Patents by Inventor Huiling JIANG

Huiling JIANG 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).

  • Method and apparatus for controlling power
    Patent number: 10313987
    Abstract: The present disclosure provides a method for controlling a power, comprising: determining an average basic transmission power of all User Equipments (UEs) in a cell in each first resource; for each first resource, determining a UE group scheduled in the first resource and a first transmission power allocation factor corresponding to the UE group according to the average basic transmission power. The present disclosure also provides an apparatus for controlling a power. According to the present disclosure, a base station determines a UE group scheduled in each subband and a transmission power for each UE in the UE group.
    Type: Grant
    Filed: March 11, 2016
    Date of Patent: June 4, 2019
    Assignee: NTT DoCoMo, Inc.
    Inventors: Anxin Li, Huiling Jiang
  • Base station, mobile station and radio communication method
    Patent number: 10312982
    Abstract: To generate a configuration entry in a master codebook. A base station according to one aspect of the present invention includes a codebook generating unit that determines a codebook subset corresponding to a predetermined configuration entry from a plurality of configuration entries in a master codebook, and a transmitter that transmits information of the predetermined configuration entry.
    Type: Grant
    Filed: October 18, 2016
    Date of Patent: June 4, 2019
    Assignee: NTT DOCOMO, INC.
    Inventors: Satoshi Nagata, Chongning Na, Huiling Jiang, Yuichi Kakishima
  • USER EQUIPMENT AND SIGNAL TRANSMISSION METHOD
    Publication number: 20190159224
    Abstract: There is provided user equipment of a radio communication system that supports D2D communication. The user equipment includes a storage that stores a Gap pattern indicating a Gap period repeatedly configured in a radio resource for UL; and a transmitter that transmits a signal of D2D communication in a Gap period indicated by the Gap pattern stored in the storage.
    Type: Application
    Filed: April 14, 2017
    Publication date: May 23, 2019
    Applicant: NTT DOCOMO, INC.
    Inventors: Shimpei Yasukawa, Satoshi Nagata, Qun Zhao, Liu Liu, Anxin Li, Huiling Jiang
  • Access Method And Access Device
    Publication number: 20190159145
    Abstract: Provided is an access method, which is applied to a user equipment. The access method includes: acquiring an initial receiving target power of a base station to be accessed by the user equipment; setting candidate retransmission levels of an initial access signal of the user equipment based on the initial receiving target power; selecting a retransmission level for the user equipment from the candidate retransmission levels; and retransmitting the initial access signal to the base station according to the selected retransmission level to access a network. The technical solution of accessing in the embodiments of this disclosure enables a user equipment to retransmit an initial access signal using an appropriate retransmission solution, thereby increasing the spectrum utilization efficiency and saving the transmission power of the user equipment.
    Type: Application
    Filed: January 22, 2019
    Publication date: May 23, 2019
    Applicant: NTT DoCoMo, Inc.
    Inventors: Liu LIU, Qin MU, Huiling JIANG
  • Method for optimizing rank of channel matrix, wireless base and mobile station
    Patent number: 10298308
    Abstract: Embodiments of present invention provide a method for optimizing the rank of channel matrix, a wireless base and a mobile station. The method for optimizing the rank of channel matrix according to an embodiment of the present invention is applied to a wireless base to which multiple mobile stations are connected. The method includes: obtaining the historical state data of the multiple mobile stations; determining the optimal rank of channel matrix of a first mobile station of the multiple mobile stations according to the obtained historical state data of the multiple mobile stations; and transmitting to the first mobile station the optimal rank indicator indicating the optimal rank so as to cause the first mobile station to set its rank of channel matrix to be the optimal rank indicated by the optimal rank indicator.
    Type: Grant
    Filed: March 2, 2016
    Date of Patent: May 21, 2019
    Assignee: NTT DoCoMo, Inc.
