公开(公告)号：US20240204840A1

公开(公告)日：2024-06-20

申请号：US18595017

申请日：2024-03-04

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

Inventor： Salam Akoum ,  Aditya Chopra ,  Milap Majmundar

IPC: H04B7/06 ,  H04B7/0413 ,  H04B7/0417 ,  H04B7/0456 ,  H04L5/00 ,  H04L25/02 ,  H04L67/10 ,  H04W28/06

CPC classification number: H04B7/0619 ,  H04B7/0413 ,  H04B7/0417 ,  H04B7/0456 ,  H04B7/0617 ,  H04B7/0665 ,  H04L5/0048 ,  H04L5/0051 ,  H04L5/0064 ,  H04L25/0224 ,  H04W28/06 ,  H04L5/0053 ,  H04L67/10

Abstract: Aspects of the subject disclosure may include, for example, a system comprising a distributed unit (DU) configured to generate sounding reference signal (SRS)-based beams, and a remote unit (RU) communicatively coupled with the DU over a fronthaul, wherein the RU is configured to generate demodulation reference signal (DMRS)-based beams and perform digital beamforming for an uplink using the DMRS-based beams in combination with the SRS-based beams. Other embodiments are disclosed.

公开(公告)号：US11902219B2

公开(公告)日：2024-02-13

申请号：US17467608

申请日：2021-09-07

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

Inventor： Thomas Novlan ,  Salam Akoum ,  Aditya Chopra

IPC: H04L5/00 ,  H04B7/06 ,  H04L5/14 ,  H04W72/044 ,  H04W72/542

CPC classification number: H04L5/1461 ,  H04B7/0697 ,  H04W72/044 ,  H04W72/542

Abstract: Aspects of the subject disclosure may include, for example, performing dynamic beam selection and coordination to support space division multiplexing (SDM) and Full Duplex operation for integrated access and backhaul (IAB) in 5G new radio (NR) networks. The subject disclosure further describes how an IAB node and a serving parent node can coordinate beams used for access and backhaul links dynamically with over-the-air signaling. Other embodiments are described in the subject disclosure.

公开(公告)号：US11870594B2

公开(公告)日：2024-01-09

申请号：US16411017

申请日：2019-05-13

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

Inventor： Xiaoyi Wang ,  Milap Majmundar ,  Salam Akoum ,  Thomas Novlan

IPC: H04L1/1867 ,  H04W8/30 ,  H04L1/1812 ,  H04W84/18

CPC classification number: H04L1/1896 ,  H04L1/1816 ,  H04W8/30 ,  H04W84/18

Abstract: Facilitating a group hybrid automatic repeat request procedure for sidelink group-case in advanced networks (e.g., 4G, 5G, 6G, and beyond) is provided herein. Operations of a method can comprise determining, by a first device comprising a processor, that first information received via a sidelink control channel is successfully decoded and that second information received via a sidelink shared channel is not successfully decoded. The first information and the second information can be received from a second device. Further, the method can comprise transmitting, by the first device, negative acknowledgement data based on a group hybrid automatic repeat request feedback procedure. The method also can comprise receiving, by the first device, retransmission of the second information via the sidelink shared channel from a group of devices in response to the negative acknowledgement data.

公开(公告)号：US11575425B2

公开(公告)日：2023-02-07

申请号：US17504878

申请日：2021-10-19

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

Inventor： Salam Akoum ,  Xiaoyi Wang ,  Ralf Bendlin

IPC: H04B7/06 ,  H04B17/382 ,  H04L25/02

Abstract: Facilitating sparsity adaptive feedback in the delay doppler domain in advanced networks (e.g., 4G, 5G, 6G, and beyond) is provided herein. Operations of a method can comprise determining, by a first device comprising a processor, a channel covariance matrix in a time-frequency domain based on a channel estimation associated with reference signals received from a second device. The method also can comprise decomposing, by the first device, the channel covariance matrix into a group of component matrices. Further, the method can comprise transforming, by the first device, respective matrices of the group of component matrices into respective covariance matrices in a delay doppler domain. The method also can comprise determining, by the first device, channel state information feedback in the delay doppler domain.

公开(公告)号：US11490435B2

公开(公告)日：2022-11-01

申请号：US17005822

申请日：2020-08-28

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

Inventor： Thomas Novlan ,  Xiaoyi Wang ,  Arunabha Ghosh ,  Milap Majmundar ,  Salam Akoum

IPC: H04W76/15 ,  H04W76/14 ,  H04W28/08 ,  H04W80/02 ,  H04W24/10 ,  H04W92/18

Abstract: Facilitating sidelink-based relaying and multi-connectivity in advanced networks (e.g., 5G, 6G, and beyond) is provided herein. Operations of a method can comprise facilitating, by a first communications device comprising a memory and a processor, an establishment of multiple-connectivity for communication links between a second communications device and a third communications device. Facilitating the establishment of the multiple-connectivity for the communication links can comprise facilitating establishing a communication link between the second communications device and the third communications device. Facilitating the establishment of the multiple-connectivity for the communication links also can comprise facilitating establishing a first communication relay link between the second communications device and the first communications device and a second communication relay link between the first communications device and the third communications device.

