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).

  • Patent number: 11546893
    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: Grant
    Filed: June 2, 2020
    Date of Patent: January 3, 2023
    Assignee: 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: 20220416972
    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: June 23, 2022
    Publication date: December 29, 2022
    Inventors: Yifan Li, Lakshmi R. Iyer, Joseph M. Murray, Allan Y. Tsai, Guodong Zhang, Qing Li
  • Patent number: 11533742
    Abstract: Non-Orthogonal Multiple Access (NOMA) transmissions are described herein in which sequence collision is mitigated or eliminated by exploiting the randomness nature of user specific reference bits and data bits. Further, methods, systems, and devices that use NOMA for small data transmissions are disclosed.
    Type: Grant
    Filed: May 10, 2019
    Date of Patent: December 20, 2022
    Assignee: IPLA Holdings Inc.
    Inventors: Allan Y. Tsai, Qing Li, Guodong Zhang, Yifan Li, Lakshmi R. Iyer, Pascal M. Adjakple, Mohamed Awadin, Joseph M. Murray
  • Publication number: 20220377790
    Abstract: A wireless device, such as user equipment (UE) or other apparatus, like may use a transparent mode operation in which the device is not aware of the operation mode of abase station, such as a gNB or other transmission and receive point (TRP), via the use of configurations for Frame Based Equipment (FBE) and Load Based Equipment (LBE) operating modes. A base station may initiate a Channel Occupancy Time (COT) that is an FBE COT or an LBE COT, in which the wireless device follows FBE or LBE procedures accordingly. A variety of criteria may be applied in determining whether to use FBE or LBE procedures, and to switch between them. A network may use indicate the intention to switch operation mode and may do so via implicit or explicit indications. Similarly, a wireless device may autonomously switch operation mode, and may indicate the selected mode to the network.
    Type: Application
    Filed: October 2, 2020
    Publication date: November 24, 2022
    Inventors: Mohamed AWADIN, Qing LI, Lakshmi R. IYER, Yifan LI, Allan Y. TSAI, Pascal M. ADJAKPLE, Patrick SVEDMAN, Guodong ZHANG
  • Patent number: 11510119
    Abstract: Measurement modeling and filtering may include configurable cell quality derivation method is used for multi-beam based NR networks; a common measurement model that considers different characteristics of the two measurement signals, NR synchronization signal and additional reference signal; and a multi-level measurement filtering approach that handles different mobility scenarios in an NR network. Measurement configuration and procedures may include a measurement gap design during which UE may use to perform measurements for beam sweeping based NR networks; a group of triggering events that may be used to trigger UE mobility management in an NR network; a content format that may be used for the transmission of UE measurement report; a measurement object design (the object on which a UE may perform the measurements) to reduce UE measurement overhead and cost; and a downlink measurement based inter-cell handover procedure that may be used in an NR network.
    Type: Grant
    Filed: May 20, 2021
    Date of Patent: November 22, 2022
    Assignee: IPLA HOLDINGS INC.
    Inventors: Wei Chen, Pascal M. Adjakple, Joseph M. Murray, Allan Y. Tsai, Lakshmi R. Iyer
  • Publication number: 20220369225
    Abstract: Methods, systems, and devices may enable UE power savings in multi-beam connectivity using multi-TRPs or multi-UE panels. Methods, systems, and devices may enable PDCCH skipping in the active duration of the UE by skipping PDCCH monitoring associated with groups of CORESETs.
    Type: Application
    Filed: October 2, 2020
    Publication date: November 17, 2022
    Inventors: Lakshmi R. IYER, Qing LI, Patrick SVEDMAN, Guodong ZHANG, Mohamed AWADIN, Yifan LI, Allan Y. TSAI, Pascal M. ADJAKPLE
  • Patent number: 11503495
    Abstract: Logical Channel Prioritization (LCP) may be enhanced by accounting for Quality of Service (QoS) attributes of single hop and multi-hop paths. QoS attributes may be communicated as a QoS budget comprising a number of attributes, or as a single composite QoS “resistance” factor that quantifies the compounded impact of number of hops, latency, load conditions, and the like. The QoS budget or resistance may dynamically adjusted, and may be used by LCP to provide differentiated uplink resource allocation to data of the bearer or logical channel subject to different transmission paths between the transmitter and the receiver, for example. QoS budget and resistance information may be used to, e.g., enhance Buffer Status Report (BSR) and Scheduling Request (SR) operations.
