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    Method and system for predicting a downlink channel
    22.
    发明授权
    Method and system for predicting a downlink channel 有权

    公开(公告)号：US11523396B2

    公开(公告)日：2022-12-06

    申请号：US17376804

    申请日：2021-07-15

    Applicant: AT&T Intellectual Property I, L.P.

    Inventor： Ernest Tsui ,  Paul Maxwell

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

    Abstract: Aspects of the subject disclosure may include, for example, receiving a plurality of orthogonal sounding reference signals (SRS) from a plurality of user equipment (UEs), wherein each SRS of the plurality of orthogonal SRS is provided by a respective UE of the plurality of UEs, determining a downlink (DL) channel, in frequency division duplex (FDD), using spatial correlations relating to the plurality of UEs, wherein the spatial correlations are based on the plurality of orthogonal SRS, calculating a plurality of DL precoding weights for a plurality of coherent modular antenna panels responsive to the determining the DL channel, and applying the plurality of DL precoding weights to the plurality of coherent modular antenna panels to enable multi-user (Mu)-multiple-input-multiple-output (MIMO) for the plurality of UEs. Other embodiments are disclosed.

    METHOD AND SYSTEM FOR DETERMINING UPLINK AND DOWNLINK WEIGHTS FOR ANTENNA ELEMENTS OF MODULAR ANTENNA ARRAYS
    24.
    发明申请
    METHOD AND SYSTEM FOR DETERMINING UPLINK AND DOWNLINK WEIGHTS FOR ANTENNA ELEMENTS OF MODULAR ANTENNA ARRAYS 有权

    公开(公告)号：US20220278730A1

    公开(公告)日：2022-09-01

    申请号：US17376726

    申请日：2021-07-15

    Applicant: AT&T Intellectual Property I, L.P.

    Inventor： Ernest Tsui ,  Paul Maxwell

    IPC: H04B7/06 ,  H04B7/0452 ,  H04L5/00 ,  H04L25/02 ,  H04W72/04 ,  H04B7/0426

    Abstract: Aspects of the subject disclosure may include, for example, receiving sounding reference signal (SRS) symbols from antenna elements of each of multiple modular antenna arrays, wherein the multiple modular antenna arrays are operatively combined to form a coherent antenna system, performing an uplink (UL) channel estimation and a downlink (DL) channel estimation, across a plurality of physical resource blocks (PRBs), based on the SRS symbols, calculating, for the antenna elements, a plurality of uplink (UL) combining weights based on the UL channel estimation and a plurality of downlink (DL) precoder weights based on the DL channel estimation, and causing the plurality of UL combining weights and the plurality of DL precoder weights to be applied to the antenna elements, thereby adjusting beamforming of the coherent antenna system. Other embodiments are disclosed.

    METHOD AND SYSTEM FOR UPLINK BEAM OPTIMIZATION AND CALIBRATION
    25.
    发明申请
    METHOD AND SYSTEM FOR UPLINK BEAM OPTIMIZATION AND CALIBRATION 有权

    公开(公告)号：US20220278729A1

    公开(公告)日：2022-09-01

    申请号：US17376831

    申请日：2021-07-15

    Applicant: AT&T Intellectual Property I, L.P.

    Inventor： Ernest Tsui ,  Paul Maxwell

    IPC: H04B7/06 ,  H04B7/08

    Abstract: Aspects of the subject disclosure may include, for example, obtaining, over an uplink (UL) using an aggregation of modular antenna arrays, a modulated signal that includes feedback transmitted by a user equipment (UE), wherein the aggregation of modular antenna arrays comprises multiple groups of antenna elements, after the obtaining the modulated signal, performing a demodulation of the modulated signal, determining demodulator constellation errors from the demodulation of the modulated signal, performing an error gradient weight adaptation responsive to the determining the demodulator constellation errors to derive revised weights for various antenna elements of the multiple groups of antenna elements, and applying the revised weights to the various antenna elements of the multiple groups of antenna elements to adjust signals received over the UL. Other embodiments are disclosed.

