Patents by Inventor Raghu Narayan

Raghu Narayan 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).

  • Codebook embedding generation and processing
    Patent number: 11658708
    Abstract: Aspects of the present disclosure relate to wireless communication systems, and in particular, to techniques for generation and processing of an embedding representing a beam for communication. Certain aspects provide a method for wireless communication by a wireless node. The method generally includes receiving an embedding representing a characterization associated with a beam; providing the embedding to a machine learning (ML) model; generating one or more communication parameters for communication using the beam via the ML model based on the embedding; and communicating using the one or more communication parameters.
    Type: Grant
    Filed: July 2, 2021
    Date of Patent: May 23, 2023
    Assignee: QUALCOMM Incorporated
    Inventors: Lindsey Makana Kostas, Ryan Michael Carey, Mihir Vijay Laghate, Lorenzo Ferrari, Yuan Gao, Raghu Narayan Challa
  • Adaptive power hysteresis for beam switching
    Patent number: 11658724
    Abstract: Aspects of the present disclosure relate to wireless communications, and more particularly, to techniques for adaptively updating one or more parameters, such as power hysteresis, for determining whether beam switching should be performed. A user equipment (UE) may assess a first beam quality of a first beam for communications with a network entity and a second beam quality of a second beam. The UE adjusts a value of power hysteresis based on one or more conditions, such as whether the UE is mobile and/or the signal to noise ratio (SNR) of the first beam is less than a threshold. Based on the adjusted value of power hysteresis, the UE may switch from the first beam to the second beam if a difference between the second beam quality and the first beam quality is greater than the adjusted value of power hysteresis.
    Type: Grant
    Filed: December 20, 2021
    Date of Patent: May 23, 2023
    Assignee: QUALCOMM Incorporated
    Inventors: Jun Zhu, Yong Li, Raghu Narayan Challa, Alexei Yurievitch Gorokhov
  • Techniques for managing beams using spectral efficiency estimates of two port reference signals
    Patent number: 11658704
    Abstract: Methods, systems, and devices for wireless communications are described. In some examples, a base station and a user equipment (UE) may utilize multi-port reference signals to determine a beam pair for rank-2 transmissions. For example, a UE may receive a set of multi-port reference signals, where each multi-port reference signal of the set corresponds to a unique beam pair and is received via two ports associated with two different polarizations. The UE may determine a spectral efficiency estimation for each multi-port reference signal of the set, select a beam pair associated with a multi-port reference signal with the highest determined spectral efficiency estimation of the set, and transmit an indication of the selected beam pair to the base station. Therefore, the UE and the base station may communicate using a beam pair which maximizes the spectral efficiency and rate of rank-2 transmissions.
    Type: Grant
    Filed: November 24, 2021
    Date of Patent: May 23, 2023
    Assignee: QUALCOMM Incorporated
    Inventors: Vasanthan Raghavan, Raghu Narayan Challa, Mihir Vijay Laghate, Yuan Gao, Jun Zhu
  • TECHNIQUES FOR ENERGY ALLOCATION
    Publication number: 20230156683
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may allocate, from an energy of the UE, a first amount of energy to a first communication link and a second amount of energy to a second communication link. The UE may identify a first energy request associated with the first communication link of the UE and a second energy request associated with the second communication link of the UE. The UE may allocate, from a remainder of the energy after the first amount of energy and the second amount of energy are allocated, a third amount of energy to the first communication link and a fourth amount of energy to the second communication link. The UE may transmit in accordance with the third amount of energy or the fourth amount of energy. Numerous other aspects are described.
    Type: Application
    Filed: September 27, 2022
    Publication date: May 18, 2023
    Inventors: Tienyow LIU, Michel CHAUVIN, Farhad MESHKATI, Jing LIN, Tianpei CHEN, Yahia RAMADAN, Raghu Narayan CHALLA, Arnaud MEYLAN, Reza SHAHIDI
  • TECHNIQUES FOR PER COMMUNICATION LINK ENERGY RESERVATION
    Publication number: 20230156625
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may identify an available energy for uplink transmission of a plurality of communication links of the UE. The UE may configure, from the available energy, a first set of energy allocations for the plurality of communication links. The UE may configure a second set of energy allocations for one or more communication links of the plurality of communication links, wherein the second set of energy allocations are allocated from a remainder of the available energy after the first set of energy allocations are allocated. The UE may transmit based at least in part on at least one of the first set of energy allocations or the second set of energy allocations. Numerous other aspects are described.
