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).

  • Patent number: 10813053
    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.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: October 20, 2020
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Arunabha Ghosh, Thomas Novlan, Xiaoyi Wang, Ralf Bendlin, Aditya Chopra
  • Patent number: 10763935
    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.
    Type: Grant
    Filed: August 9, 2018
    Date of Patent: September 1, 2020
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Salam Akoum, Xiaoyi Wang, Arunabha Ghosh, Aditya Chopra
  • Publication number: 20200267633
    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.
    Type: Application
    Filed: September 17, 2019
    Publication date: August 20, 2020
    Inventors: Ralf Bendlin, Aditya Chopra, Arunabha Ghosh, Abdulrauf Hafeez
  • Publication number: 20200252114
    Abstract: A split radio access network is provided that efficiently transmits beamforming coefficients from a distributed baseband unit device to a remote radio unit device to facilitate beamforming at the remote radio unit. The beamforming coefficients can be determined at the baseband unit device and transmitted along with the IQ data (data to be beamformed) to the remote radio unit device. Due to the large number of antenna ports however, there can still be a very large number of coefficients to transmit, and the disclosure provides for a compressed set of coefficients that reduces the overhead signaling requirements. Instead of sending coefficients for every kth antenna port, the system can select a subset of the coefficients corresponding to a set of k antenna ports which can be used by the remote radio unit to approximate the full set of beamforming coefficients.
    Type: Application
    Filed: April 21, 2020
    Publication date: August 6, 2020
    Inventors: SaiRamesh Nammi, Aditya Chopra, Arunabha Ghosh, Milap Majmundar
  • Publication number: 20200229140
    Abstract: The technologies described herein are generally directed toward communicating determined contention levels of resource pools to user equipments enabling the user equipments to select from available resource pools. According to an embodiment, a system can comprise a processor and a memory that can store executable instructions that, when executed by the processor, facilitate performance of operations. The operations can include assigning determined contention levels to respective ones of a group of resource pools. The operations can further include communicating, to a user equipment device, the determined contention levels, enabling the user equipment device to select a resource pool of the group of resource pools based on the determined contention levels.
    Type: Application
    Filed: January 10, 2019
    Publication date: July 16, 2020
    Inventors: Xiaoyi Wang, Salam Akoum, Aditya Chopra, Andrew Thornburg, Milap Majmundar, Thomas Novlan, Ralf Bendlin
  • Publication number: 20200220586
    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.
    Type: Application
    Filed: March 18, 2020
    Publication date: July 9, 2020
    Inventors: Aditya Chopra, Arunabha Ghosh, Milap Majmundar, SaiRamesh Nammi
  • Patent number: 10666340
    Abstract: A split radio access network is provided that efficiently transmits beamforming coefficients from a distributed baseband unit device to a remote radio unit device to facilitate beamforming at the remote radio unit. The beamforming coefficients can be determined at the baseband unit device and transmitted along with the IQ data (data to be beamformed) to the remote radio unit device. Due to the large number of antenna ports however, there can still be a very large number of coefficients to transmit, and the disclosure provides for a compressed set of coefficients that reduces the overhead signaling requirements. Instead of sending coefficients for every kth antenna port, the system can select a subset of the coefficients corresponding to a set of k antenna ports which can be used by the remote radio unit to approximate the full set of beamforming coefficients.
    Type: Grant
    Filed: June 14, 2019
    Date of Patent: May 26, 2020
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: SaiRamesh Nammi, Aditya Chopra, Arunabha Ghosh, Milap Majmundar
  • Publication number: 20200162174
    Abstract: 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: Application
    Filed: January 27, 2020
    Publication date: May 21, 2020
    Inventors: Aditya Chopra, Saeed Ghassemzadeh, Arunabha Ghosh, Ralf Bendlin, Salam Akoum, SaiRamesh Nammi, Thomas Novlan, Xiaoyi Wang
  • Publication number: 20200137201
    Abstract: Compression techniques can reduce the fronthaul throughput in split radio access network (RAN) architectures for next generation designs. Adaptive fixed-point mapping can reduce the throughput requirements between a baseband unit (DU) and a remote radio unit (RU). Thus, a bit or plurality of bits can indicate the type of data being passed over the fronthaul. Consequently, adaptive mapping between precoded downlink data and non-precoded downlink data suited to the type of data passed over the fronthaul can achieve high compression ratios.
    Type: Application
    Filed: March 7, 2019
    Publication date: April 30, 2020
    Inventors: Aditya Chopra, Arunabha Ghosh, Milap Majmundar
  • Patent number: 10637540
    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.
    Type: Grant
    Filed: January 22, 2018
    Date of Patent: April 28, 2020
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Aditya Chopra, Arunabha Ghosh, Milap Majmundar, SaiRamesh Nammi
  • Publication number: 20200106507
    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.
