Patents by Inventor Yajun Zhao

Yajun Zhao 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: 20180219667
    Abstract: An information processing method, a corresponding base station and terminal are disclosed. The method includes presetting a subframe structure comprising at least a first time slot and a second time slot, herein the first time slot is used for transmission of a downlink signal; or is idle; or is switched to reception of an uplink signal and schedules transmission of the uplink signal or does not schedule transmission of the uplink signal; or is switched to reception of a signal for only performing reception and measurement of other signals but does not schedule transmission of the uplink signal; and the second time slot is used for reception of an uplink signal and schedules transmission of the uplink signal; or is idle, or is switched to reception of a signal for only performing measurement but does not schedule the uplink signal.
    Type: Application
    Filed: February 11, 2015
    Publication date: August 2, 2018
    Inventors: Yajun ZHAO, Linmei MO, Hanqing XU
  • Patent number: 10038527
    Abstract: Disclosed are a method for ensuring channel continuity after precoding, a base station, a user equipment (UE), and a computer readable storage medium. The method comprises: the base station notifying the UE of whether a precoding manner with a continuous frequency domain is used in data sent to the UE by the base station, and the base station sending data to the UE according to a precoding manner with a continuous or discontinuous frequency domain. The method further comprises: when the UE determines, according to the notification of the base station, that the precoding manner with a continuous frequency domain is used in the data sent to the UE by the base station, the UE executing an optimized channel estimation and demodulation manner within a processing capability of the UE.
    Type: Grant
    Filed: December 30, 2013
    Date of Patent: July 31, 2018
    Assignee: ZTE Corporation
    Inventors: Yujie Li, Baoyu Sun, Yajun Zhao, Peng Geng, Shupeng Li
  • Patent number: 10038481
    Abstract: Disclosed are a multi-antenna transmission method, a terminal and a base station, wherein, an eNB sends a UE a SRS transmission mode including new SRS transmission port information and/or a signaling for instructing the UE to perform antenna group alternate transmission as well as a control signaling required by the SRS transmission mode; the UE transmits a SRS using the abovementioned SRS transmission mode, and the eNB estimates a channel information according to the SRS and calculates and transmits a precoding matrix.
    Type: Grant
    Filed: August 14, 2013
    Date of Patent: July 31, 2018
    Assignee: XI'AN ZHONGXING NEW SOFTWARE CO., LTD.
    Inventors: Chen Huang, Yajun Zhao, Linmei Mo, Hanqing Xu, Baoyu Sun, Yujie Li, Hongfeng Qin, Guofeng Chen, Hongfeng Yuan, Xin Zhang
  • Publication number: 20180213564
    Abstract: Provided is a method for sending a signal by using an unlicensed carrier. The method includes: processing a designated reference signal to carry identification information of an operator; and sending the designated reference signal on a time domain and/or a frequency domain by using an unlicensed carrier.
    Type: Application
    Filed: April 8, 2016
    Publication date: July 26, 2018
    Inventors: Hanqing XU, Yajun ZHAO, Linmei MO
  • Publication number: 20180211428
    Abstract: A method includes: receiving sensor data representing a subject within a field of vision associated with respective ones of a plurality of modular cameras associated with a composite camera and one or more geo-spatial characteristics associated with respective ones of the plurality of modular cameras; determining an arrangement of the composite camera based on the sensor data; generating digital content for respective ones of the plurality of modular cameras based on the sensor data; and generating combined digital content that represents a subject within a field of vision associated with the composite camera based on the digital content and the arrangement of the composite camera, wherein the field of vision associated with the composite camera includes at least some of fields of vision associated with the plurality of modular cameras.
    Type: Application
    Filed: February 8, 2017
    Publication date: July 26, 2018
    Inventors: Kongqiao Wang, Xiao-feng Li, Yajun Zhao, Wang Huang
  • Publication number: 20180213429
    Abstract: Disclosed are a channel state information measuring method and apparatus. The method includes: a base station informs a terminal to feed back a channel state information (CSI) measuring result of a carrier set, wherein the carrier set comprises an unlicensed carrier; and the base station receives the CSI measuring result, fed back by the terminal, of the carrier set.
    Type: Application
    Filed: July 13, 2016
    Publication date: July 26, 2018
    Inventors: Chenchen Zhang, Yu Ngok Li, Yajun Zhao, Liyuan Zhong, Juan Liu
  • Publication number: 20180213563
    Abstract: Embodiments provide a contention-based access method and device, which include that: a transmission node acquires predefined information; and the transmission node performs contention-based access according to the predefined information, wherein the predefined information includes at least one of: a frame structure, a data transmission subframe location, a data type, dedicated indication signaling, a frame scheduling manner and data transmission. Listen Before Talk (LBT) different from Downlink (DL) is adopted, and a flow is simplified when Uplink (UL) LBT is executed, so that the problems of poor UL performance and low spectrum efficiency caused by adoption of DL LBT for UL in the related solution may be solved.
