Patents by Inventor Jeng-Yi Tsai

Jeng-Yi 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: 10645658
    Abstract: Methods and apparatuses pertaining to uplink power consumption reduction for a Narrow Band-Internet of Things (NB-IoT) apparatus. The NB-IoT apparatus may transmit uplink data to a network apparatus via an uplink channel. The network apparatus may decode the uplink data. The network apparatus may further transmit an acknowledgement (ACK) indicator to the NB-IoT apparatus before receiving all the uplink data if the uplink data is decoded successfully. The NB-IoT apparatus may monitor whether an ACK indicator is received from the network apparatus during a transmission gap of the uplink channel. The NB-IoT apparatus may further terminate uplink data transmission if the ACK indicator is received.
    Type: Grant
    Filed: August 28, 2017
    Date of Patent: May 5, 2020
    Assignee: MEDIATEK INC.
    Inventors: Po-Ying Chen, Mingchun Chiang, Jeng-Yi Tsai, Ho-Chi Huang, Wei-Nan Sun, Wenze Qu
  • Publication number: 20180212698
    Abstract: Apparatus and methods are provided for decoding DL PHY channels in a narrow band wireless system. In one novel aspect, the UE performs a cell search and determines a first location of a resource block carrying system signals, obtains a second location of a second resource block based on the first resource block, wherein the second resource block includes a format indicator, determines a DL transmission format based on the format indicator, and receives and decodes a first DL physical channel based on the DL transmission format. In one embodiment, the UE operates in either a standalone mode, an in-band mode, or a guard-band mode. The DL transmission format comprises an offset index from a middle/central frequency of the first resource block in the in-band mode or the guard-band mode. In another embodiment, the UE further decodes a second DL physical channel carrying the format indicator.
    Type: Application
    Filed: March 23, 2018
    Publication date: July 26, 2018
    Inventors: Feifei Sun, Lei Zhang, Kuhn-Chang Lin, Jeng-Yi Tsai, Xiu-Sheng Li
  • Publication number: 20180070317
    Abstract: Methods and apparatuses pertaining to uplink power consumption reduction for a Narrow Band-Internet of Things (NB-IoT) apparatus. The NB-IoT apparatus may transmit uplink data to a network apparatus via an uplink channel. The network apparatus may decode the uplink data. The network apparatus may further transmit an acknowledgement (ACK) indicator to the NB-IoT apparatus before receiving all the uplink data if the uplink data is decoded successfully. The NB-IoT apparatus may monitor whether an ACK indicator is received from the network apparatus during a transmission gap of the uplink channel. The NB-IoT apparatus may further terminate uplink data transmission if the ACK indicator is received.
    Type: Application
    Filed: August 28, 2017
    Publication date: March 8, 2018
    Inventors: Po-Ying Chen, Mingchun Chiang, Jeng-Yi Tsai, Ho-Chi Huang, Wei-Nan Sun, Wenze Qu
  • Patent number: 9854519
    Abstract: A handheld device, a base station and transmission control methods thereof are provided. The handheld device transmits an uplink signal to the base station. The uplink signal comprises an uplink dedicated physical data channel (UL DPDCH) carrying data information in the first half of the non-transmission gap (non-TG) data slots and a corresponding uplink dedicated physical control channel (UL DPCCH) carrying control information according to a transmission mode.
    Type: Grant
    Filed: January 26, 2015
    Date of Patent: December 26, 2017
    Assignee: MEDIATEK INC.
    Inventor: Jeng-Yi Tsai
  • Patent number: 9713128
    Abstract: A handheld device, a base station and transmission control methods thereof are provided. The handheld device transmits an uplink signal to the base station with an uplink dedicated physical control channel (UL DPCCH) carrying both transport format combination indicator (TFCI) code word and acknowledgement (ACK) information. The base station terminates a downlink signal transmission to the handheld device in response to the ACK information.
    Type: Grant
    Filed: November 11, 2014
    Date of Patent: July 18, 2017
    Assignee: MEDIATEK INC.
    Inventor: Jeng-Yi Tsai
  • Publication number: 20170141884
    Abstract: A user equipment, a base station, and an early decoding method for the user equipment are provided. The user equipment executes an early decoding method by disabling some specific frame early termination chances in a blind transport format detection decoding trials so as to reduce decoding complexity. The base station retrieves acknowledgement information transmitted from the UE to terminate transmitting a remaining part of a downlink data once the ACK information indicates an ACK response.