    Type: Grant
    Filed: June 20, 2019
    Date of Patent: November 15, 2022
    Assignee: IPLA HOLDINGS INC.
    Inventors: Pascal M. Adjakple, Stephen E. Terry, Qing Li, Joseph M. Murray, Lakshmi R. Iyer, Guodong Zhang, Mohamed Awadin, Yifan Li, Allan Y. Tsai
  • Publication number: 20220360950
    Abstract: Disclosed herein are methods and apparatus for HARQ feedback in NR Uu groupcast or broadcast, including methods for assigning and releasing the groupcast RNTI for Uu groupcast or broadcast, methods for enabling and disabling the HARQ feedback for Uu groupcast or broadcast, and methods for HARQ feedback and corresponding resource allocation for Uu groupcast or broadcast, including ACK-NACK based Uu groupcast HARQ feedback, NACK only based Uu groupcast HARQ feedback, and Enhanced ACK-NACK based Uu groupcast HARQ feedback. Also disclosed herein are methods for collision handling between HARQ feedback for Uu broadcast/groupcast and other transmissions.
    Type: Application
    Filed: October 2, 2020
    Publication date: November 10, 2022
    Applicant: IPLA Holdings Inc.
    Inventors: Yifan LI, Qing LI, Patrick SVEDMAN, Allan Y. TSAI, Mohamed AWADIN, Kyle PAN, Lakshmi R. IYER, Pascal M. ADJAKPLE, Guodong ZHANG
  • Publication number: 20220361180
    Abstract: The present application at least describes a frame structure in new radio. The frame structure includes a self-contained transmission time interval. The transmission time interval includes a control information region including plural beams. The interval also includes a downlink transmission channel region including plural beams. The frame structure is configured for downlink control information to be swept through the time interval. The frame structure is also configured for an uplink or downlink grant resource subsequently to be swept through the time interval. The present application is also directed to a method for configuring user equipment.
    Type: Application
    Filed: July 21, 2022
    Publication date: November 10, 2022
    Inventors: Lakshmi R. Iyer, Allan Y. Tsai, Tianyi Xu, Guodong Zhang, Pascal M. Adjakple, Ahmed ElSamadouny, Yifan Li
  • Publication number: 20220322325
    Abstract: An electronic device including a transceiver to communicate with a network; and circuitry. The circuitry is configured to perform beam failure detection on a monitored cell; detect a beam failure on the monitored cell; determine at least one new set of candidate beam reference signals (CB-RSs) from at least one set of CB-RS configured for the device; determine if any CB-RS in the at least one new set of CB-RSs meets a criterion, and in a case that any CB-RS in the at least one new set of CB-RSs meets the criterion: select a beam corresponding to a CB-RS in the new set that meets the criterion as the new beam, and indicate the selected new beam to the network; and in a case that no CB-RS in the new set of CB-RS meets a criterion, indicate to the network that no CB-RS in the new set meets the criterion.
    Type: Application
    Filed: June 25, 2020
    Publication date: October 6, 2022
    Inventors: Patrick SVEDMAN, Qing LI, Mohamed AWADIN, Yifan LI, Allan Y. TSAI, Gudon ZHANG, Lakshmi R. IYER
  • Publication number: 20220312484
    Abstract: A method may perform random access subject to Listen-Before-Talk (LBT) in an NR-U Serving Cell with multiple models. Enhancements may be to the Random Access Preamble Transmission procedure to enable autonomous BWP Switching or sub-band in the event the channel is busy for the active UL BWP.
    Type: Application
    Filed: June 16, 2022
    Publication date: September 29, 2022
    Applicant: IPLA HOLDINGS INC.
