Patents by Inventor Rohit U. Nabar

Rohit U. Nabar 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: 12207100
    Abstract: An electronic device may be provided with wireless circuitry and control circuitry. The wireless circuitry may include a phased antenna array. Sensors and other circuitry in the electronic device may generate sensor data such as accelerometer data, gyroscope data, magnetometer data, location data, and spatial ranging data. The wireless circuitry may establish and maintain one or more wireless links with external devices based on the sensor data as the device moves over time. For example, the wireless circuitry may perform physical layer beam adjustments, inter-radio access technology handovers, intra-radio access technology handovers, and/or dual connectivity adjustments based on the sensor data. This may allow the device to maintain one or more wireless links without having to sweep the signal beam of the phased antenna array over its entire field of view each time the device has moved.
    Type: Grant
    Filed: March 22, 2021
    Date of Patent: January 21, 2025
    Assignee: Apple Inc.
    Inventors: Yakun Sun, Mingguang Xu, Mithat C. Dogan, Ehsan Haghani, Rohit U. Nabar, Matthew A. Mow
  • Patent number: 12191970
    Abstract: The present application relates to devices and components including apparatus, systems, and methods for determining a beam for communication between a user equipment and a base station. For example, angle of arrival estimates may be utilized for determining the beam for communication.
    Type: Grant
    Filed: December 20, 2023
    Date of Patent: January 7, 2025
    Assignee: Apple Inc.
    Inventors: Yakun Sun, Rohit U. Nabar, Mithat C. Dogan, Parvathanathan Subrahmanya, Han Yan, Louay Jalloul
  • Publication number: 20240381305
    Abstract: Systems and methods for using ranging signals with cellular devices. The ranging signals may utilize ranging slots and resources at least partially allocated by a cellular network. The resources may include frequencies used for uplink or downlink communications between the cellular network and the cellular devices. Alternatively, the resources may include frequencies outside of a spectrum used for communication between the cellular network and the cellular devices.
    Type: Application
    Filed: July 9, 2024
    Publication date: November 14, 2024
    Inventors: Anatoliy Sergey Ioffe, Rohit U. Nabar, Rastislav Vazny
  • Patent number: 12137440
    Abstract: Methods and systems include beamformed wireless communications to and from a user equipment electronic device. During operation of the user equipment electronic device, a change in slot aggregation is made. Using the aggregated slots, the user equipment electronic device and/or a wireless network utilize beam sweeps to determine a best beam pairing by repeating a shared channel in the aggregated slots with a beam sweep of multiple beams between the user equipment electronic device and the wireless network.
    Type: Grant
    Filed: September 7, 2022
    Date of Patent: November 5, 2024
    Assignee: Apple Inc.
    Inventors: Yakun Sun, Anatoliy S. Ioffe, Ehsan Haghani, Rohit U. Nabar
  • Patent number: 12132551
    Abstract: Methods and apparatuses are disclosed for performing fast beam tracking in a wireless communication environment. A UE signals to a gNB its capabilities for intra-symbol beam sweeping. Depending on configuration, the UE can either assume that the intra-symbol beam sweeping configuration will be implemented, or will await a response from the gNB before implementing intra-symbol beam sweeping. Although this is generally carried out during initial access between the UE and the gNB, the beam sweeping configuration can be dynamically updated by either the UE or the gNB during established communication. For example, the UE can signal a desired change via its MAC CE, and the gNB can signal its change to the UE via DCI.
    Type: Grant
    Filed: August 5, 2020
    Date of Patent: October 29, 2024
    Assignee: APPLE INC.
