Patents by Inventor Yunfeng Sun

Yunfeng Sun 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: 20200193964
    Abstract: A method and device for training an acoustic model are provided. The method comprises determining a plurality of tasks for training an acoustic model, obtaining resource occupancies of nodes participating in the training of the acoustic model, and distributing the tasks to the nodes according to the resource occupancies of the nodes and complexities of the tasks. By using computational resources distributed at multiple nodes, tasks for training an acoustic model are performed in parallel in a distributed manner, so as to improve training efficiency.
    Type: Application
    Filed: September 13, 2019
    Publication date: June 18, 2020
    Applicant: Baidu Online Network Technology (Beijing) Co., Ltd.
    Inventors: Yunfeng Li, Qingchang Hao, Yutao Gai, Chenxi Sun, Zhiping Zhou
  • Publication number: 20200153545
    Abstract: A media content-based adaptive method, device and system for Forward Error Correction (FEC) coding and decoding of a systematic code, and a medium are provided. The method includes: dividing, according to the importance of media content, source data into N types of source data packets according to priorities; generating N types of intermediate codes according to the N types of source data packets and the priorities thereof; setting, according to the N types of intermediate codes, recovery data of N types of source data according to a channel condition, and generating coded symbols of N types of systematic codes; receiving the coded symbols, and arranging and sorting the coded symbols according to decoding requirements; and decoding, according to the number of received coded symbols, intermediate codewords according to different situations, and recovering the corresponding source data packets according to the intermediate codewords.
    Type: Application
    Filed: January 10, 2020
    Publication date: May 14, 2020
    Inventors: YiIing XU, Wenjun ZHANG, Ning LIU, Yunfeng GUAN, Yanfeng WANG, Jun SUN, Zhiqian JIANG, Hao CHEN
  • Publication number: 20200008090
    Abstract: Provided are a method and device for determining indication signalling of a pilot signal for channel measurement, and method and device for feeding back CSI. The method for determining indication signalling of pilot signal for channel measurement includes: a NodeB sends DL control signalling, which includes transmission resource configuration information of a non-periodic CSI-RS, to a terminal, wherein the transmission resource configuration information of the non-periodic CSI-RS is used for determining a location of the non-periodic CSI-RS, and the non-periodic CSI-RS is used for instructing the terminal to perform channel measurement.
    Type: Application
    Filed: September 9, 2019
    Publication date: January 2, 2020
    Inventors: Yijian CHEN, Bo DAI, YuNgok LI, Yunfeng SUN, Senbao GUO
  • Patent number: 10469202
    Abstract: The invention provides an FEC (Forward error correction) mechanism based on media content. The mechanism classifies the media content, and endows it with different importance, and then changes the coding scheme according to the packets belonging to frames of different importance in combination with channel conditions and user experience, to conduct protection according to the importance of corresponding frames. By using the technical scheme of the invention, for the data congestion caused by excessive coding in the current FEC system, the media content is able to be classified and endowed with different importance, and controlled by signaling and indicating bit; different FEC coding strengths is able to be adopted; the duplication-expanding window fountain code with the unequal error protection performance is able to be further adopted, to achieve the maximum guarantee of media content quality and reduce the large amount of data caused by FEC.
    Type: Grant
    Filed: January 8, 2016
    Date of Patent: November 5, 2019
    Assignee: SHANGHAI JIAO TONG UNIVERSITY
    Inventors: Yiling Xu, Wenjun Zhang, Jun Sun, Xuguo Tang, Wei Huang, Bo Li, Yunfeng Guan, Ning Liu
  • Patent number: 10440734
    Abstract: The present disclosure discloses a scheduling configuration method, which includes that: a centralized control unit configures coordination parameters of different nodes, and distributed scheduling units in each node schedule user resources of the local nodes. The present disclosure also discloses a scheduling configuration device, which includes: a configuration unit and scheduling units, wherein the configuration unit is arranged in a centralized control unit and configured to configure coordination parameters of different nodes; and the scheduling units are arranged in each node and configured to schedule user resources of the local nodes.