    METHOD AND SYSTEM FOR CONTROLLING UPLINK TRANSMIT POWER
    26.
    发明申请
    METHOD AND SYSTEM FOR CONTROLLING UPLINK TRANSMIT POWER 有权

    公开(公告)号：US20220278715A1

    公开(公告)日：2022-09-01

    申请号：US17376786

    申请日：2021-07-15

    Applicant: AT&T Intellectual Property I, L.P.

    Inventor： Ernest Tsui

    IPC: H04B7/0452 ,  H04B7/06 ,  H04B17/318 ,  H04B17/336 ,  H04L5/14

    Abstract: Aspects of the subject disclosure may include, for example, receiving, over an uplink (UL) via a combination of coherent modular antenna arrays, first transmissions from a first user equipment (UE) and second transmissions from a second UE, wherein the first UE and the second UE are being served by the cell in multi-user (Mu)-multiple-input-multiple-output (MIMO) mode, determining, based on the first transmissions and the second transmissions, that a probability of the second UE interfering with the first UE in the UL satisfies a particular threshold, responsive to the determining, identifying an adjustment to an UL transmit power for the first UE, and causing the first UE to implement the adjustment to the UL transmit power. Other embodiments are disclosed.

    METHOD AND SYSTEM FOR DETERMINING MULTIPLE-INPUT-MULTIPLE-OUTPUT (MIMO) MODES
    27.
    发明申请
    METHOD AND SYSTEM FOR DETERMINING MULTIPLE-INPUT-MULTIPLE-OUTPUT (MIMO) MODES 有权

    公开(公告)号：US20220278714A1

    公开(公告)日：2022-09-01

    申请号：US17376764

    申请日：2021-07-15

    Applicant: AT&T Intellectual Property I, L.P.

    Inventor： Ernest Tsui

    IPC: H04B7/0417 ,  H04B7/0452 ,  H04B7/0456 ,  H04B7/06

    Abstract: Aspects of the subject disclosure may include, for example, identifying a coherence time associated with a user equipment (UE) and a coherence bandwidth associated with the UE, determining a coherence block based on the coherence time and the coherence bandwidth, determining whether the coherence block satisfies a threshold, based on a first determination that the coherence block satisfies the threshold, employing a plurality of modular antenna arrays in multi-user (Mu)-multiple-input-multiple-output (MIMO) for the UE, and, based on a second determination that the coherence block does not satisfy the threshold, employing the plurality of modular antenna arrays in single-user (Su)-MIMO for the UE. Other embodiments are disclosed.

    UNIFIED SELF-OPTIMIZING NETWORK TO INCREASE CELL EDGE PERFORMANCE
    28.
    发明申请
    UNIFIED SELF-OPTIMIZING NETWORK TO INCREASE CELL EDGE PERFORMANCE 有权

    公开(公告)号：US20220132336A1

    公开(公告)日：2022-04-28

    申请号：US17646734

    申请日：2022-01-03

    Applicant: AT&T INTELLECTUAL PROPERTY I, L.P.

    Inventor： Ernest Tsui ,  Guanying Ru ,  Rennie Archibald ,  Weihua Ye

    IPC: H04W24/02 ,  H04B17/373 ,  H04W16/28 ,  H04W24/08

    Abstract: The described technology is generally directed towards jointly optimizing coverage, capacity, and layer balance in a wireless communications network while maintaining cell edge use device performance constraints. Aspects comprise monitoring edge user devices for performance information, and modifying the network based on the performance information, including jointly optimizing by changing antenna parameter data, layer balancing, handover biasing per cell neighbor pair, modifying scheduling priorities, and optimizing sector face harmonic throughput. Balancing uplink and downlink coverages are considered in the joint optimization. Further, interference is detected, predicted (as needed) and mitigated.

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