    Type: Application
    Filed: August 8, 2016
    Publication date: July 26, 2018
    Inventors: Ling Yang, Wei Gou, Bo Dai, Focai Peng, Feng Bi, Yajun Zhao, Xincai Li
  • Publication number: 20180192441
    Abstract: A management method and apparatus for a pattern on an unlicensed carrier. The method comprises: transmission nodes generate and exchange clear channel assessment (CCA) patterns, the CCA patterns comprising patterns used in different stages of clear channel assessment (CCA) detection, a pattern used during data transmission, and a pattern for CCA detection, and the transmission nodes comprising one or more of a system-level node, a cell-level node, or a UE-level node.
    Type: Application
    Filed: June 22, 2016
    Publication date: July 5, 2018
    Inventors: Ling YANG, Wei GOU, Yajun ZHAO
  • Publication number: 20180192442
    Abstract: A data transmission method includes: transmitting by a base station a configuration signaling to an UE, wherein the configuration signaling carries a CCA parameter of the UE and an uplink transmission parameter of the UE; and receiving, by the base station, uplink data which are transmitted by the UE according to the configuration signaling.
    Type: Application
    Filed: May 9, 2016
    Publication date: July 5, 2018
    Inventors: Xincai LI, Wei GOU, Yajun ZHAO
  • Publication number: 20180192409
    Abstract: A spectrum resource allocation method and apparatus are provided. The method includes: determining a resource allocation pattern of nodes according to a preset parameter, wherein the preset parameter comprises at least one of: a starting position of a frequency domain or an offset of the frequency domain, an ending position of the frequency domain, a length of consecutively allocated resources or a size of consecutively allocated clusters, a number of clusters or a number of resource sets, a period T, a number of multiplexing nodes in frequency domain resources, or a number of allocatable resources in a system; and obtaining a corresponding resource allocation indicator value r by the resource allocation pattern determined by at least one of the preset parameters in a preset encoding mode. The resource allocation indicator value r is used for indicating resource position information allocated to a terminal UE.
    Type: Application
    Filed: June 30, 2016
    Publication date: July 5, 2018
    Inventors: Ling YANG, Wei GOU, Yajun ZHAO, Focai PENG
  • Publication number: 20180150126
    Abstract: Systems, methods, and detection apparatuses, for the detection of body capacitance, such as the capacitance of a human body, are disclosed. A detection apparatus determines an electronic signal characteristic of one or more electrodes. The electronic signal characteristic can be based on a voltage. Responsive to the electronic signal characteristic being within a predetermined electronic signal characteristic range, a charging mode is activated. Responsive to the electronic signal characteristic of the one or more electrodes being outside the predetermined electronic signal characteristic range, a capacitance detection mode is activated. The capacitance detection mode includes: determining a capacitance value of the one or more electrodes in which the capacitance value is based on a frequency of change in a capacitance associated with the one or more electrodes. Responsive to the capacitance of the one or more electrodes exceeding a capacitance threshold, activating a wearable mode.
    Type: Application
    Filed: November 30, 2016
    Publication date: May 31, 2018
    Inventors: Yurong Xu, Baitao Lyu, Jun Yang, Yajun Zhao
  • Publication number: 20180132137
    Abstract: The present invention provides a resource use method, device and system. The method comprises: a transmission node dynamically changes, according to information detected on a current carrier the size of a resource corresponding to the carrier, and uses the changed carrier to perform data transmission. The present invention solves the problem of lowness of spectrum resource utilization rate, and increases the spectrum utilization rate.
    Type: Application
    Filed: February 17, 2016
    Publication date: May 10, 2018
    Inventors: Bo Dai, Chunli Liang, Weiwei Yang, Yajun Zhao
  • Patent number: 9961714
    Abstract: The present invention relates to the field of wireless communications. Disclosed are a state switching method and device for a small cell base station and a computer storage medium. The method comprises: acquiring state switching information comprising a state switching mode and performing state switching on the small cell base station according to the state switching information.
    Type: Grant
    Filed: June 23, 2014
    Date of Patent: May 1, 2018
    Assignee: ZTE Corporation
    Inventors: Hanqing Xu, Yajun Zhao, Linmei Mo
  • Publication number: 20180115995
    Abstract: An unlicensed carrier contention method and apparatus are provided. The method comprises that: a Licensed Assisted Access (LAA) device implements a Clear Channel Assessment (CCA) or an Evolution Clear Channel Assessment (eCCA) on a channel; if the result of the assessment is ‘idle’, the LAA device decrement N and determines whether or not the decremented N is greater than 0, wherein N is a natural number; and if the result of the determination indicates that the decremented N is not greater than 0, the LAA device uses an unlicensed carrier for data transmission. The disclosure addresses the problem that no contention withdrawal mechanism or procedure suitable for an LAA system is provided in the conventional art.