    Type: Application
    Filed: September 22, 2022
    Publication date: May 18, 2023
    Inventors: Tienyow LIU, Michel CHAUVIN, Farhad MESHKATI, Raghu Narayan CHALLA, Reza SHAHIDI, Arnaud MEYLAN, Yahia RAMADAN, Jing LIN, Tianpei CHEN, Jagadish NADAKUDUTI, Lin LU, Paul GUCKIAN, Huang LOU
  • TECHNIQUES FOR POWER CONTROL FOR UPLINK TRANSMISSION
    Publication number: 20230156612
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may allocate, from a first amount of energy associated with a first antenna group of the UE, a second amount of energy to a first antenna port of a plurality of antenna ports associated with the first antenna group. The UE may allocate, from the first amount of energy, a third amount of energy to a second antenna port of the plurality of antenna ports associated with the first antenna group. The UE may select, based at least in part on the second amount of energy and the third amount of energy, a set of antenna ports, of the plurality of antenna ports, for an uplink transmission. The UE may perform the uplink transmission using the selected set of antenna ports. Numerous other aspects are described.
    Type: Application
    Filed: November 9, 2022
    Publication date: May 18, 2023
    Inventors: Tianpei CHEN, Tienyow LIU, Farhad MESHKATI, Raghu Narayan CHALLA, Yahia RAMADAN, Jing LIN
  • Techniques for dynamically pairing beams
    Patent number: 11647494
    Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may communicate with a base station using a first beam set of a group of beam sets, where each beam set includes a beam from a first set of beams with a first polarization and a beam from a second set of beams with a second polarization. The UE may receive a set of reference signals corresponding to a set of transmit beams of the base station, where the UE receives at least one reference signal for each beam of the first and second sets of beams. The UE may select a second beam set from the group of beam sets based on one or more parameters associated with the second beam set and based on receiving the set of reference signals, and may communicate with the base station using the selected beam set.
    Type: Grant
    Filed: March 8, 2021
    Date of Patent: May 9, 2023
    Assignee: QUALCOMM Incorporated
    Inventors: Jun Zhu, Mihir Vijay Laghate, Raghu Narayan Challa
  • Techniques for throughput-constrained beam management
    Patent number: 11646769
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may estimate, for each beam at one or more beam levels on one or more antenna panels, an application layer throughput based at least in part on a reference signal received power measurement, wherein the one or more beam levels are each associated with a number of antenna elements. The UE may generate a set of candidate beams that includes, at each of the one or more beam levels, one or more beams for which the respective estimated application layer throughput satisfies an application layer throughput requirement. The UE may select, from the set of candidate beams, a serving beam for which the estimated application layer throughput satisfies the application layer throughput requirement with a fewest number of antenna elements. Numerous other aspects are described.
    Type: Grant
    Filed: November 30, 2021
    Date of Patent: May 9, 2023
    Assignee: QUALCOMM Incorporated
    Inventors: Jun Zhu, Mihir Vijay Laghate, Raghu Narayan Challa
  • SMTC compliant search and measurement scheduling
    Patent number: 11647410
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive synchronization signal block (SSB) measurement time configuration (SMTC) information that identifies a periodicity of a plurality of SSB measurement occasions. The UE may perform at least one of a radio resource management (RRM) operation or a beam management (BM) operation on a group of SSBs based at least in part on whether the plurality of SSB measurement occasions overlap all SSBs of the group of SSBs. Numerous other aspects are provided.
    Type: Grant
    Filed: June 23, 2020
    Date of Patent: May 9, 2023
    Assignee: QUALCOMM Incorporated
    Inventors: Jun Zhu, Yong Li, Raghu Narayan Challa
  • UE beam reselection procedure with CSI reporting and beam switch indication
    Patent number: 11641642
    Abstract: In embodiments, a base station may send to a user equipment (UE) a P3 beam management (BM) channel state information reference signal (CSI-RS) having two ports, and may receive from the UE a P3 BM report in response. The P3 BM report may include a proactive UE beam switch indication and a CSF report corresponding to the best UE beam determined by a UE based on the P3 BM CSI-RS. The base station may determine whether the P3 BM report includes an indication that the UE will perform a beam switch from a first UE beam to a second UE beam, and may determine a UE beam switch slot during which the UE will perform the beam switch. Starting at the beam switch slot, the base station may send a physical downlink shared data channel (PDSCH) transmission to the UE using the adjusted downlink transmission parameters.
