Patents by Inventor Kelvin Kar-Kin Au

Kelvin Kar-Kin Au 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: 11438114
    Abstract: Different filtered-orthogonal frequency division multiplexing (f-OFDM) frame formats may be used to achieve the spectrum flexibility. F-OFDM waveforms are generated by applying a pulse shaping digital filter to an orthogonal frequency division multiplexed (OFDM) signal. Different frame formats may be used to carry different traffic types as well as to adapt to characteristics of the channel, transmitter, receiver, or serving cell. The different frame formats may utilize different sub-carrier (SC) spacings and/or cyclic prefix (CP) lengths. In some embodiments, the different frame formats also utilize different symbol durations and/or transmission time interval (TTI) lengths.
    Type: Grant
    Filed: July 17, 2020
    Date of Patent: September 6, 2022
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Kelvin Kar Kin Au, Jianglei Ma, Liqing Zhang
  • Patent number: 11388778
    Abstract: This application provides a time configuration method, a network device, and a terminal. A sending time of a reference signal is determined according to an on duration period, or an on duration period is determined according to a sending time of a reference signal, so that the sending time of the reference signal is associated with the on duration period.
    Type: Grant
    Filed: February 7, 2020
    Date of Patent: July 12, 2022
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Jun Luo, Keyvan Zarifi, Kelvin Kar Kin Au, Zhengzheng Xiang, Jin Liu
  • Publication number: 20220183083
    Abstract: A system and method includes implementing, by a base station (BS), a reliable ultra-low latency transmission mechanism in a grant-free uplink transmission scheme having defined therein contention transmission unit (CTU) access regions and a plurality of CTUs. Implementing the reliable ultra-low latency transmission mechanism includes defining a reliable ultra-low latency CTU (RULL-CTU) access region from a portion of the CTU access regions of the grant-free transmission scheme, defining an RULL-CTU mapping scheme by mapping at least a portion of plurality of CTUs to the RULL-CTU access region to define a plurality of RULL-CTUs, defining a reliable ultra-low latency user equipment (RULL-UE) mapping scheme by defining rules for mapping a plurality of RULL-UEs to the plurality of RULL-CTUs in an initial pattern for initial transmissions in a first transmission time interval (TTI), and a regrouped pattern for redundant transmissions in a second TTI subsequent to the first TTI.
    Type: Application
    Filed: February 23, 2022
    Publication date: June 9, 2022
    Inventors: Kelvin Kar Kin AU, Liqing ZHANG, Jianglei MA
  • Publication number: 20220174606
    Abstract: A method for operating a user equipment (UE) includes determining a first operating state in accordance with a first message traffic generated by a non-session based application executing in the UE, setting a state machine in the UE to the first operating state, and transmitting a first message in accordance with the state machine.
    Type: Application
    Filed: February 18, 2022
    Publication date: June 2, 2022
    Inventors: Kelvin Kar Kin Au, Liqing Zhang, Jianglei Ma
  • Publication number: 20220150843
    Abstract: A method for power control for uplink transmission is provided. In an embodiment, a method in a user equipment (UE) for reference signal (RS) relationship specific uplink (UL) transmission power control includes transmitting, by the UE, a first UL signal according to a first power control set including at least one of a first target power, a second target power, a DL reference signal (RS) for pathloss estimation, a pathloss compensation factor, and a transmit power command (TPC). The first power control set is determined according to a first RS relationship between one first RS and a first UL signal.
    Type: Application
    Filed: January 24, 2022
    Publication date: May 12, 2022
    Inventors: Zhengwei Gong, Amine Maaref, Kelvin Kar Kin Au, Mohammadhadi Baligh, Weimin Xiao
  • Publication number: 20220109593
    Abstract: For a wireless communications system, scalable orthogonal frequency division multiplexing (OFDM) numerology is incorporated in a manner that can apply to radio link transmissions in future wireless network for frequency division duplex (FDD) and time division duplex (TDD) communications.
    Type: Application
    Filed: August 24, 2021
    Publication date: April 7, 2022
    Inventors: Liqing ZHANG, Kelvin Kar Kin AU, Jianglei MA, Wen TONG, Toufiqul ISLAM
  • Patent number: 11284450
    Abstract: A system and method includes implementing, by a base station (BS), a reliable ultra-low latency transmission mechanism in a grant-free uplink transmission scheme having defined therein contention transmission unit (CTU) access regions and a plurality of CTUs. Implementing the reliable ultra-low latency transmission mechanism includes defining a reliable ultra-low latency CTU (RULL-CTU) access region from a portion of the CTU access regions of the grant-free transmission scheme, defining an RULL-CTU mapping scheme by mapping at least a portion of plurality of CTUs to the RULL-CTU access region to define a plurality of RULL-CTUs, defining a reliable ultra-low latency user equipment (RULL-UE) mapping scheme by defining rules for mapping a plurality of RULL-UEs to the plurality of RULL-CTUs in an initial pattern for initial transmissions in a first transmission time interval (TTI), and a regrouped pattern for redundant transmissions in a second TTI subsequent to the first TTI.