    Type: Grant
    Filed: May 12, 2014
    Date of Patent: October 8, 2019
    Assignee: ZTE CORPORATION
    Inventors: Yunfeng Sun, Yu Ngok Li, Jun Xu, Junfeng Zhang, Senbao Guo
  • Patent number: 10425850
    Abstract: Provided are a method and device for determining indication signalling of a pilot signal for channel measurement, and method and device for feeding back CSI. The method for determining indication signalling of pilot signal for channel measurement includes: a NodeB sends DL control signalling, which includes transmission resource configuration information of a non-periodic CSI-RS, to a terminal, wherein the transmission resource configuration information of the non-periodic CSI-RS is used for determining a location of the non-periodic CSI-RS, and the non-periodic CSI-RS is used for instructing the terminal to perform channel measurement.
    Type: Grant
    Filed: March 6, 2014
    Date of Patent: September 24, 2019
    Assignee: XI'AN Zhongxing New Software Co., LTD.
    Inventors: Yijian Chen, Bo Dai, YuNgok Li, Yunfeng Sun, Senbao Guo
  • Patent number: 10422977
    Abstract: A reconnaissance objective lens used for an unmanned aircraft, the reconnaissance objective lens comprising a first lens (L1), a second lens (L2), a third lens (L3), a fourth lens (L4) and a fifth lens (L5) successively and coaxially arranged along the transmission direction of incident light rays. The first lens (L1) is a biconvex lens, the second lens (L2) is a biconcave lens, the third lens (L3) is a meniscus lens, the fourth lens (L4) is a meniscus lens, and the fifth lens (L5) is a meniscus lens. The first lens (L1) and the second lens (L2) are glued to one another, and the fourth lens (L4) and the fifth lens (L5) are glued to one another.
    Type: Grant
    Filed: September 5, 2014
    Date of Patent: September 24, 2019
    Assignee: HAN'S LASER TECHNOLOGY INDUSTRY GROUP CO., LTD.
    Inventors: Jiaying Li, Chaoming Zhou, Bo Sun, Yunfeng Gao
  • Patent number: 10374763
    Abstract: Provided are a parameter transmission method and device for interference coordination and an interference coordination method and device. The parameter transmission method includes that: a first Transmission Point (TP) specifies a part of resources in all available resources of the first TP; the first TP defines a set of shared parameters on the specified part of resources, wherein the set of shared parameters are used for performing interference coordination between the first TP and at least one second TP adjacent to the first TP; and the first TP sends the set of shared parameters to the at least one second TP. According to the technical solutions, space-domain Inter-Cell Interference Coordination (ICIC) may be adopted on the basis of a conventional ICIC technology to further enhance a capability of interference coordination between TPs.
    Type: Grant
    Filed: May 15, 2014
    Date of Patent: August 6, 2019
    Assignee: ZTE CORPORATION
    Inventors: Yu Ngok Li, Jun Xu, Yunfeng Sun, Senbao Guo, Junfeng Zhang
  • Patent number: 10313738
    Abstract: A dynamic time window and cache method under the heterogeneous network transmission is provided, including adding Available_Time and Asset_Size attributes of the media content in the signaling or other places for the existing signaling at a MMT, so that the client terminal gets the time when the corresponding media content is available and the size of the media content; at the same time determining the network bandwidth and the network delay of the content from the broadband to the client under the current broadband network by the client; wherein the client terminal calculates the time interval for transmitting a request for caching in advance and the size of a cache window required by the terminal through the available time of the content of a broadband source and the delay of a broadband channel.
    Type: Grant
    Filed: February 2, 2016
    Date of Patent: June 4, 2019
    Assignee: SHANGHAI JIAO TONG UNIVERSITY
    Inventors: Yiling Xu, Wenjun Zhang, Chengzhi Wang, Jun Sun, Yunfeng Guan, Dazhi He, Ning Liu
  • Patent number: 10250305
    Abstract: A method and system for indicating a transmission parameter are provided in the present invention. The method includes: when multi-user multi-input multi-output (MIMO) data are transmitted, using a newly-added indication signaling in a downlink control information format to indicate different joint encoded parameters when numbers of enabled transport blocks are different. Through adding new indication signaling in the present invention, different joint encoded parameters are indicated during the multi-user MIMO data transmission and the MIMO multi-user transmission based on the demodulation reference signal is supported.
