Patents by Inventor Lei Wan

Lei Wan 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: 11025379
    Abstract: The available transmission resources on a downlink-shared channel are divided into resource blocks, each resource block comprising a predetermined number of sub-carriers during a predetermined time period. The resource blocks are subdivided into localized resource blocks and distributed resource blocks. A user requiring sufficient resources can be allocated a plurality of said localized resource blocks. A user who would require only a small number of said localized resource blocks can instead be allocated subunits of a plurality of said distributed resource blocks.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: June 1, 2021
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Stefan Parkvall, Lei Wan, Erik Dahlman
  • Publication number: 20210126052
    Abstract: A memory device includes a cross-point array of spin-torque transfer MRAM cells. First rail structures laterally extend along a first horizontal direction. Each of the first rail structures includes a vertical stack including, from bottom to top, a first electrically conductive line, a reference layer having a fixed magnetization direction, and a tunnel barrier layer. Second rail structures laterally extend along a second horizontal direction. Each of the second rail structures includes a second electrically conductive line that overlies the first rail structures. A two-dimensional array of pillar structures is located between a respective one of the first rail structures and a respective one of the second rail structures. Each of the pillar structures includes a free layer having energetically stable magnetization orientations that are parallel or antiparallel to the fixed magnetization direction.
    Type: Application
    Filed: October 29, 2019
    Publication date: April 29, 2021
    Inventors: Lei WAN, Jordan KATINE, Tsai-Wei WU
  • Patent number: 10991879
    Abstract: A phase change memory cell includes a first electrode, a second electrode located over the first electrode, a vertical pillar structure located between the first and second electrodes, the pillar structure containing a first phase change memory (PCM) material portion, a second PCM material portion and an intermediate electrode located between the first PCM material portion and the second PCM material portion, and a resistive liner containing a first segment electrically connected in parallel to the first PCM material portion between the first electrode and the intermediate electrode, and a second segment electrically connected in parallel to the second PCM material portion between the intermediate electrode and the second electrode. The first PCM material portion has a different electrical resistance than the second PCM material portion, and the first segment of the resistive liner has a different electrical resistance than the second segment of the resistive liner.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: April 27, 2021
    Assignee: WESTERN DIGITAL TECHNOLOGIES, INC.
    Inventors: Ricardo Ruiz, Lei Wan, John Read, Zhaoqiang Bai, Mac Apodaca
  • Patent number: 10904051
    Abstract: Embodiments of this application provide a method for sending carrier information, and the method includes: performing, by a base station, subcarrier mapping on a first carrier in a first subcarrier mapping manner, where subcarriers corresponding to the first subcarrier mapping manner have frequency offset of a first offset value relative to subcarriers corresponding to a second subcarrier mapping manner, and the subcarriers corresponding to the second subcarrier mapping manner are symmetric with respect to a carrier center frequency of the first carrier, and include no subcarrier on the carrier center frequency of the first carrier; and sending, by the base station, indication information to a terminal, where the indication information carries information about the first offset value.
    Type: Grant
    Filed: July 19, 2019
    Date of Patent: January 26, 2021
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Wei Sun, Zhiheng Guo, Xinqian Xie, Xingqing Cheng, Lei Wan, Lei Guan
  • Publication number: 20200411754
    Abstract: A phase change memory cell includes a first electrode, a second electrode located over the first electrode, a vertical pillar structure located between the first and second electrodes, the pillar structure containing a first phase change memory (PCM) material portion, a second PCM material portion and an intermediate electrode located between the first PCM material portion and the second PCM material portion, and a resistive liner containing a first segment electrically connected in parallel to the first PCM material portion between the first electrode and the intermediate electrode, and a second segment electrically connected in parallel to the second PCM material portion between the intermediate electrode and the second electrode. The first PCM material portion has a different electrical resistance than the second PCM material portion, and the first segment of the resistive liner has a different electrical resistance than the second segment of the resistive liner.
    Type: Application
    Filed: June 26, 2019
    Publication date: December 31, 2020
    Inventors: Ricardo RUIZ, Lei WAN, John READ, Zhaoqiang BAI, Mac APODACA
  • Publication number: 20200411589
    Abstract: A memory array is provided that includes a first memory level having a plurality of memory cells each including a corresponding magnetic memory element coupled in series with a corresponding selector element, and a plurality of vias, each of the vias coupled in series with a corresponding one of the memory cells.
    Type: Application
    Filed: July 2, 2019
    Publication date: December 31, 2020
    Applicant: SanDisk Technologies LLC
    Inventors: Lei Wan, Tsai-Wei Wu, Jordan A. Katine
  • Publication number: 20200384053
    Abstract: The invention relates to ophthalmic compositions containing an aqueous extract derived from Polygonum cuspidatum Sieb. et Zucc. and/or an aqueous extract derived from Prunella vulgaris. The invention further relates to the use of the ophthalmic compositions in the treatment of myopia.