    Inventors: Yushu Zhang, Haitong Sun, Yakun Sun, Weidong Yang, Wei Zeng, Dawei Zhang, Rohit U. Nabar
  • Patent number: 12119895
    Abstract: Methods and apparatus provide for a wireless network to enable multiple-transmission reception point (multi-TRP) uplink (UL) time division multiplexed (TDMed) repetition transmission. The network may receive, from a user equipment (UE), beam measurements of downlink reference signals associated with a plurality of UL transmission beams from the UE to the multi-TRP. Based on criteria associated with the beam measurements received from the UE, the network enables the UE for the multi-TRP UL TDMed repetition transmission using the plurality of UL transmission beams. In addition, or in other scenarios, coordination is provided between the network and the UE to improve UL TDMed repetition transmissions when a UE switches between antenna panels.
    Type: Grant
    Filed: March 31, 2021
    Date of Patent: October 15, 2024
    Assignee: APPLE INC.
    Inventors: Manasa Raghavan, Dawei Zhang, Haitong Sun, Huaning Niu, Jie Cui, Qiming Li, Rohit U. Nabar, Xiang Chen, Yakun Sun, Yang Tang, Yushu Zhang
  • Publication number: 20240314699
    Abstract: Methods and systems for controlling uplink (UL) transmission power of a user equipment (UE) electronic device includes determining, using the UE electronic device, that a maximum power availability for a transmission between the UE and a wireless network node is not appropriate to current conditions. Based on the determination that maximum power availability is not appropriate the UE electronic device sends a request to the wireless network node to reduce power for communication with the wireless network node. Based on the request, the UE electronic device communicates at a reduced power level for communications with the wireless network node.
    Type: Application
    Filed: May 28, 2024
    Publication date: September 19, 2024
    Inventors: Yakun Sun, Anatoliy S. Ioffe, Ehsan Haghani, Rohit U. Nabar
  • Patent number: 12063621
    Abstract: Systems and methods for using ranging signals with cellular devices. The ranging signals may utilize ranging slots and resources at least partially allocated by a cellular network. The resources may include frequencies used for uplink or downlink communications between the cellular network and the cellular devices. Alternatively, the resources may include frequencies outside of a spectrum used for communication between the cellular network and the cellular devices.
    Type: Grant
    Filed: January 14, 2022
    Date of Patent: August 13, 2024
    Assignee: Apple Inc.
    Inventors: Anatoliy Sergey Ioffe, Rohit U. Nabar, Rastislav Vazny
  • Patent number: 12028813
    Abstract: Methods and systems for controlling uplink (UL) transmission power of a user equipment (UE) electronic device includes determining, using the UE electronic device, that a maximum power availability for a transmission between the UE and a wireless network node is not appropriate to current conditions. Based on the determination that maximum power availability is not appropriate the UE electronic device sends a request to the wireless network node to reduce power for communication with the wireless network node. Based on the request, the UE electronic device communicates at a reduced power level for communications with the wireless network node.
    Type: Grant
    Filed: April 13, 2022
    Date of Patent: July 2, 2024
    Assignee: Apple Inc.
    Inventors: Yakun Sun, Anatoliy S. Ioffe, Ehsan Haghani, Rohit U. Nabar
  • Publication number: 20240162970
    Abstract: The present application relates to devices and components including apparatus, systems, and methods for determining a beam for communication between a user equipment and a base station. For example, angle of arrival estimates may be utilized for determining the beam for communication.
    Type: Application
    Filed: December 20, 2023
    Publication date: May 16, 2024
    Applicant: Apple Inc.
    Inventors: Yakun Sun, Rohit U. Nabar, Mithat C. Dogan, Parvathanathan Subrahmanya, Han Yan, Louay Jalloul
  • Patent number: 11943024
    Abstract: The present application relates to devices and components including apparatus, systems, and methods to provide beamforming scheme selection and signaling in wireless communication systems.
    Type: Grant
    Filed: June 14, 2021
    Date of Patent: March 26, 2024
    Assignee: Apple Inc.
