Patents by Inventor Allan Y. Tsai

Allan Y. Tsai 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: 20210044339
    Abstract: The present application is at least directed to an apparatus on a network including a non-transitory memory including instructions stored thereon for beamforming training. The apparatus also includes a processor, operably coupled to the non-transitory memory, capable of executing the instructions of monitoring a first beamforming training reference signal (BT-RS) and physical broadcast channel (PBCH) of a network node to acquire symbol timing and subframe timing, where a common part of the PBCH includes a first beam ID. The processor is also configured to execute the instructions of transmitting, to the network node, a beam ID feedback with a unique training sequence generated based on the first beam ID to establish a radio resource control (RRC) connection The processor is further configured to execute the instructions of receiving, from the network node, a second BT-RS to perform beamforming training.
    Type: Application
    Filed: October 26, 2020
    Publication date: February 11, 2021
    Inventors: Guodong Zhang, Allan Y. Tsai, Qing Li, Pascal M. Adjakple, Lakshmi R. Iyer, Wei Chen, Joseph M. Murray
  • Publication number: 20210029694
    Abstract: Methods and systems for transmitting uplink control information and feedback are disclosed for carrier aggregation systems. A user equipment device may be configured to transmit uplink control information and other feedback for several downlink component carriers using one or more uplink component carriers. The user equipment device may be configured to transmit such data using a physical uplink control channel rather than a physical uplink shared channel. The user equipment device may be configured to determine the uplink control information and feedback data that is to be transmitted, the physical uplink control channel resources to be used to transmit the uplink control information and feedback data, and how the uplink control information and feedback data may be transmitted over the physical uplink control channel.
    Type: Application
    Filed: October 9, 2020
    Publication date: January 28, 2021
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Shahrokh Nayeb Nazar, Kyle Jung-Lin Pan, Robert L. Olesen, Ghyslain Pelletier, Marian Rudolf, Paul Marinier, Charles A. Dennean, Stephen G. Dick, Allan Y. Tsai, Christopher R. Cave, Chang-Soo Koo
  • Patent number: 10904869
    Abstract: Methods and systems for transmitting uplink control information and feedback are disclosed for carrier aggregation systems. A user equipment device may be configured to transmit uplink control information and other feedback for several downlink component carriers using one or more uplink component carriers. The user equipment device may be configured to transmit such data using a physical uplink control channel rather than a physical uplink shared channel. The user equipment device may be configured to determine the uplink control information and feedback data that is to be transmitted, the physical uplink control channel resources to be used to transmit the uplink control information and feedback data, and how the uplink control information and feedback data may be transmitted over the physical uplink control channel.
    Type: Grant
    Filed: June 6, 2019
    Date of Patent: January 26, 2021
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Shahrokh Nayeb Nazar, Kyle Jung-Lin Pan, Robert L. Olesen, Ghyslain Pelletier, Marian Rudolf, Paul Marinier, Charles A. Dennean, Stephen G. Dick, Allan Y. Tsai, Christopher R. Cave, Chang-Soo Koo
  • Publication number: 20200412498
    Abstract: It is recognized herein that current LTE reference signals may be inadequate for future cellular (e.g., New Radio) systems. Configurable reference signals are described herein. The configurable reference signals can support mixed numerologies and different reference signal (RS) functions. Further, reference signals can be configured so as to support beam sweeping and beamforming training.
    Type: Application
    Filed: September 14, 2020
    Publication date: December 31, 2020
    Inventors: Qian Zhang, Qing Li, Allan Y. Tsai, Guodong Zhang, Lakshmi R. Iyer, Tianyi Xu, Pascal M. Adjakple, Ahmed ElSamadouny, Salman Khan, Yifan Li
  • Patent number: 10880868
    Abstract: System information can include a basic set of system information and additional system information. A UE can receive the basic set of system information and then later request or receive the additional system information. Messages can use tags which can be used to look up locally stored system information. If a tag does not correspond to any locally stored system information, the system information and an associated tag can then be requested. Messages can be indicative of a cluster identity associated with cells. When the UE goes into a new cell, the cluster identity can be checked to see if system information from a prior call can be reused.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: December 29, 2020
    Assignee: Convida Wireless, LLC
    Inventors: Pascal M. Adjakple, Joseph M. Murray, Qing Li, Wei Chen, Allan Y. Tsai, Guodong Zhang
  • Publication number: 20200404617
    Abstract: A first apparatus detecting, from a second apparatus, one or more swept downlink beams, wherein each swept downlink beam comprises a synchronization signal block; making a measurement of a signal contained within the synchronization signal block of each detected swept downlink beam; decoding a message contained within the synchronization signal block of each detected swept downlink beam; selecting, based on the measurements and decoded message, a synchronization signal block; determine, based on the selected synchronization signal block, a paging block; detecting, within the paging block, a paging indication; and receiving, based on the paging indication, a paging message.
