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    Power allocation and precoding matrix computation method in a wireless communication system
    2.
    发明授权
    Power allocation and precoding matrix computation method in a wireless communication system 有权

    公开(公告)号：US10757658B2

    公开(公告)日：2020-08-25

    申请号：US15576709

    申请日：2016-06-28

    申请人： Ping Liang

    发明人： Dengkui Zhu ,  Boyu Li ,  Ping Liang

    IPC分类号： H04B7/0452 ,  H04W72/04 ,  H04W52/24 ,  H04W52/34 ,  H04B7/06 ,  H04W88/08

    摘要： 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.

    Massive MIMO multi-user beamforming and single channel full duplex for wireless networks
    3.
    发明授权
    Massive MIMO multi-user beamforming and single channel full duplex for wireless networks 有权

    公开(公告)号：US10461814B2

    公开(公告)日：2019-10-29

    申请号：US15717872

    申请日：2017-09-27

    申请人： Ping Liang

    发明人： Ping Liang

    IPC分类号： H04W72/04 ,  H04B7/022 ,  H04W16/32 ,  H04L5/14 ,  H04B7/06 ,  H04B7/0456 ,  H04B1/10 ,  H04B7/0452 ,  H04W88/08

    摘要： This invention presents a method and apparatuses for wireless networking comprising one or more BS with Nbs antennas; two or more SCs in the range of a BS where a SC has Nsc antennas, uses Nsc1≤Nsc antennas for communication with a BS and uses Nsc2≤Nsc antennas for communication with one or more UEs; at the same time a BS transmitting DL signals to K SCs using multi-user transmit BF in a frequency channel, a SC simultaneously transmitting DL signals to one or more UEs in its range using the same frequency channel; and, at the same time a BS receiving UL signals from K SCs using multi-user receive BF in a frequency channel, a SC simultaneously receiving UL signals from one or more UEs in its range using the same frequency channel. Furthermore, beamforming using antennas on the SCs is performed to reduce the inter-SC interferences.

    Hybrid beamforming multi-antenna wireless systems
    4.
    发明授权
    Hybrid beamforming multi-antenna wireless systems 有权

    公开(公告)号：US10341014B2

    公开(公告)日：2019-07-02

    申请号：US15565679

    申请日：2016-04-12

    申请人： Ping Liang

    发明人： Dengkui Zhu ,  Boyu Li ,  Ping Liang

    IPC分类号： H04B7/204 ,  H04B7/0426 ,  H04B7/0452 ,  H04L5/22

    摘要： 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.

    POWER ALLOCATION AND PRECODING MATRIX COMPUTATION METHOD IN A WIRELESS COMMUNICATION SYSTEM
    6.
    发明申请
    POWER ALLOCATION AND PRECODING MATRIX COMPUTATION METHOD IN A WIRELESS COMMUNICATION SYSTEM 审中-公开

    公开(公告)号：US20180139703A1

    公开(公告)日：2018-05-17

    申请号：US15576709

    申请日：2016-06-28

    申请人： Dengkui Zhu ,  Boyu Li ,  Ping Liang

    发明人： Dengkui Zhu ,  Boyu Li ,  Ping Liang

    IPC分类号： H04W52/24 ,  H04W72/04 ,  H04B7/0452 ,  H04W52/34

    摘要： 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.

    SYMMETRIC AND FULL DUPLEX RELAY IN WIRELESS SYSTEMS
    7.
    发明申请
    SYMMETRIC AND FULL DUPLEX RELAY IN WIRELESS SYSTEMS 审中-公开

    公开(公告)号：US20180013483A1

    公开(公告)日：2018-01-11

    申请号：US15537874

    申请日：2016-01-16

    申请人： Ping LIANG

    发明人： Ping Liang ,  Junyang Shen ,  Yiming Ma ,  Lian Yin Zhang

    IPC分类号： H04B7/14 ,  H04B7/06 ,  H04L5/14 ,  H04L27/26

    摘要： This invention presents methods comprising a BS with a plural of antennas capable of beamforming two or more spatial multiplexed streams with two or more antennas on UEs; using one or more of relays to project the capacity of the BS to cover one or more UEs; the BS estimating the uplink channel state information (CSI) between each antenna on the BS and each antenna on the one or more UEs using pilots transmitted from the UE antennas in the presence of the relays which amplifies and forwards the one or more pilots; and, the BS making use of the perseverance of the reciprocity of the over the air channel by the symmetry of the DL and UL paths of the relays to obtain the downlink CSI using the estimated uplink CSI that includes the effect of the relays.

