Patents by Inventor Lung-Sheng Tsai

Lung-Sheng 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: 11558762
    Abstract: In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be a UE. The UE receives a first trigger. The UE determines, based on the first trigger, whether it is possible that a first transmission and reception point (TRP) and a second TRP are to transmit a first down link control channel and a second down link control channel to the UE concurrently on a carrier. The UE monitors the first down link control channel and the second down link control channel in a particular slot when it is possible that the first TRP and the second TRP are to transmit the first down link control channel and the second down link control channel to the UE concurrently on the carrier.
    Type: Grant
    Filed: March 31, 2020
    Date of Patent: January 17, 2023
    Assignee: MEDIATEK INC.
    Inventor: Lung-Sheng Tsai
  • Publication number: 20220417868
    Abstract: In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be a wireless device. The wireless device receives a configuration for transmitting reference signals. The wireless device receives radio frequency (RF) signals transmitted between a base station and a user equipment (UE). The wireless device amplifies the RF signals to generate amplified RF signals. The wireless device forwards the amplified RF signals. The wireless device transmits the reference signals in accordance with the configuration.
    Type: Application
    Filed: June 1, 2022
    Publication date: December 29, 2022
    Inventor: Lung-Sheng Tsai
  • Publication number: 20220393841
    Abstract: In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be a UE. The UE receives Nr1 RF signals at Nr1 antennas on a first time-frequency resource. The Nr1 RF signals carrying L layers of data generated at a base station. Nr1 and L are positive integers. L is greater than Nr1. The UE receives Nr2 RF signals at the Nr2 antennas on a second time-frequency resource. The Nr2 RF signals carries the L layers of data. Nr2 is a positive integer. The UE obtains Nr1 baseband signals from the Nr1 RF signals. The UE obtains Nr2 baseband signals from the Nr2 RF signals. The UE determines the L layers of data based on the Nr1 baseband signals and the Nr2 baseband signals.
    Type: Application
    Filed: May 13, 2022
    Publication date: December 8, 2022
    Inventors: Lung-Sheng Tsai, Pei-Kai Liao
  • Publication number: 20220368379
    Abstract: In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be a UE. The UE measures, at a first time point, a first set of reference signals to determine a first set of values corresponding to a set of CSI parameters. The UE determines value differences between the first set of values and a set of reference values corresponding to the set of CSI parameters. The UE sends a first CSI report including variation indicators indicating the value differences.
    Type: Application
    Filed: April 13, 2022
    Publication date: November 17, 2022
    Inventor: Lung-Sheng Tsai
  • Publication number: 20220360393
    Abstract: In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be a UE. The UE measures a first set of reference signals to determine a first channel state of a first channel between a first TRP and the UE. The UE measures interference received at the UE. The UE sends a first CSI report generated corresponding to the first channel state. The UE sends a second CSI report generated corresponding to the interference.
    Type: Application
    Filed: April 13, 2022
    Publication date: November 10, 2022
    Inventor: Lung-Sheng Tsai
  • Publication number: 20220232409
    Abstract: Various examples and schemes pertaining to resource allocation enhancements for sidelink (SL) communications are described. A user equipment (UE) receives from a peer UE a sidelink control information (SCI) signal indicating a reserved resource. The UE then determines whether the reserved resource is acceptable by performing a reference signal received power (RSRP)-based comparison. Depending on a result of the determining, the UE performs a transmission to either the peer UE or one or more other UEs.
    Type: Application
    Filed: January 18, 2022
    Publication date: July 21, 2022
    Inventors: Tao Chen, Lung-Sheng Tsai
  • Publication number: 20220217683
    Abstract: A UE determines N1 component carriers on each of which the UE is configured to detect a respective one PDCCH in a slot. The UE determines N2 component carriers on each of which the UE is configured to detect respective at least two PDCCHs in the slot. The UE determines a total Q blind detections of PDCCH that the UE is capable of performing. The UE determines a first predetermined scaling factor X. The UE allocates M1 blind detections of the Q blind detections to be available on each of the N1 component carriers and M2 blind detections of the Q blind detections to be available on each of the N2 component carriers such that (N1*M1+N2*M2) is a largest integer no greater than Q. M2 equals to X*M1. The UE performs blind detections in accordance with the allocations.
    Type: Application
    Filed: March 24, 2022
    Publication date: July 7, 2022
    Inventors: Lung-Sheng Tsai, Chien-Hwa Hwang, Yi-Ju Liao
  • Patent number: 11356162
    Abstract: In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be a UE. The UE determines to report CSI reports. The UE determines that a first CSI report and a second CSI report to be reported contain same CSI information. The UE determines that total processing units required for updating the first CSI report and the second CSI report to be processing units required for updating one of the first CSI report and the second CSI report. The UE updates the first CSI report and the second CSI report based on a same CSI calculation.
    Type: Grant
    Filed: May 21, 2020
    Date of Patent: June 7, 2022
    Assignee: MEDIATEK INC.