    Type: Grant
    Filed: December 29, 2017
    Date of Patent: April 2, 2019
    Assignee: ZTE Corporation
    Inventors: Yu Ngok Li, Bo Dai, Yunfeng Sun, Jun Xu, Junfeng Zhang
  • Patent number: 10231144
    Abstract: Methods for configuring Channel State Information (CSI) feedback signalings, feeding back CSI, configuring data demodulation, data demodulating, configuring antenna port information, obtaining antenna port information, base stations and terminals are disclosed.
    Type: Grant
    Filed: August 22, 2013
    Date of Patent: March 12, 2019
    Assignee: XI'AN ZHINGXING NEW SOFTWARE CO., LTD.
    Inventors: Senbao Guo, Yu Ngok Li, Yunfeng Sun, Junfeng Zhang
  • Patent number: 10171210
    Abstract: Disclosed are a spectrum comb signaling notification and sounding reference signal transmission method and device, wherein the spectrum comb signaling notification method includes: a network side configuring and notifying a receiving side of a two-layer comb spectrum signaling, including a first spectrum comb signaling and a second spectrum comb signaling, wherein the two-layer comb spectrum signaling indicates sub-carrier positions of transmitting the sounding reference signals to the receiving side.
    Type: Grant
    Filed: December 27, 2012
    Date of Patent: January 1, 2019
    Assignee: XI'AN ZHONGXING NEW SOFTWARE CO., LTD.
    Inventors: Yuhong Gong, Yunfeng Sun, Yuxin Wang, Shupeng Li, Chenchen Zhang, Min Ren
  • Patent number: 10111124
    Abstract: Disclosed are an interference measurement method and system, and related equipment. The method includes: a network side configures Interference Measurement Resources for Demodulation (DM-IMRs) for a target data channel of a terminal, positions of the DM-IMRs on a frequency domain being determined according to a Physical Resource Block (PRB) which bears the target data channel; and the network side indicates configuration information of the DM-IMRs to the terminal to enable the terminal to perform transmission interference measurement on the target data channel. By the solutions of the present disclosure, accuracy in transmission interference measurement of the target data channel may be improved, so that improvement in demodulation/decoding performance of the target data channel at a receiving side is facilitated, and receiving performance of the target data channel may further be improved.
    Type: Grant
    Filed: April 25, 2014
    Date of Patent: October 23, 2018
    Assignee: ZTE CORPORATION
    Inventors: Yuhong Gong, Yunfeng Sun, Yu Ngok Li
  • Patent number: 10080217
    Abstract: A method of using synchronization signal as demodulation reference signal is performed at an eNB in case that the demodulation reference signal is punctured by synchronization signal in a wireless communication network. The method comprises: determining whether there is a resource element collision between the demodulation reference signal and the synchronization signal; in accordance with a determination that there is a resource element collision between the two signals: using the synchronization signal as the demodulation reference signal in a PRB pair containing the synchronization signal; and transmitting the synchronization signal as the demodulation reference signal to a UE.
    Type: Grant
    Filed: May 7, 2014
    Date of Patent: September 18, 2018
    Assignee: ZTE (USA) Inc.
    Inventors: Wenfeng Zhang, Senbao Guo, Yunfeng Sun, Shuqiang Xia
  • Patent number: 10070271
    Abstract: Disclosed are a method and system for configuring a Physical Multicast Channel (PMCH), a method and system for acquiring a PMCH configuration and a method and system for sending and receiving subframes based on the PMCH configuration. The configuration method includes the following step: a base station configuring information for the PMCH or a Multimedia Broadcast and Multicast Service (MBMS) through a high-layer signalling and/or a predefinition and/or a Multicast Control Channel (MCCH). The configured information is at least one of a transmission band, a frequency-domain location, an initial location of an Orthogonal Frequency Division Multiplexing (OFDM) symbol of the PMCH, a transmission subframe cluster of the PMCH, a number of transmission layers or used port indexes and a number of ports of the PMCH and MBMS reference signal pattern information.
