Patents by Inventor Fang-Chen Cheng

Fang-Chen Cheng 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: 20210126754
    Abstract: Disclosed are a method and device for transmitting a positioning reference signal. In the method, a base station maps, according to configuration information of a PRS, a PRS sequence to a time-frequency resource for sending a PRS; and the base station sends the configuration information of the PRS to a terminal, and sends the mapped PRS on the time-frequency resource for sending a PRS.
    Type: Application
    Filed: March 28, 2019
    Publication date: April 29, 2021
    Inventors: Ren Da, Fang-Chen CHENG, Hui LI, Qiubin GAO, Xueyuan GAO
  • Publication number: 20210120583
    Abstract: Disclosed are a data transmission method and device, and a signal feedback method and device. The data transmission method comprises: after executing an LBT operation in a direction corresponding to at least one beam, a base station sending to a terminal a channel occupation request signal to request channel occupation; and after receiving a signal indicating that a channel is allowed to be occupied, the base station transmitting data on the beam sending the channel occupation request signal. The signal feedback method comprises: the terminal receiving the channel occupation request signal sent to the terminal by the base station on the at least one beam, wherein the channel occupation request signal is a signal for requesting channel occupation; and after correctly receiving the channel occupation request signal, the terminal feeding back, on the beam on which the signal is received, to the base station the signal indicating that the channel is allowed to be occupied.
    Type: Application
    Filed: May 7, 2019
    Publication date: April 22, 2021
    Inventors: Jiaqing WANG, Fang-Chen CHENG
  • Publication number: 20210111939
    Abstract: Disclosed in the present application is a method and a device of estimating a timing location. The method comprised: for each preamble subsequence, acquiring a detection window in which a peak value of a correlation value power of each preamble subsequence is located; accumulating the correlation value powers of the corresponding locations in the acquired detection window of each preamble subsequence, to obtain a cumulative sum of the correlation value powers corresponding to each location, wherein, in the accumulation, the correlation value powers of the preamble subsequence are within detection window in which peak values of respective correlation value powers are located; determining, according to the cumulative sum of the correlation value powers, peak power and noise power; and estimating, according to the peak power and the noise power, a timing location. The present application can solve the problem of a current M-stage preamble sequence solution.
    Type: Application
    Filed: March 20, 2018
    Publication date: April 15, 2021
    Applicant: CHINA ACADEMY OF TELECOMMUNITIONS TECHNOLOGY
    Inventors: Bin REN, Ren DA, Fang-Chen CHENG
  • Patent number: 10980013
    Abstract: Disclosed in the present application are a data transmission method and a device, comprising: dividing a time unit into DL areas, a time unit including at least two DL areas; notifying a terminal of the divided DL areas by means of configuration signaling. The terminal receiving the configuration signaling; according to said configuration signaling, determining DL areas into which a time unit is divided. Using the present application, defining at least two DL detection areas in a time unit, a terminal detects a downlink transmission in each detection area, and, when one is detected, performs ACK/NACK feedback in an uplink area corresponding to said downlink area. In the present invention, each downlink area has a defined feedback and scheduling relationship, respectively, by means of dividing a time unit into multiple downlink areas, thereby increasing scheduling flexibility and system resource utilization.
    Type: Grant
    Filed: August 22, 2017
    Date of Patent: April 13, 2021
    Assignee: China Academy of Telecommunications Technology
    Inventors: Xuejuan Gao, Xueming Pan, Fang-Chen Cheng
  • Patent number: 10973031
    Abstract: Disclosed are a resource configuration method and device, and a computer storage medium, for enabling configuration of a remaining minimum system information control resource set to be more flexibly when the remaining minimum system information control resource set and an associated synchronous information block occupy a same beam by means of frequency division multiplexing, so as to be applicable to more application scenarios.