    Type: Application
    Filed: April 8, 2016
    Publication date: April 26, 2018
    Inventors: Wei Gou, Focai Peng, Feng Bi, Yajun Zhao
  • Patent number: 9944616
    Abstract: The present invention provides processes for the preparation of Tasimelteon (1), as well as processes for the preparation of intermediates of Formulas (2), (3) and (4) useful in the preparation of Tasimelteon (1).
    Type: Grant
    Filed: June 6, 2017
    Date of Patent: April 17, 2018
    Assignee: Apotex Inc.
    Inventors: Yajun Zhao, Murali Kondamreddy, Peter Garth Blazecka, Gamini Weeratunga, Craig Stewart, Nalini Nagireddy, Michael B. Johansen, Uma Kotipalli
  • Patent number: 9948642
    Abstract: At least two biometric measurement signals are generated by contact with a single individual. At least one feature is extracted from each signal of the at least two biometric measurement signals, the extracted features are combined to generate a combined biometric signal. The combined biometric signal is compared with a defined biometric signal associated with a known individual, responsive to the combined biometric signal matching the defined biometric signal, a signal is transmitted indicating that the single individual is the known individual. The biometric measurement signals can be collected by a biometric identification device worn or carried by the single individual. The processing may be done by the biometric identification device or a remote server.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: April 17, 2018
    Assignees: Anhui Huami Information Technology Co., Ltd., Huami Inc.
    Inventors: Fei Wang, Ting Chen, Yajun Zhao
  • Publication number: 20180091979
    Abstract: A data transmission method and device, and an occupation signal transmission method and device are provided. In the data transmission method, a first group of terminals and/or a second group of terminals perform Clear Channel Assessment (CCA) and/or evolved Clear Channel Assessment (eCCA) detection on unlicensed carrier bandwidth resources by using at least one of the following manners: the first group of terminals and/or the second group of terminals respectively perform CCA and/or eCCA detection on CCA and/or eCCA resources pre-configured for the first group of terminals and/or the second group of terminals; the first group of terminals and/or the second group of terminals respectively perform CCA and/or eCCA detection on the entire unlicensed carrier bandwidth resources; and the first group of terminals and/or the second group of terminals determine subsequent data transmission based on a detection result.
    Type: Application
    Filed: March 18, 2016
    Publication date: March 29, 2018
    Inventors: Ling YANG, Wei GOU, Yajun ZHAO, Feng BI
  • Patent number: 9912390
    Abstract: A method for guaranteeing channel phase continuity of pre-coded RB groups, a base station and a computer-readable storage medium are described. The method includes that: a base station implements a channel estimation through a Sounding Reference Signal (SRS) measurement to obtain an uplink channel and obtains a corresponding downlink channel based on reciprocity of uplink and downlink channels; the base station calculates a weight phase correction factor based on the obtained downlink channel and corrects a pre-coding weight with the weight phase correction factor; and the base station pre-codes data according to the corrected pre-coding weight and sends the pre-coded data.
    Type: Grant
    Filed: December 25, 2013
    Date of Patent: March 6, 2018
    Assignee: ZTE CORPORATION
    Inventors: Baoyu Sun, Yajun Zhao, Yujie Li, Xin Zhang, Linmei Mo, Hanqing Xu, Guofeng Chen, Chen Huang
  • Patent number: 9900130
    Abstract: Disclosed is a method for sending a signal, comprising: a small cell sending a discovery signal (DS) in a corresponding sending mode according to a current state of the small cell. Further disclosed is a device for sending a signal. In the present invention, according to the current state of the small cell, an access state of the small cell is adjusted in real time, thereby significantly reducing the interference of the small cell to a neighbor cell, improving the system performance, and being able to reduce the energy consumption of the small cell.
    Type: Grant
    Filed: May 12, 2014
    Date of Patent: February 20, 2018
    Assignee: ZTE Corporation
    Inventors: Hanqing Xu, Yajun Zhao, Linmei Mo, Yonghong Gao, Aijun Cao
  • Publication number: 20180035311
    Abstract: Methods and devices for using an unlicensed carrier resource are provided. In a method for using an unlicensed carrier resource, an eNode B (eNB) receives indication information reported by a User Equipment (UE), where the indication information is used for indicating that a local Secondary Cell (Scell) of the UE is idle; upon a trigger of the indication information, the eNB detects whether a local Scell of the eNB is idle or not; and the eNB judges, according to a detection result, whether or not to use an unlicensed carrier resource which has been occupied by the UE.
    Type: Application
    Filed: August 26, 2015
    Publication date: February 1, 2018
    Inventors: Li YANG, Wei GOU, Yajun ZHAO, Zhisong ZUO