Patents by Inventor Jianzhong Zhang

Jianzhong Zhang 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: 20200412092
    Abstract: An InP-based monolithic integrated chaotic semiconductor laser chip capable of feeding back randomly diffused light, being composed of six regions: a left DFB semiconductor laser, a bidirectional SOA, a left passive optical waveguide region, a doped passive optical waveguide region, a right passive optical waveguide region, and a right DFB semiconductor laser, specifically including: an N+ electrode layer, an N-type substrate, an InGaAsP lower confinement layer, an undoped InGaAsP multiple quantum well active region layer, doped particles, distributed feedback Bragg gratings, an InGaAsP upper confinement layer, a P-type heavily doped InP cover layer, a P-type heavily doped InGaAs contact layer, a P+ electrode layer, a light-emitting region, and isolation grooves. It effectively solves problems of bulky volume of the existing chaotic laser source, the time-delay signature of chaotic laser, narrow bandwidth, and low coupling efficiency of the light and the optical waveguide.
    Type: Application
    Filed: August 27, 2018
    Publication date: December 31, 2020
    Applicant: Taiyuan University Of Technology
    Inventors: Mingjiang Zhang, Jianzhong Zhang, Ya'nan Niu, Yi Liu, Tong Zhao, Lijun Qiao, Anbang Wang, Yuncai Wang
  • Patent number: 10868605
    Abstract: A method of a base station (BS) for channel state information (CSI) estimation in a wireless communication system is provided. The method of BS comprises: receiving, from a user equipment (UE), a sounding reference signal (SRS) for the CSI estimation; determining whether the received SRS is measurable for the CSI estimation; initializing a set of uplink parameters based on a result of the determination; updating the set of uplink parameters based on SRS history stored in a buffer; and performing, using a channel prediction model and channel reciprocity, the downlink CSI estimation based on the updated parameters.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: December 15, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Rui Wang, Junmo Sung, Jianzhong Zhang, Young-Han Nam, Shouvik Ganguly
  • Publication number: 20200382361
    Abstract: A method for discovering and diagnosing network anomalies. The method includes receiving key performance indicator (KPI) data and alarm data. The method includes extracting features based on samples obtained by discretizing the KPI data and the alarm data. The method includes generating a set of rules based on the features. The method includes identifying a sample as a normal sample or an anomaly sample. In response to identifying the sample as the anomaly sample, the method includes identifying a first rule that corresponds to the sample, wherein the first rule indicates symptoms and root causes of an anomaly included in the sample. The method further includes applying the root causes to derive a root cause explanation of the anomaly and performing a corrective action to resolve the anomaly based on the first rule.
    Type: Application
    Filed: May 29, 2020
    Publication date: December 3, 2020
    Inventors: Vikram Chandrasekhar, Yongseok Park, Shan Jin, Pranav Madadi, Eric Johnson, Jianzhong Zhang, Russell Ford
  • Patent number: 10855434
    Abstract: For a base station or a User Equipment (UE) in communication with each other, the UE is configured by the base station for operation with an adapted Time Division Duplex (TDD) UpLink-DownLink (UL-DL) configuration. The base station configures a UE with resources for obtaining channel and interference measurements in two sets of Transmission Time Intervals (TTIs) and the UE obtains a Channel State Information (CSI) from the channel and interference measurements in the two sets of TTIs.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: December 1, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Aris Papasakellariou, Jianzhong Zhang
  • Publication number: 20200336187
    Abstract: A base station, method, and computer-readable storage medium for channel state information (CSI) acquisition. The base station includes a transceiver configured to transmit a first, unprecoded channel state information reference signal (CSI-RS) on a first antenna dimension; receive a first CSI report on the first antenna dimension; transmit a second, precoded CSI-RS on a second antenna dimension; and receive a second CSI report on the second antenna dimension. The first CSI report includes a precoding matrix index (PMI), a rank indicator (RI), and channel quality indicator (CQI) for the first antenna dimension; and the second CSI report comprises a PMI, a RI, and a CQI for the second antenna dimension. The base station also includes a processor operably connected to the transceiver, the processor configured to generate a downlink (DL) CSI for multi-user multi-input, multi-output (MU-MIMO) scheduling and precoding based on the first CSI report and the second CSI report.
