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: 20190349154
    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 detects one or more signals transmitted from a base station in a first unit of a set of units contained in a bandwidth part of an unlicensed carrier, the first unit having contiguous frequency resources. The one or more signals indicating that the base station has occupied the first unit for a first time duration and indicating a schedule of a set of slots in the first time duration for communication with the base station. The UE receives, in a first time slot of the set of slots and from the base station, a control channel.
    Type: Application
    Filed: May 9, 2019
    Publication date: November 14, 2019
    Inventors: Chiou-Wei TSAI, Jiann-Ching Guey, Chun-Hsuan Kuo, Cheng-Rung Tsai
  • Publication number: 20190312660
    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: Application
    Filed: April 5, 2019
    Publication date: October 10, 2019
    Inventors: Chun-Hsuan Kuo, Jiann-Ching Guey, Chiou-Wei Tsai, Ming-Po Chang, Cheng-Rung Tsai
  • Publication number: 20190268893
    Abstract: A method of default uplink beam determination after a beam failure recovery (BFR) procedure in a beamforming system is proposed. For uplink (UL) transmission, the BS provides physical uplink control channel (PUCCH) resource configuration to UE. The configuration includes spatial relation information that indicates the spatial filter to be used by UE for the corresponding PUCCCH transmission. After BFR procedure is completed and before the first spatial relation information indication for a PUCCH resource is received by UE, a default UE TX beam for the PUCCH resource can be determined based on the UE TX beam used during the BFR procedure, e.g., the UE TX beam used to transmit a beam failure recovery request (BFRQ) during the BFR procedure.
    Type: Application
    Filed: February 22, 2019
    Publication date: August 29, 2019
    Inventors: Cheng-Rung Tsai, Ming-Po Chang, Chia-Hao Yu, Weidong Yang, Jiann-Ching Guey
  • Publication number: 20190268961
    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: Application
    Filed: February 22, 2019
    Publication date: August 29, 2019
    Inventors: Cheng-Rung Tsai, Ming-Po Chang, Chia-Hao Yu, Weidong Yang, Jiann-Ching Guey
  • Publication number: 20190253904
    Abstract: Aspects of the disclosure provide a method for reception of simultaneously transmitted downlink channels having different spatial quasi-co-location (sQCL) assumptions. The method can include receiving a configuration specifying a control resource set (CORESET) monitoring occasion of a first physical downlink control channel (PDCCH) at a user equipment (UE), receiving a second PDCCH scheduling or activating transmission of a physical downlink shared channel (PDSCH) at the UE, determining whether the PDSCH overlaps the first PDCCH in time domain, determining whether a first spatial quasi-co-location (sQCL) assumption for reception of the first PDCCH and a second sQCL assumption for reception of the PDSCH are different, and prioritizing the reception of the first PDCCH when the PDSCH overlaps the first PDCCH in time domain and the first and second sQCL assumptions are different.
    Type: Application
    Filed: January 29, 2019
    Publication date: August 15, 2019
    Applicant: MEDIATEK INC.
    Inventors: Cheng-Rung Tsai, Chia-Hao Yu, Jiann-Ching Guey
  • Publication number: 20190103908
    Abstract: A method of uplink beam indication for uplink transmission in a beamforming network is proposed. After entering connected mode, both downlink and uplink have a default beam pair link (BPL). Based on uplink beam management, the network establishes mapping between uplink beam indication states and reference signal (RS) resources. The network then signals the uplink beam indication states mapping to UE. UE performs subsequent uplink transmission based on the uplink beam indication, where UE determines its TX beams by mapping from RS resources to corresponding UE TX beams. The uplink beam indication is updated whenever a mapping between a beam indication state to a UE TX beam is changed.
    Type: Application
    Filed: September 28, 2018
    Publication date: April 4, 2019
    Inventors: Chia-Hao Yu, Cheng-Rung Tsai, Ming-Po Chang, Jiann-Ching Guey
  • Publication number: 20190068262
    Abstract: A method of antenna capability signaling and group-based reference signal resource configuration is proposed. A User Equipment (UE) provides its antenna capability signaling to BS to facilitate the UL beam training. From UE perspective, different antenna structures can be assumed and different beamforming mechanisms can be achieved based on the antenna structures. When BS determines multiple UL beam pair links (BPLs), BS needs to know the UE antenna capability information. In a preferred embodiment, group-based UL RS resources are configured for UL beam determination based on the UE antenna capability signaling, which helps BS to learn the UE beamforming constraints as well as UL beamformed channels corresponding to the UL BPLs.
    Type: Application
    Filed: August 22, 2018
    Publication date: February 28, 2019
    Inventors: Chia-Hao Yu, Weidong Yang, Ming-Po Chang, Cheng-Rung Tsai, Jiann-Ching Guey
  • Publication number: 20190068263
    Abstract: A method of configuring different uplink beam management (UL BM) procedures is proposed. Different UL BM procedures are defined such that UE knows how to transmit the configured uplink reference signal (UL RS) over UL RS resource groups to BS. A first UL BM procedure enables UE to transmit with sweeping TX beams and enables BS to measure with sweeping RX beams (U-1 procedure). A second UL BM procedure enables UE to transmit UL RS on a number of UL resources with a fixed UE TX beam (U-2 procedure). A third UL BM procedure enables UE to transmit UL RS on a number of UL resources with different UE TX beams (U-3 procedure).
