Patents by Inventor Junchao Li

Junchao Li 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: 20190386798
    Abstract: This application provides a data communication method, a terminal, and a base station. In one embodiment, the terminal receives a first demodulation reference signal based on a first physical resource block index, wherein the first physical resource block index is determined based on a first location in frequency domain, and the first demodulation reference signal is usable for demodulating a first data channel for carrying a system information block; the terminal sends and/or receives a second demodulation reference signal based on a second physical resource block index, wherein the second physical resource block index is determined based on a second location in frequency domain, and the second demodulation reference signal is usable for demodulating a second data channel other than the first data channel.
    Type: Application
    Filed: August 27, 2019
    Publication date: December 19, 2019
    Inventors: Junchao Li, Hao Tang, Zhenfei Tang
  • Publication number: 20190356448
    Abstract: Embodiments of this application provide a signal transmission method and apparatus. The method includes: receiving, by a terminal device, configuration information sent by a network device, where the configuration information is used to instruct the terminal device to send a reference signal, and a resource used to transmit the reference signal is determined based on a public cell identity of a cell to which the terminal device belongs; and sending, by the terminal device, the reference signal based on the configuration information by using the resource. According to the signal transmission method and apparatus in the embodiments of this application, an existing reference signal can be used to perform interference/channel measurement between terminal devices, so that a terminal device on a receiving side can distinguish between interference cells while reference signal utilization is improved.
    Type: Application
    Filed: July 4, 2019
    Publication date: November 21, 2019
    Inventors: Junchao LI, Chi ZHANG, Zhengwei GONG
  • Publication number: 20190349170
    Abstract: The present disclosure relates to communication methods and communications apparatus. One example method includes receiving, by a terminal, configuration information sent by a network device, where the configuration information is used to indicate a resource in a plurality of candidate resources of a common search space, and the candidate resources of the common search space are determined based on one or more of a cell identity, downlink bandwidth, a frequency domain resource location of a synchronization channel, and a frequency domain resource location of a broadcast channel, and receiving, by the terminal, common control information on the resource indicated by the configuration information.
    Type: Application
    Filed: July 23, 2019
    Publication date: November 14, 2019
    Inventors: Junchao LI, Hao TANG, Zhenfei TANG, Yueying ZHAO, Wenwen HUANG
  • Publication number: 20190334680
    Abstract: A resource indication method, a user equipment and a network device is disclosed. In an embodiment a method includes receiving, by user equipment, configuration information sent by a network device, wherein the configuration information comprises allocation information of frequency domain resources of a plurality of first system parameters and transmitting, by the user equipment, information corresponding to a physical channel and/or information corresponding to a physical signal on at least one resource element in a time-frequency resource corresponding to a frequency domain resource of at least one of the plurality of first system parameters, wherein the first system parameter comprises a first subcarrier spacing size, a cyclic prefix length, a transmission time interval length, a symbol length, or a symbol quantity.
    Type: Application
    Filed: July 5, 2019
    Publication date: October 31, 2019
    Inventors: Junchao Li, Ning Wu, Hao Tang, Xinxian Li, Zhongfeng Li
  • Publication number: 20190327723
    Abstract: Embodiments of the present invention provide a resource configuration method and an apparatus, to prevent user equipment (UE) from replying acknowledgement responses of different downlink subframes. The method includes: receiving, by UE, configuration information of an acknowledgement response resource, where the acknowledgement response resource is used by the UE to send a downlink data channel acknowledgement response of an nth transmission unit on an uplink control channel of an (n+k)th transmission unit, the configuration information includes first information, the first information is used to indicate a quantity of transmission units located before the nth transmission unit in a feedback window of the (n+k)th transmission unit; and sending, by the UE, the downlink data channel acknowledgement response of the nth transmission unit on the uplink control channel of the (n+k)th transmission unit based on the configuration information by using the acknowledgement response resource.
    Type: Application
    Filed: July 1, 2019
    Publication date: October 24, 2019
    Inventors: Junchao LI, Zhengwei GONG, Chi ZHANG
  • Publication number: 20190320428
    Abstract: Embodiments of the present invention provide a control channel resource indication method, user equipment, and a network device. The method includes: sending, by user equipment, a preamble signal sequence; receiving, by the user equipment, higher layer signaling corresponding to the preamble signal sequence, where the higher layer signaling is indicated by downlink control information carried in common search space, and a time-frequency resource detected by the user equipment when determining a control channel includes the common search space and user equipment-dedicated search space; and determining, by the user equipment, frequency domain resource location information of the user equipment-dedicated search space based on the higher layer signaling, where the frequency domain resource location information includes a quantity of frequency domain resource units occupied by the user equipment-dedicated search space in frequency domain and a location of the frequency domain resource unit.
    Type: Application
    Filed: June 28, 2019
    Publication date: October 17, 2019
    Inventors: Xu ZHANG, Lixia XUE, Bingyu QU, Junchao LI
  • Publication number: 20190260565
    Abstract: Embodiments of the present invention provide an information transmission method, including: transmitting, by user equipment (UE), a measurement reference signal, where a subcarrier spacing of the measurement reference signal is a multiple of a subcarrier spacing of a data channel of the UE. The method may include: receiving, by the user equipment (UE), configuration information from a wireless network device, where the configuration information includes information used to configure the measurement reference signal transmitted by the user equipment (UE), and the information about the measurement reference signal includes information about the subcarrier spacing of the measurement reference signal. In this way, reference signal transmission overheads can be reduced.
