Patents by Inventor Raghu Narayan Challa

Raghu Narayan Challa 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: 12170559
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless communication device may identify, based at least in part on a scaling factor, one or more phase weights associated with a transmit beam of the wireless communication device. The scaling factor is associated with a frequency in a frequency band associated with the wireless communication device. The wireless communication device may generate, based at least in part on the one or more phase weights, the transmit beam. The wireless communication device may transmit a wireless communication using the transmit beam. Numerous other aspects are described.
    Type: Grant
    Filed: January 5, 2023
    Date of Patent: December 17, 2024
    Assignee: QUALCOMM Incorporated
    Inventors: Surendra Kompala, Sachin Jain, Mihir Vijay Laghate, Isan Doshi, Raghu Narayan Challa
  • Publication number: 20240414516
    Abstract: Aspects are provided which allow a UE to apply new radio high-speed train mode determination and false alarm suppression in HST deployments. The UE combines a plurality of indications associated with a high-speed train (HST) mode detection into a consolidated HST mode configuration signal. The UE determines whether to suppress the consolidated HST mode configuration signal based on a mobility metric of the UE and a plurality of thresholds. The UE transitions into a HST mode when the consolidated HST mode configuration signal is not suppressed based on the mobility metric of the UE exceeding at least one of the plurality of thresholds. As a result, false HST mode flags may be avoided and HST mode detection success rates may thereby be improved.
    Type: Application
    Filed: December 10, 2021
    Publication date: December 12, 2024
    Inventors: Yongle WU, Jiaheng LIU, Shanshan WANG, Nanrun WU, Ashok MANTRAVADI, Raghu Narayan CHALLA
  • Publication number: 20240405844
    Abstract: Method and apparatus for a beam panic design. The apparatus measures at least one subset of beams of a set of beams received from a network entity. The apparatus monitors for a change within a subset of the measured beams having a highest signal quality. The apparatus measures a rate of the change of the subset of the measured beams having the highest signal quality, in response to detection of an occurrence of the change of the subset of the measured beams having the highest signal quality.
    Type: Application
    Filed: June 1, 2023
    Publication date: December 5, 2024
    Inventors: Kang GAO, Jun ZHU, Mihir Vijay LAGHATE, Raghu Narayan CHALLA
  • Publication number: 20240396598
    Abstract: Example implementations include a method, apparatus and computer-readable medium for wireless communication configured for estimating a channel using a set of predefined sensing beams to measure reference signals. Estimating the channel may include generating an N×N channel correlation matrix, where N is a number of antenna elements in the antenna array. The implementations further include generating a set of dynamic beam weights to maximize a reference signal received power (RSRP) based on the estimated channel. The set of dynamic beam weights may be based on an eigenvector of the channel correlation matrix. Additionally, the implementations further include applying the set of dynamic beam weights to an antenna array.
    Type: Application
    Filed: May 26, 2023
    Publication date: November 28, 2024
    Inventors: Kang GAO, Vasanthan Raghavan, Yongle Wu, Jun Zhu, Raghu Narayan Challa
  • Patent number: 12150106
    Abstract: A UE may be configured to select narrower or wider beams that may be suitable for use with a current UE mobility, scattering environment, etc. The UE may track changes to an identified beam of a certain width, and so may recover from tracking or other radio link failures by switching to a beam that is spatially adjacent or to a beam of a different width. The UE may identify a first beam associated with a first beam width based on at least one reference signal received by the UE. The UE may further determine a set of beams based on the first beam width that is associated with the identified first beam, and the determined set of beams may include at least one beam corresponding to the first beam width. The UE may further measure respective channel qualities associated with each beam of the determined set of beams.