    Type: Application
    Filed: February 2, 2018
    Publication date: December 24, 2020
    Inventors: Joseph M. MURRAY, Pascal M. ADJAKPLE, Allan Y. TSAI, Qing LI, Lakshmi R. IYER, Wei CHEN, Guodong ZHANG, Yifan LI, Mohamed AWADIN
  • Patent number: 10868653
    Abstract: Flexibly configured containers consisting of resources within time-frequency blocks may be used to support multiple numerologies in new radio architectures. Uplink control may be defined in resources within a container, or in dedicated resources, by various nodes. Sounding reference signal resources may be dynamically configured for each numerology. The sequence length may be adapted, as well as the time domain location of symbols. Time, frequency, and orthogonal resources may be allocated via a downlink control channel or a radio resource control. Sounding reference signals may be pre-coded, and pre-coding weights may be based on a codebook or non-codebook approaches, e.g., via a radio resource control or a downlink RRC or DL control channel. Pre-coded sounding reference signals may be adapted to user equipment antenna configuration. Further, NR-SRS may be used as UL demodulation RS (DM-RS).
    Type: Grant
    Filed: June 7, 2019
    Date of Patent: December 15, 2020
    Assignee: Convida Wireless, LLC
    Inventors: Lakshmi R. Iyer, Guodong Zhang, Qian Zhang, Allan Y. Tsai, Joseph M. Murray, Pascal M. Adjakple, Qing Li, Tianyi Xu, Wei Chen, Ahmed ElSamadouny, Salman Khan, Yifan Li
  • Patent number: 10849166
    Abstract: The present application is at leasted directed to an apparatus including a non-transitory memory including instructions to perform random access in a beam sweeping network having a cell. The network includes a downlink sweeping subframe, an uplink sweeping subframe and a regular sweeping subframe. The apparatus also includes a processor operably coupled to the non-transitory memory. The processor is configured to execute the instructions of selecting an optimal downlink transmission beam transmitted by the cell during the downlink sweeping subframe. The processor is also configured to execute the instructions of determining an optimal downlink reception beam from the optimal downlink transmission beam. The processor is further configured to execute the instructions of determining a random access preamble and a physical random access channel (PRACH) resource via resource selection from the optimal downlink transmission beam.
    Type: Grant
    Filed: March 4, 2020
    Date of Patent: November 24, 2020
    Assignee: Convida Wireless, LLC
    Inventors: Joseph M. Murray, Pascal M. Adjakple, Wei Chen, Lakshmi R. Iyer, Qian (Emily) Zhang, Allan Y. Tsai, Guodong Zhang, Qing Li
  • Patent number: 10840982
    Abstract: The present application is at least directed to an apparatus on a network including a non-transitory memory including instructions stored thereon for beamforming training during an interval in the network. The apparatus also includes a processor, operably coupled to the non-transitory memory, capable of executing the instructions of receiving, from a new radio node, a beamforming training signal and beam identification for each of plural beams during the interval. The processor is also configured to execute the instructions of determining an optimal transmission beam of the new radio node based on the beamforming training signals of the plural beams. The processor is further configured to execute the instructions of transmitting, to the new radio node, a signal including a beam identification of the optimal transmission beam and an identification of the apparatus during the interval.
    Type: Grant
    Filed: August 11, 2017
    Date of Patent: November 17, 2020
    Assignee: Convidia Wireless, LLC
    Inventors: Guodong Zhang, Allan Y. Tsai, Qing Li, Pascal M. Adjakple, Lakshmi R. Iyer, Wei Chen, Joseph M. Murray
  • Patent number: 10812238
    Abstract: It is recognized herein that current LTE reference signals may be inadequate for future cellular (e.g., New Radio) systems. Configurable reference signals are described herein. The configurable reference signals can support mixed numerologies and different reference signal (RS) functions. Further, reference signals can be configured so as to support beam sweeping and beamforming training.
