Patents by Inventor Sundar Subramanian

Sundar Subramanian 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: 11184933
    Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may receive a downlink (DL) signal from a base station on one or more DL beam(s). The UE may identify a selected DL beam of the one or more DL beam(s) for communications from the base station to the UE. The UE may transmit a scheduling request message to the base station using at least one of a resource or a waveform selected based at least in part on the selected DL beam.
    Type: Grant
    Filed: April 27, 2020
    Date of Patent: November 23, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Muhammad Nazmul Islam, Sundar Subramanian, Junyi Li, Navid Abedini, Bilal Sadiq
  • Patent number: 11184848
    Abstract: Methods, systems, and devices for wireless communication are described. A base station may identify that data is available to be transmitted to a user equipment (UE) that is operating in a discontinuous reception (DRX) mode. The base station may configure a plurality of UE-specific reference signals for transmission to the UE, each UE-specific reference signal indicating a UE identifier and an availability of data for the UE. The UE may receive the UE-specific reference signal, and identify that data is available for the UE from the base station. The UE may then transmit a beam recovery signal to the base station that includes an identifier for the transmit beam used by the UE to transmit the beam recovery signal. The base station may transmit, using a beam sweeping configuration, the plurality of UE-specific reference signals.
    Type: Grant
    Filed: July 11, 2018
    Date of Patent: November 23, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Muhammad Nazmul Islam, Sumeeth Nagaraja, Jianghong Luo, Sundar Subramanian, Ashwin Sampath
  • Publication number: 20210359747
    Abstract: A method, an apparatus, and a computer-readable medium for wireless communication are provided. In some aspects, a base station may send a beam modification command that indicates a set of transmit beam indexes corresponding to a set of transmit beams of a base station, and each transmit beam index of the set of transmit beam indexes may indicate at least a transmit direction for transmitting a transmit beam by the base station. The base station may send, in association with the beam modification command, a reference signal using at least one transmit beam of the set of transmit beams, where a first portion of the reference signal is sent in a first set of symbols and a second portion of the reference signal is received in a second set of symbols.
    Type: Application
    Filed: July 30, 2021
    Publication date: November 18, 2021
    Inventors: Muhammad Nazmul ISLAM, Bilal Sadiq, Tao Luo, Sundar Subramanian, Junyi Li
  • Patent number: 11178646
    Abstract: When beamforming (e.g., via a millimeter wave system (mmW)) is used for wireless communication, a base station may transmit beams that are directed to certain directions. Due to the directional nature of the beams in the mmW system, an approach to determine a beam that provides a desirable gain is studied. The apparatus may be a user equipment (UE). The apparatus receives, from a base station, a plurality of signals through a plurality of beams of the base station, each of the plurality of beams corresponding to a respective antenna port of a plurality of antenna ports of the base station. The apparatus receives from the base station a number of beams whose information should be fed back to the base station. The apparatus performs channel estimation for each beam of the plurality of beams from the plurality of antenna ports based on the plurality of signals.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: November 16, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Muhammad Nazmul Islam, Tao Luo, Bilal Sadiq, Juergen Cezanne, Sundar Subramanian, Junyi Li
  • Patent number: 11160030
    Abstract: Techniques are provided for power control in directional beam environments. A user equipment (UE) may determine one or more power parameters on a beam-by-beam basis. Each directional uplink transmission beam in a communication link between the UE and the base station may be independently controlled using these beam-specific power parameters. Examples of these beam-specific power parameters may include a maximum output power for a given directional uplink transmission beam and a difference between the maximum output power for the given directional uplink transmission beam and an estimated transmit power for the given directional uplink transmission beam. The UE may report one or more of these beam-specific power parameters to a base station using a beam-specific report.
    Type: Grant
    Filed: November 1, 2018
    Date of Patent: October 26, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Navid Abedini, Xiao Feng Wang, Bilal Sadiq, Sundar Subramanian, Muhammad Nazmul Islam
  • Patent number: 11147120
    Abstract: Methods, systems, and devices for wireless communication are described. A base station may transmit, to a user equipment (UE) operating in a discontinuous reception mode, a wakeup signal indicating whether data is available to be transmitted to the UE, the wakeup signal transmitted using a first set of transmit beams, which may be selected from a periodic beam management procedure, in accordance with a beam sweeping configuration. The base station may receive, from the UE and based at least in part on the wakeup signal, a response signal. The base station may perform, based at least in part on the response signal, further beam update procedures to identify a second set of transmit beams for future transmissions of the wakeup signal and/or for transmission of physical downlink control channel (PDCCH) to the UE.