    Inventors: Xiaohang Chen, Anxin Li, Huiling Jiang
  • USER TERMINAL, RADIO BASE STATION AND RADIO COMMUNICATION METHOD
    Publication number: 20190149984
    Abstract: The present invention provides a method for configuring a hybrid automatic repeat request (HARQ) mode in a base station, a communication method for use by user terminal supporting communication capabilities of the first type, a base station and user terminal. This user terminal includes a transmission section that transmits information about a capability for supporting HARQ bundling, to a radio base station, and the transmission section transmits bundled HARQ-ACKs to the radio base station based on the capability.
    Type: Application
    Filed: August 10, 2017
    Publication date: May 16, 2019
    Applicant: NTT DOCOMO, INC.
    Inventors: Kazuaki Takeda, Satoshi Nagata, Naoto Ookubo, Qin Mu, Liu Liu, Huiling Jiang
  • USER TERMINAL AND RADIO COMMUNICATION METHOD
    Publication number: 20190150202
    Abstract: The present invention is designed to be able to suitably implement random access procedures even when LAA is used. A user terminal according to one aspect of the present invention has a control section that controls a random access procedure for a carrier where listening is performed before uplink transmission, and a receiving section that receives downlink control information for identifying a plurality of subframes that serve as PRACH transmission candidates, and a transmission section that transmits a PRACH based on the downlink control information and a listening result, and the control section controls reception of a response signal in response to transmission of the PRACH, based on an index of a subframe where the PRACH has been transmitted successfully, among the plurality of subframes that serve as the PRACH transmission candidates.
    Type: Application
    Filed: May 11, 2017
    Publication date: May 16, 2019
    Applicant: NTT DOCOMO, INC.
    Inventors: Hiroki Harada, Satoshi Nagata, Lihui Wang, Liu Liu, Huiling Jiang
  • USER TERMINAL, RADIO BASE STATION, RADIO COMMUNICATION METHOD AND RADIO COMMUNICATION SYSTEM
    Publication number: 20190150000
    Abstract: A user terminal is disclosed that includes a processor that determines a predetermined period based on information about a configuration of sensing. The user terminal further includes a receiver that performs a sensing before transmitting signals in the predetermined period. A radio communication method for a user terminal is also disclosed that includes determining a predetermined period based on information about the configuration of sensing and performing a sensing before transmitting signals in the predetermined period.
    Type: Application
    Filed: January 10, 2019
    Publication date: May 16, 2019
    Applicant: NTT DOCOMO, INC.
    Inventors: Kazuki Takeda, Hiroki Harada, Satoshi Nagata, Lihui Wang, Liu Liu, Huiling Jiang
  • USER TERMINAL AND RADIO COMMUNICATION METHOD
    Publication number: 20190140878
    Abstract: The present invention is designed to suitably support transmission of uplink control information even when shortened TTIs are used. According to one aspect of the present invention, a user terminal that communicates using a shortened transmission time interval (TTI), in which the TTI duration is shorter than one ms, has a control section that controls transmission of uplink control information, and a transmission section that transmits the uplink control information in a predetermined shortened TTI, using an uplink control channel format, which is for shortened TTIs and which is compatible with multiple TTI durations.
    Type: Application
    Filed: May 11, 2017
    Publication date: May 9, 2019
    Applicant: NTT DOCOMO, INC.
    Inventors: Kazuki Takeda, Satoshi Nagata, Lihui Wang, Liu Liu, Huiling Jiang
  • USER TERMINAL, RADIO BASE STATION AND RADIO COMMUNICATION METHOD
    Publication number: 20190124678
    Abstract: The present invention is designed to realize appropriate reporting of information about the allocation of UL signals. A user terminal has a receiving section that receives downlink control information including uplink resource allocation information, a control section that determines, based on the uplink resource allocation information, a resource block (RB) allocation pattern that is repeated every given-number of resource blocks, and a transmitting section that transmits a UL signal by using a plurality of resource blocks that are determined based on the RB allocation pattern.
    Type: Application
    Filed: March 30, 2017
    Publication date: April 25, 2019
    Applicant: NTT DOCOMO, INC.
