Patents by Inventor Yiqun Chen

Yiqun Chen 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: 20190260439
    Abstract: This application relates to the mobile communications field, and in particular, to a data processing technology in a wireless communications system. A data processing method includes: generating, by a transmitting device based on a stream of bits, one layer of modulation symbol sequence that includes N modulation vectors, any modulation vector Ai includes U modulation symbols, U?2, N?i?1, and N is a positive integer; and processing, by the transmitting device, the modulation vector Ai by using a matrix Bi to generate a modulation matrix yi, each modulation matrix includes T elements in a first dimension, T is a quantity of space domain resources, T?2, and the modulation matrix yi is used to map the stream of bits stream onto the T space domain resources. According to the solutions provided in this application, space diversity can be implemented in code domain, so that transmission reliability is improved.
    Type: Application
    Filed: May 3, 2019
    Publication date: August 22, 2019
    Inventors: Yiqun WU, Yinggang DU, Yan CHEN
  • Patent number: 10386496
    Abstract: A satellite corrections generation system receives reference receiver measurement information from a plurality of reference receivers at established locations. In accordance with the received reference receiver measurement information, and established locations of the reference receivers, the system determines narrow-lane navigation solutions for the plurality of reference receivers. The system also determines, in accordance with the narrow-lane navigation solutions, at a first update rate, an orbit correction for each satellite of a plurality of satellites; at a second update rate, a clock correction for each such satellite; and at a third update rate that is faster than the second update rate, an update to the clock correction for each such satellite. Further, the system generates navigation satellite corrections for each such satellite, including the orbit correction updated at the first update rate, and the clock correction that is updated at the third update rate.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: August 20, 2019
    Assignee: DEERE & COMPANY
    Inventors: Liwen L. Dai, Sonia Kuntz, Yiqun Chen, Yujie Zhang
  • Patent number: 10361896
    Abstract: Embodiments of the present invention provide a data communication method and a related device. The data communication method may include performing, by a first communications device, power adjustment on Q codebooks using Q power factors, to obtain power-adjusted Q codebooks, where Q is a positive integer, and the Q power factors and the Q codebooks are in a one-to-one correspondence and mapping, by the first communications device, Q to-be-transmitted bit sequences to Q codewords in the power-adjusted Q codebooks, where the Q bit sequences and the Q codewords are in a one-to-one correspondence. The method also includes obtaining, by the first communications device, a modulation symbol based on the Q codewords and sending, by the first communications device, the modulation symbol on a resource block.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: July 23, 2019
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Yiqun Wu, Shunqing Zhang, Yan Chen
  • Publication number: 20190215222
    Abstract: A data transmission method and apparatus are provided. The method includes: modulating, based on a codebook, every N information bits of to-be-transmitted data into one M-dimensional modulation symbol, where the codebook is generated based on an M-dimensional modulation constellation, the M-dimensional modulation constellation includes M modulation constellations, a constellation point in an mth modulation constellation in the M modulation constellations is obtained by mapping N information bits based on an mth information bit subset, the mth information bit subset includes information bits on some locations in the N information bits, and a union set of M information bit subsets respectively corresponding to the M modulation constellations is the N information bits, where M and N are integers greater than or equal to 2, and m is 1, 2, . . . , or M; and sending the generated M-dimensional modulation symbol. The technical solutions can reduce complexity when a modulation signal is demodulated.
    Type: Application
    Filed: March 18, 2019
    Publication date: July 11, 2019
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Meng CHENG, Yiqun WU, Yan CHEN
  • Patent number: 10338232
    Abstract: A satellite corrections generation system receives reference receiver measurement information from a plurality of reference receivers at established locations. In accordance with the received reference receiver measurement information, and established locations of the reference receivers, the system determines wide-lane navigation solutions for the plurality of reference receivers. The system also determines clusters of single-difference (SD) wide-lane ambiguity values, each cluster comprising pairs of SD wide-lane floating ambiguities for respective pairs of satellites. A satellite wide-lane bias value for each satellite of a plurality of satellites is initially determined in accordance with fractional portions of the SD wide-lane floating ambiguities in the clusters, and then periodically updated by applying SD wide-lane integer constraints in a Kalman filter.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: July 2, 2019
    Assignee: Deere & Company
    Inventors: Yujie Zhang, Liwen L. Dai, Yiqun Chen
  • Publication number: 20190173608
    Abstract: Embodiments of this application provide an information transmission method and a device, so as to improve communication reliability and reduce complexity of processing by a receive end. The method includes: determining, by a terminal device, a data processing mode, where the data processing mode includes a modulation and coding mode; processing data based on the data processing mode; determining a pilot signal based on the data processing mode; and sending the pilot signal and processed data.
