公开(公告)号：US20200220586A1

公开(公告)日：2020-07-09

申请号：US16822304

申请日：2020-03-18

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

Inventor： Aditya Chopra ,  Arunabha Ghosh ,  Milap Majmundar ,  SaiRamesh Nammi

IPC: H04B7/0417 ,  H04B7/06 ,  H03M7/32 ,  H04B7/0456 ,  H04B1/66 ,  H04L25/00

Abstract: The described technology is generally directed towards selecting a compression and/or quantization function for communicating data to and from an analog front end of a radio unit of a base station coupled to a digital baseband processor of a central unit of the base station. The compression function and/or quantization function can be adaptively and/or otherwise selected based on various criteria, such as the amount of data being transmitted, whether the data corresponds to reference signals or other data, the network architecture (e.g., digital beamforming or hybrid beamforming) in use, and so on.

公开(公告)号：US20200100140A1

公开(公告)日：2020-03-26

申请号：US16137748

申请日：2018-09-21

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

Inventor： Ralf Bendlin ,  Arunabha Ghosh ,  Aditya Chopra

IPC: H04W28/06 ,  H04B7/0456

Abstract: Facilitating energy-efficient wireless communications for advanced networks (e.g., 4G, 5G, and beyond) with low-resolution digital-to-analog converters is provided herein. Operations of a system can comprise determining first values. Respective values of the first values can be digital samples of transmission and reception chains determined based on symbols transformed from bits. The operations can also comprise facilitating a quantization of the first values resulting in second values. Facilitating the quantization can be based on a cost function associated with processing the first values. Further, the operations can comprise outputting the second values as a continuous time signal over antennas of a base station device. The second values can comprise fewer values than the first values.

公开(公告)号：US10602370B2

公开(公告)日：2020-03-24

申请号：US16148926

申请日：2018-10-01

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

Inventor： Ralf Bendlin ,  Saeed Ghassemzadeh ,  Aditya Chopra ,  Arunabha Ghosh

IPC: H04W40/00 ,  H04W16/18 ,  H04W64/00 ,  H04W24/10 ,  H04W24/02 ,  H04W16/28

Abstract: An example method may include a processing system of a device having a processor capturing, at a first position comprising a first location and a first spatial orientation of the device, a first measurement of a performance indicator based upon at least a first wireless signal from a base station of a beamformed wireless communication network and capturing, at a second position comprising a second location and a second spatial orientation of the device, a second measurement of the performance indicator based upon at least a second wireless signal from the base station of the beamformed wireless communication network. The method may include the processing system selecting a position for a deployment of the device based upon the first measurement of the performance indicator and the second measurement of the performance indicator and providing at least one instruction for the deployment of the device at the position that is selected.

公开(公告)号：US20200053655A1

公开(公告)日：2020-02-13

申请号：US16582087

申请日：2019-09-25

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

Inventor： Arunabha Ghosh ,  Thomas Novlan ,  Xiaoyi Wang ,  Ralf Bendlin ,  Aditya Chopra

IPC: H04W52/14 ,  H04W88/10 ,  H04W56/00 ,  H04L5/00

Abstract: Power control can be employed, whereby a power control adjustment can be determined by a relay distributed unit (DU) device, based on a measurement of the power level of received access uplink transmissions, and a measurement of the power level of a reference signal received from a donor DU via a backhaul downlink transmission. The power control adjustment can be transmitted to the donor distributed unit device, which uses the power control adjustment to reduce the amount of power of downlink transmissions to the relay distributed unit device.

公开(公告)号：US20200052758A1

公开(公告)日：2020-02-13

申请号：US16059788

申请日：2018-08-09

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

Inventor： Salam Akoum ,  Xiaoyi Wang ,  Arunabha Ghosh ,  Aditya Chopra

IPC: H04B7/06 ,  H04B17/11 ,  H04B17/24 ,  H04B7/0456

Abstract: Facilitating generic feedback to enable reciprocity and over the air calibration for advanced networks (e.g., 4G, 5G, and beyond) is provided herein. Operations of a system can comprise selecting information to include in a channel state information feedback report based on a feedback instance. The operations can also comprise generating the channel state information feedback report as a function of channel statistics of channels. Further, the operations can comprise transmitting the channel state information feedback report to a network device of a communications network.