    Inventors: Hiroki Harada, Satoshi Nagata, Lihui Wang, Liu Liu, Huiling Jiang
  • Mobile station, radio base station, and radio communication method
    Patent number: 10270501
    Abstract: According to an aspect of the present invention, a mobile station, which carries out communication using a plurality of antenna ports, includes a receiving section configured to receive, from a radio base station, first-amount information that indicates a number of antenna ports in a first dimension, and second-amount information that indicates a number of antenna ports in a second dimension; and a transmitting section configured to transmit, to the radio base station, a precoding matrix codebook index that is obtained using the first-amount information and/or the second-amount information. Accordingly, a mobile station, a radio base station and a radio communication method can be provided in which a precoding matrix for a two-dimensional antenna array can be generated with flexibility.
    Type: Grant
    Filed: April 8, 2016
    Date of Patent: April 23, 2019
    Assignee: NTT DOCOMO, INC.
    Inventors: Satoshi Nagata, Yuichi Kakishima, Chongning Na, Xiaolin Hou, Huiling Jiang
  • USER TERMINAL AND RADIO COMMUNICATION METHOD
    Publication number: 20190116005
    Abstract: In scheduling transmission of UL data in a plurality of subframes using single DCI, asynchronous re-transmission control of this UL data is appropriately performed. A user terminal according to an aspect of the present invention includes a receiving section that receives downlink control information (DCI) and a control section that controls transmission of an uplink shared channel in each of a plurality of subframes based on the DCI. The control section determines an HARQ process number (HPN) to use in each of the plurality of subframes based on a HPN field included in the DCI.
    Type: Application
    Filed: March 30, 2017
    Publication date: April 18, 2019
    Applicant: NTT DOCOMO, INC.
    Inventors: Hiroki Harada, Satoshi Nagata, Yu Jiang, Liu Liu, Huiling Jiang
  • USER TERMINAL, RADIO BASE STATION AND RADIO COMMUNICATION METHOD
    Publication number: 20190116489
    Abstract: The present invention is designed to suitably realize UCI (Uplink Control Information) transmission at a desired timing in a carrier where LBT (Listen Before Talk) is configured. A user terminal, according to one embodiment of the present invention, has a transmission section that transmits signals in carriers where listening is performed before uplink transmission, a receiving section that receives PUCCH cell configuration information as to whether or not at least one of the carriers is a cell where a PUCCH (Physical Uplink Control Channel) is transmitted, and a control section that controls the transmission of uplink control information (UCI) in the carriers based on the PUCCH cell configuration information.
    Type: Application
    Filed: March 30, 2017
    Publication date: April 18, 2019
    Applicant: NTT DOCOMO, INC.
    Inventors: Hiroki Harada, Satoshi Nagata, Liu Liu, Lihui Wang, Huiling Jiang
  • USER TERMINAL, RADIO BASE STATION AND RADIO COMMUNICATION METHOD
    Publication number: 20190116615
    Abstract: The present invention is designed to perform random access procedures adequately in a carrier in which LBT (Listen Before Talk) is configured. A user terminal, according to one aspect of the present invention, has a control section that controls random access procedures for a carrier where listening is performed before uplink transmission, a receiving section that receives downlink control information including information about a period that is formed with a plurality of transmission time intervals (TTIs) in which a random access preamble can be transmitted, and a transmission section that transmits the random access preamble in the period, in the carrier, in response to receipt of the downlink control information.
    Type: Application
    Filed: March 29, 2017
    Publication date: April 18, 2019
    Applicant: NTT DOCOMO, INC.
    Inventors: Hiroki Harada, Satoshi Nagata, Lihui Wang, Liu Liu, Huiling Jiang
  • USER TERMINAL, RADIO BASE STATION AND RADIO COMMUNICATION METHOD
    Publication number: 20190116562
    Abstract: The present invention relates to reducing the decrease of uplink throughput in the event a user terminal connects with a plurality of radio base stations. In one aspect of the claimed invention, a user terminal includes a transmitter that performs transmission in a first cell group (CG) and a second CG, and a processor that, if the transmitter reports user terminal capability information indicating that the user terminal is capable of sharing transmission power dynamically and if transmission in the first CG overlaps in time with transmission in the second CG, scales transmission power of the second CG so that total transmission power of the transmission in the first CG and the transmission in the second CG does not exceed maximum allowable power.