    Type: Application
    Filed: June 4, 2019
    Publication date: December 10, 2020
    Inventor: Lei Wan
  • Publication number: 20200350364
    Abstract: A spin-orbit-torque (SOT) magnetoresistive random access memory (MRAM) device includes a SOT MRAM cell containing a first two terminal selector element, a nonmagnetic metallic assist plate, and a magnetic tunnel junction located between the first two terminal selector element and the nonmagnetic metallic assist plate, and a circuit selection element selected from a transistor or a second two terminal selector element electrically connected to the nonmagnetic metallic assist plate of the SOT MRAM cell.
    Type: Application
    Filed: May 2, 2019
    Publication date: November 5, 2020
    Inventors: Lei WAN, Jordan KATINE, Neil ROBERTSON
  • Patent number: 10826674
    Abstract: In a data transmission method, a terminal device obtains configuration information of a subframe n for transmitting at least one of a downlink data channel, an uplink data channel, a downlink control channel, an uplink control channel, a downlink reference signal, and an uplink reference signal. The terminal device performs data transmission between the terminal device and a network device on the subframe n according to the configuration information.
    Type: Grant
    Filed: October 18, 2018
    Date of Patent: November 3, 2020
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Lei Wan, Sha Ma, Chaojun Li
  • Patent number: 10819397
    Abstract: This application discloses an information transmission method and a related device. The method includes: determining, by a terminal device, a first time element and a second time element, where the first time element is a time in which the terminal device sends first information to a first network device on a first carrier, the second time element is a time in which the terminal device sends second information to a second network device on a second carrier, and the first time element and the second time element overlap in time; and when the terminal device determines to send the first information to the first network device on the first carrier in the first time element, sending, by the terminal device, the second information to the second network device on the second carrier in a third time element.
    Type: Grant
    Filed: October 24, 2019
    Date of Patent: October 27, 2020
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Zhiheng Guo, Lei Wan, Xinqian Xie
  • Publication number: 20200287601
    Abstract: Methods and arrangements are described for Multi User Multiple-Input-Multiple-Output (MU-MIMO) signaling via Multiple-Input-Multiple-Output (MIMO) antennas between a base station and one of a plurality of mobile terminals supporting both Single User and Multi User Multiple-Input-Multiple-Output (SU-MIMO and MU-MIMO) signaling modes. Switching between the modes is supported, and the modes have partly shared signaling. SU-MIMO mode signaling which is not needed for MU-MIMO mode signaling is identified. Data bits of the identified signaling is interpreted to comprise signaling information associated with MU-MIMO mode.
    Type: Application
    Filed: May 21, 2020
    Publication date: September 10, 2020
    Inventors: George JÖNGREN, Bo GÖRANSSON, Lei WAN
  • Publication number: 20200280946
    Abstract: A method and an apparatus for transmitting or receiving information are provided. The method includes: receiving, by a terminal device, indication information from a network device, where the indication information indicates a timing adjustment parameter, the timing adjustment parameter is to be used by the terminal device to determine transmit timings on a first uplink carrier and a second uplink carrier, the first uplink carrier is an uplink carrier of a first radio access technology, and the second uplink carrier is an uplink carrier of a second radio access technology; and determining, by the terminal device, the timing adjustment parameter based on the indication information.
    Type: Application
    Filed: May 15, 2020
    Publication date: September 3, 2020
    Inventors: Zhiheng Guo, Xinqian Xie, Zukang Shen, Yi Long, Yang Zhao, Lei Wan, David Jean-Marie Mazzarese
  • Publication number: 20200280999
    Abstract: A resource configuration method, apparatus and storage medium are disclosed. The method includes: sending, by a network device, first information to a terminal, where the first information is used by the terminal to determine not to send data and/or receive data on a first resource; and the first information includes first indication information used to indicate a first resource block (RB) and second indication information used to indicate a subcarrier occupied by the first resource on the first RB; or the first information includes third indication information used to indicate a first subcarrier, and the first subcarrier is used to determine the first resource. The resource configuration method and apparatus and the storage medium that are provided in the present disclosure can improve resource configuration flexibility.
    Type: Application
    Filed: May 15, 2020
    Publication date: September 3, 2020
    Inventors: Zhiheng GUO, Yongqiang FEI, Zukang SHEN, Yi LONG, Yang ZHAO, Lei WAN, Wenping BI
  • Publication number: 20200280524
    Abstract: This application discloses an information indication method, a terminal device, and a network device. The method includes: receiving, by a terminal device, indication information from a network device, where the indication information indicates at least one of frequency location information or bandwidth information, the frequency location information includes one of a number of a first subcarrier, an absolute radio frequency channel number of the first subcarrier, or a first frequency, and the bandwidth information includes one of first bandwidth, a second subcarrier quantity, a first resource block quantity, or a second resource block bitmap; and determining, by the terminal device, a first resource based on the indication information, where the first resource is a to-be-reserved resource. According to this application, reliability of a determined location of a resource that needs to be reserved in a system is improved.