    Type: Application
    Filed: December 3, 2019
    Publication date: April 2, 2020
    Inventors: SaiRamesh Nammi, Arunabha Ghosh, Milap Majmundar, Aditya Chopra
  • Publication number: 20200100140
    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.
    Type: Application
    Filed: September 21, 2018
    Publication date: March 26, 2020
    Inventors: Ralf Bendlin, Arunabha Ghosh, Aditya Chopra
  • Patent number: 10602370
    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.
    Type: Grant
    Filed: October 1, 2018
    Date of Patent: March 24, 2020
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Ralf Bendlin, Saeed Ghassemzadeh, Aditya Chopra, Arunabha Ghosh
  • Publication number: 20200053655
    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.
    Type: Application
    Filed: September 25, 2019
    Publication date: February 13, 2020
    Inventors: Arunabha Ghosh, Thomas Novlan, Xiaoyi Wang, Ralf Bendlin, Aditya Chopra
  • Publication number: 20200052758
    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.
    Type: Application
    Filed: August 9, 2018
    Publication date: February 13, 2020
    Inventors: Salam Akoum, Xiaoyi Wang, Arunabha Ghosh, Aditya Chopra
  • Publication number: 20200052766
    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.
    Type: Application
    Filed: May 24, 2019
    Publication date: February 13, 2020
    Inventors: SaiRamesh Nammi, Arunabha Ghosh, Milap Majmundar, Aditya Chopra
  • Publication number: 20200052752
    Abstract: A split radio access network is provided that efficiently transmits beamforming coefficients from a distributed baseband unit device to a remote radio unit device to facilitate beamforming at the remote radio unit. The beamforming coefficients can be determined at the baseband unit device and transmitted along with the IQ data (data to be beamformed) to the remote radio unit device. Due to the large number of antenna ports however, there can still be a very large number of coefficients to transmit, and the disclosure provides for a compressed set of coefficients that reduces the overhead signaling requirements. Instead of sending coefficients for every kth antenna port, the system can select a subset of the coefficients corresponding to a set of k antenna ports which can be used by the remote radio unit to approximate the full set of beamforming coefficients.
    Type: Application
    Filed: June 14, 2019
    Publication date: February 13, 2020
    Inventors: SaiRamesh Nammi, Aditya Chopra, Arunabha Ghosh, Milap Majmundar
  • Publication number: 20200052746
    Abstract: Precoder weights can be indicated to a carrier unit to increase network efficiency. To indicate precoder weights to the carrier unit, various types of precoding data can be used to schedule user equipment. For example, a baseband unit can compress precoding coefficients for channel state information reference signals for a remote radio unit and for a demodulation reference signal (DMRS) to reduce a signaling cost between the remote radio unit and the baseband unit. Because both the baseband unit and the remote radio unit can have access to the basis vectors the basis vectors can be multiplied by coefficients to transmit the compressed weight of the basis vectors. Thus, allowing the remote radio unit to reconstruct the basis vector for the channel state information reference signals.
    Type: Application
    Filed: September 19, 2019
    Publication date: February 13, 2020
    Inventors: SaiRamesh Nammi, Arunabha Ghosh, Milap Majmundar, Aditya Chopra
  • Publication number: 20200045645
    Abstract: Various embodiments disclosed herein provide for power control system in a multi-hop integrated access and backhaul network. In a 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 disclosed herein can manage the power levels of the relay node in order to reduce the difference in power levels. In one embodiment, the power control system can schedule relay node devices to transmit uplink transmissions alongside UE devices that have a high signal strength. In another embodiment, the power control system can schedule relay nodes and UE devices to separate symbols within a time slot.
    Type: Application
    Filed: August 2, 2018
    Publication date: February 6, 2020
    Inventors: Aditya Chopra, Arunabha Ghosh, Thomas Novlan, Andrew Thornburg, Xiaoyi Wang, Ralf Bendlin
  • Publication number: 20200044711
    Abstract: A split radio access network is provided that efficiently transmits beamforming coefficients from a distributed baseband unit device to a remote radio unit device to facilitate beamforming at the remote radio unit. The beamforming coefficients can be determined at the baseband unit device and transmitted along with the data to be beamformed by the remote radio unit device. Due to the large number of antenna ports however, there can still be a very large number of coefficients to transmit, and the disclosure provides for a compressed set of coefficients that reduces the overhead signaling requirements. Instead of sending coefficients for every kth antenna port, the system can select a subset of the coefficients corresponding to a set of k antenna ports which can be used by the remote radio unit to approximate the full set of beamforming coefficients.
    Type: Application
    Filed: October 11, 2019
    Publication date: February 6, 2020
    Inventors: Aditya Chopra, Arunabha Ghosh, Milap Majmundar, SaiRamesh Nammi