    Inventors: Joseph M. MURRAY, Pascal M. ADJAKPLE, Lakshmi R. IYER, Mohamed AWADIN, Allan Y. TSAI, Yifan LI, Guodong ZHANG
  • Publication number: 20220312395
    Abstract: Downlink Control Information (DCI) may be expanded, or enhanced, to allow nodes such as UEs, eNBs, NR-nodes, gNBs, and TRPs in M2M, IoT, WoT networks to coordinate activities on PHY, MAC, and RRC layers. For example, DCI fields may be added or enhanced to include, for example, information regarding time resource allocation, frequency resource allocation, mini-slot allocation, and or Code Block Group (CBG) transmission. Such information, or similar information, may be used in operations such as mini-slot operations, Code Block Group (CBG) transmission, group common Physical Downlink Control Channel (PDCCH), grant-free and grant-less operations, response to Beam Failure Recovery Request (BFRR), UL Transmit (TX) beam change, Quasi-Co-Location (QCL) operations, aperiodic CSI-RS transmission and interference measurement, Band Width Part (BWP) operations, and Multi-Transmission and Reception Point (TRP)/Multi-Panel.
    Type: Application
    Filed: June 6, 2022
    Publication date: September 29, 2022
    Applicant: IPLA HOLDINGS INC.
    Inventors: Qing LI, Guodong ZHANG, Yifan LI, Allan Y. TSAI, Lakshmi R. IYER
  • Publication number: 20220295589
    Abstract: Methods, systems, and devices may support BFD with multi-TRP transmission or support BFR with multi-TRP transmission, among other things. For BFD with multi-TRP transmission, there may be the explicit configuration or implicit configuration. With regard to BFR with multi-TRP transmission there may: BFR using contention-free PRACH, BFR using PUCCH, BFR using contention-free 2-step RACH, or BFR using PUSCH.
    Type: Application
    Filed: August 14, 2020
    Publication date: September 15, 2022
    Inventors: Allan Y. TSAI, Patrick SVEDMAN, Qing LI, Guodong ZHANG, Lakshmi R. IYER, Yifan LI, Mohamed AWADIN
  • Publication number: 20220287093
    Abstract: The present application at least describes a method for obtaining channel access in a network. The method includes a step of selecting, via a gNodeB, a spatial filter from a first set of spatial filters to perform listen before talk (LBT). The method includes a step of detecting, via the gNodeB, a channel in an idle state. The method also includes a step of obtaining, a directional channel occupancy time (COT) in the channel in a direction of the selected spatial filter. The method also includes a step of transmitting, to a node, a channel access indicator transmission (CAI-T) on a beam in the cot via a spatial filter of a second set of spatial filters. The method further includes a step of receiving, from the node, a channel access indicator response (CAI-R). The method further includes a step of sensing, via short channel sensing and via the spatial filter or another spatial filter of the second set of spatial filters, the channel is clear.
    Type: Application
    Filed: August 14, 2020
    Publication date: September 8, 2022
    Inventors: Lakshmi R. IYER, Qing LI, Mohamed AWADIN, Guodong ZHANG, Pascal M. ADJAKPLE, Yifan LI, Zhuo CHEN, Allan Y. TSAI
  • Publication number: 20220286184
    Abstract: A user equipment (UE) determines sidelink resources for use in vehicle wireless communications. Initial beam establishment uses a Sidelink Synchronization Signal (SLSS), a Sidelink Channel State Information Reference Signal (SL-CSI-RS), or a Sidelink Demodulation Reference Signal (SL-DMRS). Beam refinement may then be conducted either by UEs in communication with each other, or by just one of the UEs. A base station such as a gNB may assign resources for a dedicated sidelink carrier or a shared licensed sidelink carrier, e.g., dynamically, as pre-configured by RRC, or based on activation and deactivation. In such cases, initial beam establishment and refinement may include gNB controlled beam forming at a connectionless stage, gNB controlled beam forming at connection stage with scheduling DCI transmitted to Tx UE only, or gNB controlled beam forming at connection stage with scheduling DCI transmitted to both Tx UE and Rx UE.
    Type: Application
    Filed: August 12, 2020
    Publication date: September 8, 2022
    Inventors: Yifan LI, Qing LI, Guodong ZHANG, Allan Y. TSAI, Pascal M. ADJAKPLE, Lakshmi M. IYER, Mohamed AWADIN, Joseph M. MURRAY, Zhuo CHEN, Rocco DI GIROLAMO
  • Patent number: 11438905
    Abstract: The present application at least describes a frame structure in new radio. The frame structure includes a self-contained transmission time interval. The transmission time interval includes a control information region including plural beams. The interval also includes a downlink transmission channel region including plural beams. The frame structure is configured for downlink control information to be swept through the time interval. The frame structure is also configured for an uplink or downlink grant resource subsequently to be swept through the time interval. The present application is also directed to a method for configuring user equipment.