    Inventor: Lung-Sheng Tsai
  • Publication number: 20220141716
    Abstract: Various examples and schemes pertaining to sidelink (SL) resource allocation enhancements in New Radio (NR) vehicle-to-everything (V2X) communications are described. A user equipment (UE) receives a first sidelink control information (SCI) carrying first assistance information indicating one or more reserved resources. The UE determines a disposition with respect to the first assistance information. In response to the disposition with respect to the first assistance information, the UE transmits a second SCI carrying second assistance information related to the first assistance information.
    Type: Application
    Filed: October 14, 2021
    Publication date: May 5, 2022
    Inventors: Tao Chen, Lung-Sheng Tsai, Guan-Yu Lin, Ahmet Umut Ugurlu, Ming-Yuan Cheng
  • Patent number: 11317379
    Abstract: A UE determines N1 component carriers on each of which the UE is configured to detect a respective one PDCCH in a slot. The UE determines N2 component carriers on each of which the UE is configured to detect respective at least two PDCCHs in the slot. The UE determines a total Q blind detections of PDCCH that the UE is capable of performing. The UE determines a first predetermined scaling factor X. The UE allocates M1 blind detections of the Q blind detections to be available on each of the N1 component carriers and M2 blind detections of the Q blind detections to be available on each of the N2 component carriers such that (N1*M1+N2*M2) is a largest integer no greater than Q. M2 equals to X*M1. The UE performs blind detections in accordance with the allocations.
    Type: Grant
    Filed: June 30, 2020
    Date of Patent: April 26, 2022
    Assignee: MEDIATEK INC.
    Inventors: Lung-Sheng Tsai, Chien-Hwa Hwang, Yi-Ju Liao
  • Publication number: 20220060233
    Abstract: Examples pertaining to reference signal sharing in mobile communications are described. An apparatus (e.g., UE) receives a plurality of reference signals comprising a first set of reference signals and a second set of reference signals. The apparatus performs time or frequency tracking based on the plurality of reference signals. Alternatively, the apparatus generates a channel state information (CSI) report associated with the plurality of reference signals and transmits the CSI report to a network.
    Type: Application
    Filed: August 2, 2021
    Publication date: February 24, 2022
    Inventors: Lung-Sheng Tsai, Jiann-Ching Guey, Tzu-Han Chou
  • Publication number: 20220060222
    Abstract: Examples pertaining to precoding-matched channel state information (CSI) feedback in mobile communications are described. An apparatus (e.g., UE) beamforms one or more of a plurality of ports used in reception of a channel state information reference signal (CSI-RS) with one or more precoders that are applied on one or more of the plurality of ports used in reception of a demodulation reference signal (DMRS) or a physical downlink shared channel (PDSCH). The apparatus generates a CSI feedback comprising at least a plurality of channel quality indication (CQIs) with respect to a plurality of hypothesized ranks. The apparatus then transmits the CSI feedback to a network.
    Type: Application
    Filed: August 4, 2021
    Publication date: February 24, 2022
    Inventors: Lung-Sheng Tsai, Jiann-Ching Guey
  • Patent number: 11258560
    Abstract: In one novel aspect, multiple TRPs information are provided for REG bundle configuration with PDCCH transmission and reception with multiple transmission points (TRPs). The UE configures a PDCCH associated with a CORESET comprising multiple CCEs, partitions the CORESET into multiple CCE groups associated with corresponding TCI-state, which corresponds to a source TRP, configures multiple resource element group (REG) bundles each with multiple resource elements (REs), and assumes the same precoder applied on PDCCH DMRS when the REs are in the same REG bundle and are associated with the same source TRP, and wherein each source TRP transmits corresponding portion of DCI data mapping to the corresponding first and second CCE group. In one embodiment, the REG bundles are predefined with each comprises only REs associated with the same source TRP. In another embodiment, each CCE group corresponding to a source TRP is indicated for the REG bundle configurations.
    Type: Grant
    Filed: November 13, 2019
    Date of Patent: February 22, 2022
    Assignee: MediaTek INC.
    Inventors: Lung-Sheng Tsai, Weidong Yang, Jiann-Ching Guey
  • Publication number: 20220046483
    Abstract: Various examples and schemes pertaining to enhancements for sidelink (SL) resource allocation in New Radio (NR) vehicle-to-everything (V2X) communications are described. A user equipment (UE) transmits to a peer UE assistance information with respect to a result of sensing of one or more resources reserved for a SL communication. The UE then receives a transmission from the peer UE on a resource selected by the peer UE based on the assistance information.
    Type: Application
    Filed: August 5, 2021
    Publication date: February 10, 2022
    Inventors: Tao Chen, Lung-Sheng Tsai
  • Publication number: 20220007371
    Abstract: A user equipment (UE) in wireless communication receives a configuration of search space (SS) sets that include a first SS set in a first control resource set (CORESET) and a second SS set in a second CORESET. The first CORESET and the second CORESET have different transmission configuration indication (TCI) states. The UE repeatedly receives downlink control information (DCI) via a first physical downlink control channel (PDCCH) and a second PDCCH. The first PDCCH is allocated with a first set of time-and-frequency resources configured for first SS set and the second PDCCH is allocated with a second set of time-and-frequency resources configured for the second SS set. The UE then parses the DCI to obtain control information for the wireless communication. Alternatively, the configuration of SS sets received by the UE is in one CORESET that has at least a TCI state and a second TCI state activated.