    Type: Grant
    Filed: June 22, 2020
    Date of Patent: March 22, 2022
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Kelvin Kar Kin Au, Liqing Zhang, Jianglei Ma
  • Patent number: 11259246
    Abstract: A method for operating a user equipment (UE) includes determining a first operating state in accordance with a first message traffic generated by a non-session based application executing in the UE, setting a state machine in the UE to the first operating state, and transmitting a first message in accordance with the state machine.
    Type: Grant
    Filed: October 5, 2018
    Date of Patent: February 22, 2022
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Kelvin Kar Kin Au, Liqing Zhang, Jianglei Ma
  • Patent number: 11252717
    Abstract: Some user equipments (UEs) served by a base station may need to receive data from the base station and/or transmit data to the base station with lower latency than other UEs. It is desired to accommodate the presence of both low latency and latency tolerant communications in shared time-frequency resources to try to improve resource utilization. Embodiments are disclosed in which low latency and latency tolerant communications coexist in the same time-frequency resources. In some embodiments, a latency tolerant transmission is postponed to free resources to send a low latency transmission.
    Type: Grant
    Filed: August 30, 2017
    Date of Patent: February 15, 2022
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Toufiqul Islam, Jianglei Ma, Kelvin Kar Kin Au, Jiayin Zhang, Mohamed Adel Salem
  • Patent number: 11240761
    Abstract: A method for power control for uplink transmission is provided. In an embodiment, a method in a user equipment (UE) for reference signal (RS) relationship specific uplink (UL) transmission power control includes transmitting, by the UE, a first UL signal according to a first power control set including at least one of a first target power, a second target power, a DL reference signal (RS) for pathloss estimation, a pathloss compensation factor, and a transmit power command (TPC). The first power control set is determined according to a first RS relationship between one first RS and a first UL signal.
    Type: Grant
    Filed: October 24, 2019
    Date of Patent: February 1, 2022
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Zhengwei Gong, Amine Maaref, Kelvin Kar Kin Au, Mohammadhadi Baligh, Weimin Xiao
  • Patent number: 11212712
    Abstract: A network for facilitating wireless radio communication. The network includes a first access area, wherein the access area includes one or more transmission/receive points. At least one transmission/receive point includes a base station that supports wireless communication between a network and user equipment (UE), such as, a mobile device. The network includes a dedicated connection signature (DCS) that is assigned to a UE. The DCS provides for and is used by the UE to maintain active, unified access to the wireless network. More particularly, the DCS provides for active, contention free, and fast access for the UE to the network through transmission/receive points within the first access area, which is of significance to present and future UE centric virtual radio access networks having high densities of mobile and non-mobile users and with high populations of different types of traffic patterns and applications.
    Type: Grant
    Filed: February 4, 2019
    Date of Patent: December 28, 2021
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Liqing Zhang, Jianglei Ma, Kelvin Kar Kin Au, Zhihang Yi
  • Patent number: 11184165
    Abstract: A method for user equipment (UE) identification in a wireless network comprising selecting, at the UE, a sequence from a stored pool of possible sequences based on a stored secret value; and transmitting the selected sequence to the wireless network.
    Type: Grant
    Filed: July 22, 2019
    Date of Patent: November 23, 2021
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Mohammadhadi Baligh, Kelvin Kar Kin Au, Jianglei Ma
  • Patent number: 11184790
    Abstract: This application discloses a communications method and apparatus, the method including sending a synchronization/broadcast signal block of a serving cell or a camping cell, sending at least one piece of cell measurement configuration information to a terminal device, where the at least one piece of cell measurement configuration information comprises N pieces of information indicating actual sending of a synchronization/broadcast signal block, and the N pieces of information indicating actual sending of a synchronization/broadcast signal block are used to indicate information about actually sent synchronization/broadcast signal blocks of M cells, where 1?N?M, where M is a quantity of measurement cells of the terminal device, and where both N and M are positive integers, and sending synchronization/broadcast signal blocks of the M measurement cells.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: November 23, 2021
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Jin Liu, Pu Yuan, Keyvan Zarifi, Jun Luo, Kelvin Kar Kin Au
  • Publication number: 20210345086
    Abstract: Provisioning and communicating physical signals and channels in NR networks having a first subset of transmit and receive points that use a first cell ID and a second subset of transmit and receive points that use a second cell ID. Operations include transmitting from, and receiving from, a first transmit and receive point a first signal or channel wherein the first signal or channel is based on a first user equipment (UE) specific parameter assigned via the first subset of transmit and receive points and transmitting from, and receiving from, the first transmit and receive point the plurality of transmit and receive points a second signal or channel wherein the second signal or channel is based on a second UE specific parameter assigned via the second subset of transmit and receive points. A transmit and receive point and a UE for implementing the operations are also disclosed.