    Type: Grant
    Filed: October 24, 2018
    Date of Patent: April 6, 2021
    Assignee: China Academy of Telecommunications Technology
    Inventors: Ren Da, Tie Li, Ekpenyong Tony, Fang-Chen Cheng, Qiubin Gao, Bin Ren, Zheng Zhao
  • Patent number: 10911202
    Abstract: Disclosed are an uplink and downlink transmission resource allocation method and device. In this application, a first channel is transmitted on a specified time-frequency resource within a first channel transmitting period according to the first channel transmitting period. The first channel is at least used for notifying allocation information of an uplink transmission resource and a downlink transmission resource within the first channel transmitting period or an effective time period of the first channel, so that dynamic partitioning and notification of the uplink transmission resource and the downlink transmission resource are achieved.
    Type: Grant
    Filed: January 17, 2017
    Date of Patent: February 2, 2021
    Assignee: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY
    Inventors: Xuejuan Gao, Fang-chen Cheng, Xueming Pan, Shaohui Sun
  • Publication number: 20210007056
    Abstract: Embodiments of the present application provide a method and a device for determining a power control offset for a PUCCH, for resolving the issue in which existing methods for determining a power control offset for a PUCCH are incompatible with new radio communications systems. The method comprises: determining the number of bits, OUCI, of first uplink control information (UCI) required to be transmitted on a PUCCH, and determining the number, NRE, of resource elements (RE) carrying the first UCI in the PUCCH; and determining, according to formula (I), an offset ?PUCCH_TF,c(i) for calculation of power control of the PUCCH, and g(OUCI/NRE) is a function having OUCI and NRE as variables thereof.
    Type: Application
    Filed: December 5, 2018
    Publication date: January 7, 2021
    Inventors: Di ZHANG, Fang-Chen CHENG, Xiangli LIN
  • Publication number: 20200396122
    Abstract: Disclosed are a resource configuration method and apparatus, and a computer storage medium, being used for enabling, when a remaining minimum system information control resource set and an associated synchronization information block are in a time division multiplexing mode, the configuration of the remaining minimum system information control resource set to be more flexible, being applicable to more application scenarios. The resource configuration method comprises: determining that a remaining minimum system information control resource set (RMSI CORESET) and an associated synchronization information block (SS Block) occupy different symbols for transmission in a time division multiplexing mode; and determining the configuration parameters of the RMSI CORESET and the associated SS Block, the remaining minimum system information control resource sets associated with the SS Blocks in each SS Block burst set having identical configuration parameters.
    Type: Application
    Filed: October 24, 2018
    Publication date: December 17, 2020
    Applicant: China Academy of Telecommunications Technology
    Inventors: Ren Da, Tie Li, Ekpenyong Tony, Fang-Chen Cheng, Qiubin Gao, Bin REN, Zheng Zhao
  • Publication number: 20200389249
    Abstract: Disclosed are an encoding method and apparatus, an electronic device and a storage medium, wherein same are used for solving the problem in the prior art of inflexibility of the segmentation of a sequence to be encoded. The method comprises: according to the length and a transmission code rate of a sequence to be encoded, determining the target number of segments of the sequence to be encoded; according to the target number, segmenting the sequence to be encoded; and encoding each sub-sequence after the segmentation, and cascading same after encoding. In the embodiments of the present application, according to the length and a transmission code rate of a sequence to be encoded, the target number of segments of the sequence to be encoded is determined, and according to the target number, the sequence to be encoded is segmented. The sequence to be encoded is flexibly segmented, thus improving the encoding performance.
    Type: Application
    Filed: August 29, 2018
    Publication date: December 10, 2020
    Inventors: Jiaqing WANG, Fang-Chen CHENG, Di ZHANG, Shaohui SUN
  • Publication number: 20200383139
    Abstract: A method and device for sending and receiving a preamble sequence of a physical random access channel, comprising: scrambling a preamble subsequence and then sending, the preamble subsequence being scrambled according to a cyclic shift value of a preamble subsequence sent in the previous stage; performing a descrambling operation according to a cyclic shift value of a preamble subsequence received in the previous stage during reception; and determining a preamble sub-sequence detected after descrambling as a preamble sub-sequence received in the current stage, where the received preamble sub-sequence in the current stage and the received preamble sub-sequence in the previous stage belong to the same preamble sequence.
