Patents by Inventor Tai Do

Tai Do 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: 20240414720
    Abstract: Systems and methods related to partial interlace frequency domain resource allocations for uplink transmissions from a wireless device are disclosed. In some embodiments, a method performed by a wireless device comprises receiving a resource allocation for an uplink transmission that allocates resources in one or more partially allocated interlaces and performing an uplink transmission on the allocated resources in the one or more partially allocated interlaces in accordance with the resource allocation. In this manner, a low-complexity approach to support flexible frequency domain resource allocation is provided. In addition, using this approach, an interlace may be shared by two or more wireless devices, which may increase spectral efficiency and reduce latency.
    Type: Application
    Filed: May 14, 2024
    Publication date: December 12, 2024
    Inventors: Tai Do, Joao Vieira, Stephen Grant
  • Patent number: 12167455
    Abstract: A wireless device (110) receives a frequency resource configuration (200) from an access node (120), the access node generates downlink control information DCI (201) and transmits a control message (202) including at least one slot format indicator, SFI, field and a frequency resource indicator field. Based on the frequency resource indicator, the wireless device determines whether a particular frequency resource is available for operation (203) and whether the wireless device can receive or transmit data on said frequency resource (204, 205).
    Type: Grant
    Filed: August 15, 2020
    Date of Patent: December 10, 2024
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Hazhir Shokri Razaghi, Min Wang, Reem Karaki, Stephen Grant, Iana Siomina, Tai Do, Yuhang Liu, Havish Koorapaty, Sorour Falahati, Jung-Fu Cheng
  • Patent number: 12108454
    Abstract: An example method is performed by a wireless device in a wireless communication network. The method comprises receiving, from a base station, a control message allocating resources in a bandwidth part for a downlink transmission, the bandwidth part including unlicensed spectrum and being divided into a plurality of bandwidth pieces corresponding to bandwidth units over which listen-before-talk (LBT) is performed. The radio resources used for the downlink transmissions exclude (e.g., by puncturing or rate-matching around) one or more guard bands of a bandwidth piece that is sensed as free for transmission.
    Type: Grant
    Filed: May 9, 2023
    Date of Patent: October 1, 2024
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Stephen Grant, Reem Karaki, Peter Alriksson, Tai Do, Jung-Fu Cheng, Havish Koorapaty
  • Patent number: 12096472
    Abstract: Methods and systems for dynamically adapting an Energy Detection (ED) threshold for use in an unlicensed network are provided. According to one aspect, a method for dynamically adapting ED threshold for use in an unlicensed network comprises determining an ED threshold based on a current state of an unlicensed network and using the determined ED threshold for channel sensing and/or signaling the ED threshold to another entity for use during channel sensing.
    Type: Grant
    Filed: September 30, 2019
    Date of Patent: September 17, 2024
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Tai Do, Peter Alriksson, Stephen Grant, Min Wang, Jan Christoffersson, Narendar Madhavan, Reem Karaki, Guido Roland Hiertz, Havish Koorapaty, Johan Rune
  • Patent number: 12075432
    Abstract: Systems and methods related to partial interlace frequency domain resource allocations for uplink transmissions from a wireless device are disclosed. In some embodiments, a method performed by a wireless device comprises receiving a resource allocation for an uplink transmission that allocates resources in one or more partially allocated interlaces and performing an uplink transmission on the allocated resources in the one or more partially allocated interlaces in accordance with the resource allocation. In this manner, a low-complexity approach to support flexible frequency domain resource allocation is provided. In addition, using this approach, an interlace may be shared by two or more wireless devices, which may increase spectral efficiency and reduce latency.
    Type: Grant
    Filed: January 7, 2020
    Date of Patent: August 27, 2024
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Tai Do, Joao Vieira, Stephen Grant
  • Patent number: 12069628
    Abstract: A method for use in a User Equipment configured to operate according to the New Radio (5G) standard, said method comprising: monitoring a control region for mini-slots for a transmission; detecting a start of the transmission; monitoring a control region of said transmission for regular slots; detecting that the transmission has ended; and in response thereto monitoring the control region for mini-slots again.
    Type: Grant
    Filed: September 12, 2023
    Date of Patent: August 20, 2024
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (publ)
    Inventors: Peter Alriksson, Tai Do, Reem Karaki, Gen Li, Amitav Mukherjee, Yu Yang
  • Patent number: 12022462
    Abstract: A method performed by a wireless device 410 is provided for receiving an uplink scheduling grant for a plurality of physical uplink shared channels (PUSCHs). The method includes receiving, from a network node 460, downlink control information (DCI). The DCI includes an indication corresponding to at least a time domain resource for each of the plurality of PUSCHs. Based on the indication, uplink scheduling grant resources are determined for the plurality of PUSCHs. At least one transmission is sent according to the determined uplink scheduling grant resources.