    Type: Application
    Filed: February 20, 2020
    Publication date: October 22, 2020
    Inventors: Yeqing Hu, Ahmed Atef Ibrahim, Jianzhong Zhang
  • Patent number: 10812225
    Abstract: To perform a random access procedure on licensed and unlicensed carriers, a user equipment may receive a system information block (SIB) on a downlink carrier in a first carrier frequency, where the SIB includes configuration information for a first uplink carrier and a second uplink carrier, and transmit a physical random access channel (PRACH) either on the first uplink carrier or on the second uplink carrier. A response to the transmitted PRACH received by the user equipment on a downlink carrier may schedule transmission of data channel. The SIB preferably includes configuration information for determining a power for the PRACH transmission on the first and second uplink carriers. The frequency band of the downlink carrier is same as the frequency band of the first uplink carrier and is different than that of the second uplink carrier, which has a frequency lower than the frequency of the first UL carrier.
    Type: Grant
    Filed: August 6, 2018
    Date of Patent: October 20, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Aris Papasakellariou, Jianzhong Zhang, Boon Loong Ng
  • Patent number: 10805886
    Abstract: A mobile station for use in a wireless network that operates according to the Long-Term Evolution Advanced (LTE-A) standard is configured to transmit an aperiodic sounding reference signal (SRS) to a base station in response to a triggering grant received from the base station. The bandwidth on which the mobile station transmits the aperiodic SRS depends on a type of the triggering grant. The type of the triggering grant is one of a downlink grant, an uplink multiple-input, multiple-output (MIMO) grant, and an uplink single-input, multiple-output (SIMO) grant.
    Type: Grant
    Filed: July 17, 2017
    Date of Patent: October 13, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Young-Han Nam, Jianzhong Zhang
  • Patent number: 10803893
    Abstract: A method for scheduling data transfer commands between a first actuator or a second actuator across an interface is disclosed. The method includes balancing data transfer commands between the first actuator and the second actuator by applying a first rule for read commands and a second rule for write commands.
    Type: Grant
    Filed: June 3, 2019
    Date of Patent: October 13, 2020
    Assignee: Seagate Technology LLC
    Inventors: JianZhong Zhang, Mark A. Gaertner
  • Patent number: 10797913
    Abstract: Reciprocity base frequency division duplex (FDD) multiple-input-multiple-output (MIMO) downlink (DL) channel Channel-State Information (CSI) acquisition is provided. A base station (BS) includes a transceiver configured to measure uplink (UL) sounding reference signals (SRSs) at a UL carrier frequency, using two polarization components of an antenna array of the BS, and a processor configured to determine a quantity of propagation paths between the BS and a user equipment (UE), for each of the determined propagation paths, extract propagation parameters from the UL SRS measurements, for each of the determined propagation paths, predict a downlink (DL) channel based on the extracted propagation parameters and a DL carrier frequency, and generate a precoding channel matrix for the UE by summing the predicted DL channels for each of the determined propagation paths and for each of the two polarization components of the antenna array of the BS.
    Type: Grant
    Filed: January 18, 2019
    Date of Patent: October 6, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yeqing Hu, Rui Wang, Boon Loong Ng, Young-Han Nam, Jin Yuan, Gary Xu, Jianzhong Zhang
  • Publication number: 20200304182
    Abstract: A base station for generating multi-user precoders. The base station includes a transceiver configured to receive sounding reference signals (SRSs) from a set of user equipments (UEs), and a processor configured to select, for one or more UEs in the set of UEs, one or more codewords from an uplink codebook based on a correlation between the one or more codewords and the one or more SRSs; determine, using a composite downlink codebook, downlink codewords for the selected uplink codewords, respectively, the composite downlink codebook mapping uplink codewords to downlink codewords based on steering angles derived from the uplink codewords; transmit a set of pre-coded channel state information reference signals (CSI-RSs) to the one or more UEs, wherein the pre-coded CSI-RSs are pre-coded based on the determined downlink codewords; and identify a downlink channel matrix based on CSI feedback from the one or more UEs and the pre-coded CSI-RSs.
