Patents Assigned to NTT Docomo
  • Publication number: 20250097719
    Abstract: A terminal includes: a communication unit configured to perform transmission and reception in a first RAT (Radio Access Technology) and to perform sensing in a second RAT; and a control unit configured to control communications in the first RAT. The communication unit receives information related to a first resource reservation by another terminal in the first RAT, the communication unit detects information related to a second resource reservation by another terminal in the second RAT, the control unit determines a set of resources based on a result of performing, based on information related to the first resource reservation, resource exclusion from available resource candidates in the first RAT in a physical layer, and selects a resource from the set of resources based on the information related to the second resource reservation in a MAC (Medium Access Control) layer, and the communication unit performs transmission to another terminal by using the selected resource.
    Type: Application
    Filed: January 19, 2022
    Publication date: March 20, 2025
    Applicant: NTT DOCOMO, INC.
    Inventors: Shohei Yoshioka, Naoya Shibaike, Satoshi Nagata
  • Publication number: 20250097981
    Abstract: A terminal according to one aspect of the present disclosure includes: a transmitting section that transmits a message in a random access procedure in a physical uplink shared channel; and a control section that controls a plurality of repetitions of at least one of reception of a downlink channel for scheduling the physical uplink shared channel and transmission of a channel the physical uplink shared channel. According to one aspect of the present disclosure, coverage can be improved by taking account of overhead.
    Type: Application
    Filed: July 30, 2021
    Publication date: March 20, 2025
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Haruhi Echigo, Hiroki Harada, Naoya Shibaike, Satoshi Nagata
  • Publication number: 20250093949
    Abstract: An AR system includes an acquisition unit configured to acquire a user state, an identification unit configured to identify gazed content which is content at which a content sharing source user is gazing, a first decision unit configured to decide whether or not to share the gazed content with other users, a second decision unit configured to identify a content sharing destination candidate user having a strong relationship with the content sharing source user on the basis of user states of the content sharing source user and one or more content sharing destination candidate users when the gazed content is shared with the other users and decide on the identified content sharing destination candidate user as a content sharing destination user, and a sharing unit configured to share the gazed content with the content sharing destination user.
    Type: Application
    Filed: July 20, 2022
    Publication date: March 20, 2025
    Applicant: NTT DOCOMO, INC.
    Inventors: Taishi YAMAMOTO, Eriko OSEKI, Kouki HAYASHI, Osamu GOTO, Mikio IWAMURA, Shinji KIMURA, Masayuki YOKOO
  • Publication number: 20250097909
    Abstract: A terminal according to an aspect of the present disclosure includes: a receiving section that receives configuration information including one or more of time resource configurations and/or frequency resource configurations; and a control section that determines, based on the configuration information and an ID related to a Public Land Mobile Network (PLMN), at least one of a time resource and a frequency resource to be used for at least one of a downlink signal and an uplink signal. An aspect of the present disclosure allows operation of communication to be flexibly performed between operators.
    Type: Application
    Filed: January 17, 2022
    Publication date: March 20, 2025
    Applicant: NTT DOCOMO, INC.
    Inventors: Shinya Kumagai, Mayuko Okano, Hiroki Harada, Satoshi Nagata
  • Publication number: 20250097917
    Abstract: A terminal according to one aspect of the present disclosure includes a receiving section that receives first configuration information related to use of a frequency to which shared spectrum channel access is applied, and second configuration information for configuring a resource in which frequency division multiplexing of a downlink (DL) resource and an uplink (UL) resource is available, and a control section that controls, based on the first configuration information and the second configuration information, use of the resource in which the frequency division multiplexing is available in the frequency applied with the shared spectrum channel access. According to one aspect of the present disclosure, it is possible to enhance efficiency of resource use.
    Type: Application
    Filed: January 14, 2022
    Publication date: March 20, 2025
    Applicant: NTT DOCOMO, INC.
    Inventors: Hiroki Harada, Daisuke Kurita, Mayuko Okano, Kousuke Shima, Masaya Okamura, Tomoya Ohara
  • Publication number: 20250097953
    Abstract: A terminal includes: a control unit configured to determine an operation related to PDCCH (Physical Downlink Control Channel) monitoring, based on a search space set group; and a reception unit configured to perform the determined operation related to the monitoring. The control unit determines not to perform PDCCH monitoring in a case where a condition related to the search space set group is satisfied.
    Type: Application
    Filed: August 6, 2021
    Publication date: March 20, 2025
    Applicant: NTT DOCOMO, INC.
    Inventors: Tomoya Ohara, Takuma Nakamura
  • Publication number: 20250097788
    Abstract: A radio base station includes: a control unit that controls an execution of a procedure for an addition/change of a secondary cell; a reception unit that receives a first message relating to the secondary cell from another base station; and a transmission unit that transmits a second message including update information of an execution condition of the procedure for the addition/change to another base station when receiving the first message.