    Type: Grant
    Filed: October 26, 2022
    Date of Patent: November 19, 2024
    Assignee: QUALCOMM Incorporated
    Inventors: Mihir Vijay Laghate, Raghu Narayan Challa, Jun Zhu, Mingming Cai, Yong Li, Ruhua He
  • Patent number: 12149996
    Abstract: Certain aspects of the present disclosure provide techniques for cell measurement scheduling mode selection. According to certain aspects, a method for wireless communications by a user equipment (UE), generally includes selecting a first scheduling mode for performing cell measurements while the UE is in an idle state, in response to detecting at least one first triggering condition based on a comparison of a serving cell measurement to one or more neighbor cell measurements and performing cell measurements in accordance with the first scheduling mode, wherein the UE performs cell measurement more frequently when the first scheduling mode is selected than when a second scheduling mode is selected.
    Type: Grant
    Filed: January 14, 2022
    Date of Patent: November 19, 2024
    Assignee: QUALCOMM Incorporated
    Inventors: Yongle Wu, Alexei Yurievitch Gorokhov, Raghu Narayan Challa
  • Publication number: 20240380470
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, for a UE beam refinement procedure, a reference signal via a first network node beam. The UE may receive, based at least in part on the UE beam refinement procedure, an indication of a switch to the first network node beam from a second network node beam. Numerous other aspects are described.
    Type: Application
    Filed: December 28, 2023
    Publication date: November 14, 2024
    Inventors: Ruhua HE, Derrick Albert CHU, Raghu Narayan CHALLA
  • Publication number: 20240380478
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may identify, for each of one or more candidate beams in a set of candidate beams, a downlink throughput, an uplink throughput, a downlink power consumption, and an uplink power consumption. The UE may select a beam based at least in part on: at least one of the downlink throughput or the uplink throughput, at least one of the downlink power consumption or the uplink power consumption, and one or more throughput thresholds. The UE may communicate using the selected beam. Numerous other aspects are described.
    Type: Application
    Filed: December 14, 2023
    Publication date: November 14, 2024
    Inventors: Jun Zhu, Mihir Vijay Laghate, Raghu Narayan Challa, Brian Clarke Banister
  • Patent number: 12143165
    Abstract: Various aspects of the present disclosure generally relate to wireless communication and testing. In some aspects, a device may receive information identifying a mount orientation of a wireless communication device, wherein the mount orientation indicates an orientation of a coordinate system of the wireless communication device relative to a coordinate system of a positioner. The device may capture measurement information at each position of a set of positions of the wireless communication device, wherein the set of positions comprises positions of the wireless communication device as the wireless communication device is rotated around an axis by the positioner, and wherein the measurement information is captured based at least in part on the mount orientation. The device may provide information identifying the measurement information. Some techniques and apparatuses described herein may use the measurement information to generate a codebook for beam generation. Numerous other aspects are provided.
    Type: Grant
    Filed: August 18, 2023
    Date of Patent: November 12, 2024
    Assignee: QUALCOMM Incorporated
    Inventors: Mingming Cai, Raghu Narayan Challa, Revathi Sundara Raghavan, Michael Burke, Abhilash Bangalore Ravi, Mihir Vijay Laghate, Shrenik Patel, Sang-June Park, Mohammad Ali Tassoudji, Sudarsan Krishnan, Vasanthan Raghavan, Siddharth Kamath
  • Publication number: 20240357507
    Abstract: A UE may calculate an allocation of a transmission power for a first uplink transmission on a first uplink channel and at least one second uplink transmission on at least one second uplink channel, the transmission power being allocated in each symbol of a plurality of symbols in a slot. The UE may detect a transmission power change in the allocation of the transmission power in the slot for at least one of the first uplink transmission or the at least one second uplink transmission. The UE may determine whether to adjust the allocation of the transmission power for the at least one of the first uplink transmission or the at least one second uplink transmission to eliminate the transmission power change in the slot for the at least one of the first uplink transmission or the at least one second uplink transmission.