    Type: Application
    Filed: August 7, 2015
    Publication date: May 18, 2017
    Inventors: Xiu-Sheng LI, Jeng-Yi TSAI
  • Patent number: 9596658
    Abstract: Power control methods are provided. The power control method, performed by a receiving end device, includes receiving two consecutive slots from a dedicated physical channel (DPCH), determining a transmit power control command based on signal qualities of the two consecutive slots; and transmitting the transmit power control command in only a first transmit power control field that is firstly available after the transmit power control command is determined.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: March 14, 2017
    Assignee: MEDIATEK INC.
    Inventor: Jeng-Yi Tsai
  • Publication number: 20150334700
    Abstract: A handheld device, a base station and transmission control methods thereof are provided. The handheld device transmits an uplink signal to the base station. The uplink signal comprises an uplink dedicated physical data channel (UL DPDCH) including a first radio data frame, a second radio data frame, a third radio data frame and a fourth radio data frame within two transmission time intervals (TTIs). A first dedicated traffic channel (DTCH) information data and first two segments of a dedicated control channel (DCCH) information data are repeatedly carried in the first and second radio data frames, and a second DTCH information data and last two segments of the dedicated control channel (DCCH) information data are repeatedly carried in the third and fourth radio data frames.
    Type: Application
    Filed: May 19, 2015
    Publication date: November 19, 2015
    Inventor: Jeng-Yi Tsai
  • Publication number: 20150215869
    Abstract: A handheld device, a base station and transmission control methods thereof are provided. The handheld device transmits an uplink signal to the base station. The uplink signal comprises an uplink dedicated physical data channel (UL DPDCH) carrying data information in the first half of the non-transmission gap (non-TG) data slots and a corresponding uplink dedicated physical control channel (UL DPCCH) carrying control information according to a transmission mode.
    Type: Application
    Filed: January 26, 2015
    Publication date: July 30, 2015
    Inventor: Jeng-Yi Tsai
  • Publication number: 20150131626
    Abstract: A handheld device, a base station and transmission control methods thereof are provided. The handheld device transmits an uplink signal to the base station with an uplink dedicated physical control channel (UL DPCCH) carrying both transport format combination indicator (TFCI) code word and acknowledgement (ACK) information. The base station terminates a downlink signal transmission to the handheld device in response to the ACK information.
    Type: Application
    Filed: November 11, 2014
    Publication date: May 14, 2015
    Inventor: Jeng-Yi Tsai
  • Publication number: 20140301429
    Abstract: A data processing method performed by a Universal Mobile Telecommunications System Frequency Division Duplexing (UMTS-FDD) device includes at least the following steps: generating a control frame and a data frame, wherein the data frame is spread according to a fixed spreading factor which is not greater than a minimum spreading factor prescribed in a UMTS-FDD Release 99 specification, and the control frame includes a transport format combination indicator (TFCI) data; and transmitting the control frames through an uplink dedicated physical control channel (UL DPCCH) and transmitting the data frames through an uplink dedicated physical data channel (UP DPDCH).
    Type: Application
    Filed: December 17, 2013
    Publication date: October 9, 2014
    Applicant: MEDIATEK INC.
    Inventor: Jeng-Yi Tsai
  • Publication number: 20140293969
    Abstract: A method of utilizing same indication fields of time slots for different purposes includes: transmitting an indication signal in an indication field of at least one first time slot on a dedicated physical channel (DPCH); and transmitting at least one known symbol in an indication field of at least one second time slot on the DPCH, wherein the known symbol is arranged for estimating channel characteristics.
    Type: Application
    Filed: December 19, 2013
    Publication date: October 2, 2014
    Applicant: MEDIATEK INC.
    Inventors: Jeng-Yi Tsai, Ho-Chi Huang
  • Publication number: 20140293847
    Abstract: A data processing method performed by a Universal Mobile Telecommunications System Frequency Division Duplexing (UMTS-FDD) device includes at least the following steps: receiving a control frame from a dedicated physical control channel (DPCCH) and a data frame from a dedicated physical data channel (DPDCH), wherein the control frame includes n slots, and each slot thereof includes at least a portion of a transport format combination indicator (TFCI) codeword, wherein n is a positive integer, and the TFCI codeword is encoded from TFCI content for indicating a transport format combination of the data frame; and when m of the n slots are received, starting to decode the data frame according to the m slots, wherein m is a positive integer and less than n.
    Type: Application
    Filed: December 17, 2013
    Publication date: October 2, 2014
    Applicant: MEDIATEK INC.
    Inventor: Jeng-Yi Tsai
  • Publication number: 20130322332
    Abstract: Power control methods are provided.
