Patents by Inventor Chongning Na

Chongning Na 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: 20210144029
    Abstract: An embodiment of the present invention provides a sounding reference signal (SRS) transmission method, a base station, and a user equipment, the SRS transmission method including: generating SRS configuration information for at least two UEs, such that an SRS of a first type of UE of the at least two UEs is non-orthogonal with an SRS of a second type of UE of the at least two UEs; transmitting the SRS configuration information of the at least two UEs.
    Type: Application
    Filed: June 15, 2018
    Publication date: May 13, 2021
    Applicant: NTT DOCOMO, INC.
    Inventors: Xin WANG, Chongning NA, Lilin DAN, Jie YANG, Yi ZHANG, Yue XIAO
  • Publication number: 20210120557
    Abstract: The present invention is designed to appropriately select PUCCH resources used to transmit HARQ-ACK. According to one aspect of the present invention, a user terminal has a control section that monitors candidate resources of one or more downlink (DL) control channels (DL) transmitted in multiple different time and/or frequency resources, and detects one or more downlink control information (DCI), and a transmission section that transmits delivery acknowledgment information in response to a downlink (DL) data channel by using an uplink (UL) control channel, and the control section selects resources for the UL control channel based on the DCI.
    Type: Application
    Filed: March 17, 2017
    Publication date: April 22, 2021
    Applicant: NTT DOCOMO, INC.
    Inventors: Kazuki Takeda, Satoshi Nagata, Qin Mu, Liu Liu, Chongning Na, Xin Wang, Jing Wang, Lihui Wang, Min Liu, Huiling Jiang
  • Publication number: 20210120574
    Abstract: A terminal is disclosed including a receiver that receives a downlink control information and a downlink shared channel that is scheduled by the downlink control information. The terminal also includes a processor that determines an allocation of the downlink shared channel in a time domain based on a first timing indicated by a first time unit and a second timing indicated by a second time unit that are obtained from information notified by the downlink control information. In other aspects, a radio communication method is also disclosed.
    Type: Application
    Filed: March 17, 2017
    Publication date: April 22, 2021
    Applicant: NTT DOCOMO, INC.
    Inventors: Kazuki Takeda, Satoshi Nagata, Qin Mu, Liu Liu, Chongning Na, Xin Wang, Jing Wang, Lihui Wang, Min Liu, Huiling Jiang
  • Publication number: 20210111773
    Abstract: A method of beam information feedback in a wireless communication system is disclosed including transmitting, from a base station (BS) to a user equipment (UE), reference signals using multiple beams, and transmitting, from the UE to the BS, first feedback information that indicates at least one of a first correlation level between a pair of beams within each of beam groups and a second correlation level between a pair of the beam groups. The multiple beams are grouped into the beam groups.
    Type: Application
    Filed: March 22, 2018
    Publication date: April 15, 2021
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuichi Kakishima, Chongning Na, Min Liu, Huiling Jiang, Satoshi Nagata
  • Patent number: 10972168
    Abstract: A user equipment (UE) includes a receiver that receives a Reference Signal (RS) from a base station (BS), and a transmitter that transmits, to the BS, only precoding-related information used for precoding in the BS in response to the RS. The precoding-related information is at least one of a RS Resource Indicator (RRI) that identifies a radio resource used for RS BS transmission, a Precoding Matrix Indicator (PMI), a Rank indicator (RI), and a Reference Signal Received Power (RSRP). The transmitter only periodically transmits the only precoding-related information. The receiver receives a signal precoded using the precoding-related information by the BS.
    Type: Grant
    Filed: February 3, 2017
    Date of Patent: April 6, 2021
    Assignee: NTT DOCOMO, INC.
    Inventors: Yuichi Kakishima, Satoshi Nagata, Chongning Na
  • Publication number: 20210067288
    Abstract: A user equipment (UE) is disclosed including a receiver that receives resource set information that indicates the number of selectable Channel State Information Reference Signal (CSI-RS) resources between a first CSI-RS group and a second CSI-RS group, CSI-RSs using first CSI-RS resources in the first CSI-RS group, and CSI-RSs using second CSI-RS resources in the second CSI-RS group. The UE includes a processor that selects at least a CSI-RS resource from the first CSI-RS resources and the second CSI-RS resources based on the resource set information. The UE includes a transmitter that performs CSI reporting that indicates the selected CSI-RS resource.
    Type: Application
    Filed: January 14, 2019
    Publication date: March 4, 2021
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuichi Kakishima, Chongning Na, Min Liu, Satoshi Nagata
  • Publication number: 20210058133
    Abstract: To appropriately configure frequency resources used for a beam failure recovery procedure, a user terminal includes: a transmitting section that transmits a beam failure recovery request when detecting a beam failure; a receiving section that receives a response to the beam failure recovery request; and a control section that controls determination of at least one of a frequency resource used to transmit the beam failure recovery request, and a frequency resource used to receive the response.
    Type: Application
    Filed: December 27, 2017
    Publication date: February 25, 2021
    Applicant: NTT DOCOMO, INC.
