Patents Assigned to NTT Docomo
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Patent number: 12004172Abstract: To appropriately control half-duplex communication in a future radio communication system, one aspect of a user terminal according to the present disclosure includes: a reception section that receives slot format information that indicates a slot format of a cell; and a control section, when transmission and reception in transmission directions are instructed, performs control to perform transmission and reception in a given cell and to not perform transmission and reception in another cell based on a method for instructing transmission and reception in each cell, the transmission directions being different between a plurality of cells for which slot formats are configured to flexible.Type: GrantFiled: November 22, 2018Date of Patent: June 4, 2024Assignee: NTT DOCOMO, INC.Inventors: Kazuki Takeda, Satoshi Nagata, Lihui Wang, Shaozhen Guo
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Patent number: 12003324Abstract: To appropriately perform communications even when a random access procedure with less steps than existing steps is performed, an aspect of a user terminal according to the present disclosure includes a transmitting section that transmits a UL signal including a random access preamble and a certain message, a receiving section that receives a DL signal transmitted in response to the UL signal, and a control section that determines whether to retransmit the UL signal, based on at least one of a period since reception of the DL signal, an indication content of the DL signal, and a content of a bit field configured for a downlink control channel included in the DL signal.Type: GrantFiled: February 15, 2019Date of Patent: June 4, 2024Assignee: NTT DOCOMO, INC.Inventors: Kazuki Takeda, Satoshi Nagata, Lihui Wang
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Patent number: 12004085Abstract: A user terminal according to one aspect of the present disclosure includes: a control section that determines transmit power in a transmission occasion in a period of uplink transmission over a plurality of slots, the transmission occasion being a period of a whole of the uplink transmission or a period of transmission in one slot in the uplink transmission; and a transmitting section that uses the transmit power in the transmission occasion.Type: GrantFiled: February 14, 2019Date of Patent: June 4, 2024Assignee: NTT DOCOMO, INC.Inventors: Kazuki Takeda, Satoshi Nagata, Lihui Wang
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Patent number: 12001793Abstract: An object is to provide an interaction server in which inputs of an input keyword are reduced and the number of exchanges in interaction is reduced as a result. An interaction server 100 includes a truth table 104 configured to have question sentences including a sentence to be provided to a user and a plurality of searching keywords associated with, and a relational table 105 configured to have one main keyword and a plurality of related keywords related to the main keyword associated with each other. A search unit 102 acquires at least one of the one main keyword and any of the plurality of related keywords listed in the relational table 105 on the basis of an input keyword, further performs searching in the truth table 104 using the main keyword and/or the related keyword which has been acquired, and acquires a question sentence candidate which is response content corresponding to the main keyword or the related keyword.Type: GrantFiled: December 28, 2018Date of Patent: June 4, 2024Assignee: NTT DOCOMO, INC.Inventors: Hiroshi Fujimoto, Takanori Hashimoto, Yuriko Ozaki
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Patent number: 12004171Abstract: A user terminal includes: a receiving section that monitors a physical downlink control channel for system information or paging in a connected mode; and a control section that determines a downlink reference signal that is quasi-co-location for the physical downlink control channel based on at least one of association between a physical downlink control channel monitoring occasion and a downlink reference signal and configuration information indicating a downlink reference signal that is quasi-co-location for a control resource set including the physical downlink control channel. According to an aspect of the present disclosure, a physical downlink control channel can be appropriately monitored.Type: GrantFiled: September 21, 2018Date of Patent: June 4, 2024Assignee: NTT DOCOMO, INC.Inventors: Hiroki Harada, Kazuki Takeda, Yuki Matsumura
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Publication number: 20240179712Abstract: A terminal according to one aspect of the present disclosure includes: a receiving section that receives a signal for judgment of a plurality of terminals sharing uplink data; and a control section that controls one of reception of the uplink data from another terminal of the plurality of terminals and transmission of the uplink data to the other terminal, based on the signal. According to one aspect of the present disclosure, coverage can be improved.Type: ApplicationFiled: March 31, 2021Publication date: May 30, 2024Applicant: NTT DOCOMO, INC.Inventors: Daisuke Kurita, Shinya Kumagai, Hiroki Harada, Satoshi Nagata, Tomoya Ohara, Takuma Nakamura