    Inventors: Yushu Zhang, Dawei Zhang, Haitong Sun, Rohit U. Nabar, Wei Zeng, Weidong Yang, Yakun Sun
  • Patent number: 11902003
    Abstract: Systems and methods related to partial beam correspondence may be used to address potential limitations of beamforming wireless networks. A user equipment electronic device and/or wireless network identifies a subset of available transmitter beams for the user equipment electronic device that are indicated as similar to a downlink reference signal received at the user equipment electronic device from a wireless network node. The user equipment electronic device sweeps the subset of available transmitter beams for communication with the wireless network node and uses a best beam from the sweep to communicate with the wireless network node.
    Type: Grant
    Filed: December 10, 2021
    Date of Patent: February 13, 2024
    Assignee: Apple Inc.
    Inventors: Yakun Sun, Anatoliy S. Ioffe, Ehsan Haghani, Rohit U. Nabar
  • Patent number: 11894909
    Abstract: The present application relates to devices and components including apparatus, systems, and methods for determining a beam for communication between a user equipment and a base station. For example, angle of arrival estimates may be utilized for determining the beam for communication.
    Type: Grant
    Filed: August 1, 2022
    Date of Patent: February 6, 2024
    Assignee: APPLE INC.
    Inventors: Yakun Sun, Rohit U. Nabar, Mithat C. Dogan, Parvathanathan Subrahmanya, Han Yan, Louay Jalloul
  • Publication number: 20230421295
    Abstract: A preamble of physical layer (PHY) data unit includes a first legacy portion and a first non-legacy portion that follows the first legacy portion. The first non-legacy portion includes i) a first orthogonal frequency division multiplexing (OFDM) symbol that immediately follows the first legacy portion and that is modulated using binary phase shift keying (BPSK), and ii) a second OFDM symbol that immediately follows the first OFDM symbol and that is modulated using BPSK modulation rotated by 90 degrees (Q-BPSK). The modulation of the first and second OFDM symbols indicates to a receiver device that conforms to a first communication protocol that the data unit conforms to the first communication protocol. The first OFDM symbol being modulated using BPSK modulation causes a receiver device that conforms to a second communication protocol to determine that the PHY data unit conforms to a third communication protocol.
    Type: Application
    Filed: September 11, 2023
    Publication date: December 28, 2023
    Inventors: Hongyuan ZHANG, Hui-Ling LOU, Rohit U. NABAR, Sudhir SRINIVASA, Mao YU, Raja BANERJEA
  • Patent number: 11757570
    Abstract: A first portion of a physical layer (PHY) preamble of a PHY data unit is generated for transmission via a communication channel that comprises a plurality of sub-channels. A first portion of the PHY preamble is generated to include a legacy portion and a plurality of first non-legacy signal fields spanning the respective sub-channels. A second portion of a PHY preamble that immediately follows the first portion of the PHY preamble of the PHY data unit is generated to include: a non-legacy short training field spanning all sub-channels in the plurality of sub-channels, a plurality of non-legacy long training fields immediately following the non-legacy short training field, each non-legacy training field spanning all sub-channels in the plurality of sub-channels, and a second non-legacy signal field immediately following the plurality of non-legacy long training fields, the second-legacy signal field spanning all sub-channels in the plurality of sub-channels.
    Type: Grant
    Filed: May 28, 2021
    Date of Patent: September 12, 2023
    Assignee: Marvell Asia Pte Ltd
    Inventors: Hongyuan Zhang, Hui-Ling Lou, Rohit U. Nabar, Sudhir Srinivasa, Mao Yu, Raja Banerjea
  • Patent number: 11751176
    Abstract: Methods and systems include beamformed wireless communications to and from a user equipment electronic device. During operation of the user equipment electronic device, a change in slot aggregation is made. Using the aggregated slots, the user equipment electronic device and/or a wireless network utilize beam sweeps to determine a best beam pairing by repeating a shared channel in the aggregated slots with a beam sweep of multiple beams between the user equipment electronic device and the wireless network.
    Type: Grant
    Filed: November 1, 2019
    Date of Patent: September 5, 2023
    Assignee: Apple Inc.