    Type: Grant
    Filed: April 20, 2017
    Date of Patent: October 20, 2020
    Assignee: Convida Wireless, LLC
    Inventors: Qian Zhang, Qing Li, Allan Y. Tsai, Guodong Zhang, Lakshmi R. Iyer, Tianyi Xu, Pascal M. Adjakple, Ahmed Elsamadouny, Salman Khan, Yifan Li
  • Patent number: 10804989
    Abstract: Multiple mobility sets are maintained for nodes of radio networks. The sets comprise information such as: transmit and receive point identities; cell identities; beam identities; frequency channels; channel bandwidth; and black lists. The sets may be defined at different levels, such as network and physical (PHY) level. A network mobility set, e.g., a new-radio (NR) mobility set may, be determined by the gNB, the cell, the UE, or another device. Multiple radio access network nodes and UEs may exchange mobility set information to achieve a distributed mobility solution. A UE may monitor its orientation relative to a TRP, e.g., via use of an onboard MEMS gyroscope, and alter its beamforming parameters in response to changes in orientation and/or changes in TRP connection strength. Cell selection and reselection for beam based networks may use Single Frequency Network (SFN) broadcast of initial access signals without beam sweeping.
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: October 13, 2020
    Assignee: Convida Wireless, LLC
    Inventors: Wei Chen, Pascal M. Adjakple, Joseph M. Murray, Qing Li, Qian Zhang, Lakshmi R. Iyer, Tianyi Xu, Guodong Zhang, Allan Y. Tsai
  • Publication number: 20200322816
    Abstract: It is recognized herein that as the number of transmit antennas in cellular systems (e.g., NR or 5G systems) increase, the Channel State information (CSI) feedback overhead may increase to unacceptable levels, and the current CSI feedback might not support beamforming training for NR. Embodiments described herein provide an enhanced and more efficient design for Channel State Information feedback as compared to current approaches.
    Type: Application
    Filed: June 24, 2020
    Publication date: October 8, 2020
    Inventors: Tianyi Xu, Qian Zhang, Allan Y. Tsai, Guodong Zhang, Lakshmi R. Iyer, Qing Li
  • Patent number: 10791531
    Abstract: The present application is directed to an apparatus for wireless communication. The apparatus includes a non-transitory memory including instructions stored thereon for performing the wireless communication. The apparatus also includes a processor, operably coupled to the non-transitory memory, capable of executing an instruction of receiving a beam sweeping block carrying downlink initial access signals including a first synchronization signal, a second synchronization signal, a beam reference signal and a PBCH monitoring transmission of a downlink sweeping subframe. The processor is capable of also executing the instruction of determining, based on the downlink initial access signals, an identity of the beam sweeping block associated with the downlink initial access signal. A part of the identity of the beam sweeping block is associated with the beam reference signal. The present application is also directed to a method for performing wireless communication.
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: September 29, 2020
    Assignee: Convida Wireless, LLC
    Inventors: Allan Y. Tsai, Lakshmi R. Iyer, Guodong Zhang, Joseph M. Murray, Qing Li, Wei Chen, Pascal M. Adjakple, Tianyi Xu
  • Publication number: 20200296720
    Abstract: A method and apparatus for transmitting uplink control information (UCI) for Long Term Evolution-Advanced (LTE-A) using carrier aggregation is disclosed. Methods for UCI transmission in the uplink control channel, uplink shared channel or uplink data channel are disclosed. The methods include transmitting channel quality indicators (CQI), precoding matrix indicators (PMI), rank indicators (RI), hybrid automatic repeat request (HARQ) acknowledgement/non-acknowledgement (ACK/NACK), channel status reports (CQI/PMI/RI), source routing (SR) and sounding reference signals (SRS). In addition, methods for providing flexible configuration in signaling UCI, efficient resource utilization, and support for high volume UCI overhead in LTE-A are disclosed.
    Type: Application
    Filed: June 2, 2020
    Publication date: September 17, 2020
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Erdem Bala, Philip J. Pietraski, Sung-Hyuk Shin, Guodong Zhang, Allan Y. Tsai, Joseph S. Levy, Pascal M. Adjakple, John W. Haim, Robert L. Olesen, Kyle Jung-Lin Pan
  • Publication number: 20200288412
    Abstract: A number of power headroom solutions are disclosed, including but not limited to signaling of a bandwidth part (BWP) specific maximum outpower by a gNB to a UE, signaling of a beam specific maximum output power by the gNB to the UE, signaling by the UE to the gNB of the UE setting of BWP configured maximum transmit output power, signaling by the UE to the gNB of the UE setting of beam or group of beam configured maximum transmit output power, signaling by the UE to the gNB of BWP specific power headroom report, signaling by the UE to the gNB of beam or group of beam specific power headroom report and rules for power headroom reporting when the UE has overlapping resource grants.
