Patents Assigned to NTT DoCoMo, Inc.
  • Publication number: 20240090067
    Abstract: A terminal according to one aspect of the present disclosure includes a receiving section that receives a medium access control-control element (MAC CE) indicating two active transmission configuration indicator (TCI) states for one control resource set, and a control section that, when an information element of a radio link monitoring (RLM) reference signal is not provided, uses a reference signal in at least one TCI state out of the two active TCI states for RLM. According to one aspect of the present disclosure, it is possible to appropriately perform at least one of RLM and BFD.
    Type: Application
    Filed: January 8, 2021
    Publication date: March 14, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Satoshi Nagata, Weiqi Sun, Jing Wang, Lan Chen
  • Publication number: 20240090054
    Abstract: A terminal includes a communication unit configured to perform communication to which dual connectivity is applied with a base station, a receiving unit configured to receive signaling indicating whether terminal-triggered secondary cell group activation or deactivation is enabled from the base station, a transmitting unit configured to transmit a response to the signaling to the base station, and a control unit configured to perform the secondary cell group activation or deactivation based on the signaling.
    Type: Application
    Filed: March 4, 2021
    Publication date: March 14, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Kouhei Harada, Akihito Hanaki, Masato Taniguchi
  • Publication number: 20240090012
    Abstract: A terminal comprises: a reception unit that receives a reference signal used for a purpose other than a measurement related to a radio resource management; and a control unit that performs the measurement related to the radio resource management using the reference signal.
    Type: Application
    Filed: January 26, 2021
    Publication date: March 14, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Hiroki Harada, Daisuke Kurita, Mayuko Okano, Satoshi Nagata, Masaya Okamura, Tomoya Ohara
  • Publication number: 20240089986
    Abstract: A terminal according to an aspect of the present disclosure includes a control section that determines whether two physical downlink control channel (PDCCH) candidates out of a plurality of PDCCH candidates can be allocated, and a receiving section that receives the two PDCCH candidates, when it is determined that the two PDCCH candidates can be allocated. The two PDCCH candidates are present within a same slot or a same span. The two PDCCH candidates are associated with two search space sets. The two PDCCH candidates are linked to each other. When it is determined that the two PDCCH candidates cannot be allocated, the control section determines whether one or more PDCCH candidates out of the plurality of PDCCH candidates can be allocated. According to an aspect of the present disclosure, PDCCH candidates can be appropriately determined.
    Type: Application
    Filed: January 18, 2021
    Publication date: March 14, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Satoshi Nagata, Weiqi Sun, Jing Wang, Lan Chen
  • Publication number: 20240089955
    Abstract: A terminal according to one aspect of the present disclosure includes a receiving section that receives information related to a transmission path for at least a part of UL data; and a control section that determines at least one of a transmission method of the UL data and a second terminal other than the terminal, the second terminal being notified of at least the part of the UL data, based on at least one of the information related to the transmission path and downlink control information used for scheduling of the UL data.
    Type: Application
    Filed: January 29, 2021
    Publication date: March 14, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Satoshi Nagata, Haruhi Echigo, Naoya Shibaike
  • Publication number: 20240089987
    Abstract: A wireless communication method is disclosed that includes receiving, via downlink control information (DCI) or higher layer signaling, configuration information including a parameter and configuring aperiodic Sounding Reference Signal (SRS) (A-SRS) transmission based on the parameter. In other aspects, a terminal and a wireless communication system are also disclosed.
    Type: Application
    Filed: January 21, 2022
    Publication date: March 14, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Nadisanka Rupasinghe, Yuki Matsumura
  • Publication number: 20240089773
    Abstract: A terminal according to one aspect of the present disclosure includes: a control section that determines a first resource for interference measurement corresponding to a first transmission/reception point or a second resource for interference measurement corresponding to a second transmission/reception point, based on at least one of a first resource for channel measurement corresponding to the first transmission/reception point and a second resource for channel measurement corresponding to the second transmission/reception point; and a transmitting section that transmits a channel state information report, based on the first resource for interference measurement and the second resource for interference measurement. According to one aspect of the present disclosure, it is possible to appropriately perform measurement and report of CSI for multi-panel/TRP.