    Type: Application
    Filed: February 26, 2020
    Publication date: September 24, 2020
    Inventors: Ahmed Atef Ibrahim, Yeqing Hu, Young-Han Nam, Jianzhong Zhang
  • Patent number: 10764766
    Abstract: A method of a user equipment (UE) in a wireless communication system includes identifying a radiation pattern of each beam in a set of beams to be used for communicating with a base station (BS), identifying a database including a beam index of each beam in the set of beams, identifying a beam sweeping sequence based on at least one of the database, the radiation pattern of each beam, or a UE-specific condition, and sweeping each beam in the set of beams based on the beam sweeping sequence to radiate signal power of each beam through a transceiver.
    Type: Grant
    Filed: January 15, 2019
    Date of Patent: September 1, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jianhua Mo, Prasad P. Netalkar, Boon Loong Ng, Jianzhong Zhang
  • Patent number: 10757657
    Abstract: A mobile station for use in a wireless network that operates according to the Long-Term Evolution Advanced (LTE-A) standard is configured to transmit an aperiodic sounding reference signal (SRS) to a base station in response to a triggering grant received from the base station. The bandwidth on which the mobile station transmits the aperiodic SRS depends on a type of the triggering grant. The type of the triggering grant is one of a downlink grant, an uplink multiple-input, multiple-output (MIMO) grant, and an uplink single-input, multiple-output (SIMO) grant.
    Type: Grant
    Filed: July 17, 2017
    Date of Patent: August 25, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Young-Han Nam, Jianzhong Zhang
  • Publication number: 20200262619
    Abstract: The present invention relates to and provides a glassware lid and a glassware with same. After food is heated, the lid is covered; a first end of the air hole sliding lid is turned so that the air hole is communicated with outside atmosphere to avoid forming a vacuum state inside; when the lid needs to be taken out, the first sliding parts and the second sliding parts continue to slide to separate the hoop from the glassware body, which is convenient to operate. The structure is compact and the arrangement is reasonable.
    Type: Application
    Filed: May 6, 2020
    Publication date: August 20, 2020
    Inventors: David Prieto de Sicart, Marc Zamora Salvador, Jianzhong Zhang, Xiaojia Liu
  • Patent number: 10750434
    Abstract: Methods and apparatuses indicate and identify quasi co-located reference signal ports. A method of identifying by a UE includes identifying, from downlink control information, a CSI-RS port that is quasi co-located with a DM-RS port assigned to the UE. The method includes identifying large scale properties for the assigned DM-RS port based on large scale properties for the CSI-RS port. The method includes performing channel estimation and/or time/frequency synchronization using the identified large scale properties for the DM-RS port. Another method for identifying by a UE includes identifying, from downlink control information, a CRS port that is quasi co-located with a CSI-RS port configured for the UE. The method includes identifying large scale properties for the configured CSI-RS port based on large scale properties for the CRS port. The method includes performing channel estimation and/or time/frequency synchronization using the identified large scale properties for the CSI-RS port.
    Type: Grant
    Filed: October 17, 2019
    Date of Patent: August 18, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Boon Loong Ng, Krishna Sayana, Young-Han Nam, Jianzhong Zhang
  • Patent number: 10735066
    Abstract: A method of a user equipment (UE) in a wireless communication system is provided. The method comprises identifying E-field data of each antenna of the UE to be used for transmitting and receiving data, generating, based on the E-field data, a set of codewords including a first and second upper bounds, the set of codewords corresponding to candidate beams of each antenna, selecting at least one codeword from the set of codewords based on a performance criteria, configuring a codebook to be used for each antenna by adding the at least one codeword into the codebook, determining whether the codebook including the at least one codeword satisfies a condition to stop adding another codeword to the codebook, and applying the configured codebook for use in transmitting or receiving the data at each antenna based on whether the condition is satisfied.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: August 4, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jianhua Mo, Pengda Huang, Boon Loong Ng, Jianzhong Zhang, SangHyun Chang
  • Patent number: 10732148
    Abstract: A double-robot system for detecting a flaw of a rim or a spoke includes a movable cart, a lifting platform, a lifting rotating mechanism, and robots. The lifting platform is movably connected to the movable cart in a vertical direction. The lifting rotating mechanism is disposed on the lifting platform. A wheel lifting arm is disposed on each of the left side and the right side of the lifting rotating mechanism. The wheel lifting arms are used for lap joint on a rail where a wheel in detection is located. One robot is fixedly connected to each of the front side and the rear side of the lifting rotating mechanism. Each robot is provided with a tread carrier. The lifting rotating mechanism is also provided with two inner carriers.