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Publication number: 20240179707Abstract: A terminal according to an aspect of the present disclosure includes: a receiving section that receives, without receiving at least one of a broadcast channel (PBCH), a physical downlink control channel (PDCCH), and a physical downlink shared channel carrying system information (RMSI PDSCH), another channel or signal in an initial access procedure; and a control section that performs control in the initial access procedure on a basis of the other channel or signal. According to an aspect of the present disclosure, the payload size for configuration of the initial access can be reduced.Type: ApplicationFiled: March 31, 2021Publication date: May 30, 2024Applicant: NTT DOCOMO, INC.Inventors: Daisuke Kurita, Hiroki Harada, Mayuko Okano, Satoshi Nagata, Tomoya Ohara, Masaya Okamura
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Publication number: 20240178982Abstract: A terminal according to one aspect of the present disclosure includes a receiving section that receives indication information about switching of a transmission configuration indication (TCI) state for a plurality of serving cells, and a control section that determines delay time for application of a TCI state in TCI state switching based on information related to a quasi-co-location (QCL) source reference signal (RS) in the TCI state in each serving cell of the plurality of serving cells and the indication information. According to one aspect of the present disclosure, it is possible to perform TCI state indication appropriately.Type: ApplicationFiled: March 25, 2021Publication date: May 30, 2024Applicant: NTT DOCOMO, INC.Inventors: Yuki Matsumura, Satoshi Nagata, Jing Wang, Weiqi Sun
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Publication number: 20240179770Abstract: A radio communication node includes a connection unit capable of connecting with multiple radio communication nodes having a same or different function or role, and controls connection performed by the connection unit.Type: ApplicationFiled: March 22, 2021Publication date: May 30, 2024Applicant: NTT DOCOMO, INC.Inventors: Daisuke Kurita, Haruhi Echigo, Shohei Yoshioka, Shinya Kumagai, Yuki Takahashi, Yuki Hokazono, Satoshi Nagata
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Publication number: 20240179688Abstract: A terminal receives control information indicating allocation of a physical uplink shared channel in a time domain and allocates the physical uplink shared channel across multiple slots. Based on the control information, the terminal determines a transport block to be transmitted over the physical uplink shared channel.Type: ApplicationFiled: March 24, 2021Publication date: May 30, 2024Applicant: NTT DOCOMO, INC.Inventors: Haruhi Echigo, Hiroki Harada, Daisuke Kurita
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Patent number: 11996946Abstract: A communication apparatus includes a control unit that separately defines, for unicast and for groupcast, a Hybrid Automatic Repeat Request (HARQ) process number and a New Data Indicator (NDI) used for sidelink HARQ processing; and a transmitting unit that transmits sidelink control information including the HARQ process number and the NDI defined for the unicast, or including the HARQ process number and the NDI defined for the groupcast.Type: GrantFiled: April 2, 2019Date of Patent: May 28, 2024Assignee: NTT DOCOMO, INC.Inventors: Shohei Yoshioka, Satoshi Nagata, Huan Wang
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Patent number: 11997675Abstract: One aspect of a user terminal according to the present invention includes: a receiving section that receives downlink control information that is common between groups including one or more user terminals from at least one of a plurality of Transmission/Reception Points (TRPs) that transmit downlink shared channels; and a control section that determines a TRP that becomes an application target of the downlink control information. Consequently, it is possible to appropriately perform a UE-group common signalling even when multiple TRPs are used.Type: GrantFiled: March 14, 2019Date of Patent: May 28, 2024Assignee: NTT DOCOMO, INC.Inventors: Yuki Matsumura, Satoshi Nagata, Jing Wang, Xiaolin Hou
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Patent number: 11997713Abstract: To appropriately control transmission of a channel when listening is performed for each given band in a carrier. A transmission apparatus according to an aspect of the present disclosure includes: a control section that controls transmission of the channel in at least one of a plurality of contiguous bands provided in a carrier based on a result of listening for each band provided in the carrier.Type: GrantFiled: January 22, 2020Date of Patent: May 28, 2024Assignee: NTT DOCOMO, INC.Inventors: Daisuke Murayama, Hiroki Harada