    Type: Application
    Filed: March 4, 2024
    Publication date: October 24, 2024
    Inventors: Brahim SAADI, Dinesh Kumar DEVINENI, Rajeev MALASANI, Anoop RAMAKRISHNA, Ruhua HE, Enoch Shiao-Kuang LU, Raghu Narayan CHALLA
  • Publication number: 20240357522
    Abstract: Aspects described herein relate to receiving, from a base station, a transmit beam including a synchronization signal block (SSB) of multiple broadcast signals transmitted over multiple symbols, wherein receiving the transmit beam includes switching among multiple receive beams for each of the multiple symbols to receive a corresponding broadcast signal of the multiple broadcast signals, measuring a signal metric of each of the multiple broadcast signals as received via a corresponding receive beam of the multiple receive beams in a corresponding symbol of the multiple symbols, and selecting, based on the signal metric measured for each of the multiple broadcast signals, a receive beam of the multiple receive beams for communicating with the base station.
    Type: Application
    Filed: May 1, 2024
    Publication date: October 24, 2024
    Inventors: Jun ZHU, Ruhua HE, Mihir Vijay LAGHATE, Yong LI, Raghu Narayan CHALLA
  • Patent number: 12114180
    Abstract: A method for wireless communication performed by a head-mounted user equipment (UE), the method includes determining a first spatial relationship between an eye of a human user of the head-mounted UE and physical transmission and reception ports of the head-mounted UE; based on the first spatial relationship, determining a second spatial relationship between a plurality of radio frequency (RF) beam directions of the head-mounted UE and the eye of the human user; selecting a first RF beam direction from among the plurality of RF beam directions based at least in part on the second spatial relationship with respect to the first RF beam direction; and transmitting or receiving RF radiation using a first RF beam conforming to the first RF beam direction.
    Type: Grant
    Filed: January 24, 2022
    Date of Patent: October 8, 2024
    Assignee: QUALCOMM Incorporated
    Inventors: Danlu Zhang, Brian Momeyer, Brian Clarke Banister, Udara Fernando, Eyosias Yoseph Imana, Raghu Narayan Challa, Jiaying Pan, Xiaoxin Zhang, Bala Ramasamy
  • Patent number: 12114360
    Abstract: Methods, systems, and devices for wireless communications are described. The described techniques provide for selecting a PRACH occasion (RO) based on downlink quality, access congestion, latency (e.g., time to next available RO), beam correspondence, random access in previous transmissions, or combinations of these factors. The user equipment (UE) may detect access congestion of synchronization signal blocks (SSBs) and select the less congested SSB in the RO selection. The UE may detect the access congestion by receiving a back-off indicator from the base station, detecting a contention resolution failure, or the number or media access control (MAC) subheaders in a random access response. In some cases, the ROs associated with different SSBs have different latencies and the UE may select the earliest available RO.
    Type: Grant
    Filed: March 13, 2020
    Date of Patent: October 8, 2024
    Inventors: Junsheng Han, Muhammad Nazmul Islam, Raghu Narayan Challa, Mihir Vijay Laghate, Amir Aminzadeh Gohari, Alexei Yurievitch Gorokhov
  • Publication number: 20240322886
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit an indication of whether the UE has a capability to report multiple transmit receive point (mTRP) Layer 1 (L1) measurements for both mTRP beam management and single TRP (sTRP) beam management. The UE may transmit an L1 measurement report that includes mTRP L1 measurements. Numerous other aspects are described.
    Type: Application
    Filed: March 22, 2023
    Publication date: September 26, 2024
    Inventors: Jae Ho RYU, Changhwan PARK, Ruhua HE, Yongle WU, Raghu Narayan CHALLA
  • Patent number: 12096376
    Abstract: Methods, systems, and devices for wireless communications are described that support techniques for transmission power determination for radio frequency (RF) exposure compliance. A transmitting device, such as a user equipment (UE) may determine an uplink transmit power limit for a time window based on an RF limit and a duration of the time window. The device may use the power limit to determine an uplink transmit power based on a computed uplink transmission period for the time window that accounts for a time period during which the device is expected to actually transmit. The computed uplink transmission period may be based on one or more actual uplink transmission periods during one or more prior time windows, a predictive model, network signaling, or any combinations thereof. The device may transmit one or more uplink transmissions during the time window using the determined uplink transmit power.
