公开(公告)号：US10797776B2

公开(公告)日：2020-10-06

申请号：US15881786

申请日：2018-01-28

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 N_BF≥1 BF antennas with a beam pattern facing the MU-BFer and N_UF≥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：US20190356361A1

公开(公告)日：2019-11-21

申请号：US16528568

申请日：2019-07-31

Applicant: Ping Liang ,  Dengkui Zhu

Inventor： Ping Liang ,  Dengkui Zhu

IPC: H04B7/024 ,  H04B7/06 ,  H04B7/0452 ,  H04B7/0417 ,  H04B17/318

Abstract: This invention presents Capacity Projectors (CaPs) for intelligent control and management that collect information on channel conditions, actual and/or predicted demand for connectivity, data throughput and its distribution for a first time period in the future using signaling and control messages, analyze the collected information to identify the configurations of the BSs and CaPs that are needed to produce desired MU-MIMO communication channels in the first time period to meet the connectivity and data throughput demand and its distribution in the first time period, and adaptively control and configure the CaPs to actively shape the MU-MIMO communication channels to meet the predicted demand and its distribution, wherein controlling and configuring the CaP comprises implementing which of the CaPs to switch to sleeping mode or work mode and adjusting one or more of transmitting power gain, antenna tilt, beam direction and/or pattern of the transmitter and/or receiver, filtering of the receiving and/or transmitting signal.

公开(公告)号：US10461820B2

公开(公告)日：2019-10-29

申请号：US16091986

申请日：2017-07-09

Applicant: Ping Liang

Inventor： Ping Liang ,  Dengkui Zhu ,  Boyu Li

IPC: H04L5/12 ,  H04B7/0452 ,  H04B7/06 ,  H04L5/14 ,  H04B7/0456 ,  H04B7/08

Abstract: This invention presents a Wireless Smart Antenna apparatus (WSA) comprising a Base Station Side Radio Unit (BSSRU) and a User Equipment Side Radio Unit (UESRU), wherein if a BSSRU is distributed in the coverage area of a Base Station (BS), the BSSRU communicates with one or more (BSs) using a first frequency band F1 and simultaneously communicates with one or more UESRUs using a second frequency band F2, or if a BSSRU is integrated into a BS, the BSSRU communicates with the BS baseband through circuits and communicates with one or more UESRUs using the second frequency band F2, wherein a UESRU communicates with one or more distributed or integrated BSSRUs using the second frequency band F2 and simultaneously communicates with one or more User Equipment (UEs) using the first frequency band F1, wherein one or more WSAs enable Multi-User Multiple Input Multiple Output spatial multiplexing in the F1 frequency band with UEs distributed over their coverage areas.

公开(公告)号：US10419091B2

公开(公告)日：2019-09-17

申请号：US15706777

申请日：2017-09-18

Applicant: Dengkui Zhu ,  Ping Liang

Inventor： Dengkui Zhu ,  Ping Liang

IPC: H04B7/0456 ,  H04B7/0452 ,  H04W36/30 ,  H04B7/06

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：US10341043B2

公开(公告)日：2019-07-02

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 ,  H04B7/04 ,  H04B7/0452 ,  H04B7/06 ,  H04L25/03

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：US20190115963A1

公开(公告)日：2019-04-18

申请号：US16091984

申请日：2017-04-10

Applicant: Ping LIANG

Inventor： Dengkui Zhu ,  Boyu Li ,  Ping Liang

IPC: H04B7/06 ,  H04W16/28 ,  H04W88/10 ,  H04B7/0452

Abstract: This invention presents a method and systems for beamforming in wireless communication comprising a base station with a plural of antennas and radio frequency transmitting and receiving chains, a plural of base band transmitting paths and base band receiving paths, and a processor that constructs a subspace for each user equipment using the principal angle information contained in partial channel state information obtained on channels associated with a part of the BS antennas, derives an analog beamforming matrix and/or an analog combining matrix from the subspaces of all the user equipment selected for communication with the base station to achieve analog beamforming, and further performs beamforming at the base band.

公开(公告)号：US20190115958A1

公开(公告)日：2019-04-18

申请号：US16091986

申请日：2017-07-09

Applicant: Ping Liang ,  Dengkui Zhu ,  Boyu Li

Inventor： Ping Liang ,  Dengkui Zhu ,  Boyu Li

IPC: H04B7/0452 ,  H04B7/06 ,  H04B7/08 ,  H04L5/14 ,  H04B7/0456

CPC classification number: H04B7/0452 ,  H04B7/0456 ,  H04B7/0697 ,  H04B7/0897 ,  H04L5/14

Abstract: This invention presents a Wireless Smart Antenna apparatus (WSA) comprising a Base Station Side Radio Unit (BSSRU) and a User Equipment Side Radio Unit (UESRU), wherein if a BSSRU is distributed in the coverage area of a Base Station (BS), the BSSRU communicates with one or more (BSs) using a first frequency band F1 and simultaneously communicates with one or more UESRUs using a second frequency band F2, or if a BSSRU is integrated into a BS, the BSSRU communicates with the BS baseband through circuits and communicates with one or more UESRUs using the second frequency band F2, wherein a UESRU communicates with one or more distributed or integrated BSSRUs using the second frequency band F2 and simultaneously communicates with one or more User Equipment (UEs) using the first frequency band F1, wherein one or more WSAs enable Multi-User Multiple Input Multiple Output spatial multiplexing in the F1 frequency band with UEs distributed over their coverage areas.

公开(公告)号：US20190115667A1

公开(公告)日：2019-04-18

申请号：US16091987

申请日：2017-07-14

Applicant: Ping Liang ,  Dengkui Zhu

Inventor： Ping Liang ,  Dengkui Zhu

IPC: H01Q15/18 ,  H04B7/0413 ,  H01Q21/24 ,  H04B7/10 ,  H01Q1/52 ,  H01Q1/24

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：US20190074913A1

公开(公告)日：2019-03-07

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

CPC classification number: H04B17/0087 ,  H04B7/0452 ,  H04B17/0085 ,  H04B17/3912

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：US20180351605A1

公开(公告)日：2018-12-06

申请号：US16073330

申请日：2017-01-28

Applicant: Ping LIANG

Inventor： Ping Liang ,  Dengkui Zhu

IPC: H04B7/024 ,  H04B7/06 ,  H04B17/318 ,  H04B7/0452 ,  H04B7/0417

CPC classification number: H04B7/024 ,  H04B7/0417 ,  H04B7/0452 ,  H04B7/0617 ,  H04B17/318

Abstract: This invention presents Capacity Projectors (CaPs) for intelligent control and management that collect information on channel conditions, actual and/or predicted demand for connectivity, data throughput and its distribution for a first time period in the future using signaling and control messages, analyze the collected information to identify the configurations of the BSs and CaPs that are needed to produce desired MU-MIMO communication channels in the first time period to meet the connectivity and data throughput demand and its distribution in the first time period, and adaptively control and configure the CaPs to actively shape the MU-MIMO communication channels to meet the predicted demand and its distribution, wherein controlling and configuring the CaP comprises implementing which of the CaPs to switch to sleeping mode or work mode and adjusting one or more of transmitting power gain, antenna tilt, beam direction and/or pattern of the transmitter and/or receiver, filtering of the receiving and/or transmitting signal.