    Type: Application
    Filed: August 22, 2018
    Publication date: February 28, 2019
    Inventors: Chia-Hao Yu, Weidong Yang, Ming-Po Chang, Cheng-Rung Tsai, Jiann-Ching Guey
  • Patent number: 10009073
    Abstract: A system for acquiring channel knowledge and a method thereof are provided. At least one transmitter generates multiple directional beams in different directions, next modulates the directional beams in the different directions with at least one spreading sequence, so as to enlarge the beam range of each directional beam in the different directions and use the modulated directional beams as training-specific beams in the different directions, and sweeps the multiple training-specific beams in the different directions by using a plurality of antennas, so that at least one receiver measures at least one training-specific beam, and determines the channel knowledge according to the measurement result and beam-related information associated with the at least one training-specific beam, so as to achieve a technical effect of reducing training overhead.
    Type: Grant
    Filed: January 6, 2017
    Date of Patent: June 26, 2018
    Assignees: MediaTek Inc., NATIONAL TAIWAN UNIVERSITY
    Inventors: Cheng-Rung Tsai, An-Yeu Wu, Ju-Ya Chen, Qiang Zhou
  • Publication number: 20170272132
    Abstract: A system for acquiring channel knowledge and a method thereof are provided. At least one transmitter generates multiple directional beams in different directions, next modulates the directional beams in the different directions by means of at least one spreading sequence, so as to enlarge the beam range of each directional beam in the different directions and use the modulated directional beams as training-specific beams in the different directions, and sweeps the training-specific beams in the different directions by means of a plurality of antennas, so that at least one receiver measures at least one training-specific beam, and determines the channel knowledge according to the measurement result and beam-related information associated with the at least one training-specific beam, so as to achieve a technical effect of reducing training overhead.
    Type: Application
    Filed: January 6, 2017
    Publication date: September 21, 2017
    Inventors: Cheng-Rung TSAI, An-Yeu WU, Ju-Ya CHEN, Qiang ZHOU
  • Patent number: 9442617
    Abstract: A multi-channel sensing system and operating method thereof are disclosed. The multi-channel sensing system includes a transceiver, emitting electrodes, and a receiving electrode. The transceiver includes a spreading code generator and a modulator. The spreading code generator generates a non-orthogonal spreading code through an invertible matrix and then the modulator modulates a data signal to spreading signals according to the non-orthogonal spreading code. The emitting electrodes, corresponding to sensing channels respectively, emit the spreading signals at the same time to pass through corresponding sensing channels respectively, and the spreading signals are converted into coupled signals by capacitive coupling. The receiving electrode receives the coupled signals and generates a received signal according to the coupled signals.
    Type: Grant
    Filed: January 16, 2015
    Date of Patent: September 13, 2016
    Assignee: Raydium Semiconductor Corporation
    Inventors: Cheng-Rung Tsai, An-Yeu Wu, Shih-Lun Huang, Chih Yuan, Hsu-Ming Chuang
  • Publication number: 20160229501
    Abstract: A lifesaving bag includes: a band, including a first side, a second side, a head end engaging section and a rear end engaging section; a zipper group, including a first zipper portion disposed at the first side, a second zipper portion disposed at the second side, and a zipper head adapted for engaging and disengaging the first zipper portion and the second zipper portion; a bottom portion, fixed with the rear end engaging section; a head portion, fixed with the head end engaging portion. When the first zipper portion and the second zipper portion are engaged, the band forms a hollow body, and the head portion and the bottom portion enclose upper and lower ends of the hollow body to form a bag. When the first zipper portion and the second zipper portion are disengaged, the band becomes a long strip-like rescue rope.
    Type: Application
    Filed: August 3, 2015
    Publication date: August 11, 2016
    Inventors: CHENG-RUNG TSAI, YI-TING ZENG
  • Publication number: 20150205408
    Abstract: A multi-channel sensing system and operating method thereof are disclosed. The multi-channel sensing system includes a transceiver, emitting electrodes, and a receiving electrode. The transceiver includes a spreading code generator and a modulator. The spreading code generator generates a non-orthogonal spreading code through an invertible matrix and then the modulator modulates a data signal to spreading signals according to the non-orthogonal spreading code. The emitting electrodes, corresponding to sensing channels respectively, emit the spreading signals at the same time to pass through corresponding sensing channels respectively, and the spreading signals are converted into coupled signals by capacitive coupling. The receiving electrode receives the coupled signals and generates a received signal according to the coupled signals.
    Type: Application
    Filed: January 16, 2015
    Publication date: July 23, 2015
    Inventors: Cheng-Rung Tsai, An-Yeu Wu, Shih-Lun Huang, Chih Yuan, Hsu-Ming Chuang