    Type: Grant
    Filed: December 23, 2019
    Date of Patent: October 12, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Jianghong Luo, Muhammad Nazmul Islam, Sumeeth Nagaraja, Ashwin Sampath, Sundar Subramanian
  • Patent number: 11146481
    Abstract: Methods, systems, and apparatuses are described for a base station initiated control mechanism for supporting supplemental a link. In some aspects, control information associated with a directional, first radio access technology (RAT) for a user equipment (UE) may be identified at a first base station, the first base station configured to communicate with the UE using the directional, first RAT, and the control information associated with the directional, first RAT may be transmitted to a second base station to forward to the UE using a second RAT.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: October 12, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Jung Ryu, Sundar Subramanian, Ashwin Sampath, Junyi Li
  • Patent number: 11140667
    Abstract: Techniques are described for wireless communication. In one method, a user equipment (UE) receives a timing synchronization signal (TSS) and a physical broadcast channel (PBCH), with the TSS based at least in part on a timing of the TSS within a broadcast channel transmission time interval (BCH TTI); determines the timing of the TSS within the BCH TTI; and demodulates the PBCH based at least in part on the TSS. In another method, a base station allocates resources for a TSS and a PBCH within a BCH TTI; determines the TSS based at least in part on a timing of the TSS within the BCH TTI; and transmits, on the resources allocated for the TSS and the PBCH, the TSS and the PBCH, with the TSS transmitted as a demodulation reference signal (DMRS) for the PBCH on at least one port used to transmit the TSS and the PBCH.
    Type: Grant
    Filed: March 14, 2018
    Date of Patent: October 5, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Bilal Sadiq, Sundar Subramanian, Muhammad Nazmul Islam, Juergen Cezanne, Navid Abedini, Tao Luo
  • Patent number: 11115096
    Abstract: Methods, systems, and devices for wireless communication are described. A network device, such as a base station, may transmit a request message to a user equipment (UE). The request message may include a request for the UE to transmit a set of sounding reference signals (SRSs). The set of SRSs may include two (or more) beamformed signals. The network device may receive the set of SRSs according to the request message. The network device may identify, based on a co-phasing parameter associated with the two (or more) beamformed signals, an antenna port precoder configuration to use for communicating with the UE.
    Type: Grant
    Filed: June 24, 2020
    Date of Patent: September 7, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Muhammad Nazmul Islam, Bilal Sadiq, Ashwin Sampath, Sundar Subramanian, Junyi Li, Vasanthan Raghavan
  • Patent number: 11116006
    Abstract: Methods, systems, and devices for wireless communication are described that provide for selecting different uplink transmission parameters for transmission or retransmission of a random access message. A user equipment (UE) may retransmit a random access message to a base station during a random access procedure if an initial transmission of the random access message was unsuccessfully received by the base station. The UE may select a different transmission beam, uplink resource, or transmission power for retransmission of the random access message. The selection may be based on path loss associated with synchronization signals or previous transmissions. The selection may also be based on a maximum number of retransmissions.
    Type: Grant
    Filed: November 8, 2017
    Date of Patent: September 7, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Muhammad Nazmul Islam, Sumeeth Nagaraja, Tao Luo, Bilal Sadiq, Junyi Li, Sundar Subramanian
  • Patent number: 11109333
    Abstract: A UE may identify a first indication associated with a first signaling to be received in a time interval and identify a second indication associated with a second signaling to be received in the time interval. The UE may select to receive and receive, in the time interval, at least one of the first signaling or the second signaling based on at least one of the first or second indications. One or more of the first and second indications may be received from a BS or determined by the UE via predefined or other means. A BS may convey indications of the first and/or second signaling. The first and second indications may be transmitted sufficiently before the signaling in an effort to allow the UE to select and tune its receiver beam in the direction of the signaling to be received.
    Type: Grant
    Filed: June 15, 2020
    Date of Patent: August 31, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Tianyang Bai, Muhammad Nazmul Islam, Juergen Cezanne, Sundar Subramanian, Ruhua He, Raghu Narayan Challa, Alexei Yurievitch Gorokhov, Junyi Li
  • Patent number: 11108441
    Abstract: A UE may receive, from a base station, a message requesting BSI. The UE may determine a number N of BSI reports to send to the base station, and each BSI report may indicate a beam index corresponding to a beam and a received power associated with the beam. The UE may send, to the base station, N BSI reports based on the message requesting BSI. The UE may receive, from the base station, a set of signals through a set of beams, and determine the received power for each signal of the set of signals received through each beam of the set of beams, each received power may be associated with a beam of the set of beams.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: August 31, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Muhammad Nazmul Islam, Bilal Sadiq, Tao Luo, Sundar Subramanian, Junyi Li
  • Patent number: 11101869
    Abstract: A UE may receive a beam modification command that indicates a set of transmit beam indexes corresponding to a set of transmit beams of a base station, and each transmit beam index of the set of transmit beam indexes may indicate at least a transmit direction for transmitting a transmit beam by the base station. The UE may determine a set of receive beam indexes corresponding to receive beams of the UE based on the set of transmit beam indexes, and each receive beam index of the set of receive beam indexes may indicate at least a receive direction for receiving a receive beam by the UE. The UE may receive, from the base station, a signal through at least one receive beam corresponding to at least one receive beam index included in the set of receive beam indexes.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: August 24, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Muhammad Nazmul Islam, Bilal Sadiq, Tao Luo, Sundar Subramanian, Junyi Li
  • Publication number: 20210255304
    Abstract: Disclosed are techniques for employing deep learning to analyze radar signals. In an aspect, an on-board computer of a host vehicle receives, from a radar sensor of the vehicle, a plurality of radar frames, executes a neural network on a subset of the plurality of radar frames, and detects one or more objects in the subset of the plurality of radar frames based on execution of the neural network on the subset of the plurality of radar frames. Further, techniques for transforming polar coordinates to Cartesian coordinates in a neural network are disclosed. In an aspect, a neural network receives a plurality of radar frames in polar coordinate space, a polar-to-Cartesian transformation layer of the neural network transforms the plurality of radar frames to Cartesian coordinate space, and the neural network outputs the plurality of radar frames in the Cartesian coordinate space.