公开(公告)号：US10541739B1

公开(公告)日：2020-01-21

申请号：US16421586

申请日：2019-05-24

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

Inventor： SaiRamesh Nammi ,  Arunabha Ghosh ,  Milap Majmundar ,  Aditya Chopra

IPC: H04B7/06 ,  H04B7/0456 ,  H04B7/08 ,  H04W52/24 ,  H04W72/04

Abstract: Precoding coefficients can be compressed based on user equipment signal interference to noise ratio or path loss in front haul cloud radio access network systems. For example, a baseband unit can compute a precoder matrix from an estimated channel associated with an uplink signal. Once the baseband unit computes the channel, it can determine the coefficients for the linear combination of the basis vectors, which are known at the baseband unit and the radio unit as well. The baseband unit can estimate the path loss and the signal interference to noise ratio and determine the basis vectors. The baseband unit can then compress the coefficients and transmit the coefficients to the radio unit. When the radio unit receives the compressed coefficients, the radio unit can reconstruct the precoder matrix and apply to reference signals and data traffic channels.

公开(公告)号：US10455488B1

公开(公告)日：2019-10-22

申请号：US16277284

申请日：2019-02-15

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

Inventor： Ralf Bendlin ,  Aditya Chopra ,  Arunabha Ghosh ,  Abdulrauf Hafeez

IPC: H04W4/00 ,  H04W48/16 ,  H04W4/70 ,  H04W16/14

Abstract: Various embodiments disclosed herein provide for facilitating a discontinuous access to unlicensed spectrum in a new radio access environment. According an embodiment, a system can comprise performing a scanning procedure that determines whether a first subband and a second subband is available for transmission. The system can further facilitate determining whether the first subband and the second subband are adjacent, wherein a first channel formed at the first subband comprising a first guard band and a second channel formed at the second subband comprising a second guard band that is adjacent to the first guard band. The system can further facilitate in response to determining that the first subband and the second subband are adjacent and available for transmission, eliminating the first guard band and the second guard band.

公开(公告)号：US20190229778A1

公开(公告)日：2019-07-25

申请号：US15876842

申请日：2018-01-22

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

Inventor： Aditya Chopra ,  Arunabha Ghosh ,  Milap Majmundar ,  SaiRamesh Nammi

IPC: H04B7/0417 ,  H04B7/06 ,  H03M7/30 ,  H04B7/0456 ,  H04B1/66

Abstract: The described technology is generally directed towards selecting a compression and/or quantization function for communicating data to and from an analog front end of a radio unit of a base station coupled to a digital baseband processor of a central unit of the base station. The compression function and/or quantization function can be adaptively and/or otherwise selected based on various criteria, such as the amount of data being transmitted, whether the data corresponds to reference signals or other data, the network architecture (e.g., digital beamforming or hybrid beamforming) in use, and so on.

公开(公告)号：US12035248B2

公开(公告)日：2024-07-09

申请号：US17518359

申请日：2021-11-03

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

Inventor： Aditya Chopra ,  Arunabha Ghosh ,  Thomas Novlan ,  Andrew Thornburg ,  Xiaoyi Wang ,  Ralf Bendlin

IPC: H04W52/22 ,  H04W52/08 ,  H04W52/46

CPC classification number: H04W52/228 ,  H04W52/08 ,  H04W52/46

Abstract: Various embodiments disclosed herein provide for a power control system in a multi-hop integrated access and backhaul network. In the multi-hop integrated access and backhaul network, a donor node can communicate with user equipment devices and relay nodes that have varying power levels; and to avoid receiving uplink transmissions with varying power levels which can impact automatic gain control systems and lower overall throughput, the power control system can manage the power levels of the relay node in order to reduce the difference in power levels. The power control system can schedule relay node devices to transmit uplink transmissions alongside user equipment devices that have a high signal strength; schedule relay nodes and user equipment devices to separate symbols within a time slot; and/or perform closed loop power control management at the relay node to reduce the power level for an uplink transmission.

公开(公告)号：US11956041B2

公开(公告)日：2024-04-09

申请号：US17866644

申请日：2022-07-18

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.