Patents by Inventor Cheng-Rung Tsai

Cheng-Rung 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: 20220231807
    Abstract: Apparatus and methods are provided for configuring application of TCI state to an RS. In one novel aspect, an RRC configuration is introduced for indicating to the UE whether to apply an indicated TCI state to an RS. In particular, a BS can transmit an RRC configuration of an RS to a UE. The UE can receive the RRC configuration from the BS. The BS can transmit an indication of one or more TCI states to the UE. The UE can receive the indication of the one or more TCI states from the BS. The UE can determine whether to apply the TCI state to the RS according to the RRC configuration.
    Type: Application
    Filed: December 4, 2021
    Publication date: July 21, 2022
    Inventor: Cheng-Rung Tsai
  • Publication number: 20220231801
    Abstract: Apparatus and methods are provided for configuring application of TCI state to CCs. In one novel aspect, a UE may apply one or more TCI states to a set of CCs based on a slot of a reference CC. In particular, a BS can transmit an indication of one or more TCI states to a UE. The UE can receive the indication of the one or more TCI states from the BS. Then, the can apply the one or more TCI states to a set of CCs from a specific slot of a reference CC. The reference CC may have a smallest SCS among the set of the CCs.
    Type: Application
    Filed: December 4, 2021
    Publication date: July 21, 2022
    Inventor: Cheng-Rung Tsai
  • Patent number: 11336403
    Abstract: A method of a hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback mechanism includes receiving at a user equipment (UE) one or more first downlink control informations (DCIs) associated with first downlink transmissions belonging to a first HARQ-ACK feedback group. One of the first DCIs requests one or more second HARQ-ACK feedback groups to be acknowledged over a HARQ-ACK transmission opportunity (TxOP). A HARQ-ACK feedback for the first HARQ-ACK feedback group and the one or more second HARQ-ACK feedback groups is transmitted over the HARQ-ACK TxOP.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: May 17, 2022
    Assignee: MEDIATEK INC.
    Inventors: Cheng-Rung Tsai, Chun-Hsuan Kuo
  • Publication number: 20220132569
    Abstract: Various solutions for Ultra-Reliable Low-Latency Communication (URLLC) Frame Based Equipment (FBE) user equipment (UE)-initiated channel occupancy time (COT) enhancement in mobile communications are described. An apparatus, implementable in a UE, receives a signal from a network and obtains a UE-initiated COT in an idle or connected mode responsive to receiving the signal. The apparatus then performs a transmission to the network in the UE-initiated COT.
    Type: Application
    Filed: October 14, 2021
    Publication date: April 28, 2022
    Inventors: Abdellatif Salah, Mohammed S Aleabe Al-Imari, Pradeep Jose, Cheng-Rung Tsai, Chiou-Wei Tsai
  • Publication number: 20220124752
    Abstract: Apparatus and methods are provided for configuring TCI state activation and indication for DL transmission and UL transmission. In one novel aspect, list(s) associated with DL transmission, UL transmission or both DL transmission and UL transmission is/are provided. In particular, a UE can be configured with a plurality of TCI states. After being configured with the TCI states, the UE can receive a command that includes the list(s) associated with DL transmission, UL transmission or both DL transmission and UL transmission. The list(s) records a plurality of TCI state identifications. Accordingly, when the UE receives a value of a TCI field from a DCI and the value maps to designated TCI state identification(s) recorded on the list(s), the UE can apply designated TCI state(s) corresponding to the designated TCI state identification(s) for DL transmission, UL transmission or both DL transmission and UL transmission.
    Type: Application
    Filed: September 21, 2021
    Publication date: April 21, 2022
    Inventor: Cheng-Rung Tsai
  • Publication number: 20220070857
    Abstract: A method for providing multiple physical uplink control channel (PUCCH) resources for a uplink control information (UCI) report can include receiving one or more PUCCH resource configurations from a base station (BS) at a user equipment (UE) in a wireless communication system, and determining a first PUCCH resource configuration from the one or more PUCCH resource configurations for reporting a UCI. The first PUCCH resource configuration can indicate multiple frequency domain transmission occasions in a bandwidth. The UCI can be transmitted on at least one of the multiple frequency domain transmission occasions indicated by the first PUCCH resource configuration.
    Type: Application
    Filed: November 12, 2021
    Publication date: March 3, 2022
    Applicant: MEDIATEK INC.