    Type: Application
    Filed: November 27, 2019
    Publication date: August 19, 2021
    Inventors: Daniel Hendricus Franciscus FONTIJNE, Amin ANSARI, Bence MAJOR, Ravi Teja SUKHAVASI, Radhika Dilip GOWAIKAR, Xinzhou WU, Sundar SUBRAMANIAN, Michael John HAMILTON
  • Patent number: 11095358
    Abstract: Methods, apparatuses, and computer-readable mediums associated with a user equipment (UE) and a base station are provided for herein. In aspects, a UE may receive, from a base station, a beam modification command indicating at least one beam index for communicating through at least one beam on a channel and indicating the channel corresponding to the at least one beam. In an aspect, each beam index of the at least one beam index indicating at least a direction for communicating through a corresponding beam of the at least one beam, where the beam modification command may be received in a MAC CE. The UE may communicate, with the base station, through the at least one beam corresponding to the at least one beam index on the channel.
    Type: Grant
    Filed: August 24, 2020
    Date of Patent: August 17, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Muhammad Nazmul Islam, Bilal Sadiq, Tao Luo, Sundar Subramanian, Junyi Li
  • Patent number: 11096158
    Abstract: Various aspects of the disclosure relate to communicating uplink control information. As one example, a user equipment may send uplink control information to a base station. In some aspects, the number of symbols used to communicate the uplink control information may be based on a link gain associated with the UE and/or based on a payload size of the uplink control information. As another example, the user equipment may send channel information for a number of beams to the base station. In some aspects, the number of beams may be based on the type of channel that is used to send the uplink control information.
    Type: Grant
    Filed: August 6, 2019
    Date of Patent: August 17, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Muhammad Nazmul Islam, Sundar Subramanian, Ashwin Sampath, Juergen Cezanne, Bilal Sadiq, Junyi Li, Tao Luo
  • Patent number: 11088747
    Abstract: A first apparatus may transmit, to a user equipment (UE), on a control channel, one or more indications of one or more beam indexes corresponding to one or more beams. The first apparatus may transmit, to the UE, one or more reference signals through the one or more beams corresponding to the one or more beam indexes. The reference signals may be used by the UE to select a best subarray and/or receive combiner for communication with the first apparatus.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: August 10, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Muhammad Nazmul Islam, Tao Luo, Juergen Cezanne, Sundar Subramanian, Ashwin Sampath, Bilal Sadiq, Junyi Li
  • Patent number: 11082911
    Abstract: Certain aspects of the present disclosure provide techniques for assisted power control for an uplink signal transmitted during a RACH procedure. A UE may determine a transmit power for transmitting a message during a RACH procedure with a secondary BS, based at least in part, on communication between the UE and a primary BS. The UE may transmit the message to the second BS during the RACH procedure based, at least in part, on the determined transmit power.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: August 3, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Navid Abedini, Bilal Sadiq, Sundar Subramanian, Muhammad Nazmul Islam, Junyi Li
  • Patent number: 11082118
    Abstract: Certain aspects of the present disclosure provide various appropriate frame structures, sweep sequences, and procedures that may assist in beam sweeping, tracking and recovery.
    Type: Grant
    Filed: August 30, 2019
    Date of Patent: August 3, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Vasanthan Raghavan, Sundar Subramanian, Juergen Cezanne, Ashwin Sampath, Junyi Li
  • Patent number: 11075725
    Abstract: One apparatus may be configured to detect a set of beams from a base station. The apparatus may be further configured to select a beam of the set of beams. The apparatus may be further configured to determine at least one resource based on the selected beam. The apparatus may be further configured to transmit, on the at least one determined resource, a beam adjustment request to the base station. The request may indicate an index associated with the selected beam. Another apparatus may be configured to transmit a first set of beams. The other apparatus may be further configured to receive a beam adjustment request on at least one resource. The other apparatus may be further configured to determine a beam index of a beam in the first set of beams based on the request and the at least one resource.
    Type: Grant
    Filed: July 25, 2019
    Date of Patent: July 27, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Muhammad Nazmul Islam, Tao Luo, Juergen Cezanne, Sundar Subramanian, Ashwin Sampath, Bilal Sadiq, Junyi Li