    Type: Application
    Filed: January 14, 2021
    Publication date: March 14, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Satoshi Nagata, Jing Wang, Lan Chen
  • Publication number: 20240088973
    Abstract: The present disclosure provides a beam selection method and a network element. The network element includes a first network element in a communication network, including: a receiving unit configured to receive measurement results of a terminal for first information transmitted via at least a part of first beams; a processing unit configured to determine a preferred beam from a plurality of second beams according to measurement results of the first information transmitted via more than two first beams; and a transmitting unit configured to transmit information about the preferred beam.
    Type: Application
    Filed: December 28, 2020
    Publication date: March 14, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Xufei Zheng, Liu Liu, Hiroyuki Kawai, Lan Chen, Tianyang Min
  • Patent number: 11930501
    Abstract: The present invention is designed to realize appropriate communication in next generation communication systems. a control section that controls communication by using a radio frame that includes a plurality of transmission time intervals (TTIs), in which the downlink and the uplink can be switched, and a given TTI, which is for DL transmission and which is configured in a given cycle, and a receiving section that receives a synchronization signal and a broadcast signal in the given TTI are provided.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: March 12, 2024
    Assignee: NTT DOCOMO, INC.
    Inventors: Hiroki Harada, Kazuki Takeda, Yoshihisa Kishiyama, Satoshi Nagata
  • Patent number: 11930502
    Abstract: A terminal is disclosed including a receiver that monitors downlink control channel candidates in a predetermined frequency bandwidth out of a plurality of frequency bandwidths; and a processor that performs a control to change the predetermined frequency bandwidth in accordance with a predetermined timer. In another aspect, a radio communication method is also disclosed.
    Type: Grant
    Filed: March 2, 2021
    Date of Patent: March 12, 2024
    Assignee: NTT DOCOMO, INC.
    Inventors: Kazuki Takeda, Kazuaki Takeda, Satoshi Nagata, Qin Mu, Lihui Wang
  • Patent number: 11930560
    Abstract: A user apparatus includes a reception unit that receives, from a base station, information requesting a capability report of the user apparatus; a transmission unit that transmits, to the base station, the capability report of the user apparatus; and a control unit that receives a first signal transmitted from the base station, and a second signal transmitted from another base station or a third signal transmitted from the base station, within a maximum receive timing difference associated with a band combination included in the capability report of the user apparatus, wherein the band combination includes a combination of a band of the first signal and a band of the second signal or the third signal, a radio access technology for the first signal differs from that of the second signal, and the radio access technologies for the first signal and for the third signal are the same.
    Type: Grant
    Filed: February 21, 2019
    Date of Patent: March 12, 2024
    Assignee: NTT DOCOMO, INC.
    Inventors: Takuma Takada, Yuta Oguma
  • Patent number: 11930518
    Abstract: In order to appropriately control the reception of a CSI-RS, one aspect of user terminal of the present disclosure includes: a receiving section that receives a channel state information reference signal based on downlink control information; a transmitting section that transmits given information related to the minimum number of symbols between the downlink control information and the channel state information reference signal; and a control section that performs a control an operation of receiving the channel state information reference signal according to a value of the given information.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: March 12, 2024
    Assignee: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Satoshi Nagata
  • Patent number: 11930553
    Abstract: A terminal is disclosed including a receiver that receives an instruction for a quality measurement of a cell in Dual Connectivity (DC), the cell being in an unconnected state; and a processor that performs the quality measurement in accordance with the instruction, wherein the processor performs the quality measurement in a measurement period based on a discontinuous reception configuration in a Secondary Cell Group (SCG). In other aspects, a measurement method for a terminal is also disclosed.
    Type: Grant
    Filed: August 9, 2018
    Date of Patent: March 12, 2024
    Assignee: NTT DOCOMO, INC.
    Inventors: Takuma Takada, Hiroki Harada, Naoki Fujimura
  • Patent number: 11930457
    Abstract: A terminal according to one aspect of the present disclosure includes: a control section that determines a power control parameter for a physical uplink shared channel (PUSCH), based on reception of a medium access control control element (MAC CE); and a transmitting section that transmits the PUSCH by using transmission power based on the power control parameter. According to one aspect of the present disclosure, a parameter for transmission power control can be appropriately determined.
