Patents by Inventor Kazuaki Takeda
Kazuaki Takeda 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).
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Patent number: 11930502Abstract: 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: GrantFiled: March 2, 2021Date of Patent: March 12, 2024Assignee: NTT DOCOMO, INC.Inventors: Kazuki Takeda, Kazuaki Takeda, Satoshi Nagata, Qin Mu, Lihui Wang
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Patent number: 11917595Abstract: A communication device includes a receiving unit that receives at least one of configuration information of a same center frequency used for downlink reception and sidelink reception in one slot or configuration information of a same center frequency used for uplink transmission and sidelink transmission in the one slot; and a control unit that configures, based on the received configuration information, at least one of the same center frequency for the downlink reception and the sidelink reception in the one slot or the same center frequency for the uplink transmission and the sidelink transmission in the one slot.Type: GrantFiled: July 3, 2018Date of Patent: February 27, 2024Assignee: NTT DOCOMO, INC.Inventors: Ryosuke Osawa, Kazuaki Takeda, Satoshi Nagata
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Patent number: 11902958Abstract: A terminal is disclosed communicating using a first carrier performing at least Downlink (DL) transmission and a second carrier performing only Uplink (UL) transmission. The terminal includes a receiver that receives an indication regarding a UL, the indication included in downlink control information (DCI) that is reported from the first carrier and a processor that transmits a UL signal using the UL based on the indication. In other aspects, a radio communication method, a base station, and a system are also disclosed.Type: GrantFiled: October 1, 2021Date of Patent: February 13, 2024Assignee: NTT DOCOMO, INC.Inventors: Kazuaki Takeda, Kazuki Takeda, Satoshi Nagata
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Patent number: 11888570Abstract: A terminal is disclosed including a transmitter that transmits a beam recovery request signal and a processor that controls the transmission of the beam recovery request signal. The transmission of the beam recovery request signal is controlled by the processor based on a received power that is measured using a channel state information reference signal (CSI-RS) resource or a synchronization signal (SS) block that is quasi co-located (QCL) with a demodulation reference signal of a downlink control channel. In other aspects, a radio communication method is also disclosed.Type: GrantFiled: March 23, 2017Date of Patent: January 30, 2024Assignee: NTT DOCOMO, INC.Inventors: Kazuaki Takeda, Hiroki Harada, Kazuki Takeda, Satoshi Nagata, Yuichi Kakishima, Chongning Na
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Patent number: 11844110Abstract: A terminal, as disclosed, includes a receiver that receives information about transmission conditions for an uplink (UL) channel or for a UL signal. The terminal further includes a processor that, when dual connectivity using a first radio access technology and a second radio access technology is configured and when a cell using frequency division duplexing (FDD) is configured for the first radio access technology, controls a transmission of the UL channel or of the UL signal in the cell using the FDD, based on the information about the transmission conditions and a UL or downlink (DL) configuration. A radio communication method and a base station are disclosed as well.Type: GrantFiled: September 11, 2017Date of Patent: December 12, 2023Assignee: NTT DOCOMO, INC.Inventors: Kazuaki Takeda, Kazuki Takeda, Satoshi Nagata
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Patent number: 11843554Abstract: A user equipment (UE) is disclosed including a receiver that receives at least a reference signal (RS) transmitted using a first beam from a transmission and reception point (TRP), using at least a second beam, and a processor that determines the first beam paired with the second beam based on reception quality of the RSs. The UE further includes a transmitter that transmits feedback information indicating the determined first beam. The second beam is an omni-directional beam. The receiver receives, from the TRP, reception (Rx) beam designation information indicating an Rx beam to receive the RSs, and the second beam is the Rx beam.Type: GrantFiled: March 22, 2018Date of Patent: December 12, 2023Assignee: NTT DOCOMO, INC.Inventors: Yuichi Kakishima, Chongning Na, Satoshi Nagata, Kazuaki Takeda
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Patent number: 11792751Abstract: To appropriately control communication using at least one of a synchronization signal block and a reference signal even when communication is performed using a BWP, according to one aspect of the present disclosure, there is provided a user terminal including: a receiving section that receives at least one of a synchronization signal block and a given reference signal in a given bandwidth part (BWP); and a control section that decides whether to apply a synchronization signal block to a specific operation based on at least one of information regarding a frequency position of a synchronization signal block commonly reported by a serving cell and information regarding a frequency position of a synchronization signal block in the BWP.Type: GrantFiled: May 21, 2018Date of Patent: October 17, 2023Assignee: NTT DOCOMO, INC.Inventors: Hiroki Harada, Hideaki Takahashi, Yuichi Kakishima, Kazuaki Takeda, Kazuki Takeda