    Type: Application
    Filed: May 3, 2019
    Publication date: August 22, 2019
    Inventors: Junchao LI, Zhengwei GONG, Chi ZHANG
  • Publication number: 20190230686
    Abstract: Example methods and apparatus for transmitting a signal transmission method and a device are disclosed. One method includes transmitting a signal based on a predefined transmission pattern by a communications device. The transmission pattern defines that a non-first downlink timing boundary in a downlink time domain unit is later than or earlier than a first downlink timing boundary is defined, or that an uplink timing boundary in an uplink time domain unit is earlier than or later than the first downlink timing boundary.
    Type: Application
    Filed: March 29, 2019
    Publication date: July 25, 2019
    Inventors: Junchao LI, Chi ZHANG, Zhengwei GONG
  • Publication number: 20190191421
    Abstract: A method includes: communicating, by a base station, first UE specific information of UE with the UE in a UE source operating bandwidth resource; and sending, by the base station, information about a UE target operating bandwidth resource of the UE to the UE in a UE calibration bandwidth resource of the UE, where the UE target operating bandwidth resource is used by the base station to communicate second UE specific information of the UE with the UE, and the UE source operating bandwidth resource is not completely the same as the UE calibration bandwidth resource.
    Type: Application
    Filed: February 20, 2019
    Publication date: June 20, 2019
    Inventors: Junchao Li, Hao Tang, Fan Wang, Zhenfei Tang
  • Publication number: 20190173715
    Abstract: A resource configuration method and an apparatus are provided. The resource configuration method includes: receiving, by user equipment, configuration information sent by a network device, where the configuration information is used to indicate at least one time interval and at least one time-frequency resource unit within the time interval, and the time-frequency resource unit includes a first time-frequency resource subunit and/or a second time-frequency resource subunit; and reconfiguring, by the user equipment, a resource mapping manner and/or a rate matching manner based on the configuration information, so that no downlink receiving or uplink sending is performed by the user equipment on the first time-frequency resource subunit, and adjusting a timing offset of the second time-frequency resource subunit to perform downlink receiving or uplink sending on the second time-frequency resource subunit obtained by adjusting the timing offset.
    Type: Application
    Filed: February 11, 2019
    Publication date: June 6, 2019
    Applicant: Huawei Technologies Co., Ltd.
    Inventors: Junchao Li, Chi Zhang, Zhengwei Gong
  • Publication number: 20190140880
    Abstract: Embodiments of this application provide a communication method, a communications apparatus, and a communications system, to determine a physical resource block (PRB) grid when a center frequency of a synchronization signal (SS) is inconsistent with a center frequency of a carrier. The method includes: receiving, by a terminal, an SS from a network device; determining, by the terminal, a first PRB grid based on the SS; receiving, by the terminal, first indication information from the network device, where the first indication information is used to indicate a first frequency offset between the first PRB grid and a second PRB grid; and determining, by the terminal, the second PRB grid based on the first PRB grid and the first frequency offset.
    Type: Application
    Filed: December 28, 2018
    Publication date: May 9, 2019
    Inventors: Xinxian Li, Hao Tang, Zhenfei Tang, Junchao Li
  • Publication number: 20190097774
    Abstract: This application provides a data communication method, a terminal, and a base station. In one embodiment, the terminal receives a first demodulation reference signal based on a first physical resource block index. The first physical resource block index is determined based on a first location in frequency domain, and the first demodulation reference signal is used to demodulate a data channel on which system information is located. The terminal sends and/or receives a second demodulation reference signal based on a second physical resource block index. The second physical resource block index is determined based on a second location in frequency domain, and the second demodulation reference signal is used to demodulate a data channel other than the data channel on which the system information is located.
    Type: Application
    Filed: November 29, 2018
    Publication date: March 28, 2019
    Inventors: Junchao Li, Hao Tang, Zhenfei Tang
  • Publication number: 20190082472
    Abstract: Embodiments of the present invention provide a data transmission method, a network device, and user equipment, including: sending, by the network device, first indication information and second indication information to the user equipment, where the first indication information is used to indicate a frequency domain resource of a physical random access channel of the user equipment, the second indication information is physical layer control signaling, the second indication information is used to indicate a time domain resource of the physical random access channel, and a random access resource corresponding to the frequency domain resource and the time domain resource is used to carry random access information of the user equipment. In the embodiments of the present invention, a resource of a random access channel is dynamically indicated by using the physical layer control signaling, to improve random access resource allocation flexibility.
    Type: Application
    Filed: November 12, 2018
    Publication date: March 14, 2019
    Inventors: Chi ZHANG, Junchao LI, Zhengwei GONG
  • Publication number: 20190081769
    Abstract: A resource determining method is provided. The method includes: determining a time domain position and a resource unit type of a first time domain resource unit based on first configuration information; determining a time domain position of a second time domain resource unit based on the time domain position of the first time domain resource unit, where the time domain position of the second time domain resource unit is at a time domain position which is different from the time domain position of the first time domain resource unit and is within a preset time period; and receiving second configuration information from a network-side device, and determining a resource unit type of the second time domain resource unit based on the second configuration information. Thus, subframe types of various subframes in D-TDD can be determined.
    Type: Application
    Filed: November 9, 2018
    Publication date: March 14, 2019
    Inventors: Chi ZHANG, Xiaojun MA, Junchao LI, Zhengwei GONG
  • Publication number: 20180368145
    Abstract: A method, system, and device for resource block (RB) indexing in a user equipment (UE) is provided. In an embodiment, the method includes obtaining, at the UE, a UE-independent frequency reference point. The method also includes determining, by the UE, a UE-independent index of an RB according to the UE-independent frequency reference point.
    Type: Application
    Filed: March 8, 2018
    Publication date: December 20, 2018
    Inventors: Javad Abdoli, Zhenfei Tang, Junchao Li, Hao Tang