    Type: Application
    Filed: February 11, 2019
    Publication date: June 6, 2019
    Inventors: Yiqun Wu, Yan Chen
  • Publication number: 20190173711
    Abstract: Embodiments of the present invention provide a resource mapping method. The method includes: obtaining a modulation symbol generated based on M code words, where M is a positive integer greater than or equal to 1; mapping the modulation symbol generated based on the M code words to a time-frequency resource in one or more mapping patterns, where the mapping pattern is a pattern of mapping every Q modulation symbols to one mapping unit, the mapping unit includes F resource units, F is a positive integer greater than or equal to 1, Q is a positive integer meeting 1?Q?F, the mapping pattern includes a sparse mapping pattern, and the sparse mapping pattern is a mapping pattern meeting F?2 and 1?Q<F; and sending the mapped modulation symbol generated based on the M code words.
    Type: Application
    Filed: January 18, 2019
    Publication date: June 6, 2019
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Meng CHENG, Yiqun WU, Lei WANG, Xiuqiang XU, Yan CHEN
  • Publication number: 20190174446
    Abstract: In accordance to embodiments, methods, devices, and systems for determining initial transmissions in grant-free transmissions are disclosed. A UE receives a resource configuration for grant-free (GF) transmissions. The resource configuration comprises a periodicity parameter (P), a repetition number (K), and a sequence of redundancy version (RV) numbers corresponding to one or more RV types. The periodicity parameter defines a period having K transmission occasions (TOs), and each of the K TOs is associated with one RV number in the sequence of RV numbers. The UE performs an initial GF transmission of data in a TO of the K TOs in the period defined by the periodicity parameter. The TO is associated with an RV number corresponding to RV0.
    Type: Application
    Filed: November 20, 2018
    Publication date: June 6, 2019
    Inventors: Liqing Zhang, Yiqun Wu, Yan Chen, Yi Wang
  • Patent number: 10191157
    Abstract: A wide-lane ambiguity and a respective satellite wide-lane bias are determined for the collected phase measurements for each satellite for assistance in narrow-lane ambiguity resolution. Satellite correction data is determined for each satellite in an orbit solution based on the collected raw phase and code measurements and determined orbital narrow-lane ambiguity and respective orbital satellite narrow-lane bias. A slow satellite clock correction is determined based on the satellite orbital correction data, the collected raw phase and code measurements, and clock narrow-lane ambiguity and respective satellite narrow-lane bias.
    Type: Grant
    Filed: September 6, 2016
    Date of Patent: January 29, 2019
    Assignee: DEERE & COMPANY
    Inventors: Liwen L. Dai, Sonia U. Kuntz, Yujie Zhang, Yiqun Chen
  • Publication number: 20170269225
    Abstract: A satellite corrections generation system receives reference receiver measurement information from a plurality of reference receivers at established locations. In accordance with the received reference receiver measurement information, and established locations of the reference receivers, the system determines wide-lane navigation solutions for the plurality of reference receivers. The system also determines clusters of single-difference (SD) wide-lane floating ambiguities. A satellite wide-lane bias value for each satellite of a plurality of satellites is initially determined in accordance with fractional portions of the SD wide-lane floating ambiguities in the clusters and over-range adjustment criteria. A set of navigation satellite corrections for each satellite, including the satellite wide-lane bias value for each satellite, is generated and transmitted to navigation receivers for use in determining locations of the navigation receivers.