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Patent number: 11778624Abstract: A terminal is disclosed that includes a receiver that receives higher layer signaling that indicates a periodic time period in which uplink transmission is not performed and a processor that monitors downlink control information for scheduling system information in the time period. In other aspects, a radio communication method and a base station are disclosed.Type: GrantFiled: June 19, 2020Date of Patent: October 3, 2023Assignee: NTT DOCOMO, INC.Inventors: Kazuki Takeda, Yoshihisa Kishiyama, Hiroki Harada, Kazuaki Takeda, Satoshi Nagata
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Patent number: 11770836Abstract: A terminal is disclosed including a processor configured to map a phase tracking reference signal, PTRS, to at least one symbol used for an uplink shared channel; and a transmitter configured to perform transmission processing for the uplink shared channel and the PTRS, wherein the processor sets a reference for mapping the PTRS to a second symbol when the transmitter transmits a demodulation reference signal, DMRS, using a first symbol and the second symbol in the uplink shared channel. In other aspects, another terminal and a base station are also disclosed.Type: GrantFiled: November 8, 2021Date of Patent: September 26, 2023Assignee: NTT DOCOMO, INC.Inventors: Keisuke Saito, Kazuaki Takeda, Satoshi Nagata, Yuichi Kakishima
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Patent number: 11751214Abstract: According to one aspect of the present invention, an apparatus is disclosed including a transmitter that transmits a transport block (TB) using a physical uplink shared channel based on a downlink control information, a processor that applies a same symbol allocation across a plurality of slots when transmission of the TB is carried out over the plurality of slots, and an input apparatus that accepts an input, wherein the TB contains information based on the input. In other aspects, a system including an apparatus and a base station is also disclosed.Type: GrantFiled: September 17, 2021Date of Patent: September 5, 2023Assignee: NTT DOCOMO, INC.Inventors: Keisuke Saito, Kazuaki Takeda, Kazuki Takeda, Satoshi Nagata, Lihui Wang, Xiaolin Hou
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Patent number: 11743901Abstract: A user equipment in a radio communication system including a base station and the user equipment, the user equipment including: a resource management unit that retains configuration information of a resource capable of transmitting uplink data without receiving uplink data transmission permission from the base station; and a transmission unit that transmits a signal indicating that uplink data transmission using the resource is performed to the base station.Type: GrantFiled: August 7, 2017Date of Patent: August 29, 2023Assignee: NTT DOCOMO, INC.Inventors: Shinpei Yasukawa, Satoshi Nagata, Kazuaki Takeda, Yousuke Sano
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Publication number: 20230247581Abstract: A radio base station includes: a transmission unit that transmits a measurement report according to a protocol based on a location service to a positioning server; and a control unit that includes, in the measurement report, a measurement result of a cell belonging to a different radio access technology, together with identification information uniquely specifying the cell belonging to the different radio access technology.Type: ApplicationFiled: July 10, 2020Publication date: August 3, 2023Applicant: NTT DOCOMO, INC.Inventors: Masato Taniguchi, Tianyang Min, Rina Suzuki, Kazuaki Takeda
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Patent number: 11716709Abstract: In one aspect, a user terminal is disclosed including a processor that controls a mapping of a first demodulation reference signal (DMRS), having a fixed location regardless of a symbol duration of an uplink shared channel (PUSCH), controls a mapping of a second DMRS, which is allocated depending on the symbol duration of the PUSCH, and determines a location of the second DMRS if the second DMRS is allocated. The user terminal also includes a transmitter that transmits at least one of the first DMRS and the second DMRS.Type: GrantFiled: April 2, 2019Date of Patent: August 1, 2023Assignee: NTT DOCOMO, INC.Inventors: Kazuki Takeda, Tooru Uchino, Kazuaki Takeda, Satoshi Nagata
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Patent number: 11683726Abstract: A communication device includes a receiving unit that receives information indicating a first set of combinations of radio parameters; a control unit that extracts, based on the first set of the combinations of the radio parameters and a second set of combinations of radio parameters supported by the communication device, a third set of combinations of radio parameters that are common between the first set and the second set; and a transmitting unit that transmits information indicating the third set of the combinations of the radio parameters.Type: GrantFiled: June 29, 2018Date of Patent: June 20, 2023Assignee: NTT DOCOMO, INC.Inventors: Ryosuke Osawa, Kazuaki Takeda