    Type: Application
    Filed: June 22, 2021
    Publication date: January 6, 2022
    Inventors: Gyu Bum Kyung, Chien-Yi Wang, Lung-Sheng Tsai
  • Patent number: 11201711
    Abstract: In one novel aspect, configurations for PDCCH transmission and reception with multiple transmission points are provided. The UE configures a PDCCH associated with a CORSET comprising multiple CCEs, partitions the CORSET into multiple TCI-state sets, wherein each TCI state set includes multiple CCE groups associated with corresponding TCI-state, which corresponds to a source TRP, activates one TCI state set, and receives DCI via the PDCCH, wherein the PDCCH is transmitted from at least the first source TRP and the second source TRP, and wherein each source TRP transmits corresponding portion of DCI data mapping to the corresponding first and second CCE group. The CORSET is partitioned in FDM or TDM way. In another novel aspect, a first and a second PDCCH associated with a first and a second TRP are configured for repetition transmission. The second PDCCH configuration is dependent upon the first PDCCH configuration.
    Type: Grant
    Filed: November 13, 2019
    Date of Patent: December 14, 2021
    Assignee: MediaTek INC.
    Inventors: Lung-Sheng Tsai, Weidong Yang, Cheng-Rung Tsai, Jiann-Ching Guey, Chia-Hao Yu
  • Patent number: 11201689
    Abstract: In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be a UE. The UE receives a first trigger indicating at least one trigger state for reporting channel state information on a carrier or multiple carriers. The UE generates respective one or more channel state information reports associated with each of the at least one trigger state, each of the respective one or more channel state information reports being generated in accordance with a respective set of configurations that are unique with respect to sets of configurations used to generate the rest of the respective one or more channel state information reports. The UE sends the respective one or more channel state information reports associated with each of the at least one trigger state.
    Type: Grant
    Filed: June 20, 2019
    Date of Patent: December 14, 2021
    Assignee: MEDIATEK INC.
    Inventors: Lung-Sheng Tsai, Teemu Tapio Virtanen
  • Patent number: 11184132
    Abstract: Apparatus and methods are provided multiple transmission. In one novel aspect, TCI-state indication for non-coherent joint transmission (NCJT) channel station information (CSI) reporting is provided. The UE receives NCJT from at least a first transmission from a first transmission point (TRP) and a second transmission from a second TRP, determines a receiving (RX) spatial filter information for the NCJT and acquires channel state information (CSI) according to a report setting based on the determined RX spatial filter to simultaneously acquire at least two channel measurement resources (CMRs) and one interference measurement resource (IMR), wherein at least one CMR is from the first TRP and at least one CMR is from the second TRP. In one embodiment, the RX spatial filter information is determined based on a group-based beam reporting procedure performed by the UE. In another embodiment, the RX spatial filter information is determined based on TCI-state received from the wireless network.
    Type: Grant
    Filed: November 13, 2019
    Date of Patent: November 23, 2021
    Assignee: MediaTek INC.
    Inventors: Lung-Sheng Tsai, Cheng-Rung Tsai, Weidong Yang
  • Patent number: 11121803
    Abstract: In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be a UE. The UE determines a first uplink slot on an uplink carrier for reporting channel state information. The UE determines, on a downlink carrier, a first downlink slot that is an earliest downlink slot overlaps with the first uplink slot. The UE determines a number M based on a numerology of the downlink carrier, M being an integer greater than or equal to 0. The UE measures a reference signal, received no later than a second downlink slot that is a latest valid downlink slot no later than M downlink slots prior to the first downlink slot, to generate the channel state information.
    Type: Grant
    Filed: May 9, 2019
    Date of Patent: September 14, 2021
    Assignee: MEDIATEK INC.
    Inventors: Teemu Tapio Virtanen, Weidong Yang, Karl Marko Juhani Lampinen, Lung-Sheng Tsai
  • Patent number: 11121814
    Abstract: In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be a UE. The UE determines priority levels of a plurality of messages based on at least one predetermined rule. The plurality of messages contain channel state information to be reported to a base station. The at least one predetermined rule specifies that a message including an indicator indicating at least one of a beam selection at a particular dimension and an orthogonal beam group selection has a priority level higher than a priority level of a message including an indicator indicating at least one of a beam direction from a group of beam candidates or co-phasing between two sets of antennas for two polarizations. The UE sends, to the base station, one or more messages of the plurality of messages based on the priority levels of the plurality of messages.
    Type: Grant
    Filed: October 16, 2019
    Date of Patent: September 14, 2021
    Assignee: MEDIATEK INC.
    Inventors: Lung-Sheng Tsai, Weidong Yang