Patents by Inventor Aditya Chopra
Aditya Chopra has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230006871Abstract: Aspects of the subject disclosure may include, a non-linear energy detector that obtains baseband information from a mixed signal that corresponds to an information component of a received radio frequency (RF) signal, wherein the mixed signal comprises a local oscillator signal combined, without multiplication, with the received RF signal, wherein the received RF signal comprises a carrier wave component operating at a carrier frequency within a millimeter wave spectrum, wherein the non-linear energy detector is associated with a non-linear current-voltage (I-V) characteristic curve, and wherein the baseband information is obtained by applying the mixed signal to the non-linear I-V characteristic curve. Other embodiments are disclosed.Type: ApplicationFiled: September 13, 2022Publication date: January 5, 2023Applicants: AT&T Intellectual Property I, L.P., University of Notre Dame du LacInventors: Ralf Bendlin, Aditya Chopra, Bertrand Martyn Hochwald, Nicholas Joseph Estes, Jonathan David Chisum, Kang Gao
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Patent number: 11540285Abstract: Aspects of the subject disclosure may include, for example, a base station that includes a phased array antenna system and a MIMO antenna system. The MIMO antenna system may receive sounding signals sent by user equipment (UE) and determine angular location information for each UE. The angular location information may be used by the phased array antenna system to create antenna beams. The angular location information may also be used to schedule communications with multiple UEs in common beams. Other embodiments are disclosed.Type: GrantFiled: September 10, 2021Date of Patent: December 27, 2022Assignee: AT&T Intellectual Property I, L.P.Inventors: Aditya Chopra, Andrew Thornburg, Saeed Ghassemzadeh
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Publication number: 20220408427Abstract: Disaggregated wireless radio access networks can utilize a lower physical split architecture with open fronthaul between the radio unit and distributed baseband units. A split architecture is one in which the analogue radio front-end and the digital baseband processor in a radio are not co-located. Instead, these components are connected via a fronthaul transport network. Therefore, the baseband unit can transmit two beamforming matrices for every contiguous resource block occupied by a user. The radio unit can then interpolate between these two beamforming matrices for each of the RE inside of the resource block based on the baseband unit and the radio unit agreeing upon a method of interpolation to generate beamforming matrices per resource element.Type: ApplicationFiled: August 24, 2022Publication date: December 22, 2022Inventors: Aditya Chopra, Andrew Thornburg, Milap Majmundar
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Publication number: 20220407671Abstract: 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.Type: ApplicationFiled: September 7, 2021Publication date: December 22, 2022Applicant: AT&T Intellectual Property I, L.P.Inventors: Thomas Novlan, Salam Akoum, Aditya Chopra
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Patent number: 11533065Abstract: Aspects of the subject disclosure may include, for example, obtaining a received channel-encoded data block having information bits, a transmitted error-check value, and redundant code bits. The redundant code bits correspond to a channel code applied to the received channel-encoded data block prior to transmission via a communication channel. A channel code type is identified and responsive to it being systematic, the information bits and the transmitted error-check value are obtained without decoding according to the channel code. The received channel-encoded data block is checked according to the transmitted error-check value to obtain a result. Responsive to the result not indicating an error, extracting the information bits without decoding the received channel-encoded data block according to the channel code. Responsive to the result indicating an error, decoding the received channel-encoded data block according to the channel code to obtain decoded information bits. Other embodiments are disclosed.Type: GrantFiled: April 27, 2021Date of Patent: December 20, 2022Assignee: AT&T Intellectual Property I, L.P.Inventors: Sairamesh Nammi, Arunabha Ghosh, Aditya Chopra, Saeed Ghassemzadeh
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Patent number: 11483190Abstract: Aspects of the subject disclosure may include, a non-linear energy detector that obtains baseband information from a mixed signal that corresponds to an information component of a received radio frequency (RF) signal, wherein the mixed signal comprises a local oscillator signal combined, without multiplication, with the received RF signal, wherein the received RF signal comprises a carrier wave component operating at a carrier frequency within a millimeter wave spectrum, wherein the non-linear energy detector is associated with a non-linear current-voltage (I-V) characteristic curve, and wherein the baseband information is obtained by applying the mixed signal to the non-linear I-V characteristic curve. Other embodiments are disclosed.Type: GrantFiled: July 30, 2021Date of Patent: October 25, 2022Assignees: AT&T Intellectual Property I, L.P., University of Notre Dame du LacInventors: Ralf Bendlin, Aditya Chopra, Bertrand Martyn Hochwald, Nicholas Joseph Estes, Jonathan David Chisum, Kang Gao
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Publication number: 20220322217Abstract: Discontinuous access to unlicensed spectrum is facilitated in a new radio access environment. According to 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.Type: ApplicationFiled: June 22, 2022Publication date: October 6, 2022Inventors: Ralf Bendlin, Aditya Chopra, Arunabha Ghosh, Abdulrauf Hafeez