    Type: Application
    Filed: March 14, 2013
    Publication date: December 5, 2013
    Applicant: MediaTek Inc.
    Inventor: Jeng-Yi TSAI
  • Publication number: 20130322333
    Abstract: A network server and method thereof are provided. The method performed by a network server includes receiving a first data from a first radio frame on a UL DPDCH, despreading the first data with a fixed spreading factor, de-rate matching the despreaded first data with a plurality of de-rate matching schemes, and determining a transport format of the first data that is being used based on all decoded data.
    Type: Application
    Filed: May 14, 2013
    Publication date: December 5, 2013
    Applicant: MediaTek Inc.
    Inventor: Jeng-Yi TSAI
  • Publication number: 20130322364
    Abstract: Embodiments of a method and a mobile communications device utilizing the same are provided. The method is implemented in a mobile communications device, including retrieving a first data from a TPC field of a slot of a radio frame from a downlink dedicated physical channel (DL DPCH), decoding an uplink TPC command based on the first data, and estimating a signal quality based on the first data.
    Type: Application
    Filed: May 17, 2013
    Publication date: December 5, 2013
    Applicant: MediaTek Inc.
    Inventor: Jeng-Yi TSAI
  • Patent number: 8463198
    Abstract: A communication apparatus is provided. A processor receives a measurement control message carrying information about a filtering coefficient via a radio transceiver module, periodically measures signal quality of at least one cell to obtain a plurality of measurement results, periodically filters the measurement results according to a first measurement period to obtain a plurality of filtered results, and determines whether to transmit a measurement report to a system controller in the wireless communication network according to the filtered results. The filtering coefficient is assigned by the system controller to filter the measurement results according to a second measurement period.
    Type: Grant
    Filed: July 15, 2009
    Date of Patent: June 11, 2013
    Assignee: Mediatek Inc.
    Inventors: Yuan Ho, Wei-Sheng Yin, Jeng-Yi Tsai, I-Ping Chang, Keng-Ming Huang, Chia-Chen Hsu
  • Patent number: 8064932
    Abstract: A communication apparatus is provided. A radio transceiver module receives paging indicators according to a first activation signal. A baseband processing module receives the paging indicators from the radio transceiver module and processes the paging indicators according to a second activation signal. A controller obtains corresponding system frame numbers of periodic radio frames, obtains a corresponding paging indicator position in each periodic radio frame, obtains a first and a second wake up time interval distributed within each periodic radio frame according to the corresponding paging indicator position, generates the first and the second activation signal to respectively activate the radio transceiver module and the baseband processing module during the first and the second wake up time interval, wherein both a length of the first wake up time interval and a length of the second wake up time interval are smaller than a length of a periodic radio frame.
    Type: Grant
    Filed: December 5, 2008
    Date of Patent: November 22, 2011
    Assignee: Mediatek Inc.
    Inventor: Jeng-Yi Tsai
  • Publication number: 20110014906
    Abstract: A communication apparatus is provided. A processor receives a measurement control message carrying information about a filtering coefficient via a radio transceiver module, periodically measures signal quality of at least one cell to obtain a plurality of measurement results, periodically filters the measurement results according to a first measurement period to obtain a plurality of filtered results, and determines whether to transmit a measurement report to a system controller in the wireless communication network according to the filtered results. The filtering coefficient is assigned by the system controller to filter the measurement results according to a second measurement period.
    Type: Application
    Filed: July 15, 2009
    Publication date: January 20, 2011
    Applicant: MEDIATEK INC.
    Inventors: Yuan Ho, Wei-Sheng Yin, Jeng-Yi Tsai, I-Ping Chang, Keng-Ming Huang, Chia-Chen Hsu
  • Publication number: 20090258661
    Abstract: A communication apparatus is provided. A radio transceiver module receives paging indicators according to a first activation signal. A baseband processing module receives the paging indicators from the radio transceiver module and processes the paging indicators according to a second activation signal. A controller obtains corresponding system frame numbers of periodic radio frames, obtains a corresponding paging indicator position in each periodic radio frame, obtains a first and a second wake up time interval distributed within each periodic radio frame according to the corresponding paging indicator position, generates the first and the second activation signal to respectively activate the radio transceiver module and the baseband processing module during the first and the second wake up time interval, wherein both a length of the first wake up time interval and a length of the second wake up time interval are smaller than a length of a periodic radio frame.
    Type: Application
    Filed: December 5, 2008
    Publication date: October 15, 2009
    Applicant: MEDIATEK INC.
    Inventor: Jeng-Yi Tsai