Patents Assigned to NTT Docomo
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Publication number: 20250159468Abstract: A terminal includes: a reception unit configured to receive a terminal capability enquiry from a base station; a control unit configured to determine, from among terminal capabilities for TN (Terrestrial Network) and terminal capabilities for NTN (Non-Terrestrial Network), at least one terminal capability to be reported; and a transmission unit configured to transmit the terminal capability to be reported. The terminal capability is a terminal capability for a case of supporting a narrow band IoT (Internet of Things) or coverage enhancement.Type: ApplicationFiled: February 13, 2023Publication date: May 15, 2025Applicant: NTT DOCOMO, INC.Inventor: Hiroki Harada
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Publication number: 20250159494Abstract: A terminal includes: a transmission unit configured to transmit a plurality of first signals including a synchronization signal and a broadcast channel to a first terminal by applying different beams to the plurality of first signals; a reception unit configured to receive a second signal corresponding to at least one of the plurality of first signals by using a parameter corresponding to a beam that is applied to one of the first signals; and a control unit configured to establish an RRC (Radio Resource Control) connection with the first terminal according to transmission and reception using the parameter.Type: ApplicationFiled: February 3, 2022Publication date: May 15, 2025Applicant: NTT DOCOMO, INC.Inventors: Shohei Yoshioka, Naoya Shibaike, Satoshi Nagata
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Publication number: 20250158412Abstract: An objective is to provide a direct current (DC) power supply system capable of maximally generating electric power in a solar power generation process in consideration of an operation state of a load device serving as a power supply destination. In a rectifier (100), a traffic volume acquisition unit (102a) acquires an operation state (traffic volume) of a communication device (300), and a power calculation unit (102b) acquires power consumption of the communication device (300) corresponding to the traffic volume. Moreover, the power calculation unit (102b) acquires output power from the rectifier (100). A power comparison unit (102d) acquires electric power generated by a solar power generation device (200) on the basis of power consumption (W) of the communication device (300) and output power (P?) of the rectifier (100).Type: ApplicationFiled: January 12, 2023Publication date: May 15, 2025Applicant: NTT DOCOMO, INC.Inventors: Masaki NAKAMURA, Tomoki TATSUNO, Kazuhiko TAKENO
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Publication number: 20250157090Abstract: A display control apparatus includes a destination acquirer configured to acquire at least one destination to which a message is to be transmitted, the at least one destination corresponding to a location in a real space, with the location corresponding to a position in a virtual space at which position a virtual object relating to the message has been placed, based on location information indicative of the location in the real space, and correspondence information indicative of a correspondence between the location in the real space and the at least one destination, to which the message is to be transmitted; and a display controller configured to cause a display device to display the virtual space including both the virtual object and a destination image representative of the at least one destination.Type: ApplicationFiled: January 23, 2023Publication date: May 15, 2025Applicant: NTT DOCOMO, INC.Inventors: Tomohito YAMASAKI, Susumu SEKINO
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Patent number: 12302244Abstract: A base station apparatus including: a transmission unit configured to transmit configuration information indicating whether to place both of a first activation signal and a second activation signal on a resource for placing an activation signal that is a trigger for monitoring a paging occasion, wherein the configuration information implicitly indicates configuration other than configuration indicating whether to place both of the first activation signal and the second activation signal on the resource.Type: GrantFiled: April 9, 2020Date of Patent: May 13, 2025Assignee: NTT DOCOMO, INC.Inventors: Daiki Takeda, Hiroki Harada
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Publication number: 20250146823Abstract: An arrival time determining device that can accurately estimate a timing of arrival at a predetermined position. A mobile terminal 100 includes at least a user motion determining unit 102, an estimated arrival time calculating unit 104, and an arrival time determining unit 105. The user motion determining unit 102 determines a user motion (a stopped state or a boarding state) based on motion sensor information of the mobile terminal 100. The estimated arrival time calculating unit 104 calculates a time (time A) at which the mobile terminal 100 has arrived at a destination as an estimated arrival time test based on a position of the mobile terminal 100 and the user motion (when the user is in the stopped state). The arrival time determining unit 105 determines the estimated arrival time test as a result arrival time tres based on the user motion (when the user is in the boarding state). The result arrival time tres is used to next calculate the estimated arrival time test.Type: ApplicationFiled: August 24, 2022Publication date: May 8, 2025Applicant: NTT DOCOMO, INC.Inventors: Yusuke NAKAMURA, Tetsuya YAMAGUCHI, Takuya IZUMISAWA, Akinari SAKAI