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Patent number: 11997701Abstract: A user terminal includes a receiving section that receives a master information block (MIB) in a cell, and a control section that determines the MIB or cell-specific configuration information about a downlink control channel to configure a control resource set for a common search space, based on a frequency range of the cell and a value determined based on a first parameter in the MIB.Type: GrantFiled: September 27, 2018Date of Patent: May 28, 2024Assignee: NTT DOCOMO, INC.Inventors: Hideaki Takahashi, Kazuki Takeda, Hiroki Harada
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Publication number: 20240172252Abstract: A terminal includes a communication unit configured to perform transmission of a signal to and reception of a signal from a base station; and a control unit configured to transmit, to another terminal, information that is received from the base station based on the transmission and the reception, or information that is obtained from the signal transmitted to or received from the base station.Type: ApplicationFiled: March 31, 2021Publication date: May 23, 2024Applicant: NTT DOCOMO, INC.Inventors: Takuma Nakamura, Tomoya Ohara, Shinya Kumagai, Daisuke Kurita
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Publication number: 20240172311Abstract: A terminal according to one aspect of the present disclosure includes: a receiving section that receives one or more configurations for beam failure detection; and a control section that monitors a plurality of reference signals corresponding to a plurality of respective communication points in the same carrier, based on the one or more configurations. According to one aspect of the present disclosure, it is possible to appropriately perform processing related to radio links/beams on a plurality of communication points.Type: ApplicationFiled: March 19, 2021Publication date: May 23, 2024Applicant: NTT DOCOMO, INC.Inventors: Hiroki Harada, Daisuke Kurita, Satoshi Nagata
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Publication number: 20240172249Abstract: A terminal includes: a reception unit configured to receive DCI (Downlink Control Information) including an index indicating a row in a TDRA (Time Domain Resource Allocation) table and an upper layer parameter from a base station; a control unit configured to determine positions of one or a plurality of PUSCHs (Physical Uplink Shared Channel) scheduled in a time domain, based on the index and the upper layer parameter; and a transmission unit configured to transmit the one or the plurality of PUSCHs to the base station. In a case where the upper layer parameter is configured to be enabled and the index indicates scheduling of a single PUSCH in the TDRA, the control unit determines that the single PUSCH is to be repeatedly transmitted.Type: ApplicationFiled: March 29, 2021Publication date: May 23, 2024Applicant: NTT DOCOMO, INC.Inventors: Naoya Shibaike, Hiroki Harada, Satoshi Nagata, Qiping Pi, Jing Wang, Lan Chen
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Publication number: 20240171257Abstract: The radio relay device controls a relay state when a radio wave from a radio base station or a terminal is relayed without signal interpretation. The radio relay device transmits or receives a signal related to detection or identification to/from the radio base station or the terminal.Type: ApplicationFiled: March 19, 2021Publication date: May 23, 2024Applicant: NTT DOCOMO, INC.Inventors: Shohei Yoshioka, Haruhi Echigo, Shinya Kumagai, Yuki Takahashi, Daisuke Kurita, Yuki Hokazono, Satoshi Nagata
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Publication number: 20240172054Abstract: A network configures different values for a secondary cell identifier assigned to a secondary cell, and a serving cell identifier assigned to a primary secondary cell, the primary secondary cell being a primary cell in a plurality of the secondary cells included in the same cell group, and transmits configuration information including the secondary cell identifier and the serving cell identifier to a terminal.Type: ApplicationFiled: March 31, 2021Publication date: May 23, 2024Applicant: NTT DOCOMO, INC.Inventors: Tianyang Min, Akihito Hanaki, Shohei Yoshioka
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Publication number: 20240171247Abstract: This base station has: a control unit that determines, on the basis of information shown by the movement of a terminal, a linking method for signal transmission by a plurality of wireless stations, and the number of streams of each wireless station; and a transmission unit that links the plurality of wireless stations according to the determined linking method, and transmits a signal to a terminal using the streams.Type: ApplicationFiled: February 4, 2022Publication date: May 23, 2024Applicant: NTT DOCOMO, INC.Inventors: Tatsuki Okuyama, Satoshi Suyama, Takahiro Asai