Paul W F Maxwell

US Patent:

20220278448, Sep 1, 2022

Filed:

Jul 15, 2021

Appl. No.:

17/376793

Inventors:

- Atlanta GA, US
Paul Maxwell - Alamo CA, US
Brian Gavin - Sammamish WA, US

Assignee:

AT&T Intellectual Property I, L.P. - Atlanta GA

International Classification:

H01Q 3/26
H04B 17/12
H04B 7/0452

Abstract:

Aspects of the subject disclosure may include, for example, causing a reference antenna element of a first set of antenna elements of a first antenna array to transmit a first signal, determining for each antenna element of a second set of antenna elements of a second antenna array, a receive-related offset, relative to the reference element, based on inter-element propagation delays between the first and second sets of elements, causing each antenna element of the second set of elements to transmit a respective second signal, based on the reference antenna element receiving the respective second signals, calculating a respective transmit-related offset for each antenna element of the second set of antenna elements relative to the reference antenna element based on the inter-element propagation delays, and performing calibration between the first antenna array and the second antenna array based on the respective receive-related and transmit-related offsets. Other embodiments are disclosed.

US Patent:

20220278729, Sep 1, 2022

Filed:

Jul 15, 2021

Appl. No.:

17/376831

Inventors:

- Atlanta GA, US
Paul Maxwell - Alamo CA, US

Assignee:

AT&T Intellectual Property I, L.P. - Atlanta GA

International Classification:

H04B 7/06
H04B 7/08

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.

US Patent:

20220278730, Sep 1, 2022

Filed:

Jul 15, 2021

Appl. No.:

17/376726

Inventors:

- Atlanta GA, US
Paul Maxwell - Alamo CA, US

Assignee:

AT&T Intellectual Property I, L.P. - Atlanta GA

International Classification:

H04B 7/06
H04B 7/0452
H04L 5/00
H04L 25/02
H04W 72/04
H04B 7/0426

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.

US Patent:

20220279501, Sep 1, 2022

Filed:

Jul 15, 2021

Appl. No.:

17/376804

Inventors:

- Atlanta GA, US
Paul Maxwell - Alamo CA, US

Assignee:

AT&T Intellectual Property I, L.P. - Atlanta GA

International Classification:

H04W 72/04
H04B 7/0452
H04B 7/0456
H04L 5/00

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.

US Patent:

20220279520, Sep 1, 2022

Filed:

Jul 15, 2021

Appl. No.:

17/376720

Inventors:

- Atlanta GA, US
Paul Maxwell - Alamo CA, US

Assignee:

AT&T Intellectual Property I, L.P. - Atlanta GA

International Classification:

H04W 72/08
H04B 7/0452
H01Q 3/26
H04L 5/14

Abstract:

Aspects of the subject disclosure may include, for example, performing a beam sweep in a downlink (DL) using an aggregation of modular antenna arrays, wherein each modular antenna array of the aggregation of modular antenna arrays comprises a set of antenna elements, resulting in multiple sets of antenna elements, and wherein the aggregation of modular antenna arrays is operated in multi-user (Mu)-multiple-input-multiple-output (MIMO) mode in which parallel transmissions are facilitated for a plurality of user equipment (UEs), after the performing the beam sweep, receiving, in an uplink (UL), a passive intermodulation (PIM) response associated with a PIM source, determining adjustments for particular antenna elements of the multiple sets of antenna elements based on the PIM response, and causing the particular antenna elements to be operated based on the adjustments when facilitating the parallel transmissions for the plurality of UEs. Other embodiments are disclosed.

US Patent:

20230050488, Feb 16, 2023

Filed:

Nov 1, 2022

Appl. No.:

17/978411

Inventors:

- Atlanta GA, US
Paul Maxwell - Alamo CA, US
Brian Gavin - Sammamish WA, US

Assignee:

AT&T Intellectual Property I, L.P. - Atlanta GA

International Classification:

H04L 25/02
H04B 7/06
H04B 17/318
H04W 24/08
H04L 5/14
H04W 72/12
H04B 7/0417
H01Q 3/26
H04L 43/0888
H04B 17/12
H04B 7/08
H04B 7/0452
H04B 7/0456
H04W 72/04
H04L 5/00
H04W 24/02
H04W 16/28
H04W 84/04
G06N 20/00
H04B 7/0426
H04B 17/336
H04W 72/08
H04B 17/309
H04W 52/14
H04W 52/26
H04L 43/16
H04J 11/00

Abstract:

Aspects of the subject disclosure may include, for example, causing a reference antenna element of a first set of antenna elements of a first antenna array to transmit a first signal, determining for each antenna element of a second set of antenna elements of a second antenna array, a receive-related offset, relative to the reference element, based on inter-element propagation delays between the first and second sets of elements, causing each antenna element of the second set of elements to transmit a respective second signal, based on the reference antenna element receiving the respective second signals, calculating a respective transmit-related offset for each antenna element of the second set of antenna elements relative to the reference antenna element based on the inter-element propagation delays, and performing calibration between the first antenna array and the second antenna array based on the respective receive-related and transmit-related offsets. Other embodiments are disclosed.

US Patent:

20230038585, Feb 9, 2023

Filed:

Oct 19, 2022

Appl. No.:

17/969529

Inventors:

- Atlanta GA, US
Paul Maxwell - Alamo CA, US

Assignee:

AT&T Intellectual Property I, L.P. - Atlanta GA

International Classification:

H04L 25/02
H04L 5/14
H04B 7/06
H04B 17/318
H04B 17/336
H04B 7/0452
G06N 20/00
H04B 7/0426
H04B 7/0456
H04W 24/02
H04W 72/04
H04W 72/12
H04W 84/04
H04L 5/00
H04B 7/08
H01Q 3/26
H04W 72/08
H04B 7/0417
H04B 17/309
H04L 43/0888
H04L 43/16
H04W 52/14
H04W 52/26
H04W 16/28
H04W 24/08
H04B 17/12

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.

US Patent:

20230044335, Feb 9, 2023

Filed:

Oct 24, 2022

Appl. No.:

17/972324

Inventors:

- Atlanta GA, US
Paul Maxwell - Alamo CA, US

Assignee:

AT&T Intellectual Property I, L.P. - Atlanta GA

International Classification:

H04L 25/02
H04L 5/14
H04B 7/06
H04B 17/318
H04B 17/336
H04B 7/0452
G06N 20/00
H04B 7/0426
H04B 7/0456
H04W 24/02
H04W 72/04
H04W 72/12
H04W 84/04
H04L 5/00
H04B 7/08
H01Q 3/26
H04W 72/08
H04B 7/0417
H04B 17/309
H04L 43/0888
H04L 43/16
H04W 52/14
H04W 52/26
H04W 16/28
H04W 24/08
H04B 17/12

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.