    Type: Grant
    Filed: August 2, 2019
    Date of Patent: June 25, 2024
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Reem Karaki, Jung-Fu Cheng, Tai Do, Stephen Grant
  • Patent number: 12010699
    Abstract: Systems and methods related to partial interlace frequency domain resource allocations for uplink transmissions from a wireless device are disclosed. In some embodiments, a method performed by a wireless device comprises receiving a resource allocation for an uplink transmission that allocates resources in one or more partially allocated interlaces and performing an uplink transmission on the allocated resources in the one or more partially allocated interlaces in accordance with the resource allocation. In this manner, a low-complexity approach to support flexible frequency domain resource allocation is provided. In addition, using this approach, an interlace may be shared by two or more wireless devices, which may increase spectral efficiency and reduce latency.
    Type: Grant
    Filed: January 7, 2020
    Date of Patent: June 11, 2024
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Tai Do, Joao Vieira, Stephen Grant
  • Publication number: 20240187867
    Abstract: A technique for performing a beamformed transmission on shared radio spectrum at a transmitting station (100) is described. As to a method aspect of the technique performed by a user equipment, UE (100), as the transmitting station (100), beamforming weights, for a beamformed reception (502) of a clear channel assessment, CCA (302), and the beamformed transmission (304), are determined based on a source channel (506) or a source signal (506). The CCA (302) is performed on the shared radio spectrum using an antenna array of the transmitting station (100), wherein the CCA (302) comprises the beamformed reception (502) on the shared radio spectrum at the UE (100) prior to the beamformed transmission (304). Depending on a result of the CCA, the beamformed transmission (304) on the shared radio spectrum is performed using the antenna array from the UE (100) to a receiving station (200; 800; 912; 1020; 1030).
    Type: Application
    Filed: April 6, 2022
    Publication date: June 6, 2024
    Inventors: Yuhang Liu, Tai Do, Peter Alriksson, Narendar Madhavan
  • Patent number: 11979199
    Abstract: A method is disclosed for a wireless transceiver comprising a plurality of transceiver antenna elements and configured to operate in a communication network. The method comprises dynamically assigning (from the plurality of transceiver antenna elements) a first set of transceiver antenna elements allocated for channel sensing and a second set of transceiver antenna elements allocated for communication, performing channel sensing using the first set of transceiver antenna elements, and operating the wireless transceiver based on a result of the performed channel sensing.
    Type: Grant
    Filed: May 29, 2019
    Date of Patent: May 7, 2024
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Joao Vieira, Narendar Madhavan, Leif Wilhelmsson, Tai Do
  • Publication number: 20240129903
    Abstract: A method for use in a User Equipment configured to operate according to the New Radio (5G) standard, said method comprising: monitoring a control region for mini-slots for a transmission; detecting a start of the transmission; monitoring a control region of said transmission for regular slots; detecting that the transmission has ended; and in response thereto monitoring the control region for mini-slots again.
    Type: Application
    Filed: September 12, 2023
    Publication date: April 18, 2024
    Inventors: Peter Alriksson, Tai Do, Reem Karaki, Gen LI, Amitav Mukherjee, Yu Yang
  • Publication number: 20240049282
    Abstract: Systems and methods for efficient use of unlicensed spectrum are disclosed. In some embodiments, a method performed by a transmitter comprises performing a Listen-Before-Talk (LBT) procedure for a channels within a transmit bandwidth of the transmit node, where the transmit bandwidth is divided into a bandwidth parts that correspond to the channels. The method further comprises transmitting a transmission in a subset of the bandwidth parts that correspond to a subset of the channels determined, based on a result of the LBT procedure, to be available. Transmitting the transmission comprises transmitting the transmission in accordance with a transmit scheme that uses carrier aggregation and/or carrier merging to transmit the transmission on the subset of the bandwidth parts and uses resources in one or more guard bands between two or more adjacent bandwidth parts from among the subset of the bandwidth parts.
    Type: Application
    Filed: October 16, 2023
    Publication date: February 8, 2024
    Inventors: Tai Do, Peter Alriksson, Thomas Nilsson
  • Patent number: 11838235
    Abstract: A method, wireless device, and network node for increasing the capacity on a control channel when using Frequency Division Multiplexing (FDM) of data and DMRS are disclosed. According to one aspect, a wireless device (WD) is configured to perform intra-symbol frequency division multiplexing of data subcarriers and demodulation reference signal, DMRS, subcarriers. The WD is also configured to apply intra-symbol orthogonal cover codes, OCCs, to the data subcarriers. The WD is further configured to apply intra-symbol cyclic shifts to the DMRS subcarriers.