    Type: Application
    Filed: July 28, 2021
    Publication date: March 20, 2025
    Applicant: NTT DOCOMO, INC.
    Inventors: Souki Watanabe, Tianyang Min
  • Publication number: 20250094632
    Abstract: A privacy-protected data aggregation device (10) includes: an attribute information encryption unit (13) that encrypts attribute information in user data to be aggregated, which includes a plurality of pieces of attribute information, using a homomorphic encryption method enabling aggregation processing; an aggregation processing unit (14) that aggregates user data with encrypted attribute information, for all combinations of possible values of the plurality of pieces of attribute information in domain data that defines possible values of each of the pieces of attribute information included in the user data, to obtain aggregated data including an aggregation result and encrypted attribute information; an anonymization processing unit (15) that performs anonymization processing on the aggregated data; and a decryption unit (16) that decrypts aggregated data subjected to the anonymization processing to obtain aggregated data including an aggregation result after the anonymization processing and decrypted attrib
    Type: Application
    Filed: November 29, 2022
    Publication date: March 20, 2025
    Applicant: NTT DOCOMO, INC.
    Inventors: Kazuma NOZAWA, Keita HASEGAWA, Tomohiro NAKAGAWA, Hiroshi AONO, Masayuki TERADA
  • Publication number: 20250095030
    Abstract: A recommendation system includes: a user information acquiring unit configured to acquire user information; a content determining unit configured to determine content to be recommended on the basis of the user information; an expression determining unit configured to determine an expression when the determined content is recommended to the user on the basis of the user information; a difficulty information acquiring unit configured to acquire difficulty information indicating a degree of difficulty with which a user adopts a behavior with respect to the determined content; a behavior information acquiring unit configured to acquire behavior information indicating a behavior of a user with respect to a recommendation; and a learning unit configured to learn a recommendation expression determining method in consideration of the degree of difficulty on the basis of the difficulty information and the behavior information.
    Type: Application
    Filed: February 2, 2023
    Publication date: March 20, 2025
    Applicant: NTT DOCOMO, INC.
    Inventors: Yukiko YOSHIKAWA, Yuki KATSUMATA, Takashi SUZUKI
  • Patent number: 12255746
    Abstract: A terminal according to an aspect of the present disclosure includes: a receiving section that receives downlink control information for releasing a plurality of semi-persistent schedulings (SPSs); and a control section that performs control of including a valid Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK) corresponding to the downlink control information at at least one of a plurality of positions of HARQ-ACKs corresponding to downlink shared channel (Physical Downlink Shared Channel (PDSCH)) reception of the plurality of SPSs in a semi-static HARQ-ACK codebook. According to an aspect of the present disclosure, the HARQ-ACK codebook can be appropriately determined even when joint SPS release is used.
    Type: Grant
    Filed: September 17, 2019
    Date of Patent: March 18, 2025
    Assignee: NTT DOCOMO, INC.
    Inventors: Yuki Takahashi, Satoshi Nagata, Xiaohong Zhang, Shaozhen Guo, Lihui Wang, Xiaolin Hou
  • Patent number: 12255707
    Abstract: A terminal includes a reception unit configured to receive information associated with a signal transmitted to an apparatus other than the terminal, in MU-MIMO (MultiUser-Multiple Input Multiple Output) and a reference signal from a base station, a control unit configured to estimate interference from the signal transmitted to the apparatus other than the terminal to a signal transmitted to the terminal, based on the information associated with the signal transmitted to the apparatus other than the terminal and the reference signal, and a communication unit configured to suppress the interference and receive a data signal from the base station.
    Type: Grant
    Filed: August 15, 2019
    Date of Patent: March 18, 2025
    Assignee: NTT DOCOMO, INC.
    Inventors: Yuichi Kakishima, Yuki Matsumura, Satoshi Nagata
  • Patent number: 12256438
    Abstract: A terminal includes a receiver that receives an index specifying configuration information for transmitting a random access preamble; and a controller that configures, in response to the receiver receiving additional information that specifies a time domain resource for transmitting the random access preamble, the time domain resource specified by the additional information, the time domain resource being configured by replacing a time domain resource for transmitting the random access preamble included in the configuration information specified by the index with the time domain resource specified by the additional information.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: March 18, 2025
    Assignee: NTT DOCOMO, INC.
    Inventors: Hideaki Takahashi, Akihito Hanaki, Hiroki Harada, Tomoya Ohara
  • Patent number: 12255839
    Abstract: A user terminal has a control section that makes a determination of at least one of a band of monitoring for at least one of a reference signal and a downlink control channel, and operation of the monitoring, in a frequency band to which sensing of a channel is applied, based on at least one of notified configuration information and reported capability information, and a receiving section that performs the monitoring according to the determination. According to one aspect of the present disclosure, it is possible to perform proper communication in an unlicensed band.
