  Boyu Li ,  Ping Liang

IPC: H04L1/18 ,  H04L1/00

Abstract: This invention discloses methods to enhance Physical Layer (PHY) processing in a radio access network between a Base Station (BS) and one or more User Equipment (UEs), including enhanced Hybrid Automatic Repeat Request (HARQ) management, transmitting path processing to reduce transfer bandwidth between an offload processor and a CPU, and offload processing to reduce HARQ latency.

公开(公告)号：US11283184B2

公开(公告)日：2022-03-22

申请号：US17141906

申请日：2021-01-05

Applicant: Ping Liang ,  Dengkui Zhu

Inventor： Ping Liang ,  Dengkui Zhu

IPC: H01Q15/18 ,  H01B7/04 ,  H01Q1/24 ,  H01Q1/52 ,  H04B7/0413 ,  H04B7/10 ,  H01Q21/26 ,  H01Q21/24 ,  H04B17/391

Abstract: This invention presents embodiments of a coupler array to couple the RF signals between the antenna array of a MIMO base station and a MIMO RF channel emulator. The embodiments enable testing of a large scale MIMO wireless communication system without the need of connecting a large number of RF cables to the antenna ports of the MIMO base station.

公开(公告)号：US11012136B2

公开(公告)日：2021-05-18

申请号：US16407174

申请日：2019-05-08

Applicant: Ping Liang ,  Dengkui Zhu ,  Boyu Li ,  Yiming Ma

Inventor： Ping Liang ,  Dengkui Zhu ,  Boyu Li ,  Yiming Ma

IPC: H04B7/06 ,  H04B7/08 ,  H04B17/336 ,  H04B7/0452 ,  H04B7/0456 ,  H04B7/155 ,  H04L5/00 ,  H04L25/02 ,  H04L29/06 ,  H04W16/28 ,  H04L5/14 ,  H04W84/18 ,  H04W88/08

Abstract: This invention presents methods for MU-MIMO wireless communication systems comprising a BS with plural of antennas, either closely located or distributed; A plural of AFRs deployed over a coverage area, each AFR has NBF≥1 BF antennas with a beam pattern facing the MU-BFer and NUF≥1 UF antennas with a beam pattern facing UEs or downstream AFR(s); A channel estimation module for estimating the Total Channels between a plural of UEs and the BS with the AFRs in place; and, A MU-BFer that uses the estimates of the Total Channels to perform beamforming computations for transmitting and/or receiving multiple spatially multiplexed streams of signals to or from a plural of UEs using the same frequency resource.

公开(公告)号：US10756828B2

公开(公告)日：2020-08-25

申请号：US16214078

申请日：2018-12-09

Applicant: Ping Liang ,  Dengkui Zhu

Inventor： Ping Liang ,  Dengkui Zhu

IPC: H04B17/00 ,  H04B7/0456 ,  H04L5/00 ,  H04B7/0452 ,  H04B7/06 ,  H04B7/10 ,  H04B17/318

Abstract: This invention presents a RF channel emulator for testing a millimeter wave (mmWave) wireless communication system, including embodiments of using over-the-air channels for connecting a RF channel emulator and mmWave wireless communication system, placement of antenna arrays, antenna array design, antenna selection, and polarization matrices estimation that complete both the beam scanning at the BS and UEs and normal data transmission.