    Type: Application
    Filed: November 28, 2018
    Publication date: April 18, 2019
    Applicant: NTT DOCOMO, INC.
    Inventors: Kazuki Takeda, Liu Liu, Lihui Wang, Huiling Jiang
  • USER EQUIPMENT, BASE STATION, AND BROADCAST INFORMATION RECEPTION METHOD
    Publication number: 20190116547
    Abstract: A user equipment in a mobile communication system including a base station and the user equipment, including: a mode determining unit that receives instruction information indicating a transmission mode of broadcast information from the base station and determines the transmission mode based on the instruction information; and a receiving unit that performs a reception operation of the broadcast information according to the transmission mode determined by the mode determining unit.
    Type: Application
    Filed: March 29, 2017
    Publication date: April 18, 2019
    Inventors: Yousuke Sano, Kazuaki Takeda, Satoshi Nagata, Qin Mu, Liu Liu, Huiling Jiang
  • Base station, user equipment, and method for determining precoding matrix
    Patent number: 10256886
    Abstract: A base station that communicates with a user equipment using multiple antenna ports includes an uplink channel estimation unit that estimates uplink channel states, a downlink channel estimation unit that estimates downlink channel states based on the estimated uplink channel states and channel reciprocity of uplink and downlink, a receiver unit that receives from the user equipment CSI feedback information, and a precoder generating unit that determines a precoding matrix of downlink based on Channel State Information (CSI) indicating the estimated downlink channel states and on the CSI feedback information.
    Type: Grant
    Filed: June 11, 2015
    Date of Patent: April 9, 2019
    Assignee: NTT DOCOMO, INC.
    Inventors: Yuichi Kakishima, Satoshi Nagata, Chongning Na, Xiaolin Hou, Huiling Jiang
  • RADIO BASE STATION, USER TERMINAL AND RADIO COMMUNICATION METHOD
    Publication number: 20190090251
    Abstract: A radio base station that communicates with a user terminal by using a plurality of component carriers (CCs) in which listening is configured, includes a transmitter that transmits downlink (DL) signals in each CC; and a processor that controls transmission of the DL signals in each CC based on a result of the listening in the plurality of CCs. The processor controls allocation of power based on a total number of CCs that make transmission in each subframe after the listening.
    Type: Application
    Filed: September 23, 2016
    Publication date: March 21, 2019
    Applicant: NTT DOCOMO, INC.
    Inventors: Hiroki Harada, Satoshi Nagata, Jing Wang, Liu Liu, Huiling Jiang
  • BASE STATION, MOBILE STATION AND RADIO COMMUNICATION METHOD
    Publication number: 20190075490
    Abstract: The present invention is designed to provide a master information block (MIB) suitable for an NB-IoT communication system. A base station according to an embodiment of the present invention includes a generation section that generates a master information block (MIB) including parameters selected based on an operation mode during narrow band communication, and a transmission section that transmits the MIB.
    Type: Application
    Filed: March 14, 2017
    Publication date: March 7, 2019
    Applicant: NTT DOCOMO, INC.
    Inventors: Satoshi Nagata, Qin Mu, Liu Liu, Huiling Jiang
  • Method and apparatus for re-transmitting data
    Patent number: 10225763
    Abstract: The present disclosure provides a method for re-transmitting data, wherein the method at a User Equipment (UE) side comprises: receiving, by a UE, a re-transmitted data packet from a base station, determining whether to perform data combination according to a Signal to Interference-Noise Ratio (SINR) of a first-transmitted data packet and a SINR of the re-transmitted data packet; when it is determined to perform data combination, performing, by the UE, data combination for the re-transmitted data packet according to information buffered by the UE and detecting the re-transmitted data packet according to a result of performed data combination; or when it is determined not to perform data combination, detecting, by the UE, the re-transmitted data packet. The present disclosure also provides a method for re-transmitting data at a base station side and a UE for implementing the above method.
    Type: Grant
    Filed: February 16, 2016
    Date of Patent: March 5, 2019
    Assignee: NTT DoCoMo, Inc.
    Inventors: Anxin Li, Huiling Jiang