    Type: Grant
    Filed: June 13, 2019
    Date of Patent: March 12, 2024
    Assignee: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Satoshi Nagata
  • Publication number: 20240080140
    Abstract: A terminal comprising: a control unit that performs feedback control to transmit two or more acknowledgments over one physical uplink control channel, wherein the control unit performs, when the two or more acknowledgments include a first acknowledgment with a first priority and a second acknowledgment with a second priority different from the first priority, the feedback control using a resource related to a specific acknowledgment of either the first acknowledgment or the second acknowledgment.
    Type: Application
    Filed: January 15, 2021
    Publication date: March 7, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Takahashi, Satoshi Nagata, Qiping Pi, Jing Wang, Lan Chen
  • Publication number: 20240080809
    Abstract: A terminal according to one aspect of the present disclosure includes: a control section that determines a downlink control channel (Physical Downlink Control Channel (PDCCH)) to monitor from among PDCCHs in a plurality of control resource sets (CORESETs) overlapping in time, based on a CORESET having two transmission configuration indication states (TCI states) being activated; and a receiving section that monitors the determined PDCCH. According to one aspect of the present disclosure, it is possible to appropriately address collision of a plurality of downlink control channels.
    Type: Application
    Filed: January 14, 2021
    Publication date: March 7, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Satoshi Nagata, Weiqi Sun, Jing Wang, Lan Chen
  • Publication number: 20240080810
    Abstract: A radio communication node includes: a control unit that a first communication using a first radio link with a lower node and a second communication using a second radio link with a terminal, wherein the control unit: controls the first communication using a first radio resource based on a configuration of a radio resource used in the first radio link, when performing a simultaneous communication of the first communication and the second communication, and performs the first communication using a second radio resource at least including the first radio resource when a condition is satisfied not to perform the simultaneous communication of the first communication and the second communication.
    Type: Application
    Filed: January 15, 2021
    Publication date: March 7, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Daisuke Kurita, Hiroki Harada, Weiqi Sun, Jing Wang, Lan Chen
  • Publication number: 20240080929
    Abstract: A terminal according to an aspect of the present disclosure includes a receiving section that receives information indicating a plurality of transmission configuration indication (TCI) states, and receives downlink control information including a field of at least one of one or more TCI states of the plurality of TCI states, a serving cell index, an HARQ timing indicator, a downlink assignment index, a time domain resource assignment, and a physical uplink control channel resource indicator, and a control section that applies the one or more TCI states to a plurality of kinds of signals. According to an aspect of the present disclosure, the TCI state indication can be appropriately performed.
    Type: Application
    Filed: January 15, 2021
    Publication date: March 7, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Satoshi Nagata, Jing Wang
  • Publication number: 20240080822
    Abstract: A terminal configures bandwidth resources narrower than a normal minimum unit when specific condition is met or specific notification is received. The terminal performs transmission operation with the bandwidth resources configured.
    Type: Application
    Filed: January 22, 2021
    Publication date: March 7, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Hiroki Harada, Satoshi Nagata, Daisuke Kurita, Naoya Shibaike
  • Patent number: 11924831
    Abstract: A user equipment includes a control unit that controls transmission or reception of a sidelink signal in which a first resource and a second resource are multiplexed in a same slot, wherein at least one of SLSS (Sidelink synchronization signal) or PSBCH (Physical Sidelink Broadcast Channel) is allocated in the first resource, and at least one of PSCCH (Physical Sidelink Control Channel), PSSCH (Physical Sidelink Shared Channel), and PSDCH (Physical Sidelink Discovery Channel) is allocated in the second resource; a reception unit that monitors the first resource, the second resource, or the first resource and the second resource; and a transmission unit that performs transmission using any one of the first resource, the second resource, and the first resource and the second resource.
    Type: Grant
    Filed: August 10, 2018
    Date of Patent: March 5, 2024
    Assignee: NTT DOCOMO, INC.
    Inventors: Ryosuke Osawa, Huan Wang, Xiaolin Hou