    Type: Grant
    Filed: April 16, 2014
    Date of Patent: September 4, 2018
    Assignee: ZTE Corporation
    Inventors: Senbao Guo, Yunfeng Sun, Bo Dai, Junfeng Zhang
  • Patent number: 10009158
    Abstract: Provided are resource mapping and receiving methods and devices and signalling notification and acquisition methods and devices. The resource mapping method includes that: an evolved NodeB (eNB) maps a Channel State Information Reference Signal (CSI-RS) onto multiple resource elements in a manner of frequency division multiplexing and/or time division multiplexing and/or code division multiplexing; and/or the eNB maps an Interference Measure Resource (IMR) onto multiple resource elements in a manner of frequency division multiplexing and/or time division multiplexing. By the technical solution, the effects of improving measurement performance of a system, ensuring more accurate adaptive transmission and improving spectral efficiency of the system are further achieved.
    Type: Grant
    Filed: December 31, 2013
    Date of Patent: June 26, 2018
    Assignee: ZTE CORPORATION
    Inventors: Senbao Guo, Yunfeng Sun, Bo Dai, Junfeng Zhang
  • Patent number: 9998194
    Abstract: The present document relates to a method for processing channel state information (CSI), base station and terminal. The method for processing channel state information includes: a base station configuring a plurality of CSI processes for a terminal, each CSI process at least including information of a channel measurement part and information of an interference measurement part; when the base station configures corresponding CSI reference processes for partial or all CSI processes, at least limiting a rank indicator (RI) of the CSI processes for calculating a CSI report to be consistent with an RI of the CSI reference processes by configuring the CSI reference processes; and for the CSI processes configured with the CSI reference processes, the base station receiving the CSI report of the CSI processes according to the RI, or the RI and a PTI, or the RI and a PMI0 corresponding to the CSI reference processes.
    Type: Grant
    Filed: September 2, 2013
    Date of Patent: June 12, 2018
    Assignee: ZTE Corporation
    Inventors: Senbao Guo, Yu Ngok Li, Yunfeng Sun, Junfeng Zhang
  • Publication number: 20180123658
    Abstract: A method and system for indicating a transmission parameter are provided in the present invention. The method includes: when multi-user multi-input multi-output (MIMO) data are transmitted, using a newly-added indication signaling in a downlink control information format to indicate different joint encoded parameters when numbers of enabled transport blocks are different. Through adding new indication signaling in the present invention, different joint encoded parameters are indicated during the multi-user MIMO data transmission and the MIMO multi-user transmission based on the demodulation reference signal is supported.
    Type: Application
    Filed: December 29, 2017
    Publication date: May 3, 2018
    Inventors: Yu Ngok LI, Bo DAI, Yunfeng SUN, Jun XU, Junfeng ZHANG
  • Patent number: 9936483
    Abstract: Provided is a control information processing method and device. The method includes: receiving high-layer configuration signalling, wherein the high-layer configuration signalling is used for determining an indication mode of X bits in a control information format, the indication mode of X bits comprises at least one of the following: all of the X bits being used for indicating a first parameter set of at least one enabled transmission block in control information, and the X bits being used for indicating a first parameter set and a second parameter set of at least one enabled transmission block in the control information, where X is a positive integer greater than or equal to 3; and generating a control information format according to the high-layer configuration signalling.
    Type: Grant
    Filed: August 2, 2013
    Date of Patent: April 3, 2018
    Assignee: ZTE CORPORATION
    Inventors: Yu Ngok Li, Jun Xu, Senbao Guo, Yunfeng Sun, Junfeng Zhang
  • Patent number: 9930651
    Abstract: Disclosed are a downlink control information configuration and acquisition method, a base station and a terminal, wherein the base station configures a plurality of sets of receiving information for the terminal via a terminal specific high-layer signaling, and the base station indicates, to the terminal, which set in the plurality of sets of receiving information to use to perform a DMRS and/or physical downlink shared channel (PDSCH) reception by using at least one of the following information: a localized virtual resource block/distributed virtual resource block assignment (LVRB/DVRB) bit in the DCI Format 1A; a control channel mode where the DCI Format 1A is located, PDCCH and ePDCCH; an ePDCCH transmission mode where the DCI Format 1A is located, diversity transmission mode and localized transmission mode; and an ePDCCH cluster where the DCI Format 1A is located.
    Type: Grant
    Filed: August 26, 2013
    Date of Patent: March 27, 2018
    Assignee: ZTE CORPORATION
    Inventors: Senbao Guo, Yunfeng Sun, Junfeng Zhang, Dongli Chen