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1.发明授权公开(公告)号：US11258495B2
公开(公告)日：2022-02-22
申请号：US16091984
申请日：2017-04-10
Applicant: Ping Liang
Inventor： Dengkui Zhu , Boyu Li , Ping Liang
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.
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公开(公告)号：US10826583B2
公开(公告)日：2020-11-03
申请号：US15715122
申请日：2017-09-25
Applicant: Dengkui Zhu , Ping Liang
Inventor： Dengkui Zhu , Ping Liang
IPC: H04B7/0456 , H04L25/03 , H04B7/0452 , H04L1/00 , H04B7/0417 , H04L25/02
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.
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3.发明授权公开(公告)号：US10757658B2
公开(公告)日：2020-08-25
申请号：US15576709
申请日：2016-06-28
Applicant: Ping Liang
Inventor： Dengkui Zhu , Boyu Li , Ping Liang
Abstract: This invention presents methods for power allocation for each data stream on each transmitting antennas in MU-MIMO wireless communication systems comprising the BS computing the temporary beamforming matrix, constructing special matrices and vectors with the maximum transmitting power on each antenna, the allocated power to each data stream, the channel quality of each data stream, and the amplitude of each element of the temporary beamforming matrix, calculating the power allocated to each data stream on each antenna with the calculated special matrices and vectors, and adjusting each element of the temporary beamforming matrix to obtain the final beamforming matrix.
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公开(公告)号：US10341014B2
公开(公告)日：2019-07-02
申请号：US15565679
申请日：2016-04-12
Applicant: Ping Liang
Inventor： Dengkui Zhu , Boyu Li , Ping Liang
IPC: H04B7/204 , H04B7/0426 , H04B7/0452 , H04L5/22
Abstract: This invention presents methods for MU-MIMO wireless communication systems comprising a BS with plural of antennas placed as a linear array or planar array, plural of UEs, for conducting two-level signal processing at the BS to reduce the system implementation complexity, i.e., the RF precoding/combination and the baseband precoding/detection, for the BS to obtain the second-order statistical information of the channel matrix of each UE to computing the RF precoding matrix through a much smaller number of pilots than that of the transceiving antennas at the BS, where the second-order statistical information of the channel matrix can be obtained through the uplink reference signals or downlink reference signals plus uplink feedback.
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公开(公告)号：US20180212711A1
公开(公告)日：2018-07-26
申请号：US15744425
申请日：2016-06-28
Applicant: Dengkui Zhu , Boyu Li , Ping Liang
Inventor： Dengkui Zhu , Boyu Li , Ping Liang
CPC classification number: H04L1/0026 , H04B7/0452 , H04L5/0048 , H04L5/0057 , H04W72/0413 , H04W72/085
Abstract: This invention presents a method for uplink SRS transmission in MU-MIMO wireless communication systems comprising the BS reserving resources for SRS transmission and multiplexing the reserved resources among neighboring cells and among multiple UEs allocated to the same SRS transmission resource; the BS estimating the CQI of each UE through the uplink channel; and the BS allocating the same resource to a group of UEs to transmit uplink SRSs based on the estimated CQI and the QoS requirement.
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Patent Agency Ranking
6.发明申请公开(公告)号：US20180139703A1
公开(公告)日：2018-05-17
申请号：US15576709
申请日：2016-06-28
Applicant: Dengkui Zhu , Boyu Li , Ping Liang
Inventor： Dengkui Zhu , Boyu Li , Ping Liang
IPC: H04W52/24 , H04W72/04 , H04B7/0452 , H04W52/34
Abstract: This invention presents methods for power allocation for each data stream on each transmitting antennas in MU-MIMO wireless communication systems comprising the BS computing the temporary beamforming matrix, constructing special matrices and vectors with the maximum transmitting power on each antenna, the allocated power to each data stream, the channel quality of each data stream, and the amplitude of each element of the temporary beamforming matrix, calculating the power allocated to each data stream on each antenna with the calculated special matrices and vectors, and adjusting each element of the temporary beamforming matrix to obtain the final beamforming matrix.
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7.发明申请公开(公告)号：US20220060232A1
公开(公告)日：2022-02-24
申请号：US17453833
申请日：2021-11-05
Applicant: Dengkui Zhu , Boyu Li , Ping Liang
Inventor： Dengkui Zhu , Boyu Li , Ping Liang
IPC: H04B7/06 , H04W16/28 , H04B7/0452 , H04W88/10
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.
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公开(公告)号：US10708012B1
公开(公告)日：2020-07-07
申请号：US16271808
申请日：2019-02-09
Applicant: Jason Brent , Dengkui Zhu , Ping Liang
Inventor： Jason Brent , Dengkui Zhu , Ping Liang
Abstract: This invention discloses methods and circuits of wideband wireless transmitting and/or receiving by combining multiple RF transmitters and/or receivers, or multiple transceivers, each of which has a narrower bandwidth, e.g., producing a RF transmitter and receiver or a RF transceiver whose signal bandwidth is the sum or approximately the sum, e.g., slightly less than the sum, of the signal bandwidth of the multiple RF transmitters and/or receivers, or multiple RF transceivers. The embodiments apply in wireless communication systems with orthogonal or approximately orthogonal subcarrier type of modulation (OSM), e.g., Orthogonal Frequency Division Multiplexing (OFDM).
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公开(公告)号：US10594377B2
公开(公告)日：2020-03-17
申请号：US16383603
申请日：2019-04-13
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.
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10.发明授权公开(公告)号：US10523348B2
公开(公告)日：2019-12-31
申请号：US15537879
申请日：2016-01-16
Applicant: Ping Liang
Inventor： Dengkui Zhu , Boyu Li , Ping Liang
IPC: H04L1/00 , H04B17/336 , H04L1/20 , H04B7/0417 , H04B7/0413 , H04B7/0452 , H04B7/06 , H04L5/00 , H04L25/02
Abstract: This invention presents methods for estimating the uplink SINR and channel estimation error level in MU-MIMO wireless communication systems comprising the BS obtaining the channel coefficients between each receiving antenna of a BS and a transmitting antenna of a UE in the uplink; for the BS estimating the SU-MIMO SINR of a UE using the channel coefficients between a UE and the BS; for the BS estimating the channel estimation error level of a UE using the channel coefficients between a UE and the BS.
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