    Type: Grant
    Filed: January 14, 2021
    Date of Patent: May 2, 2023
    Assignee: QUALCOMM Incorporated
    Inventors: Michael Levitsky, Raghu Narayan Challa, Ruhua He, Assaf Touboul
  • System and method for controlling beam type in signal transmission
    Patent number: 11638218
    Abstract: In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be configured to determine a PSD based on a transmission power associated with transmission of an uplink signal. The apparatus may be configured to select one of a first beam or a second beam for the transmission of the uplink signal based on the PSD. The second beam may be wider than the first beam, and may be generated by a single antenna element of the apparatus. The apparatus may be configured to transmit the uplink signal using the selected one of the first beam or the second beam.
    Type: Grant
    Filed: June 4, 2020
    Date of Patent: April 25, 2023
    Assignee: QUALCOMM Incorporated
    Inventors: Ruhua He, Shrenik Patel, Sang-June Park, Mihir Vijay Laghate, Raghu Narayan Challa
  • BEAM SELECTION FOR HIGHER UPLINK PERFORMANCE IN VIEW OF EXPOSURE LIMITS
    Publication number: 20230122075
    Abstract: Techniques and apparatus for beam selection in compliance with radio frequency (RF) exposure limits. A method that may be performed by a wireless device includes receiving, from another wireless device, a plurality of signals via a plurality of beams; measuring a received signal power for each of the beams, based on the received plurality of signals; determining a transmit power limit for each of the beams based at least in part on an RF exposure limit; determining an estimation of a signal quality at the other wireless device for each of the beams based at least in part the received signal powers and the transmit power limits; selecting one of the beams based on the estimations of the signal qualities for the beams; and transmitting a signal via the selected beam.
    Type: Application
    Filed: October 19, 2022
    Publication date: April 20, 2023
    Inventors: Jing LIN, Tienyow LIU, Raghu Narayan CHALLA, Jagadish NADAKUDUTI, Lin LU
  • TRANSMIT POWER LIMIT BASED ON SENSOR SPATIAL COVERAGE
    Publication number: 20230120500
    Abstract: Techniques and apparatus for determining a transmit power limit based on sensor spatial coverage. A method that may be performed by a wireless communication device includes selecting a beam for transmission of a signal, determining a transmit power limit based at least in part on an overlap between the selected beam and a coverage zone of a sensor, and transmitting the signal via the beam at a transmit power based at least in part on the determined transmit power limit.
    Type: Application
    Filed: October 13, 2022
    Publication date: April 20, 2023
    Inventors: Yahia RAMADAN, Farhad MESHKATI, Raghu Narayan CHALLA, Jagadish NADAKUDUTI, Lin LU, Roberto RIMINI
  • Reducing number of antenna elements for uplink transmission
    Patent number: 11632741
    Abstract: Certain aspects of the present disclosure provide techniques for reducing a quantity of antenna elements for uplink transmission. A method that may be performed by a user equipment (UE) includes determining a virtual power headroom (VPHR) associated with uplink transmission for each of a plurality of beams, selecting one or more beams of the plurality of beams for the uplink transmission based on the determination such that the VPHR associated with each of the one or more beams is at least equal to or greater than zero, and indicating a parameter associated with the one or more beams for selection of a beam to be used for the uplink transmission.
    Type: Grant
    Filed: December 27, 2020
    Date of Patent: April 18, 2023
    Assignee: QUALCOMM Incorporated
    Inventors: Mihir Vijay Laghate, Ruhua He, Junsheng Han, Raghu Narayan Challa
  • TECHNIQUES FOR IMPROVED BEAM MANAGEMENT
    Publication number: 20230110244
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may measure a beam, according to a measurement configuration, to determine a channel condition value of the beam, modify the channel condition value based at least in part on at least one of one or more beam characterizations, a derivation of a beamforming gain value, or an estimation of the beamforming gain value, and transmit, to a base station, a measurement report indicating the modified channel condition value. Numerous other aspects are provided.