    Type: Grant
    Filed: May 8, 2019
    Date of Patent: December 5, 2023
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Gustav Almquist, Tai Do, Stephen Grant
  • Patent number: 11792849
    Abstract: Systems and methods for efficient use of unlicensed spectrum are disclosed. In some embodiments, a method performed by a transmitter comprises performing a Listen-Before-Talk (LBT) procedure for a channels within a transmit bandwidth of the transmit node, where the transmit bandwidth is divided into a bandwidth parts that correspond to the channels. The method further comprises transmitting a transmission in a subset of the bandwidth parts that correspond to a subset of the channels determined, based on a result of the LBT procedure, to be available. Transmitting the transmission comprises transmitting the transmission in accordance with a transmit scheme that uses carrier aggregation and/or carrier merging to transmit the transmission on the subset of the bandwidth parts and uses resources in one or more guard bands between two or more adjacent bandwidth parts from among the subset of the bandwidth parts.
    Type: Grant
    Filed: February 4, 2021
    Date of Patent: October 17, 2023
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Tai Do, Peter Alriksson, Thomas Nilsson
  • Publication number: 20230327927
    Abstract: A method, system and apparatus are disclosed. According to one or more embodiments, a network node configured to communicate with a wireless device is provided. The network node includes processing circuitry configured to dynamically indicate a mixed numerology to the wireless device for implementation where the mixed numerology corresponds to a first numerology for a data channel and a second numerology for a control channel, the first numerology being different from the second numerology.
    Type: Application
    Filed: June 1, 2023
    Publication date: October 12, 2023
    Inventors: Jung-Fu CHENG, Yuhang LIU, Peter ALRIKSSON, Stephen GRANT, Tai DO
  • Publication number: 20230328775
    Abstract: Systems and methods for changing Listen Before Talk (LBT) for unlicensed networks are provided. In some embodiments, a method performed by a wireless device includes: receiving signaling from a base station that indicates when the wireless device uses LBT for transmissions; determining, based on the received signaling, whether or not to use LBT for transmissions; and transmitting based on the determination whether or not to use LBT for transmissions. Some embodiments provide a low complexity (in term of signaling overhead and specification impact) approach of adaptively using LBT mechanism by defining two simple modes for LBT operation (LBT and No LBT modes). Some embodiments reduce the probability of simultaneous transmissions that cause collisions, by using LBT mode, in environments and circumstances where network performance suffers from collision and/or interferences.
    Type: Application
    Filed: August 13, 2021
    Publication date: October 12, 2023
    Inventors: Tai Do, Peter Alriksson, Reem Karaki, Aliakbar Mirzaei, Havish Koorapaty, Yuhang Liu
  • Patent number: 11765704
    Abstract: A method for use in a User Equipment configured to operate according to the New Radio (5G) standard, said method comprising: monitoring a control region for mini-slots for a transmission; detecting a start of the transmission; monitoring a control region of said transmission for regular slots; detecting that the transmission has ended; and in response thereto monitoring the control region for mini-slots again.
    Type: Grant
    Filed: August 25, 2022
    Date of Patent: September 19, 2023
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (publ)
    Inventors: Peter Alriksson, Tai Do, Reem Karaki, Gen Li, Amitav Mukherjee, Yu Yang
  • Publication number: 20230276498
    Abstract: An example method is performed by a wireless device in a wireless communication network. The method comprises receiving, from a base station, a control message allocating resources in a bandwidth part for a downlink transmission, the bandwidth part including unlicensed spectrum and being divided into a plurality of bandwidth pieces corresponding to bandwidth units over which listen-before-talk (LBT) is performed. The radio resources used for the downlink transmissions exclude (e.g., by puncturing or rate-matching around) one or more guard bands of a bandwidth piece that is sensed as free for transmission.
    Type: Application
    Filed: May 9, 2023
    Publication date: August 31, 2023
    Inventors: Stephen Grant, Reem Karaki, Peter Alriksson, Tai Do, Jung-Fu Cheng, Havish Koorapaty
  • Patent number: 11716634
    Abstract: A network node is arranged to provide communication at least in an unlicensed band where clear channel assessment, CCA, is required before transmissions. The unlicensed band comprises a plurality of carriers, or sets of carriers, defining channels.
    Type: Grant
    Filed: July 7, 2022
    Date of Patent: August 1, 2023
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Peter Alriksson, Tai Do, Reem Karaki, Thomas Nilsson
  • Patent number: D1029404
    Type: Grant
    Filed: November 21, 2023
    Date of Patent: May 28, 2024
    Assignee: Cattasaurus LLC
    Inventor: Tai Do Anh Tran