    Inventor: Cheng-Rung 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: 11191063
    Abstract: A method for providing multiple physical uplink control channel (PUCCH) resources for a uplink control information (UCI) report can include receiving one or more PUCCH resource configurations from a base station (BS) at a user equipment (UE) in a wireless communication system, and determining a first PUCCH resource configuration from the one or more PUCCH resource configurations for reporting a UCI. The first PUCCH resource configuration can indicate multiple frequency domain transmission occasions in a bandwidth. The UCI can be transmitted on at least one of the multiple frequency domain transmission occasions indicated by the first PUCCH resource configuration.
    Type: Grant
    Filed: December 16, 2019
    Date of Patent: November 30, 2021
    Assignee: MEDIATEK INC.
    Inventor: Cheng-Rung Tsai
  • 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
  • Publication number: 20210306843
    Abstract: A method for UE capability signaling for supporting reference signal based measurements in NR-U is proposed. A UE transfers its UE capability information to a mobile communication network, wherein the UE capability information includes information regarding whether the UE supports measurements of a CSI-RS on an unlicensed cell. The UE receives configuration from the mobile communication network, wherein the configuration includes information regarding radio resources of the CSI-RS on the unlicensed cell. The UE measures the CSI-RS on the unlicensed cell based on the configuration.
    Type: Application
    Filed: March 3, 2021
    Publication date: September 30, 2021
    Inventors: Chiou-Wei Tsai, Cheng-Rung Tsai
  • Patent number: 11057780
    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, from a base station, one or more downlink reference signals on an unlicensed carrier. The UE determines that the base station occupies the unlicensed carrier for a predetermined first channel occupancy time based on the one or more downlink reference signals. The UE receives, on the unlicensed carrier and in the predetermined first channel occupancy time, a control burst including a plurality of down link control channels. The UE attempts to decode a first down link control channel directed to the UE from the control burst.
    Type: Grant
    Filed: August 9, 2019
    Date of Patent: July 6, 2021
    Assignee: MEDIATEK INC.
    Inventors: Chiou-Wei Tsai, Jiann-Ching Guey, Chun-Hsuan Kuo, Cheng-Rung Tsai
  • Patent number: 11025457
    Abstract: Aspects of the disclosure provide a user equipment (UE). The UE receives configuration information of multiple transmission configuration indication (TCI) states. The UE receives one or more activation commands that associate a first subset of the TCI states with one or more codepoints of a TCI field and a second subset of the TCI states with the one or more codepoints of the TCI field. The UE receives a codepoint associated with a first TCI state in the first subset of the TCI states and a second TCI state in the second subset of the TCI states. The UE determines at least one first quasi co-located (QCL) assumption according to the first TCI state and at least one second QCL assumption according to the second TCI state. The UE receives a downlink transmission based on the at least one first QCL assumption and the at least one second QCL assumption.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: June 1, 2021
    Assignee: MEDIATEK INC.
    Inventors: Cheng-Rung Tsai, Chia-Hao Yu, Weidong Yang
  • Publication number: 20210144717
    Abstract: Various solutions for dynamic physical downlink control channel (PDCCH) monitoring with respect to user equipment and network apparatus in mobile communications are described. An apparatus may receive a switching group configuration indicating a group of serving cells which are bundled. The apparatus may receive a first configuration and a second configuration. The apparatus may perform control signal monitoring according to the first configuration. The apparatus may determine to switch to the second configuration on a first serving cell of the group of serving cells according to an indication associated with the first serving cell. The apparatus may apply the switching to all serving cells within the group of serving cells according to the indication associated with the first serving cell.
    Type: Application
    Filed: October 1, 2020
    Publication date: May 13, 2021
    Inventors: Chiou-Wei Tsai, Cheng-Rung Tsai
  • Publication number: 20210120580
    Abstract: A user equipment terminal (UE) in a wireless network receives configuration information for a serving cell from a base station. The UE identifies, from the configuration information, a downlink control information (DCI) format that includes a channel occupancy duration (CO duration) field for the serving cell. After detecting the DCI format, the UE determines, from the CO duration field for the serving cell included in the DCI format, a channel occupancy in a time domain for the serving cell at a symbol-level granularity.
    Type: Application
    Filed: September 17, 2020
    Publication date: April 22, 2021
    Inventor: Cheng-Rung Tsai
  • Publication number: 20210068128
    Abstract: An apparatus (e.g., a user equipment (UE)) maps a plurality of mutually orthogonal sequences to each of a plurality of physical resource blocks (PRBs) within an interlace. The apparatus then performs a physical uplink control channel (PUCCH) transmission in a New Radio unlicensed spectrum (NR-U). The apparatus also receives an assignment of a set of sequences for each PRB of the plurality of PRBs from a wireless network. In response, the apparatus performs an uplink control information (UCI) transmission via the PUCCH in the NR-U.