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Publication number: 20220319123Abstract: Methods, computer-readable media, and apparatuses for presenting a visualization of at least one wireless channel parameter as an overlay on top of an image of an environment are described. For example, a processing system including at least one processor may obtain at least a first wireless channel parameter of at least a first location, generate a first visualization of the at least the first wireless channel parameter, where the first visualization indicates at least one of: a magnitude of the at least the first wireless channel parameter or a direction of the at least the first wireless channel parameter, and present the first visualization of the at least the first wireless channel parameter as an overlay on top of a first image of an environment associated with the first location via a display device.Type: ApplicationFiled: April 18, 2022Publication date: October 6, 2022Inventors: Aditya Chopra, Andrew Thornburg, Arunabha Ghosh, Saeed Ghassemzadeh
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Patent number: 11464017Abstract: Disaggregated wireless radio access networks can utilize a lower physical split architecture with open fronthaul between the radio unit and distributed baseband units. A split architecture is one in which the analogue radio front-end and the digital baseband processor in a radio are not co-located. Instead, these components are connected via a fronthaul transport network. Therefore, the baseband unit can transmit two beamforming matrices for every contiguous resource block occupied by a user. The radio unit can then interpolate between these two beamforming matrices for each of the RE inside of the resource block based on the baseband unit and the radio unit agreeing upon a method of interpolation to generate beamforming matrices per resource element.Type: GrantFiled: March 25, 2021Date of Patent: October 4, 2022Assignee: AT&T Intellectual Property I, L.P.Inventors: Aditya Chopra, Andrew Thornburg, Milap Majmundar
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Publication number: 20220312404Abstract: Disaggregated wireless radio access networks can utilize a lower physical split architecture with open fronthaul between the radio unit and distributed baseband units. A split architecture is one in which the analogue radio front-end and the digital baseband processor in a radio are not co-located. Instead, these components are connected via a fronthaul transport network. Therefore, the baseband unit can transmit two beamforming matrices for every contiguous resource block occupied by a user. The radio unit can then interpolate between these two beamforming matrices for each of the RE inside of the resource block based on the baseband unit and the radio unit agreeing upon a method of interpolation to generate beamforming matrices per resource element.Type: ApplicationFiled: March 25, 2021Publication date: September 29, 2022Inventors: Aditya Chopra, Andrew Thornburg, Milap Majmundar
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Patent number: 11456791Abstract: 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.Type: GrantFiled: July 27, 2020Date of Patent: September 27, 2022Assignee: AT&T Intellectual Property I, L.P.Inventors: Salam Akoum, Xiaoyi Wang, Arunabha Ghosh, Aditya Chopra
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Publication number: 20220286169Abstract: Aspects of the subject disclosure may include, for example, a base station that includes a phased array antenna system and a MIMO antenna system. The MIMO antenna system may receive sounding signals sent by user equipment (UE) and determine angular location information for each UE. The angular location information may be used by the phased array antenna system to create antenna beams. The angular location information may also be used to schedule communications with multiple UEs in common beams. Other embodiments are disclosed.Type: ApplicationFiled: March 5, 2021Publication date: September 8, 2022Applicant: AT&T Intellectual Property I, L.P.Inventors: Aditya Chopra, Andrew Thornburg, Saeed Ghassemzadeh
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Publication number: 20220287018Abstract: Aspects of the subject disclosure may include, for example, a base station that includes a phased array antenna system and a MIMO antenna system. The MIMO antenna system may receive sounding signals sent by user equipment (UE) and determine angular location information for each UE. The angular location information may be used by the phased array antenna system to create antenna beams. The angular location information may also be used to schedule communications with multiple UEs in common beams. Other embodiments are disclosed.Type: ApplicationFiled: September 10, 2021Publication date: September 8, 2022Applicant: AT&T Intellectual Property I, L.P.Inventors: Aditya Chopra, Andrew Thornburg, Saeed Ghassemzadeh
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Patent number: 11399336Abstract: Discontinuous access to unlicensed spectrum is facilitated 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.Type: GrantFiled: October 7, 2020Date of Patent: July 26, 2022Assignee: AT&T Intellectual Property I, L.P.Inventors: Ralf Bendlin, Aditya Chopra, Arunabha Ghosh, Abdulrauf Hafeez
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Publication number: 20220182092Abstract: Aspects of the subject disclosure may include, for example, receiving, by a first radio module at a first location, a wireless signal, to obtain a first received RF signal. The wireless signal includes information originating at a remote transmitter and conveyed via a wireless channel. An envelope of the first received RF signal is detected by the first radio module without requiring a local oscillator, to obtain a first baseband signal. The first baseband signal may be filtered and/or amplified, after which it is provided to a processor. The processor also obtains a second digital signal from a second radio module receiving the wireless signal at a second location and determines an estimate of the information originating at the remote transmitter according to the first and second signals. Other embodiments are disclosed.Type: ApplicationFiled: February 25, 2022Publication date: June 9, 2022Applicants: AT&T Intellectual Property I, L.P., University of Notre Dame du LacInventors: Ralf Bendlin, Jonathan David Chisum, Nicholas Joseph Estes, Bertrand Martyn Hochwald, Aditya Chopra