    MASSIVE MIMO MULTI-USER BEAMFORMING AND SINGLE CHANNEL FULL DUPLEX FOR WIRELESS NETWORKS
    8.
    发明申请
    MASSIVE MIMO MULTI-USER BEAMFORMING AND SINGLE CHANNEL FULL DUPLEX FOR WIRELESS NETWORKS 审中-公开
    大容量MIMO多用户波束和单通道全双工无线网络

    公开(公告)号：US20160301457A1

    公开(公告)日：2016-10-13

    申请号：US15036431

    申请日：2014-11-16

    申请人： Ping Liang

    发明人： Ping Liang

    IPC分类号： H04B7/06 ,  H04J11/00 ,  H04L5/14 ,  H04L12/26 ,  H04W52/24 ,  H04W16/32 ,  H04W72/04 ,  H04B7/04 ,  H04W72/12

    CPC分类号： H04B7/022 ,  H04B1/1018 ,  H04B7/0452 ,  H04B7/0456 ,  H04B7/0617 ,  H04J11/00 ,  H04J11/0023 ,  H04L5/14 ,  H04L43/028 ,  H04W16/32 ,  H04W52/244 ,  H04W72/0413 ,  H04W72/042 ,  H04W72/046 ,  H04W72/1226 ,  H04W88/02 ,  H04W88/08

    摘要： This invention presents a method and apparatuses for wireless networking comprising one or more BS with Nbs antennas; two or more SCs in the range of a BS where a SC has Nsc antennas, uses Nsc1≦Nsc antennas for communication with a BS and uses Nsc2≦Nsc antennas for communication with one or more UEs; at the same time a BS transmitting DL signals to K SCs using multi-user transmit BF in a frequency channel, a SC simultaneously transmitting DL signals to one or more UEs in its range using the same frequency channel; and, at the same time a BS receiving UL signals from K SCs using multi-user receive BF in a frequency channel, a SC simultaneously receiving UL signals from one or more UEs in its range using the same frequency channel. Furthermore, beamforming using antennas on the SCs is performed to reduce the inter-SC interferences.

    摘要翻译： 本发明提出了一种用于无线联网的方法和装置，其包括具有Nbs个天线的一个或多个BS; 在具有Nsc个天线的BS的范围内的两个或更多个SC使用Nsc1≤Nsc个天线来与BS进行通信，并且使用Nsc2≤Nsc个天线来与一个或多个UE进行通信; 在同一时刻，BS在频道中使用多用户发送BF向K SC发送DL信号，同时使用相同的频率信道向其一个或多个UE发射DL信号; 并且同时，BS在频道中使用多用户接收BF从K SC接收UL信号，同时使用相同的频率信道在其范围内从一个或多个UE同时接收UL信号。 此外，执行在SC上使用天线的波束成形以减少SC间干扰。

    WIRELESS REPEATER WITH FIR BASED CHANNEL EQUALIZER
    9.
    发明申请
    WIRELESS REPEATER WITH FIR BASED CHANNEL EQUALIZER 有权

    公开(公告)号：US20220029658A1

    公开(公告)日：2022-01-27

    申请号：US17305865

    申请日：2021-07-15

    申请人： RF DSP Inc.

    发明人： Junyang Shen ,  Ping Liang ,  Dengkui Zhu ,  Boyu Li

    IPC分类号： H04B1/7093 ,  H04L25/03 ,  H04W16/26 ,  H04B7/155 ,  H04L25/02 ,  H03F1/26 ,  H04B7/0413

    摘要： This invention presents a repeater enhanced MU-MIMO wireless communication system comprising a BS, a plural of repeaters, and a plural of UEs, where a repeater estimates the channel between itself and its upper communication node in the system, a repeater computes equalization coefficients based on the estimation of the channel coefficients, and a repeater applies the equalization coefficients to reduce the channel delay spread or increase the coherence bandwidth of the channel between communication nodes containing the BS, the UEs, or the repeaters.