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Publication number: 20250150865Abstract: A terminal according to an aspect of the present disclosure includes: a receiving section that, when a first reference signal set for beam failure detection and a second reference signal set for a candidate beam, or a third reference signal set for the beam failure detection and a fourth reference signal set for the candidate beam instead of the first reference signal set and the second reference signal set are supported, receives one of information related to the second reference signal set and information related to the fourth reference signal set; and a control section that, when information related to the first reference signal set and information related to the third reference signal set are not provided, determines a reference signal set to be used for the beam failure detection, based on one of the information related to the second reference signal set and the information related to the fourth reference signal set.Type: ApplicationFiled: February 14, 2022Publication date: May 8, 2025Applicant: NTT DOCOMO, INC.Inventors: Yuki Matsumura, Satoshi Nagata, Jing Wang, Lan Chen
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Publication number: 20250150844Abstract: A radio base station performs a beam search with a plurality of stages in which at least any of a beam width to be searched and the number of beam candidates to be searched is different, and transmits and receives data at a required rate. The radio base station performs the beam search including a first stage and a second stage after an end of the first stage having a beam width that is narrower than a beam width of the first stage and the number of beam candidates that is larger than the number of beam candidates of the first stage, starts transmitting and receiving the data immediately after the end of the first stage, when the required rate is a specified rate or less, and starts transmitting and receiving the data after an end of the second stage, when the required rate is more than the specified rate.Type: ApplicationFiled: February 22, 2022Publication date: May 8, 2025Applicant: NTT DOCOMO, INC.Inventors: Tatsuki Okuyama, Satoshi Suyama, Nobuhide Nonaka
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Publication number: 20250151052Abstract: A terminal according to an aspect of the present disclosure includes: a receiving section that receives first downlink control information for scheduling a first UL channel and second downlink control information for scheduling a second UL channel; and a control section that controls at least one of application of first UE operation related to transmission of the first channel and transmission of the second channel in a time domain and application of second UE operation related to order of transmission of each of the downlink control information and each of the UL channels, based on whether or not respective panels or transmission/reception points (TRPs) corresponding to the first downlink control information and the second downlink control information are same.Type: ApplicationFiled: February 10, 2022Publication date: May 8, 2025Applicant: NTT DOCOMO, INC.Inventors: Yuki Matsumura, Satoshi Nagata, Jing Wang, Lan Chen
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Publication number: 20250150979Abstract: A terminal according to one aspect of the present disclosure includes a control section that determines a plurality of groups including a plurality of resources for a physical random access channel, determines one or more pathloss reference signals for the plurality of groups, and determines a plurality of pieces of transmission power corresponding to the plurality of respective resources, based on the one or more pathloss reference signals; and a transmitting section that transmits a plurality of repetitions of the physical random access channel in the plurality of resources. According to one aspect of the present disclosure, a coverage of a random access procedure can be improved.Type: ApplicationFiled: May 20, 2022Publication date: May 8, 2025Applicant: NTT DOCOMO, INC.Inventors: Naoya SHIBAIKE, Yuki MATSUMURA, Satoshi NAGATA, Qiping PI, Jing WANG, Lan CHEN, Yiyi LU, Yong LI
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Publication number: 20250151144Abstract: A terminal includes: a transmission unit configured to transmit, in a first link, a message for establishing a connection in a second link in which the connection is not established; a reception unit configured to receive a response corresponding to the message for establishing the connection in the second link; and a control unit configured to assume that the establishing of the connection in the second link is completed when the response is received.Type: ApplicationFiled: February 1, 2022Publication date: May 8, 2025Applicant: NTT DOCOMO, INC.Inventors: Shohei Yoshioka, Naoya Shibaike, Satoshi Nagata
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Publication number: 20250151156Abstract: A terminal includes: a reception unit configured to receive control information from a base station indicating an indication related to a discontinuous reception function for the base station to disable a receiver unit; and a control unit configured to determine whether or not the base station has enabled the discontinuous reception function, based on the control information.Type: ApplicationFiled: February 15, 2022Publication date: May 8, 2025Applicant: NTT DOCOMO, INC.Inventors: Yuki Takahashi, Satoshi Nagata
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Patent number: 12295040Abstract: A terminal includes a receiving unit that receives, from a base station, a parameter for a random access procedure; a control unit that determines a time domain location of the PUSCH slot based on a time domain location of a Physical Random Access Channel (RACH) slot, subcarrier spacing of the RACH slot, subcarrier spacing of a Physical Uplink Shared Channel (PUSCH) slot, and the parameter; and a transmitting unit that transmits, at the determined time domain location, the PUSCH to the base station.Type: GrantFiled: February 24, 2021Date of Patent: May 6, 2025Assignee: NTT DOCOMO, INC.Inventor: Tomoya Ohara