    Type: Application
    Filed: March 15, 2018
    Publication date: December 3, 2020
    Applicant: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY
    Inventors: Bin REN, Ren DA, Fang-Chen CHENG, Ekpenyong TONY
  • Patent number: 10849155
    Abstract: The present invention relates to the field of communications, and in particular, to a method and an apparatus for transmitting uplink control information. The method comprises: a terminal determines a resource for transmitting uplink control information, wherein the resource comprises a time domain occupation resource and a frequency domain occupation resource, and duration of the time domain occupation resource is less than 1 ms; and then the terminal transmits the uplink control information on the determined resource. In this way, a solution for uplink control information transmission is provided for the shortened TTI, normal feedback of the uplink control information is supported, and the system performance is ensured.
    Type: Grant
    Filed: January 18, 2017
    Date of Patent: November 24, 2020
    Assignee: China Academy of Telecommunications Technology
    Inventors: Xuejuan Gao, Qianqian Si, Xueming Pan, Fang-Chen Cheng
  • Publication number: 20200359384
    Abstract: Disclosed are a resource configuration method and device, and a computer storage medium, for enabling configuration of a remaining minimum system information control resource set to be more flexibly when the remaining minimum system information control resource set and an associated synchronous information block occupy a same beam by means of frequency division multiplexing, so as to be applicable to more application scenarios.
    Type: Application
    Filed: October 24, 2018
    Publication date: November 12, 2020
    Applicant: China Academy of Telecommunications Technology
    Inventors: Ren Da, Tie Li, Ekpenyong Tony, Fang-Chen Cheng, Qiubin Gao, Bin REN, Zheng Zhao
  • Patent number: 10827473
    Abstract: The present invention relates to the technical field of communications, and relates in particular to a downlink control information (DCI) transmission method and device, the DCI transmission method comprising: confirming information used indicating a bit number of a first indication field within DCI, the information comprising high layer signalling configuration information or information for whether to configure an unauthorized member carrier; according to the high layer signalling configuration information or the information for whether to configure an unauthorized member carrier, determining the bit number of the first indication field included in the DCI.
    Type: Grant
    Filed: January 11, 2017
    Date of Patent: November 3, 2020
    Assignee: China Academy of Telecommunications Technology
    Inventors: Xuejuan Gao, Xueming Pan, Fang-Chen Cheng
  • Publication number: 20200344703
    Abstract: The present application discloses an association method, instruction method, and device for a synchronization block and a paging-scheduling signaling message. In the present application, a terminal performs beam sweeping on received synchronization blocks to obtain a target synchronization block; and the terminal, according to a correspondence between a synchronization block and a paging-scheduling signaling message, determines a paging-scheduling signaling message corresponding to the target synchronization block.
    Type: Application
    Filed: August 28, 2018
    Publication date: October 29, 2020
    Applicant: China Academy of Telecommunications Technology
    Inventors: Zheng Zhao, Ren Da, Fang-Chen Cheng, Qiubin Gao, Bin Ren, Tie Li
  • Patent number: 10798686
    Abstract: The present application provides a frequency domain spreading and de-spreading method and apparatus. In embodiments of the present application, user equipment acquires indication information of an orthogonal sequence used by a transmission physical uplink control channel (PUCCH); the user equipment spreads, according to an orthogonal sequence corresponding to the indication information of the orthogonal sequence, a frequency domain for uplink control information borne by the PUCCH; and the user equipment transmits, over a frequency domain resource corresponding to the PUCCH, the uplink control information of which the frequency domain is spread. The present application can spread a frequency domain for uplink control information borne by a PUCCH.