    Inventors: Yakun Sun, Anatoliy S. Ioffe, Ehsan Haghani, Rohit U. Nabar
  • Publication number: 20230208475
    Abstract: Methods and apparatus provide for a wireless network to enable multiple-transmission reception point (multi-TRP) uplink (UL) time division multiplexed (TDMed) repetition transmission. The network may receive, from a user equipment (UE), beam measurements of downlink reference signals associated with a plurality of UL transmission beams from the UE to the multi-TRP. Based on criteria associated with the beam measurements received from the UE, the network enables the UE for the multi-TRP UL TDMed repetition transmission using the plurality of UL transmission beams. In addition, or in other scenarios, coordination is provided between the network and the UE to improve UL TDMed repetition transmissions when a UE switches between antenna panels.
    Type: Application
    Filed: March 31, 2021
    Publication date: June 29, 2023
    Inventors: Manasa Raghavan, Dawei Zhang, Haitong Sun, Huaning Niu, Jie Cui, Qiming Li, Rohit U. Nabar, Xiang Chen, Yakun Sun, Yang Tang, Yushu Zhang
  • Publication number: 20230155658
    Abstract: Methods and apparatuses are disclosed for performing fast beam tracking in a wireless communication environment. A UE signals to a gNB its capabilities for intra-symbol beam sweeping. Depending on configuration, the UE can either assume that the intra-symbol beam sweeping configuration will be implemented, or will await a response from the gNB before implementing intra-symbol beam sweeping. Although this is generally carried out during initial access between the UE and the gNB, the beam sweeping configuration can be dynamically updated by either the UE or the gNB during established communication. For example, the UE can signal a desired change via its MAC CE, and the gNB can signal its change to the UE via DCI.
    Type: Application
    Filed: August 5, 2020
    Publication date: May 18, 2023
    Applicant: Apple Inc.
    Inventors: Yushu ZHANG, Haitong SUN, Yakun SUN, Weidong YANG, Wei ZENG, Dawei ZHANG, Rohit U. NABAR
  • Publication number: 20230143225
    Abstract: User equipment in close proximity may transfer data and control information. For example, the user equipment may exchange data or data sets between each other. Each user equipment can receive and transmit data using radio access technologies. A group of user equipments may include active user equipment and passive user equipment. Active user equipment connects with one or more base stations and transfers data on a wireless communication network via the base station. The active user equipment may communicate with other active user equipment and passive user equipment. Passive user equipment may not connect to any base station and/or the wireless communication network and may communicate with other passive user equipment and active user equipment (e.g., via a sidelink, peer-to-peer, or device-to-device channel).
    Type: Application
    Filed: August 3, 2022
    Publication date: May 11, 2023
    Inventors: Sharad Sambhwani, Dirk Nickisch, Madhukar K Shanbhag, Rohit U Nabar, Sanjeevi Balasubramanian, Shiva Krishna Narra, Sriram Subramanian, Tarik Tabet, Vishwanth Kamala Govindaraju, Yakun Sun, Parvathanathan Subrahmanya
  • Publication number: 20230148128
    Abstract: User equipment in close proximity may transfer data and control information. For example, the user equipment may exchange data or data sets between each other. Each user equipment can receive and transmit data using radio access technologies. A group of user equipments may include active user equipment and passive user equipment. Active user equipment connects with one or more base stations and transfers data on a wireless communication network via the base station. The active user equipment may communicate with other active user equipment and passive user equipment. Passive user equipment may not connect to any base station and/or the wireless communication network and may communicate with other passive user equipment and active user equipment (e.g., via a sidelink, peer-to-peer, or device-to-device channel).
    Type: Application
    Filed: August 3, 2022
    Publication date: May 11, 2023
    Inventors: Sharad Sambhwani, Dirk Nickisch, Madhukar K Shanbhag, Rohit U Nabar, Sanjeevi Balasubramanian, Shiva Krishna Narra, Sriram Subramanian, Tarik Tabet, Vishwanth Kamala Govindaraju, Yakun Sun, Parvathanathan Subrahmanya