    Type: Grant
    Filed: March 15, 2022
    Date of Patent: September 17, 2024
    Assignee: QUALCOMM Incorporated
    Inventors: Farhad Meshkati, Raghu Narayan Challa, Tienyow Liu
  • Publication number: 20240306247
    Abstract: Apparatus, methods, and computer-readable media for facilitating multi-tasking and smart location selection during connected-mode discontinuous reception (CDRX) mode are disclosed herein. Example techniques disclosed herein enable a UE to perform multiple tasks during a same SSBS to reduce the number of wake-up SSBSs. For example, disclosed techniques enable a UE to perform RLM tasks and loop tracking tasks during a first SSBS and thereby reduce the number of wake-up SSBSs. In some examples, the UE may also perform the search task or the measurement task during the same first SSBS and, thereby, further reduce the number of wake-up SSBSs. Example techniques disclosed herein may also enable the UE to select which SSBS occurrences to wake-up for during the OFF duration of the CDRX cycle.
    Type: Application
    Filed: May 16, 2024
    Publication date: September 12, 2024
    Inventors: Ting KONG, Jafar MOHSENI, Zae Yong CHOI, Yongle WU, Raghu Narayan CHALLA, Alexei Yurievitch GOROKHOV, Yong LI
  • Publication number: 20240297686
    Abstract: A UE may identify a channel correlation matrix for a channel between the UE and a network node. The UE may identify whether the channel is associated with an LOS condition based on the channel correlation matrix. The UE may obtain a plurality of eigenvalues of the channel correlation matrix based on an eigen decomposition operation on the channel correlation matrix. The UE may identify whether the channel is associated with the LOS condition based on the plurality of eigenvalues of the channel correlation matrix. The UE may identify that the channel is associated with the LOS condition if a difference between a greatest eigenvalue in the plurality of eigenvalues and an average of other eigenvalues in the plurality of eigenvalues is greater than a threshold. Otherwise, the UE may identify that the channel is not associated with the LOS condition.
    Type: Application
    Filed: March 2, 2023
    Publication date: September 5, 2024
    Inventors: Kang GAO, Jun ZHU, Raghu Narayan CHALLA
  • Patent number: 12068829
    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: Grant
    Filed: September 20, 2022
    Date of Patent: August 20, 2024
    Assignee: QUALCOMM Incorporated
    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
  • Patent number: 12068828
    Abstract: An apparatus (e.g., a UE) may be configured to configure a plurality of orthogonal scrambling codes corresponding to a plurality of antenna panels of the UE and perform, for a first SSB transmission, a beam sweeping operation over a set of first beams for each antenna panel in the plurality of antenna panels, where, for a transmitted first signal in each symbol of the first SSB transmission, each antenna panel in the plurality of antenna panels receives the transmitted first signal via a beam in the set of first beams using an orthogonal scrambling code in the plurality of orthogonal scrambling codes corresponding to the antenna panel.
    Type: Grant
    Filed: July 8, 2022
    Date of Patent: August 20, 2024
    Assignee: QUALCOMM Incorporated
    Inventors: Jun Zhu, Kang Gao, Mihir Vijay Laghate, Raghu Narayan Challa
  • Patent number: 12063524
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a UE may communicate via a serving beam set of the UE, the serving beam set being one or more of a plurality of beams. The UE may measure another beam set in accordance with a measurement schedule configured to prioritize measurement on one or more adjacent beam sets associated with the serving beam set over one or more non-adjacent beam sets associated with the serving beam set. In some aspects, the one or more adjacent beam sets may be associated with one or more coverage areas that at least partially overlap a coverage area of the serving beam set, are adjacent to the coverage area of the serving beam set, or are associated with a measurement value that satisfies a threshold in the coverage area of the serving beam set. Numerous other aspects are provided.
    Type: Grant
    Filed: April 28, 2023
    Date of Patent: August 13, 2024
    Assignee: QUALCOMM Incorporated
    Inventors: Mihir Vijay Laghate, Mingming Cai, Raghu Narayan Challa, Michael Burke, Revathi Sundara Raghavan, Siddharth Kamath