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Patent number: 12294553Abstract: In a case of using a different frequency band that is different from a frequency band including one or a plurality of frequency ranges, a terminal applies initial access configurations including a format of an initial access signal, the format being different from that for the frequency band. The terminal transmits the initial access signal via an initial access channel set based on the applied initial access configurations.Type: GrantFiled: October 25, 2019Date of Patent: May 6, 2025Assignee: NTT DOCOMO, INC.Inventors: Daisuke Kurita, Hiroki Harada, Tomoya Ohara, Satoshi Nagata
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Patent number: 12295016Abstract: A terminal according to one aspect of the present disclosure includes a receiving section that receives downlink control information (DCI) for scheduling a downlink shared channel of a multicast; and a control section that controls transmission of Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK) with respect to the downlink shared channel based on the DCI, wherein the DCI is common to a plurality of terminals. According to one aspect of the present disclosure, a PDSCH using the multicast can be appropriately received.Type: GrantFiled: March 27, 2020Date of Patent: May 6, 2025Assignee: NTT DOCOMO, INC.Inventors: Yuki Matsumura, Satoshi Nagata
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Patent number: 12294889Abstract: A terminal includes a transmission unit that transmits a request for channel state information and one or more shared channels including a reference signal to another terminal, a control unit that configures a latency bound for a channel state report triggered by the request, and a reception unit that receives the channel state report triggered by the request, before the latency bound from the other terminal, wherein the control unit performs at least one of: an operation of controlling the channel state report based on reception of a HARQ feedback in a case where the reception unit receives the HARQ feedback corresponding to the request; and an operation of configuring a specific latency bound for each of multiple requests for the channel state information in a case where the transmission unit transmits the multiple requests for the channel state information corresponding to a channel state report event.Type: GrantFiled: February 21, 2020Date of Patent: May 6, 2025Assignee: NTT DOCOMO, INC.Inventors: Shohei Yoshioka, Satoshi Nagata
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Publication number: 20250142439Abstract: A terminal can control an execution of a conditional handover and an execution of a procedure for an addition/change of a secondary cell, and transmit a radio resource control layer message. When the conditional handover and the procedure for the addition/change are configured simultaneously, or when an execution condition of the conditional handover and an execution condition of the procedure for the addition/change are met simultaneously, the terminal prioritizes either the conditional handover or the procedure for the addition/change according to a state of the message.Type: ApplicationFiled: August 16, 2022Publication date: May 1, 2025Applicant: NTT DOCOMO, INC.Inventors: Tianyang Min, Masato Taniguchi, Souki Watanabe
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Publication number: 20250142553Abstract: A terminal includes: a reception unit configured to receive downlink data to which semi-persistent scheduling is applied in a communication with a base station via a satellite or a flying object; and a control unit configured to determine a timing of reception of the downlink data to which the semi-persistent scheduling is applied, based on a timing of feedback transmission corresponding to an indication of a start of the semi-persistent scheduling.Type: ApplicationFiled: September 30, 2021Publication date: May 1, 2025Applicant: NTT DOCOMO, INC.Inventors: Shohei Yoshioka, Daisuke Kurita, Satoshi Nagata, Jing Wang, Wenjia Liu
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Publication number: 20250141262Abstract: A terminal includes: a reception unit configured to receive a power supplying signal from another device and to receive power supply; and a control unit configured to control an operation of receiving the power supplying signal. The power supplying signal includes a signal used for energy harvesting and a signal used for a purpose other than the energy harvesting, and the another device includes a base station and another terminal.Type: ApplicationFiled: August 24, 2021Publication date: May 1, 2025Applicant: NTT DOCOMO, INC.Inventors: Tomoya Ohara, Shinya Kumagai, Daisuke Kurita, Takuma Nakamura
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Publication number: 20250142521Abstract: A base station in a network system includes: a transmission unit configured to transmit a first reference signal to a terminal via a first non-terrestrial communication device; and a reception unit configured to receive information related to a reception timing at the terminal from the terminal. The transmission unit transmits information related to a propagation delay of the first reference signal and information related to the reception timing to LMF (Location Management Function), and the information related to the reception timing is a time difference between a reception timing of the first reference signal and a reception timing of a second reference signal that is transmitted from the base station or from a second base station that is different from the base station via a second non-terrestrial communication device.Type: ApplicationFiled: February 21, 2022Publication date: May 1, 2025Applicant: NTT DOCOMO, INC.Inventors: Shohei Yoshioka, Satoshi Nagata, Luhua You, Weiqi Sun, Jing Wang, Lan Chen, Jinming Zhao, Yong Li