    Type: Application
    Filed: August 11, 2020
    Publication date: March 4, 2021
    Inventors: Chun-Hsuan Kuo, Jiann-Ching Guey, Chiou-Wei Tsai, Cheng-Rung Tsai
  • Publication number: 20210050947
    Abstract: A base station provides downlink feedback information (DFI) to a user equipment (UE) in a wireless network. The base station generates hybrid automatic repeat request (HARQ) acknowledgment (HARQ-ACK) information in a downlink control information (DCI) payload for each HARQ process associated with uplink transmission from the UE to the base station. The base station sets a DFI flag in the DCI payload to a predetermined value. The base station generates error detection bits based on the DCI payload, and sends DCI to the UE. The DCI includes the DCI payload and the error detection bits scrambled with a configured scheduling radio network temporary identifier (CS-RNTI).
    Type: Application
    Filed: June 19, 2020
    Publication date: February 18, 2021
    Inventor: Cheng-Rung Tsai
  • Patent number: 10924225
    Abstract: A method can include receiving one or more downlink control informations (DCIs) that are associated with first downlink transmissions belonging to a first hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback group at a user equipment (UE) in a wireless communication system, receiving a first request that indicates a first group index (GI) of the first HARQ-ACK feedback group and a first HARQ-ACK transmission opportunity (TxOP), and transmitting first acknowledge bits for acknowledging receptions of downlink transmissions belonging to the first HARQ-ACK feedback group over the first HARQ-ACK TxOP indicated by the first request.
    Type: Grant
    Filed: August 1, 2019
    Date of Patent: February 16, 2021
    Assignee: MEDIATEK INC.
    Inventors: Cheng-Rung Tsai, Chiou-Wei Tsai
  • Patent number: 10917212
    Abstract: A method of default Quasi-Co-Location (QCL) assumption for Physical Downlink Shared Channel (PDSCH) reception in NR network is proposed. When PDSCH is scheduled by a DCI over PDCCH after a Scheduling Offset, the spatial RX filter for the PDSCH reception can be determined according to a QCL indication conveyed by the DCI. When the Scheduling Offset for PDSCH reception scheduled by DCI is less than a time duration, then a default QCL assumption is applied. UE assumes that the DMRS ports of PDSCH of a serving cell are QCLed with the RS(s) with respect to QCL parameter(s) used for PDCCH QCL indication of a CORESET. The CORESET is associated with a UE-monitored search space in the latest slot with the lowest CORESET-IF on an active BWP on the serving cell.
    Type: Grant
    Filed: August 9, 2019
    Date of Patent: February 9, 2021
    Assignee: MediaTek INC.
    Inventors: Chia-Hao Yu, Cheng-Rung Tsai, Weidong Yang
  • Patent number: 10868629
    Abstract: Techniques and examples of channel multiplexing within interlace for New Radio (NR) unlicensed spectrum (NR-U) operation are described. An apparatus (e.g., user equipment (UE)) determines which sub-interlace of multiple sub-interlaces in each of a plurality of interlaces is assigned to the apparatus. The apparatus then performs an uplink (UL) transmission to a wireless network in an NR-U using the assigned sub-interlace in each of the plurality of interlaces. Each of the plurality of interlaces may be divided into respective multiple sub-interlaces with channel multiplexing.
    Type: Grant
    Filed: April 5, 2019
    Date of Patent: December 15, 2020
    Assignee: MEDIATEK INC.
    Inventors: Chun-Hsuan Kuo, Jiann-Ching Guey, Chiou-Wei Tsai, Ming-Po Chang, Cheng-Rung Tsai
  • Patent number: 10841926
    Abstract: A method of default uplink beam determination after radio resource control (RRC) connection reestablishment in a beamforming system is proposed. For uplink (UL) transmission, the BS provides dedicated physical uplink control channel (PUCCH) resource configuration to UE. The configuration includes spatial relation information that indicates the spatial domain transmission filter to be used by UE for the corresponding PUCCH transmission. After RRC connection re-establishment and before a dedicated PUCCH configuration is received, a default UE TX beam can be determined based on the UE TX beam used during the RRC connection re-establishment procedure, e.g., the UE TX beam used to transmit MSG3 in a four-step random-access channel (RACH) procedure triggered by the RRC connection re-establishment procedure.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: November 17, 2020
    Assignee: MediaTek INC.
    Inventors: Cheng-Rung Tsai, Ming-Po Chang, Chia-Hao Yu, Weidong Yang, Jiann-Ching Guey