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Patent number: 11671921Abstract: An apparatus according to an aspect of the present disclosure includes a communication module that includes a transmitter that carries out an uplink transmission of an uplink shared channel (physical uplink shared channel (PUSCH)), and a processor that controls a transmission power used in the uplink transmission based on: a value that is calculated based on a number of resource blocks of the uplink transmission and one of a plurality of numerologies having different subcarrier spacings, and a transmission power command (TPC) included in a downlink control information (DCI) format, wherein information about the one of the plurality of numerologies is received via higher layer signaling; and an input apparatus that accepts an input, wherein the PUSCH contains information based on the input. In another aspect, a system is also disclosed.Type: GrantFiled: September 3, 2021Date of Patent: June 6, 2023Assignee: NTT DOCOMO, INC.Inventors: Kazuaki Takeda, Kazuki Takeda, Hiroki Harada, Satoshi Nagata
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Patent number: 11646853Abstract: A terminal is disclosed including a receiver that receives downlink control information indicating a transmission bandwidth allocated to a downlink shared channel within a bandwidth part, and a processor that determines a size of a precoding resource block group (PRG), to which a same precoding is applied, based on the transmission bandwidth or a subset of the transmission bandwidth. In other aspects, a radio communication method for a terminal is also disclosed.Type: GrantFiled: July 13, 2017Date of Patent: May 9, 2023Assignee: NTT DOCOMO, INC.Inventors: Kazuki Takeda, Keisuke Saito, Kazuaki Takeda, Satoshi Nagata, Lihui Wang, Xiaolin Hou
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Patent number: 11637672Abstract: This user terminal is provided with: a reception unit that receives a downlink signal including a demodulation reference signal; a signal separation unit that separates the demodulation reference signal from the downlink signal; and a channel estimation unit that calculates a channel estimation value by using the demodulation reference signal. The demodulation reference signal is mapped on a resource element set in a transmission pattern selected from a plurality of candidate patterns. The reception unit receives an index indicating the transmission pattern, and the signal separation unit separates the demodulation reference signal by using the transmission pattern specified on the basis of the index.Type: GrantFiled: August 7, 2017Date of Patent: April 25, 2023Assignee: NTT DOCOMO, INC.Inventors: Keisuke Saito, Kazuaki Takeda, Kazuki Takeda, Satoshi Nagata, Chongning Na
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Patent number: 11632800Abstract: A user equipment communicating with a base station in a wireless communication system including the base station and the user equipment, the user equipment including: a storage unit configured to store correspondence information where an identifier of a beam formed by the base station and configuration information used for transmission of a random access signal are associated with each other; a selection unit configured to select a specific beam on the basis of reception quality of signals transmitted from the base station by using a plurality of different beams and select configuration information corresponding to the specific beam on the basis of the correspondence information; and a transmission unit configured to transmit the random access signal to the base station by using the configuration information selected by the selection unit.Type: GrantFiled: February 3, 2017Date of Patent: April 18, 2023Assignee: NTT DOCOMO, INC.Inventors: Shimpei Yasukawa, Kazuki Takeda, Kazuaki Takeda, Hiroki Harada, Satoshi Nagata
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Patent number: 11595997Abstract: A user terminal is disclosed, where a band to use is limited to a partial narrow band in a system band. The user terminal includes a transmitter that transmits and/or a receiver that receives a signal, and a controller that controls repetitious reception and/or repetitious transmission of a control channel in a random access procedure based on a coverage enhancement level for a random access channel. A radio base station that communicates with a user terminal is also disclosed, where a band to use is limited to a partial narrow band in a system band. The radio base station includes a transmitter that transmits and/or a receiver that receives a signal, and a controller that controls to transmit information to make the user terminal control repetitious reception and/or repetitious transmission of a control channel in a random access procedure based on a coverage enhancement level for a random access channel.Type: GrantFiled: September 23, 2016Date of Patent: February 28, 2023Assignee: NTT DOCOMO, INC.Inventors: Hideyuki Moroga, Kazuaki Takeda, Huiling Jiang, Liu Liu, Qin Mu
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Patent number: 11588669Abstract: The present invention is designed to perform UL transmission using a transmission format suitable for content-based uplink (UL) transmission. A user terminal according to the present invention has a transmission section that transmits UL data without UL grants from a radio base station, and a control section that controls transmission of the UL data according to a transmission format, and the transmission format is comprised of an access channel for transmitting a randomly-selected preamble, a control channel for transmitting control information for the UL data, and a data channel for transmitting the UL data.Type: GrantFiled: May 1, 2017Date of Patent: February 21, 2023Assignee: NTT DOCOMO, INC.Inventors: Kazuaki Takeda, Kazuki Takeda, Satoshi Nagata, Hiroki Harada