    Inventors: Kazuki Takeda, Satoshi Nagata, Lihui Wang, Chongning Na, Xiaolin Hou
  • Publication number: 20210058797
    Abstract: A terminal is disclosed including a processor that increments a beam failure instance counter in a higher layer, based on a beam failure instance indication received from a physical layer; a transmitter that, when the beam failure instance counter is greater than or equal to a predetermined threshold, transmits a random access preamble based on a transmission instruction from the higher layer; and a receiver that monitors, within a predetermined response window period, a physical downlink control channel (PDCCH) for a response to the random access preamble based on a predetermined search space setting. In another aspect, a radio communication method for a terminal is also disclosed.
    Type: Application
    Filed: January 17, 2019
    Publication date: February 25, 2021
    Applicant: NTT DOCOMO, INC.
    Inventors: Shohei Yoshioka, Satoshi Nagata, Min Liu, Jing Wang, Chongning Na, Yuichi Kakishima
  • Publication number: 20210058932
    Abstract: To determine an appropriate spatial resource for an uplink control channel. A user terminal includes a receiving section that receives, by a higher layer, a plurality of pieces of spatial relation information related to spatial resources for an uplink control channel, and receives, through a medium access control-control element, indication information indicating at least one piece of spatial relation information associated with at least one uplink control channel resource among the plurality of pieces of spatial relation information, and a control section that determines a partial band to which the indication information is applied, and controls transmission of an uplink control channel in the partial band by using the at least one piece of spatial relation information and the at least one uplink control channel resource.
    Type: Application
    Filed: March 7, 2018
    Publication date: February 25, 2021
    Applicant: NTT Docomo, Inc.
    Inventors: Kazuki TAKEDA, Satoshi NAGATA, Tooru UCHINO, Lihui WANG, Chongning NA, Xiaolin HOU
  • Publication number: 20210058218
    Abstract: To properly perform communication also in the case of supporting activation of a plurality of BWPs, a user terminal according to one aspect of the present disclosure has a receiving section that receives downlink control information for indicating activation of a predetermined BWP among one or more partial frequency bands (BWP: Bandwidth Part) configured within a carrier, and a control section that controls activation of one or a plurality of BWPs based on at least one of the downlink control information, MAC control information and higher layer signaling.
    Type: Application
    Filed: February 15, 2018
    Publication date: February 25, 2021
    Applicant: NTT DOCOMO, INC.
    Inventors: Hiroki Harada, Satoshi Nagata, Jing Wang, Chongning Na
  • Publication number: 20210058129
    Abstract: To perform a beam failure recovery procedure by using an appropriate radio resource, a user terminal includes a transmitting section that transmits a beam failure recovery request, and a control section that controls transmission of the beam failure recovery request by using at least one of an uplink shared channel, an uplink control channel, a sounding reference signal, and a random access channel indicated by a downlink control channel.
    Type: Application
    Filed: December 27, 2017
    Publication date: February 25, 2021
    Applicant: NTT DOCOMO, INC.
    Inventors: Kazuki Takeda, Satoshi Nagata, Lihui Wang, Chongning Na, Xiaolin Hou
  • Publication number: 20210037589
    Abstract: A terminal is disclosed including a processor that increments a beam failure instance counter, in a higher layer, based on a beam failure instance indication received from a physical layer; and a transmitter that, when the beam failure instance counter is greater than or equal to a given threshold, transmits a random access preamble based on a transmission instruction from the higher layer. In another aspect, a radio communication method for a terminal is also disclosed.
    Type: Application
    Filed: January 17, 2019
    Publication date: February 4, 2021
    Applicant: NTT DOCOMO, INC.
    Inventors: Shohei Yoshioka, Satoshi Nagata, Min Liu, Jing Wang, Chongning Na, Yuichi Kakishima
  • Publication number: 20210037526
    Abstract: A user terminal, according to the present invention, has a receiving section that receives resource information, which indicates a single or a plurality of uplink control channel resources, per configuration identifier related to channel state information (CSI) reporting, and a control section that selects an uplink control channel resource to use to transmit a plurality of CSIs, based on the resource information.
    Type: Application
    Filed: February 14, 2018
    Publication date: February 4, 2021
    Applicant: NTT DOCOMO, INC.
    Inventors: Kazuki Takeda, Satoshi Nagata, Huiling Li, Lihui Wang, Chongning Na, Xiaolin Hou
  • Publication number: 20210037406
    Abstract: A user terminal according to one aspect of the present disclosure includes a receiving section that receives information indicating start of report of semi-persistent channel state information (SP-CSI (Semi-Persistent Channel State Information) report), and a control section that determines timing of the SP-CSI report, based on whether or not there is relation between timing of a feedback report for reception of the information and the timing of the SP-CSI report. According to one aspect of the present disclosure, SP-CSI report and/or detection can be appropriately controlled even when SP-CSI report activation is indicated by using MAC CEs (Medium Access Control Control Elements).
    Type: Application
    Filed: February 14, 2018
    Publication date: February 4, 2021
    Applicant: NTT DOCOMO, INC.
