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).

  • Publication number: 20220302973
    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: Application
    Filed: June 14, 2021
    Publication date: September 22, 2022
    Applicant: Apple Inc.
    Inventors: Yushu Zhang, Dawei Zhang, Haitong Sun, Rohit U. Nabar, Wei Zeng, Weidong Yang, Yakun Sun
  • Publication number: 20220303091
    Abstract: The present application relates to devices and components including apparatus, systems, and methods to provide channel-based beamforming in wireless communication systems.
    Type: Application
    Filed: June 15, 2021
    Publication date: September 22, 2022
    Applicant: Apple Inc.
    Inventors: Yushu Zhang, Dawei Zhang, Haitong Sun, Rohit U. Nabar, Wei Zeng, Weidong Yang, Yakun Sun
  • Publication number: 20220248337
    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: April 13, 2022
    Publication date: August 4, 2022
    Inventors: Yakun Sun, Anatoliy S. Ioffe, Ehsan Haghani, Rohit U. Nabar
  • Publication number: 20220174643
    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: January 14, 2022
    Publication date: June 2, 2022
    Inventors: Anatoliy Sergey Ioffe, Rohit U. Nabar, Rastislav Vazny
  • Patent number: 11310748
    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: February 12, 2021
    Date of Patent: April 19, 2022
    Assignee: Apple Inc.
    Inventors: Yakun Sun, Anatoliy S. Ioffe, Ehsan Haghani, Rohit U. Nabar
  • Publication number: 20220103238
    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: Application
    Filed: December 10, 2021
    Publication date: March 31, 2022
    Inventors: Yakun Sun, Anatoliy S. Ioffe, Ehsan Haghani, Rohit U. Nabar
  • Patent number: 11265119
    Abstract: A system includes a stream parser, a multiplexer, and a plurality of transmission paths. The stream parser is configured to parse an input data stream for a packet into a plurality of spatial streams for transmission via a plurality of transmission paths over a plurality of wireless channels, respectively. The multiplexer is configured to multiplex data from the stream parser onto the plurality of transmission paths for each of the plurality of spatial streams. The plurality of transmission paths is configured to generate portions of the packet based on outputs of the multiplexer and to transmit the portions of the packet via the plurality of transmission paths over the plurality of wireless channels, respectively, using different carrier frequencies corresponding to different frequency bands for each of the portions of the packet.
    Type: Grant
    Filed: August 21, 2019
    Date of Patent: March 1, 2022
    Assignee: MARVELL ASIA PTE, LTD.
    Inventors: Hongyuan Zhang, Hui-Ling Lou, Rohit U. Nabar
  • Patent number: 11229002
    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: March 19, 2020
    Date of Patent: January 18, 2022
    Assignee: Apple Inc.
    Inventors: Anatoliy Sergey Ioffe, Rohit U. Nabar, Rastislav Vazny
  • Patent number: 11201662
    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: November 1, 2019
    Date of Patent: December 14, 2021
    Assignee: Apple Inc.
    Inventors: Yakun Sun, Anatoliy S. Ioffe, Ehsan Haghani, Rohit U. Nabar
  • Publication number: 20210288754
    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: Application
    Filed: May 28, 2021
    Publication date: September 16, 2021
    Inventors: Hongyuan ZHANG, Hui-Ling LOU, Rohit U. NABAR, Sudhir SRINIVASA, Mao YU, Raja BANERJEA
  • Publication number: 20210211894
    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: Application
    Filed: March 22, 2021
    Publication date: July 8, 2021
    Inventors: Yakun Sun, Mingguang Xu, Mithat C. Dogan, Ehsan Haghani, Rohit U. Nabar, Matthew A. Mow
  • Patent number: 11039440
    Abstract: An access point (AP) device assigns respective blocks of orthogonal frequency division multiplexing (OFDM) tones to a plurality of client stations for an orthogonal frequency division multiple access (OFDMA) data unit. The AP device receives respective independent data for the plurality of client stations, and generates a preamble of the OFDMA data unit to include: respective legacy preamble portions in respective sub-channels. Each legacy preamble portion includes a legacy signal field that indicates a duration of the OFDMA data unit, and a non-legacy preamble portion. The AP device also generates a data portion of the OFDMA data unit to include respective independent data for respective client stations. The respective independent data are included within the respective blocks of OFDM tones.
    Type: Grant
    Filed: October 28, 2019
    Date of Patent: June 15, 2021
    Assignee: NXP USA, INC.