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Publication number: 20220166458Abstract: Aspects of the subject disclosure may include, for example, generating multiple digital reference pulses synchronously to a master oscillator, selectively switching the multiple digital reference pulses, and providing the switched pulses to multiple radio modules operating within a millimeter wave spectrum. For each radio module, counting cycles of an adjustable LO output signal occurring between consecutive pulses of the switched digital reference pulses, determining a difference between the count value and a reference value, and adjusting the adjustable LO according to the difference. A resulting corrected LO signal is synchronized to the master oscillator. Other embodiments are disclosed.Type: ApplicationFiled: December 20, 2021Publication date: May 26, 2022Applicants: AT&T Intellectual Property I, L.P., University of Notre Dame du LacInventors: Aditya Chopra, Ralf Bendlin, Nicholas Joseph Estes, Kang Gao, Bertrand Martyn Hochwald, Jonathan David Chisum
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Publication number: 20220166655Abstract: Aspects of the subject disclosure may include, for example, receiving a radio frequency (RF) signal having a carrier wave component that operates at a carrier frequency within a millimeter wave spectrum. The RF signal also includes an information component based on a phase shift keying (PSK) modulation of the carrier wave component. A local oscillator (LO) signal is obtained, which includes an LO frequency that approximates the carrier frequency. The received RF signal and the LO signal are combined without using signal multiplication to obtain a first combined output signal. The first combined output signal being detected via a non-linear energy detector to obtain a first detected signal. The first output signal includes information of the information component. Other embodiments are disclosed.Type: ApplicationFiled: July 30, 2021Publication date: May 26, 2022Applicants: AT&T Intellectual Property I, L.P., University of Notre Dame du LacInventors: Ralf Bendlin, Aditya Chopra, Bertrand Martyn Hochwald, Nicholas Joseph Estes, Jonathan David Chisum, Kang Gao
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Publication number: 20220132574Abstract: The disclosed subject matter is directed towards a clear channel assessment procedure based on a common preamble, such as for use with 3GPP and IEEE 802.11 technologies, or any other radio technology, including for use in the 6 GHz band. Detection of the common preamble is based on detecting known sequences in signal part, which can be detected without decoding the preamble's payload (channel) part to determine an ongoing transmission's duration. If an ongoing transmission is detected, subsequent energy detection monitoring is performed to determine when transmission ends, which can use a different energy detection threshold from what is used in the initial clear channel assessment's energy detection. The technology facilitates the usage of different sampling rates by different radio technologies that work concurrently in the same unlicensed band, by correlating a received preamble with a stored preamble that accounts for deterministic distortions arising from the different sampling rates.Type: ApplicationFiled: January 3, 2022Publication date: April 28, 2022Inventors: Ralf Bendlin, Arunabha Ghosh, Aditya Chopra
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Publication number: 20220123846Abstract: An example method may include a processing system of a channel sounding receiver having a processor receiving from a base station, at a location, a channel sounding waveform via a plurality of carriers, sampling the channel sounding waveform via the plurality of carriers to generate a plurality of per-carrier time domain sample sets, and processing the plurality of per-carrier time domain sample sets via a plurality of discrete Fourier transform modules to provide a plurality of per-carrier frequency domain sample sets. The method may further include the processing system aligning the plurality of per-carrier frequency domain sample sets in gain and phase to provide a combined frequency domain sample set and measuring a channel property at the location based upon the combined frequency domain sample set.Type: ApplicationFiled: December 30, 2021Publication date: April 21, 2022Inventors: Aditya Chopra, Saeed Ghassemzadeh, Arunabha Ghosh, Ralf Bendlin, Salam Akoum, SaiRamesh Nammi, Thomas Novlan, Xiaoyi Wang
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Patent number: 11308703Abstract: Methods, computer-readable media, and apparatuses for presenting a visualization of at least one wireless channel parameter as an overlay on top of an image of an environment are described. For example, a processing system including at least one processor may obtain at least a first wireless channel parameter of at least a first location, generate a first visualization of the at least the first wireless channel parameter, where the first visualization indicates at least one of: a magnitude of the at least the first wireless channel parameter or a direction of the at least the first wireless channel parameter, and present the first visualization of the at least the first wireless channel parameter as an overlay on top of a first image of an environment associated with the first location via a display device.Type: GrantFiled: November 30, 2020Date of Patent: April 19, 2022Assignee: AT&TIntellectual Property I, L.P.Inventors: Aditya Chopra, Andrew Thornburg, Arunabha Ghosh, Saeed Ghassemzadeh