    Type: Application
    Filed: May 15, 2020
    Publication date: September 3, 2020
    Inventors: Zhiheng Guo, Wenping Bi, Lei Wan, Zukang Shen, Yang Zhao, Yi Long, Yongqiang Fei
  • Publication number: 20200260424
    Abstract: A communication method and an apparatus are provided. The method includes: receiving, by a terminal device, downlink control information (DCI) from a network device on a first downlink carrier; and determining a first uplink carrier or a second uplink carrier based on the DCI, where the DCI indicates an uplink carrier to be used by the terminal device to send an uplink signal to the network device is the first uplink carrier or the second uplink carrier; the DCI for indicating the first uplink carrier and the DCI for indicating the second uplink carrier having equal bit quantity; and the first downlink carrier, the first uplink carrier, and the second uplink carrier belong to a same cell.
    Type: Application
    Filed: April 29, 2020
    Publication date: August 13, 2020
    Inventors: Zhiheng Guo, Xinqian Xie, Zukang Shen, Yi Long, Yang Zhao, Lei Wan, David Jean-Marie Mazzarese
  • Patent number: 10735498
    Abstract: Embodiments provide a method and a device for interworking between different OTTs. The method includes: obtaining OTT information of a target user; and performing an interworking processing operation between cross-OTT friends according to the obtained OTT information of the target user. Interworking between the cross-OTT friends is implemented by using the foregoing operation.
    Type: Grant
    Filed: February 2, 2016
    Date of Patent: August 4, 2020
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Yanmei Yang, Lei Wan, De Chen
  • Publication number: 20200228648
    Abstract: A method and an apparatus for detecting an abnormality of a caller are provided. The method includes at the beginning of a call, acquiring, by a terminal device, real voice/video data of a call object who needs abnormality detection and a corresponding pre-trained multi-stage neural network detection model, during the call, collecting, by the terminal device, call data according to a preset data collection policy, for each call object, inputting the currently collected call data and the real voice/video data of the call object into the model of the call object, and determining whether the call object is abnormal according to a detection result output by the model, in which the call data includes image data and/or voice data, and an identification manner adopted by the model includes face identification, voiceprint identification, limb movement identification, and/or lip language identification.
    Type: Application
    Filed: January 10, 2020
    Publication date: July 16, 2020
    Inventors: Chengjun WANG, Xin LIU, Feng TANG, Suxia LI, Bo PENG, Lei WAN
  • Patent number: 10687328
    Abstract: To facilitate sending a reference signal in a wireless communication environment, a transmitter sends a reference signal in a first time-frequency resource to a user equipment (UE); the transmitter sends data information in a first portion of a second time-frequency resource different from the first time-frequency resource to the UE; and the transmitter excludes data information from being sent in a second portion of the second time-frequency resource. The second portion of the second time-frequency resource is designated for use by another transmitter for sending another reference signal to the UE.
    Type: Grant
    Filed: October 11, 2017
    Date of Patent: June 16, 2020
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Lei Wan, Xingqing Cheng, Mingyu Zhou, Yajun Zhao
  • Patent number: 10673497
    Abstract: Methods and arrangements are described for Multi User Multiple-Input-Multiple-Output (MU-MIMO) signaling via Multiple-Input-Multiple-Output (MIMO) antennas between a base station and one of a plurality of mobile terminals supporting both Single User and Multi User Multiple-Input-Multiple-Output (SU-MIMO and MU-MIMO) signaling modes. Switching between the modes is supported, and the modes have partly shared signaling. SU-MIMO mode signaling which is not needed for MU-MIMO mode signaling is identified. Data bits of the identified signaling is interpreted to comprise signaling information associated with MU-MIMO mode.
    Type: Grant
    Filed: July 26, 2018
    Date of Patent: June 2, 2020
    Assignee: Unwired Planet, LLC
    Inventors: George Jöngren, Bo Göransson, Lei Wan
  • Publication number: 20200145127
    Abstract: Embodiments of the present invention provide an information transmission method and device. The method includes: reporting, by a UE, a CQI value to an eNB; receiving, by the UE, an MCS value sent by the eNB, where the MCS value is determined by the eNB according to the CQI value; and receiving, by the UE, PDSCH data according to the MCS value, where the CQI value and the MCS value are determined according to a second set of tables, where a modulation scheme that can be supported by the second set of tables is higher than 64QAM. The embodiments of the present invention can improve system performance and reduce waste of feedback resources.
    Type: Application
    Filed: January 6, 2020
    Publication date: May 7, 2020
    Applicant: HUAWEI TECHNOLOGIES CO.,LTD.
    Inventors: Jianbing Yang, Yang Li, Xingqing Cheng, Lei Wan