    Type: Application
    Filed: December 2, 2022
    Publication date: April 13, 2023
    Inventors: Yongle WU, Mihir Vijay LAGHATE, Farhad MESHKATI, Raghu Narayan CHALLA, Jyothi Kiran VATTIKONDA
  • Scheduling network resources in wireless communication devices
    Patent number: 11627590
    Abstract: Aspects of the disclosure relate to a user equipment (UE) configured to schedule resource management procedures including measurements and tracking loop procedures. In some examples, the UE includes at least one antenna pair and two or more receivers. The UE may be configured to determine a plurality of combinations of antenna pairs and component carriers, where each component carrier is associated with a particular frequency. The UE may further be configured to schedule measurements/tracking loop procedures to available receivers first and utilize a selection algorithm to select combinations of antenna pairs and component carriers and map the selected combinations to the remaining of the available receivers to perform tracking loop procedures. Other aspects, features, and embodiments are also claimed and described.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: April 11, 2023
    Assignee: QUALCOMM INCORPORATED
    Inventors: Ting Kong, Yongle Wu, Paolo Minero, Raghu Narayan Challa, Alexei Yurievitch Gorokhov
  • Determining beam tracking frequencies using signal-to-noise ratios associated with user equipments
    Patent number: 11627476
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may detect a signal-to-noise ratio (SNR) associated with the UE. The UE may determine a beam tracking frequency based at least in part on the SNR. The UE may perform a beam tracking in accordance with the beam tracking frequency. Numerous other aspects are described.
    Type: Grant
    Filed: July 14, 2021
    Date of Patent: April 11, 2023
    Assignee: QUALCOMM Incorporated
    Inventors: Jun Zhu, Yong Li, Raghu Narayan Challa, Alexei Yurievitch Gorokhov
  • INTER-CELL MEASUREMENT AND REPORTING FOR BEAM MANAGEMENT
    Publication number: 20230107840
    Abstract: Certain aspects of the present disclosure provide techniques for inter-cell measurement and reporting. A method that may be performed by a user equipment (UE) includes sending, to a base station (BS), an indication of one or more capabilities of the UE for inter-cell signal measurements, reporting of the inter-cell signal measurements, or both. The UE may perform inter-cell signal measurement and reporting based on the one or more capabilities.
    Type: Application
    Filed: September 28, 2022
    Publication date: April 6, 2023
    Inventors: Tianyang BAI, Yan ZHOU, Ruhua HE, Tao LUO, Junyi LI, Sony AKKARAKARAN, Jelena DAMNJANOVIC, Mostafa KHOSHNEVISAN, Raghu Narayan CHALLA
  • Techniques for dynamic beamforming mitigation of millimeter wave blockages
    Patent number: 11621758
    Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may communicate with other network devices as part of a wireless communications system. The UE may identify a blockage corresponding to one or more antenna arrays of a set of antenna arrays based on using a first set of beam weights, which may correspond to a static beamforming codebook of the one or more antenna arrays. The UE may switch from a static beamforming codebook-based beam weight determination to a dynamic beamforming codebook-based beam weight determination. The UE may then determine a second set of beam weights to use for the one or more antenna arrays based on the dynamic beamforming codebook-based beam weight determination. The UE may then communicate using the one or more antenna arrays according to the second set of beam weights.
    Type: Grant
    Filed: December 6, 2021
    Date of Patent: April 4, 2023
    Assignee: QUALCOMM Incorporated
    Inventors: Vasanthan Raghavan, Mohammad Ali Tassoudji, Raghu Narayan Challa, Brian Clarke Banister
  • RECEIVE DIVERSITY TECHNIQUES IN WIRELESS COMMUNICATIONS
    Publication number: 20230098652
    Abstract: Methods, systems, and devices for wireless communications are described that provide for receive chain selection at a user equipment (UE) with efficient switching between a reduced number of receive chains and an increased number of receive chains for downlink communications based on conditions at the UE. A UE may adaptively adjust the number of active receive chains based on downlink grant activity, channel conditions, network parameters, or any combinations thereof. An estimator block at the UE may determine to adjust the number of receive chains based on a number of downlink grants within one or more time periods. In some cases, grants for an amount of data that exceeds a threshold may be qualified in order to be counted at the estimation block. Further, a transient state may be provided where the UE may maintain a higher number of active receive chains until UE feedback is provided.
    Type: Application
    Filed: September 20, 2022
    Publication date: March 30, 2023
    Inventors: Arash Ebadi Shahrivar, Peter Pui Lok Ang, Chinmay Shankar Vaze, Brian Clarke Banister, Raghu Narayan Challa, Alexei Yurievitch Gorokhov, Aamod Khandekar, Chun-Hao Hsu, Gautham Hariharan, Ambarish Tripathi, Shailesh MAHESHWARI, Sivaguru NARASAREDDY