公开(公告)号：US20180026765A1

公开(公告)日：2018-01-25

申请号：US15537877

申请日：2016-01-16

Applicant: Jason Brent ,  Dengkui Zhu ,  Ping Liang

Inventor： Jason Brent ,  Dengkui Zhu ,  Ping Liang

IPC: H04L5/00 ,  H04W72/04 ,  H04B7/06 ,  H04B7/0452 ,  H04B7/0456

CPC classification number: H04L5/0048 ,  H04B7/04 ,  H04B7/0452 ,  H04B7/0456 ,  H04B7/0617 ,  H04B7/0626 ,  H04L5/0007 ,  H04W72/042

Abstract: This invention provides SRS transmission methods to meet the Massive MIMO systems requirements. These methods are described in two separate categories. Firstly, enhancements to multiplex more channels in the same resources for a given SRS transmission and to provide Massive MIMO throughput performance improvements. Secondly, scheduling enhancements to provide adaptive UE-specific scheduling based on channel conditions for each UE. These methods can be combined in different ways in each BS to optimize the channel estimation system capacity for a given level of system performance.

公开(公告)号：US20170257155A1

公开(公告)日：2017-09-07

申请号：US15518149

申请日：2016-01-16

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

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

IPC: H04B7/06 ,  H04B7/155 ,  H04L25/02 ,  H04W16/28 ,  H04L29/06 ,  H04B17/336 ,  H04L5/00 ,  H04B7/0452 ,  H04B7/0456

CPC classification number: H04B7/0695 ,  H04B7/0452 ,  H04B7/0456 ,  H04B7/0617 ,  H04B7/088 ,  H04B7/15507 ,  H04B17/336 ,  H04L5/0048 ,  H04L5/14 ,  H04L25/0202 ,  H04L69/22 ,  H04W16/28 ,  H04W84/18 ,  H04W88/085

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：US11695517B2

公开(公告)日：2023-07-04

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: H04L1/00 ,  H04L1/1812 ,  H04L1/1867

CPC classification number: H04L1/1819 ,  H04L1/0061 ,  H04L1/1874 ,  H04L1/1896

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：US10931023B2

公开(公告)日：2021-02-23

申请号：US16091987

申请日：2017-07-14

Applicant: Ping Liang ,  Dengkui Zhu

Inventor： Ping Liang ,  Dengkui Zhu

IPC: H01Q15/18 ,  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：US10897286B2

公开(公告)日：2021-01-19

申请号：US16212699

申请日：2018-12-07

Applicant: Ping Liang ,  Dengkui Zhu

Inventor： Ping Liang ,  Dengkui Zhu

IPC: H04B7/0452 ,  H04B7/06 ,  H04W72/04 ,  H04B17/309 ,  H01Q25/00 ,  H04B17/318 ,  H04W88/02 ,  H04W88/08

Abstract: This invention presents methods and systems for RF path and antenna connection and switch in wireless communication comprising an electromagnetic lens and M antennas; N (N

公开(公告)号：US10523406B2

公开(公告)日：2019-12-31

申请号：US15576707

申请日：2016-06-28

Applicant: Ping Liang

Inventor： Ping Liang ,  Dengkui Zhu

IPC: H04L5/14 ,  H04B7/06 ,  H04L5/00 ,  H04B7/08 ,  H04B7/022 ,  H04B7/0413 ,  H04W72/12 ,  H04W88/02 ,  H04W88/08

Abstract: This invention presents methods for wireless communication systems implementing SCFD operation comprising adaptively configuring FDPs based on the directional antennas at each BS; measuring the interference levels among UEs located in areas covered by an FDP and determining the UE group that transmits and receives data on the same time-frequency resource(s) under the same FDP; and measuring the channels among neighboring BSs to cancel the interferences between two BSs with SCFD operations.

公开(公告)号：US20190312625A1

公开(公告)日：2019-10-10

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 ,  H04B17/336 ,  H04B7/0452 ,  H04B7/0456 ,  H04W16/28 ,  H04L5/00 ,  H04B7/08 ,  H04L25/02 ,  H04L29/06 ,  H04B7/155

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：US10340995B2

公开(公告)日：2019-07-02

申请号：US15911163

申请日：2018-03-30

Applicant: Ping Liang ,  Dengkui Zhu ,  Boyu Li

Inventor： Ping Liang ,  Dengkui Zhu ,  Boyu Li

IPC: H04B7/06 ,  H04B7/0452

Abstract: This invention provides methods for Distributed Massive MIMO (DM-MIMO) that use one or more central Baseband Units (BBUs), one or more Multi-User Beamformers for each BBU performing multi-user MIMO computations, and a number of RRHs distributed over a geographic area.

公开(公告)号：US20190181963A1

公开(公告)日：2019-06-13

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 ,  H04B7/10 ,  H04B7/0452 ,  H04B7/06 ,  H04L5/00

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.

公开(公告)号：US20190181943A1

公开(公告)日：2019-06-13

申请号：US16212704

申请日：2018-12-07

Applicant: Ping Liang ,  Dengkui Zhu ,  Boyu Li

Inventor： Ping Liang ,  Dengkui Zhu ,  Boyu Li

IPC: H04B7/155 ,  H04W16/26 ,  H04B7/024 ,  H04B7/0452 ,  H04W16/28 ,  H04L25/02

Abstract: This invention presents a millimeter wave (mmWave) Distributed Wireless Smart Antenna (DWSA) or scanning-capable repeater that can form different radio wave beam patterns to scan for spatial beam direction(s) or beam alignment to build one or more mmWave wireless links with one or more User Equipment, and complete pass-through beamforming with one or more central base stations.