    Type: Grant
    Filed: August 23, 2017
    Date of Patent: August 4, 2020
    Assignee: BEIJING LEAD TIME SCIENCE & TECHNOLOGY CO., LTD.
    Inventors: Yu Zhang, Li Wang, Xiaorong Gao, Quanke Zhao, Zeyong Wang, Jianping Peng, Kai Yang, Chaoyong Peng, Xiang Zhang, Jianzhong Wen, You Tan, Xingyu Zhang, Yongjun Luo, Tiandou Zhang, Xiaolong Liao
  • Patent number: 10708852
    Abstract: Methods and apparatuses indicate and identify quasi co-located reference signal ports. A method of identifying by a UE includes identifying, from downlink control information, a CSI-RS port that is quasi co-located with a DM-RS port assigned to the UE. The method includes identifying large scale properties for the assigned DM-RS port based on large scale properties for the CSI-RS port. The method includes performing channel estimation and/or time/frequency synchronization using the identified large scale properties for the DM-RS port. Another method for identifying by a UE includes identifying, from downlink control information, a CRS port that is quasi co-located with a CSI-RS port configured for the UE. The method includes identifying large scale properties for the configured CSI-RS port based on large scale properties for the CRS port. The method includes performing channel estimation and/or time/frequency synchronization using the identified large scale properties for the CSI-RS port.
    Type: Grant
    Filed: September 24, 2018
    Date of Patent: July 7, 2020
    Inventors: Boon Loong Ng, Krishna Sayana, Young-Han Nam, Jianzhong Zhang
  • Publication number: 20200203919
    Abstract: A monolithic integrated semiconductor random laser composed of a gain region and random feedback region, comprising: a substrate, a lower confinement layer on the substrate, an active layer on the lower confinement layer, an upper confinement layer on the active layer, a strip-shaped waveguide layer longitudinally made in middle of the upper confinement layer, a P+ electrode layer divided into two segments by an isolation groove and made on the waveguide layer, and an N+ electrode layer on a back face of the lower confinement layer. The two segments of the P+ electrode layer correspond respectively to the gain region and the random feedback region. The random feedback region uses a doped waveguide to randomly feed back light emitted and amplified by the gain region. As a result, random laser is emitted.
    Type: Application
    Filed: August 27, 2018
    Publication date: June 25, 2020
    Applicant: Taiyuan University Of Technology
    Inventors: Mingjiang Zhang, Jianzhong Zhang, Tianshuang Lv, Lijun Qiao, Yi Liu, Tong Zhao, Anbang Wang, Yuncai Wang
  • Publication number: 20200169895
    Abstract: A server, method, and computer-readable storage medium for coverage prediction in wireless networks. The server includes a memory storing instructions and a processor operably connected to the memory, which is configured to execute the instructions to cause the server to identify a region of interest (RoI) for the coverage prediction; determine, using a neural network, a set of values for a system performance metric for areas in the RoI, respectively; and generate the coverage prediction for the RoI which associates the areas in the RoI with a determined value in the set of values. The set of values for the system performance metric is determined based on a plurality of data samples for a set of RoIs which include at least one of building height, terrain height, foliage height, clutter data that classifies land cover, line-of-sight indication data, antenna height, and ground truth data for the system performance metric.
    Type: Application
    Filed: November 22, 2019
    Publication date: May 28, 2020
    Inventors: Hao Chen, Vishnu Ratnam, Young-Han Nam, Joonyoung Cho, Jianzhong Zhang
  • Patent number: 10664556
    Abstract: Example embodiments for generating a user interface are presented. In an example embodiment, a layout definition for the interface is accessed, in which the layout definition defines user interface groups, each of which include one or more user interface elements. Also accessed are metadata describing the groups and the elements of each group, with each element having a corresponding type. One or more control renderers are also accessed, with each control renderer including programming code to render those of the elements of a corresponding type based on the metadata. Also accessed are one or more context renderers, with each context renderer including programming code to arrange the rendered elements in a layout for the user interface based on relationships between groups. The control renderers and context renderers are executed to render the user interface.
    Type: Grant
    Filed: August 30, 2017
    Date of Patent: May 26, 2020
    Assignee: SAP SE
    Inventors: Ke Lu, Yonggao Pan, Jing Zhao, Liangyi Zhang, Jianzhong Li, Wenqi Li