    Inventors: Hongyuan Zhang, Rohit U. Nabar, Hui-Ling Lou
  • Publication number: 20210176712
    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: February 12, 2021
    Publication date: June 10, 2021
    Inventors: Yakun Sun, Anatoliy S. Ioffe, Ehsan Haghani, Rohit U. Nabar
  • Patent number: 11025368
    Abstract: A preamble of a physical layer (PHY) data unit that conforms to a first communication protocol is generated. The preamble includes a legacy field that is formatted according to a second communication protocol, and a signal field having a first orthogonal frequency division multiplexing (OFDM) symbol and a second OFDM symbol. The first OFDM symbol (i) immediately follows the legacy field and (ii) is modulated using binary phase shift keying (BPSK) modulation, whereas a third communication protocol specifies that an OFDM symbol, defined by the third communication protocol, that immediately follows the legacy field is modulated using BPSK modulation rotated by 90 degrees (Q-BPSK). The second OFDM symbol (i) immediately follows the first OFDM symbol and (ii) is modulated using Q-BPSK to indicate to a receiver device that conforms to the first communication protocol that the data unit conforms to the first communication protocol.
    Type: Grant
    Filed: May 15, 2017
    Date of Patent: June 1, 2021
    Assignee: Marvell Asia Pte, Ltd.
    Inventors: Hongyuan Zhang, Hui-Ling Lou, Rohit U. Nabar, Sudhir Srinivasa, Mao Yu, Raja Banerjea
  • Patent number: 11006480
    Abstract: A communication device generates a physical layer (PHY) data unit that includes a PHY preamble and one or more PHY midambles. The communication generates the PHY preamble of the PHY data unit to include i) a signal field having a subfield that indicates that the PHY data unit includes one or more PHY midambles, ii) a short training field (STF) for automatic gain control (AGC) training and synchronization at a receiver, and iii) one or more long training fields (LTFs) for determining a channel estimate at the receiver. The communication generates a data payload of the PHY data unit having i) a set of orthogonal frequency division multiplexing (OFDM) symbols, and ii) one or more PHY midambles. Each of the one or more PHY midambles includes one or more LTFs for determining an updated channel estimate. The communication device transmits the PHY data unit via a wireless communication channel.
    Type: Grant
    Filed: July 29, 2019
    Date of Patent: May 11, 2021
    Assignee: Marvell Asia Pte, Ltd.
    Inventors: Hongyuan Zhang, Rohit U. Nabar, Sudhir Srinivasa, Raja Banerjea, Yong Liu
  • Patent number: 10986510
    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: September 25, 2018
    Date of Patent: April 20, 2021
    Assignee: Apple Inc.
    Inventors: Yakun Sun, Mingguang Xu, Mithat C. Dogan, Ehsan Haghani, Rohit U. Nabar, Matthew A. Mow
  • Patent number: 10980035
    Abstract: An electronic device may be provided with wireless circuitry and control circuitry. The wireless circuitry may communicate using a 5G New Radio (NR) protocol. The wireless circuitry may have multiple bandwidth part configurations. The control circuitry may place the wireless circuitry in a first bandwidth part configuration where a first bandwidth part of a first component carrier is active and a second bandwidth part of a second component carrier is inactive. The control circuitry may switch the wireless circuitry from the first bandwidth part configuration to a second bandwidth part configuration in which the first bandwidth part is inactive and the second bandwidth part is active. The first and second component carriers may be intra-band contiguous, intra-band non-contiguous, or inter-band. The control circuitry may switch the wireless circuitry into other configurations for covering other bandwidth parts of any desired component carriers in any desired bands.
    Type: Grant
    Filed: December 2, 2019
    Date of Patent: April 13, 2021
    Assignee: Apple Inc.
    Inventors: Anatoliy S. Ioffe, Ehsan Haghani, Yakun Sun, Rohit U. Nabar, Rodney A. Gomez Angulo
  • Publication number: 20210076349
    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: March 19, 2020
    Publication date: March 11, 2021
    Inventors: Anatoliy Sergey Ioffe, Rohit U. Nabar, Rastislav Vazny
  • Patent number: 10931708
    Abstract: This disclosure relates to techniques for performing secure ranging wireless communication. A first wireless device may receive a ranging packet from a second wireless device in a wireless manner. The ranging packet may include a first random sequence portion and a second random sequence portion. The first wireless device may perform one or more channel and noise estimations for the ranging packet. The first wireless device may perform one or more security checks for the ranging packet based on any or all of the first random sequence portion, the second random sequence portion, or the channel and noise estimation(s).
    Type: Grant
    Filed: September 3, 2019
    Date of Patent: February 23, 2021
    Assignee: Apple Inc.
    Inventors: Mingguang Xu, Mithat C. Dogan, Yakun Sun, Rohit U. Nabar
  • Patent number: 10925007
    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: November 1, 2019
    Date of Patent: February 16, 2021
    Assignee: Apple Inc.
    Inventors: Yakun Sun, Anatoliy S. Ioffe, Ehsan Haghani, Rohit U. Nabar