    Type: Grant
    Filed: December 23, 2020
    Date of Patent: September 6, 2022
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Lakshmi R. Iyer, Allan Y. Tsai, Tianyi Xu, Guodong Zhang, Pascal M. Adjakple, Ahmed ElSamadouny, Salman Khan, Yifan Li
  • Patent number: 11432328
    Abstract: A method may perform random access subject to Listen-Before-Talk (LBT) in an NR-U Serving Cell with multiple models. Enhancements may be to the Random Access Preamble Transmission procedure to enable autonomous BWP switching or sub-band in the event the channel is busy for the active UL BWP.
    Type: Grant
    Filed: April 4, 2019
    Date of Patent: August 30, 2022
    Assignee: IPLA HOLDINGS INC.
    Inventors: Joseph M. Murray, Pascal M. Adjakple, Lakshmi R. Iyer, Mohamed Awadin, Allan Y. Tsai, Yifan Li, Guodong Zhang
  • Publication number: 20220272760
    Abstract: A first apparatus in a wireless communication system, the first apparatus including circuitry configured to trigger a Random Access Channel (RACH) procedure; select a two-step RACH procedure from among a plurality of RACH procedures as a RACH type to be performed; select a MsgA transmission resource; transmit a MsgA; and monitor for a network response from a second apparatus.
    Type: Application
    Filed: August 4, 2020
    Publication date: August 25, 2022
    Inventors: Joseph M. MURRAY, Pascal M. ADJAKPLE, Lakshmi R. IYER, Mohamed AWADIN, Patrick SVEDMAN, Qing LI, Allan Y. TSAI, Yifan LI, Rocco DI GIROLAMO, Zhuo CHEN, Guodong ZHANG
  • Patent number: 11399365
    Abstract: Downlink Control Information (DCI) may be expanded, or enhanced, to allow nodes such as UEs, eNBs, NR-nodes, gNBs, and TRPs in M2M, IoT, WoT networks to coordinate activities on PHY, MAC, and RRC layers. For example, DCI fields may be added or enhanced to include, for example, information regarding time resource allocation, frequency resource allocation, mini-slot allocation, and or Code Block Group (CBG) transmission. Such information, or similar information, may be used in operations such as mini-slot operations, Code Block Group (CBG) transmission, group common Physical Downlink Control Channel (PDCCH), grant-free and grant-less operations, response to Beam Failure Recovery Request (BFRR), UL Transmit (TX) beam change, Quasi-Co-Location (QCL) operations, aperiodic CSI-RS transmission and interference measurement, Band Width Part (BWP) operations, and Multi-Transmission and Reception Point (TRP)/Multi-Panel.
    Type: Grant
    Filed: September 7, 2018
    Date of Patent: July 26, 2022
    Assignee: IPLA HOLDINGS INC.
    Inventors: Qing Li, Guodong Zhang, Yifan Li, Allan Y. Tsai, Lakshmi R. Iyer
  • Publication number: 20220231743
    Abstract: Embodiments contemplate methods, systems, and apparatuses for interference measurement in a wireless communication network, including wireless communication networks the employ MIMO in uplink and/or downlink communication. Embodiments contemplate identifying one or more interference measurement resource elements that may be received from one or more transmission points. Embodiments also contemplate performing interference measurement estimation based at least in part on the identified one or more interference measurement resource elements. Channel state information (CSI) perhaps in the form of reports may be generated based at least in part on the one or more interference measurement estimation. Embodiments also contemplate that the CSI report may be transmitted to one or more nodes. In some embodiments, the one or more interference measurement resource elements may be received as part of a set of resource elements.
    Type: Application
    Filed: April 7, 2022
    Publication date: July 21, 2022
    Inventors: Moon-il Lee, Paul Marinier, Shahrokh Nayeb Nazar, Allan Y. Tsai, Guodong Zhang, J. Patrick Tooher