公开(公告)号：US11483079B2

公开(公告)日：2022-10-25

申请号：US17453982

申请日：2021-11-08

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

Inventor： Ralf Bendlin ,  Salam Akoum ,  Xiaoyi Wang

IPC: H04B17/10 ,  H04B17/00

Abstract: The described technology is generally directed towards multidimensional grid sampling for radio frequency power feedback. A mobile device can sample radio frequency signal power at multiple sample points, and can send sample values to a base station. The multiple sample points can be defined with reference to a grid having a first dimension and a second dimension, such as time and frequency, or delay and Doppler. A variety of techniques are provided to define the multiple sample points.

公开(公告)号：US11452090B2

公开(公告)日：2022-09-20

申请号：US17459196

申请日：2021-08-27

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

Inventor： SaiRamesh Nammi ,  Salam Akoum ,  Arunabha Ghosh

IPC: H04W72/04 ,  H04B7/0413 ,  H04B7/06 ,  H04W84/04

Abstract: A base station device can transmit data via multiple data channels to a single user equipment device. Each of the multiple data channels can be configured and scheduled via respective downlink control channels to the user equipment device. In an embodiment, the first data channel can be mapped to multiple layers, with a modulation and coding scheme (MCS) assigned based on the average channel quality indicator (CQI) of the layers. One or more of the layers can have a higher CQI however, capable of supporting an additional transmission. The base station device can then facilitate establishing a second data channel to the layer with the higher CQI. The MCS assigned to the second data traffic channel can be based on the CQI of the layer, or based on a difference between the average CQI of the layers and the CQI of the layer.

公开(公告)号：US11418994B2

公开(公告)日：2022-08-16

申请号：US16929676

申请日：2020-07-15

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

Inventor： Xiaoyi Wang ,  Arunabha Ghosh ,  Milap Majmundar ,  Salam Akoum ,  SaiRamesh Nammi ,  Thomas Novlan

IPC: H04W28/02 ,  H04W72/12 ,  H04W52/02 ,  H04W74/08

Abstract: A user equipment can send a notification to a network node indicating that the user equipment is entering a battery saving mode of operation. Reduced physical layer procedures can be implemented based on reduced capabilities indicated by the user equipment. Reduced physical layer procedures can also be implemented based on the network node's reconfiguration of parameters to facilitate the activation of the reduced physical layer procedures. The user equipment can also send to the network node recommendations of reduced physical layer procedures.

公开(公告)号：US20220191853A1

公开(公告)日：2022-06-16

申请号：US17653139

申请日：2022-03-02

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

Inventor： SaiRamesh Nammi ,  Salam Akoum ,  Arunabha Ghosh

IPC: H04W72/04 ,  H04B7/06 ,  H04W4/02 ,  H04B17/318 ,  H04B7/08

Abstract: Various embodiments disclosed herein provide for optimizing identification of a beam in a massive multiple-input multiple output (MIMO) system. The receiver device can select a beam to use for a transmission, and generate channel state information based on a selection of either a single stage beam selection process or a two stage beam selection process. According to an embodiment of the disclosure, the receiver can select which beam selection process to use based on the context of the receiver device. The receiver can select which beam selection process to use based on the long term signal to noise ratio, or the correlation metrics associated with the receiver and transmitter, or based on the path loss between the transmitter and receiver, or based on the location of the receiver relative to the transmitter.

公开(公告)号：US11329865B2

公开(公告)日：2022-05-10

申请号：US16857651

申请日：2020-04-24

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

Inventor： Salam Akoum ,  Arunabha Ghosh ,  Xiaoyi Wang

IPC: H04W72/04 ,  H04L41/0668 ,  H04L1/16 ,  H04B7/08 ,  H04B7/06 ,  H04L5/00 ,  H04W56/00 ,  H04W74/08

Abstract: When configured, a channel state information reference signal (CSI-RS) can be used to identify new beams. If CSI-RS based monitoring fails to identify new beams, and no other reference signals (RS) are used for beam management, the user equipment cannot identify a new beam. However, instead of using a 4-step random access channel (RACH) procedure for beam recovery request transmission, a modified 2-step contention-based RACH procedure can saves overhead and reduce latency associated with the 4-step procedure.