    Type: Application
    Filed: March 2, 2017
    Publication date: September 21, 2017
    Inventors: Liwen L. Dai, Yiqun Chen, Yujie Zhang
  • Publication number: 20170269226
    Abstract: A satellite corrections generation system receives reference receiver measurement information from a plurality of reference receivers at established locations. In accordance with the received reference receiver measurement information, and established locations of the reference receivers, the system determines narrow-lane navigation solutions for the plurality of reference receivers. The system also determines, in accordance with the narrow-lane navigation solutions, at a first update rate, an orbit correction for each satellite of a plurality of satellites; at a second update rate, a clock correction for each such satellite; and at a third update rate that is faster than the second update rate, an update to the clock correction for each such satellite. Further, the system generates navigation satellite corrections for each such satellite, including the orbit correction updated at the first update rate, and the clock correction that is updated at the third update rate.
    Type: Application
    Filed: March 2, 2017
    Publication date: September 21, 2017
    Inventors: Liwen L. Dai, Sonia Kuntz, Yiqun Chen, Yujie Zhang
  • Publication number: 20170269222
    Abstract: A wide-lane ambiguity and a respective satellite wide-lane bias are determined for the collected phase measurements for each satellite for assistance in narrow-lane ambiguity resolution. Satellite correction data is determined for each satellite in an orbit solution based on the collected raw phase and code measurements and determined orbital narrow-lane ambiguity and respective orbital satellite narrow-lane bias. A slow satellite clock correction is determined based on the satellite orbital correction data, the collected raw phase and code measurements, and clock narrow-lane ambiguity and respective satellite narrow-lane bias.
    Type: Application
    Filed: September 6, 2016
    Publication date: September 21, 2017
    Inventors: Liwen L. Dai, Sonia U. Kuntz, Yujie Zhang, Yiqun Chen
  • Publication number: 20170269224
    Abstract: A satellite corrections generation system receives reference receiver measurement information from a plurality of reference receivers at established locations. In accordance with the received reference receiver measurement information, and established locations of the reference receivers, the system determines narrow-lane navigation solutions for the plurality of reference receivers. The system also determines clusters of single-difference (SD) narrow-lane floating ambiguities, each cluster comprising pairs of SD narrow-lane floating ambiguities for respective pairs of satellites. A satellite narrow-lane bias value for each satellite of a plurality of satellites is initially determined in accordance with fractional portions of the SD narrow-lane floating ambiguities in the clusters, and then periodically updated by a Kalman filter.
    Type: Application
    Filed: March 2, 2017
    Publication date: September 21, 2017
    Inventors: Yujie Zhang, Liwen L. Dai, Yiqun Chen
  • Publication number: 20170269223
    Abstract: A satellite corrections generation system receives reference receiver measurement information from a plurality of reference receivers at established locations. In accordance with the received reference receiver measurement information, and established locations of the reference receivers, the system determines wide-lane navigation solutions for the plurality of reference receivers. The system also determines clusters of single-difference (SD) wide-lane ambiguity values, each cluster comprising pairs of SD wide-lane floating ambiguities for respective pairs of satellites. A satellite wide-lane bias value for each satellite of a plurality of satellites is initially determined in accordance with fractional portions of the SD wide-lane floating ambiguities in the clusters, and then periodically updated by applying SD wide-lane integer constraints in a Kalman filter.
    Type: Application
    Filed: March 2, 2017
    Publication date: September 21, 2017
    Inventors: Yujie Zhang, Liwen L. Dai, Yiqun Chen
  • Publication number: 20170212247
    Abstract: A moveable object determines a preliminary position for the moveable object using received satellite navigation signals and satellite orbit correction information and satellite clock correction information. A position correction is determined by identifying which cell, of a predefined set of geographical cells, corresponds to the determined preliminary position, and obtaining from a database, pre-computed tectonic terrestrial plate position information for the identified cell. Based on the information for the identified cell, a tectonic terrestrial plate, corresponding to the determined preliminary position of the moveable object is identified.
    Type: Application
    Filed: October 4, 2016
    Publication date: July 27, 2017
    Inventors: Yiqun Chen, Liwen L. Dai
  • Patent number: 9263273
    Abstract: A method for manufacturing a semiconductor device may include the following steps: preparing a semiconductor substrate that includes a first substrate region, a second substrate region, and a third substrate region; providing a first mask that overlaps the semiconductor substrate; etching, using the first mask, the first semiconductor substrate to form a trench in each of the substrate regions; providing a second mask that overlaps the semiconductor substrate and includes three openings corresponding to the substrate regions; performing first ion implantation through the three openings to form a P-doped region in each of the substrate regions; performing second ion implantation through the three openings to form an N-doped region in each of the substrate regions; and performing third ion implantation through the three openings to form another N-doped region in each of the substrate regions; and forming an isolation member in each of the trenches.