    Type: Grant
    Filed: August 30, 2016
    Date of Patent: October 6, 2020
    Assignee: CHINA ACADEMY OF TELECOMUNICATIONS TECHNOLOGY
    Inventors: Xuejuan Gao, Fang-Chen Cheng
  • Publication number: 20200296751
    Abstract: The present application discloses a processing method, device, terminal and apparatus for partial bandwidth deactivation timer, including: receiving an instruction related to the uplink transmission sent by the network side; starting or restarting the partial bandwidth deactivation timer according to the received instruction. The present application clarifies the specific working mechanism of the partial bandwidth deactivation timer, so that the terminal and the base station can perform signaling and data transmission on the correct resources, thereby avoiding signaling and data transmission errors and resource waste.
    Type: Application
    Filed: October 9, 2018
    Publication date: September 17, 2020
    Inventors: Li CHEN, Bertrand PIERRE, Fang-Chen CHENG
  • Patent number: 10772133
    Abstract: Disclosed are a method and device for determining a preamble sequence of a physical random access channel. The method includes in a previous stage, receiving respective preamble sub-sequences, and determining instances of time at which the respective preamble sub-sequences are detected in a detection window; in a current stage, receiving respective preamble sub-sequences, and determining instances of time at which the respective preamble sub-sequences are detected in the detection window; and determining preamble sub-sequences belonging to a same preamble sequence according to the instances of time at which the respective preamble sub-sequences are detected in the current stage, and the instances of time at which the respective preamble sub-sequences are detected in the previous stage.
    Type: Grant
    Filed: February 22, 2018
    Date of Patent: September 8, 2020
    Assignee: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY
    Inventors: Bin Ren, Ren Da, Fang-Chen Cheng, Ekpenyong Tony
  • Patent number: 10771224
    Abstract: Disclosed in the present application are a method and device for transmitting feedback information, used to define new feedback timing for downlink data using a dynamic and variable TTI length during transmission, so as to ensure that ACK/NACK feedback information of downlink data is fed back on an earliest uplink transmission resource meeting a processing delay requirement, thereby reducing system delay.
    Type: Grant
    Filed: February 8, 2017
    Date of Patent: September 8, 2020
    Assignee: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY
    Inventors: Xuejuan Gao, Xueming Pan, Fang-Chen Cheng, Qianqian Si
  • Patent number: 10772055
    Abstract: A first base station synchronizes with one or more second base stations by transmitting, from the first base station, a first timing reference signal and receiving, at the first base station, one or more second timing reference signals transmitted by the one or more second base stations. The method also includes determining one or more first timing offsets between the first base station and the one or more second base stations based on the one or more second timing reference signals. The method further includes adjusting a timing associated with the first base station based on the one or more first timing offsets and one or more second timing offsets determined based on the first timing reference signal.
    Type: Grant
    Filed: April 8, 2015
    Date of Patent: September 8, 2020
    Assignee: Alcatel Lucent
    Inventors: Ren Da, Fang-Chen Cheng
  • Publication number: 20200280921
    Abstract: Disclosed in the present invention are a method, equipment and an apparatus for indicator and downlink control channel detection, comprising: determining data which must be transmitted to a terminal in one or more transmission time intervals by means of a downlink control channel; a base station sending a command to the terminal, used to indicate that the terminal determine according to the command whether it is necessary to detect a downlink control channel in the one or more transmission time intervals. On the terminal, determining according to the command whether it is necessary to detect a downlink control channel in the one or more transmission time intervals. After using the present invention, when a base station has not scheduled a terminal, this objectively causes a terminal side to not have excess power consumption, and lowers terminal-side power consumption.
    Type: Application
    Filed: August 7, 2018
    Publication date: September 3, 2020
    Inventors: Lei WANG, Fang-Chen CHENG