    Type: Application
    Filed: November 15, 2018
    Publication date: September 10, 2020
    Inventors: Pascal M. AJDAKPLE, Qing LI, Guodong ZHANG, Stephen E. TERRY, Allan Y. TSAI
  • Publication number: 20200287678
    Abstract: In NR, a slot structure of a UE may be dynamic due the number of symbols of PDCCH and whether the slot has UL data, among other considerations. Additionally, to support multi-TRP/multi-panel/multi-BWP operation, a UE may be configured with multiple TRSs, and when a UE needs to receive multiple TRSs in the same slot, efficient signaling of the TRSs is important because of the high overhead involved. During a transmission, a UE may need to do beam switching when there is a beam failure, but existing systems do not have mechanisms for the UE to synchronize time and frequency with a new beam. Further, when a UE switches to a new beam, the effect on scheduled TRS transmission for old beams is unclear. Fine frequency and time tracking may also be required during an initial access procedure. Existing NR systems do not address how a UE may perform time and frequency tracking during an initial access procedure. Additionally, URLLC data may need to be transmitted to a UE immediately in an NR system.
    Type: Application
    Filed: September 28, 2018
    Publication date: September 10, 2020
    Inventors: Yifan LI, Lakshmi R. IYER, Joseph M. MURRAY, Allan Y. TSAI, Guodong ZHANG, Qing LI
  • Publication number: 20200267696
    Abstract: Methods and systems are disclosed for resource allocation for Grant-free Uplink (UL) transmissions, such as resource allocation via RRC signaling and Resource allocation via LI signaling, and for procedures associated with Grant-free UL transmission, such as for Grant-free operations with RRC signaling and Grant-free operations with PHY signaling.
    Type: Application
    Filed: August 9, 2018
    Publication date: August 20, 2020
    Inventors: Qing LI, Lakshmi R. IYER, Allan Y. TSAI, Guodong ZHANG
  • Publication number: 20200259588
    Abstract: PBCH design may affect timing indication in a wireless network and polar code interleaver design, among other things. Mechanisms may indicate half frame timing though de-modulation reference signal sequence initialization, de-modulation reference signal mapping order, or de-modulation reference signal resource element location. The payload of the PBCH comprises a master information block (MIB), which payload is scrambled and encoded using a polar code. After rate matching and interleaving of the polar codeword, second scrambling is applied and the data is modulated.
    Type: Application
    Filed: August 8, 2018
    Publication date: August 13, 2020
    Inventors: Lakshmi R. IYER, Allan Y. TSAI, Qing LI, Joseph M. MURRAY
  • Publication number: 20200252976
    Abstract: The present application is at leasted directed to an apparatus including a non-transitory memory including instructions to perform random access in a beam sweeping network having a cell. The network includes a downlink sweeping subframe, an uplink sweeping subframe and a regular sweeping subframe. The apparatus also includes a processor operably coupled to the non-transitory memory. The processor is configured to execute the instructions of selecting an optimal downlink transmission beam transmitted by the cell during the downlink sweeping subframe. The processor is also configured to execute the instructions of determining an optimal downlink reception beam from the optimal downlink transmission beam. The processor is further configured to execute the instructions of determining a random access preamble and a physical random access channel (PRACH) resource via resource selection from the optimal downlink transmission beam.
    Type: Application
    Filed: March 4, 2020
    Publication date: August 6, 2020
    Inventors: Joseph M. Murray, Pascal M. Adjakple, Wei CHEN, Lakshmi R. Iyer, Qian (Emily) Zhang, Allan Y. Tsai, Guodong Zhang, Qing Li
  • Patent number: 10735980
    Abstract: It is recognized herein that as the number of transmit antennas in cellular systems (e.g., NR or 5G systems) increase, the Channel State information (CSI) feedback overhead may increase to unacceptable levels, and the current CSI feedback might not support beamforming training for NR. Embodiments described herein provide an enhanced and more efficient design for Channel State Information feedback as compared to current approaches.
    Type: Grant
    Filed: August 11, 2017
    Date of Patent: August 4, 2020
    Assignee: Convida Wireless, LLC
    Inventors: Tianyi Xu, Qian Zhang, Allan Y. Tsai, Guodong Zhang, Lakshmi R. Iyer, Qing Li