    Type: Application
    Filed: July 9, 2021
    Publication date: November 4, 2021
    Inventors: Amine Maaref, Kelvin Kar Kin Au, Jianglei Ma
  • Publication number: 20210314119
    Abstract: A method and system for operating a user equipment (UE) wherein a first set of radio access procedures are supported when the UE is in a first operating state, and a second set of radio access procedures are supported when the UE is in a second operating state.
    Type: Application
    Filed: June 17, 2021
    Publication date: October 7, 2021
    Inventors: Kelvin Kar Kin AU, Liqing ZHANG, Mohammadhadi BALIGH, Jianglei MA, Wen TONG
  • Patent number: 11122562
    Abstract: In one embodiment, a method for adaptive transmission time intervals (TTIs) includes transmitting, by a communications controller to a user equipment (UE), a segment of a first TDD TTI configuration of a first TDD interval and a second TDD TTI configuration of the first TDD interval, where the first TDD TTI configuration has a first pattern, where the second TDD TTI configuration has a second pattern, where the first pattern is different than the second pattern, where the first TDD TTI configuration has a first uplink TTI segment and a first downlink TTI segment. The method also includes transmitting a first plurality of data on a first TTI in the first downlink TTI segment of the first TDD TTI configurations of the first TDD interval and receiving a second plurality of data on the first uplink segment of the first TDD TTI configuration of the first TDD interval.
    Type: Grant
    Filed: June 5, 2018
    Date of Patent: September 14, 2021
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Kelvin Kar Kin Au, Liqing Zhang, Jianglei Ma, Keyvan Zarifi
  • Publication number: 20210266937
    Abstract: A method embodiment includes implementing, by a base station (BS), a grant-free uplink transmission scheme. The grant-free uplink transmission scheme defines a first contention transmission unit (CTU) access region in a time-frequency domain, defines a plurality of CTUs, defines a default CTU mapping scheme by mapping at least some of the plurality of CTUs to the first CTU access region, and defines a default user equipment (UE) mapping scheme by defining rules for mapping a plurality of UEs to the plurality of CTUs.
    Type: Application
    Filed: May 13, 2021
    Publication date: August 26, 2021
    Inventors: Kelvin Kar Kin Au, Hosein Nikopour, Petar Djukic, Zhihang Yi, Alireza Bayesteh, Jianglei Ma, Mohammadhadi Baligh, Liqing Zhang
  • Patent number: 11102039
    Abstract: For a wireless communications system, scalable orthogonal frequency division multiplexing (OFDM) numerology is incorporated in a manner that can apply to radio link transmissions in future wireless network for frequency division duplex (FDD) and time division duplex (TDD) communications.
    Type: Grant
    Filed: June 8, 2020
    Date of Patent: August 24, 2021
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Liqing Zhang, Kelvin Kar Kin Au, Jianglei Ma, Wen Tong, Toufiqul Islam
  • Patent number: 11102775
    Abstract: Systems and methods for transmitting and receiving resource blocks using OFDM-based signals are provided. The OFDM-based signal has a number of sub-bands, and employs a respective numerology in each sub-band. Each numerology has a respective subcarrier spacing and OFDM symbol duration. For a given receiver, content is mapped to resource blocks within an assigned one of the sub-bands, using the sub-carrier spacing of the sub-band.
    Type: Grant
    Filed: November 26, 2015
    Date of Patent: August 24, 2021
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Toufiqul Islam, Kelvin Kar Kin Au, Jianglei Ma, Liqing Zhang
  • Publication number: 20210234658
    Abstract: A method of configuring a pilot signal includes defining a first pilot signal arrangement and defining a second pilot signal arrangement. Also, the method includes determining, by a communications controller, a first determined pilot signal arrangement in accordance with the first defined pilot signal arrangement, the second defined pilot signal arrangement, and a set of characteristics and transmitting, by the communications controller, the pilot signal having the first determined pilot signal arrangement.
    Type: Application
    Filed: April 16, 2021
    Publication date: July 29, 2021
    Inventors: Zhihang Yi, Jianglei Ma, Liqing Zhang, Kelvin Kar Kin Au