    Type: Grant
    Filed: February 14, 2019
    Date of Patent: March 18, 2025
    Assignee: NTT DOCOMO, INC.
    Inventors: Hiroki Harada, Daisuke Murayama
  • Patent number: 12256336
    Abstract: A terminal according to an aspect of the present disclosure includes a receiving section that receives a pathloss reference signal, and a control section that calculates a pathloss for transmission power control on the basis of layer 1 (L1)-reference signal received power (RSRP) for the pathloss reference signal when the pathloss reference signal is updated by a media access control-control element (MAC CE), and a measurement condition is met. According to an aspect of the present disclosure, the pathloss can be appropriately calculated.
    Type: Grant
    Filed: November 8, 2019
    Date of Patent: March 18, 2025
    Assignee: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Yuichi Kakishima, Satoshi Nagata
  • Publication number: 20250089027
    Abstract: A terminal includes: a communication unit configured to perform communication with a base station that can perform transmission and reception using a same time and frequency resource based on configuration of an uplink resource and a downlink resource; and a control unit configured to control an operation of the communication unit based on a gap between a timing of uplink transmission performed in the uplink resource and a timing of downlink reception performed in the downlink resource.
    Type: Application
    Filed: January 14, 2022
    Publication date: March 13, 2025
    Applicant: NTT DOCOMO, INC.
    Inventors: Masaya Okamura, Shinya Kumagai, Shohei Yoshioka, Yuki Takahashi, Mayuko Okano
  • Publication number: 20250089068
    Abstract: A terminal according to one aspect of the present disclosure includes a receiving section that receives control information for mapping one or more TCI states to a codepoint of one transmission configuration indication (TCI) field and that receives one or more pieces of downlink control information (DCI) for indicating a first TCI state applicable to a plurality of types of first signals and a second TCI state applicable to a plurality of types of second signals, and a control section that applies the first TCI state to the first signals and that applies the second TCI state to the second signals, based on the control information and the codepoint of the TCI field included in the DCI.
    Type: Application
    Filed: January 7, 2022
    Publication date: March 13, 2025
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Satoshi Nagata, Jing Wang, Weiqi Sun
  • Publication number: 20250088331
    Abstract: A terminal includes: a transmission unit configured to transmit, in uplink, a reference signal for positioning; and a control unit configured to assume that resources of the reference signal for positioning are to be non-contiguously allocated.
    Type: Application
    Filed: January 27, 2022
    Publication date: March 13, 2025
    Applicant: NTT DOCOMO, INC.
    Inventors: Masaya Okamura, Tomoya Ohara, Kousuke Shima, Hiroki Harada, Daisuke Kurita, Mayuko Okano
  • Publication number: 20250089065
    Abstract: A terminal according to one aspect of the present disclosure includes a receiving section that receives a configuration indicating that disabling or enabling of a transform precoder for a physical downlink shared channel (PUSCH) is dynamically switched by at least one of downlink control information (DCI) and a Medium Access Control Control Element (MAC CE), and a control section that uses, as a period from reception of the DCI until transmission of the PUSCH, a second period longer than a first period in a case where the waveform is not switched. According to one aspect of the present disclosure, it is possible to easily perform switching of a waveform.
    Type: Application
    Filed: August 4, 2021
    Publication date: March 13, 2025
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Akihito Hanaki, Tianyang Min, Keisuke Saito, Hidekazu Shimodaira, Satoshi Nagata
  • Publication number: 20250089079
    Abstract: A terminal includes: a reception unit configured to receive control information using a downlink; a control unit configured to perform monitoring of the control information for each of a plurality of slots; and a transmission unit configured to transmit, using uplink, terminal capability information that indicates whether or not, to support scheduling of a plurality of downlink signals by a single control information, the terminal capability information being specified in accordance with a number of the plurality of slots.
    Type: Application
    Filed: January 11, 2022
    Publication date: March 13, 2025
    Applicant: NTT DOCOMO, INC.
    Inventors: Mayuko Okano, Naoya Shibaike, Hiroki Harada
  • Publication number: 20250089061
    Abstract: A terminal according to one aspect of the present disclosure includes a receiving section that receives a Medium Access Control control element (MAC Control Element (CE)) including a field indicating a time period from a given timing until activation of a transmission configuration indication state (TCI state), and a control section that controls the activation of the TCI state based on the MAC CE. According to one aspect of the present disclosure, it is possible to implement suitable maintenance of communication quality.
    Type: Application
    Filed: August 5, 2021
    Publication date: March 13, 2025
    Applicant: NTT DOCOMO, INC.
    Inventors: Haruhi Echigo, Hiroki Harada, Yuki Matsumura, Naoya Shibaike, Satoshi Nagata