    Inventors: Kazuki Takeda, Satoshi Nagata, Huiling Li, Lihui Wang, Chongning Na, Xiaolin Hou
  • Publication number: 20210029733
    Abstract: To appropriately control UL transmission such as a CSI reporting when performing communication by applying a different configuration from those of legacy LTE systems, a user terminal according to one aspect of the present disclosure includes: a transmission section that transmits one or more UL signals by using an uplink shared channel based on an instruction from a base station; and a control section that controls the transmission assuming that transmission durations of a plurality of UL signals do not overlap in a same symbol, or, when at least part of the transmission durations of the plurality of UL signals overlap in the same symbol, performs control to select and transmit the part of the UL signals.
    Type: Application
    Filed: March 22, 2018
    Publication date: January 28, 2021
    Applicant: NTT DOCOMO, INC.
    Inventors: Kazuki Takeda, Satoshi Nagata, Huiling Li, Lihui Wang, Chongning Na, Xin Wang, Xiaolin Hou
  • Patent number: 10892809
    Abstract: Provided are a method and apparatus for transmitting CSI feedback information for multiple beams. The method includes: transmitting information for indicating a type of the CSI feedback information; transmitting a first type of CSI feedback information in the CSI feedback information for the multiple beams by using a first type of CSI feedback manner, wherein the first type of CSI feedback information includes at least first transmission rank information, first channel quality information and feedback information for a first beam in the multiple beams; and transmitting a second type of CSI feedback information in the CSI feedback information for the multiple beams by using a second type of CSI feedback manner, wherein the second type of CSI feedback information includes at least second transmission rank information, second channel quality information, and feedback information for beams other than the first beam in the multiple beams.
    Type: Grant
    Filed: March 2, 2018
    Date of Patent: January 12, 2021
    Assignee: NTT DOCOMO, INC.
    Inventors: Huiling Li, Chongning Na, Yuichi Kakishima, Satoshi Nagata
  • Patent number: 10892808
    Abstract: A method of acquiring Channel State Information (CSI) in a wireless communication system includes transmitting, from a Base Station (BS) to a User Equipment (UE), a resource setting including time-domain behavior of CSI-Reference Signals (RSs) transmission that designates aperiodic, periodic, or semi-persistent; and transmitting, from the BS to the UE, the CSI-RSs based on the designated aperiodic, periodic, or semi-persistent. The resource setting includes precoding information that indicates whether precoders applied to the CSI-RSs is the same or different. The resource setting includes periodicity and a timing offset value of the CSI-RS transmission when the periodic or the semi-persistent is designated. The resource setting includes frequency-domain information that designates a wideband or a partial band used for the CSI-RS transmission. The resource setting includes a transmission bandwidth of the CSI-RS transmission when the partial band is designated.
    Type: Grant
    Filed: January 5, 2018
    Date of Patent: January 12, 2021
    Assignee: NTT DOCOMO, INC.
    Inventors: Yuichi Kakishima, Chongning Na, Satoshi Nagata, Kazuaki Takeda
  • Publication number: 20200403676
    Abstract: A method of Channel State Information (CSI) reporting in a wireless communication system includes receiving, with a user equipment (UE), CSI Reference Signals (CSI-RSs) from a base station (BS), calculating, with the UE, first parameters of Type I CSI and second parameters of Type II CSI based on the CSI-RS, and reporting, from the UE to the BS, Type I CSI including first parameters and Type II CSI including second parameters using a Physical Uplink Control Channel (PUCCH) based on the CSI-RSs. The first parameters and the second parameters are multiplexed in order of the second parameters and the first parameters or in order of high priority parameters of the first and second parameters and low priority parameters of the first and second parameters.
    Type: Application
    Filed: January 11, 2019
    Publication date: December 24, 2020
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuichi Kakishima, Satoshi Nagata, Li Huiling, Chongning Na, Xin Wang
  • Publication number: 20200396664
    Abstract: A method of performing a beam failure recovery procedure in a user equipment (UE) that includes a Physical (PHY) layer and a Medium Access Control (MAC) layer includes detecting, with the PHY layer, a beam failure for a beam used for communication between the UE and a base station (BS), receiving, with the MAC layer, one or more beam failure instances from the PHY layer, transmitting, from the MAC layer to the PHY layer, a request for a candidate beam based on a number of the beam failure instances, reporting, from the PHY layer to the MAC layer, first beam information that indicates the candidate beam, and causing, with the MAC layer, the PHY layer to transmit, to the BS, a beam failure recovery request that indicates the candidate beam.
    Type: Application
    Filed: February 15, 2019
    Publication date: December 17, 2020
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuichi Kakishima, Satoshi Nagata, Jing Wang, Min Liu, Chongning Na, Shohei Yoshioka
  • Publication number: 20200374038
    Abstract: A method and an apparatus for rate matching interleaving for polar codes are provided. The method includes: obtaining a first codeword bit sequence; dividing the first codeword bit sequence to obtain one or more segments; performing intra-segment and/or inter-segment interleaving on the one or more segments to generate an interleaved bit sequence.
    Type: Application
    Filed: August 10, 2018
    Publication date: November 26, 2020
    Applicant: NTT DOCOMO, INC.
    Inventors: Runxin WANG, Chongning NA, Satoshi NAGATA