    Type: Grant
    Filed: February 19, 2015
    Date of Patent: February 16, 2016
    Assignee: SEMICONDUCTOR MANUFACTURING INTERNATIONAL (SHANGHAI) CORPORATION
    Inventors: Haiqiang Wang, Xianyong Pu, Yong Cheng, Zonggao Chen, Yiqun Chen
  • Publication number: 20150262820
    Abstract: A method for manufacturing a semiconductor device may include the following steps: preparing a semiconductor substrate that includes a first substrate region, a second substrate region, and a third substrate region; providing a first mask that overlaps the semiconductor substrate; etching, using the first mask, the first semiconductor substrate to form a trench in each of the substrate regions; providing a second mask that overlaps the semiconductor substrate and includes three openings corresponding to the substrate regions; performing first ion implantation through the three openings to form a P-doped region in each of the substrate regions; performing second ion implantation through the three openings to form an N-doped region in each of the substrate regions; and performing third ion implantation through the three openings to form another N-doped region in each of the substrate regions; and forming an isolation member in each of the trenches.
    Type: Application
    Filed: February 19, 2015
    Publication date: September 17, 2015
    Inventors: Haiqiang Wang, Xianyong Pu, Yong Cheng, Zonggao Chen, Yiqun Chen
  • Publication number: 20150179571
    Abstract: A method is provided for fabricating a metal interconnection structure. The method includes providing a semiconductor substrate having an active region and an isolation structure surrounding the active region; and forming a metal layer on a surface of the semiconductor substrate. The method also includes forming a metal silicide layer on the active region by a reaction of the metal layer and material of the active regions; and forming an inter metal connection layer electrically connecting with the active regions on the isolation structure. Further, the method includes forming a dielectric layer covering the metal silicide layer, the isolation structure and the inter metal connection layer on the semiconductor substrate; and forming a metal contact via electrically connecting with the active region through the inter metal connection layer in the dielectric layer.
    Type: Application
    Filed: August 14, 2014
    Publication date: June 25, 2015
    Inventors: XIANYONG PU, ZONGGAO CHEN, GANGNING WANG, YIQUN CHEN
  • Publication number: 20150041948
    Abstract: Semiconductor devices and fabrication methods are disclosed. A mask layer having an opening is formed on a semiconductor substrate. The semiconductor substrate is etched along the opening of the mask layer to form a trench therein. The mask layer is laterally etched from the opening of the mask layer along a top surface of the semiconductor substrate to expose a surface portion of the semiconductor substrate on each side of the opening. A liner oxide layer is formed by a thermal oxidation process on interior surface of the trench and on the exposed surface portion of the semiconductor substrate. The thermal oxidation process is controlled such that an upper corner between the top surface of the semiconductor substrate and the trench is rounded after the liner oxide layer is formed. An insulation layer is formed on the liner oxide layer and fills the trench.
    Type: Application
    Filed: July 29, 2014
    Publication date: February 12, 2015
    Inventors: XIANYONG PU, YIQUN CHEN, ZONGGAO CHEN
  • Patent number: 8456353
    Abstract: A satellite clock error is determined for each navigation satellite based on the pseudo-range code measurements, the carrier phase measurements, and broadcast satellite clock errors provided by a receiver network. Differences are determined between the computed satellite clock errors and the broadcast clock errors for each satellite. For each constellation, a clock reference satellite is selected from among the navigation satellites, where the clock reference satellite has the median value of clock error difference for that satellite constellation. A correction is determined for the broadcast clock error by applying a function of the reference satellite's clock error to the broadcast clock error for each satellite in the one or more constellations.
    Type: Grant
    Filed: May 17, 2011
    Date of Patent: June 4, 2013
    Assignee: Deere & Company
    Inventors: Liwen L. Dai, Michael A. Zeitzew, Yiqun Chen, Yujie Zhang