Patents by Inventor Hiromasa Umeda
Hiromasa Umeda 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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Publication number: 20220330179Abstract: A terminal includes a receiving unit that receives P-Max that is configuration information of maximum transmit power in a cell in Frequency Range 2 (FR2) among Frequency Range 1 (FR1) and the FR2; and a control unit that performs, when the P-Max of the cell in the FR2 is not supported, an operation of ignoring the P-Max of the cell in the FR2 or an operation of considering the cell in the FR2 as a barred cell.Type: ApplicationFiled: October 2, 2019Publication date: October 13, 2022Applicant: NTT DOCOMO, INC.Inventors: Hideaki Takahashi, Hiromasa Umeda
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Publication number: 20220330177Abstract: A terminal includes: a control section that generates Capability information including UE Capability for a Power Class; and a transmission section that transmits the Capability information. The Power Class is specified by four items of Max Total Radiated Power (TRP), Max peak Equivalent Isotropic Radiated Power (EIRP), Min peak EIRP, and Spherical coverage EIRP, and an Inter-band-Carrier-Aggregation (CA) specified value of at least one of the Max peak EIRP and the Min peak EIRP for Inter-band CA in which a plurality of bands are used is defined by a method different from a method for a non-Inter-band-CA specified value.Type: ApplicationFiled: August 15, 2019Publication date: October 13, 2022Applicant: NTT DOCOMO, INC.Inventors: Yuta Oguma, Hiromasa Umeda, Hisashi Matsuoka
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Publication number: 20220322238Abstract: Various techniques are provided for a method including receiving, at a network device from a user equipment (UE), an indication of a UE capability to support a per-band maximum power for a radio band combination (BC) used by the UE, determining whether the UE supports per-band maximum power for the radio BC based on the indication of the UE capability, and in response to determining the UE supports per-band maximum power for the radio BC, determining a total UE transmission power based on a sum of a maximum power of each band in the radio BC.Type: ApplicationFiled: March 31, 2021Publication date: October 6, 2022Inventors: Hiromasa Umeda, Petri Juhani Vasenkari, Tero Henttonen
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Publication number: 20220322075Abstract: A terminal is disclosed that includes a processor that includes, in capability information, a separation class indicating a frequency separation between a lower edge of a component carrier with a lowest frequency for supported intra-band non-contiguous carrier aggregation and an upper edge of a component carrier with a highest frequency for the supported intra-band non-contiguous carrier aggregation. The terminal further includes a transmitter that transmits the capability information to a base station, where the separation class is indicated by an index to identify a class of the frequency separation. In other aspects, a transmission method and a radio communication system are also disclosed.Type: ApplicationFiled: June 10, 2022Publication date: October 6, 2022Applicant: NTT DOCOMO, INC.Inventors: Hideaki Takahashi, Hiromasa Umeda, Kei Andou
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Publication number: 20220295300Abstract: A UE receives a radio signal via a receive beam. The UE controls the receive beam in a first state or in a second state where control of the receive beam is different from that of the first state. The UE directs at least one receive beam to a serving cell and directs another receive beam to a direction different from the serving cell in a case of controlling the receive beam in the second state and executing configuration regarding a secondary cell.Type: ApplicationFiled: August 15, 2019Publication date: September 15, 2022Applicant: NTT DOCOMO, INC.Inventors: Takuma Takada, Hideaki Takahashi, Hiromasa Umeda
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Publication number: 20220295303Abstract: A UE receives a radio signal via a receive beam. The UE controls the receive beam in a first state or in a second state where control of the receive beam is different from that of the first state. The UE executes received power measurement using a synchronization signal block by simultaneously using a plurality of the receive beams in a case of controlling the receive beam in the second state.Type: ApplicationFiled: August 15, 2019Publication date: September 15, 2022Applicant: NTT DOCOMO, INC.Inventors: Takuma Takada, Hideaki Takahashi, Hiromasa Umeda
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Publication number: 20220295301Abstract: A UE receives a radio signal via a receive beam (Rx). The UE controls the receive beam in a first state or in a second state where control of the receive beam is different from that of the first state. The UE 200 shortens at least any one of a cell detection time and a measurement time for an upper layer in a case of controlling the receive beam in the second state as compared with a case of controlling the receive beam in the first state.Type: ApplicationFiled: August 15, 2019Publication date: September 15, 2022Applicant: NTT DOCOMO, INC.Inventors: Takuma Takada, Hideaki Takahashi, Hiromasa Umeda
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Publication number: 20220295583Abstract: A UE determines frequency allocation (Contiguous/Non-contiguous) of carriers that the UE supports and transmits, to a network, allocation information that can be used to identify the determined frequency allocation. The frequency allocation is applied to dual connectivity over different specific frequency bands.Type: ApplicationFiled: August 15, 2019Publication date: September 15, 2022Applicant: NTT DOCOMO, INC.Inventors: Takuma Takada, Hiromasa Umeda, Yuta Oguma
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Publication number: 20220232371Abstract: A terminal includes a receiving unit that receives, from a base station, information for requesting a report on terminal capability; a control unit that includes, when a plurality of values indicating respective additional spectrum emissions is defined for a frequency band, first information indicating modifications on spectrum emissions corresponding to the respective plurality of values indicating the respective additional spectrum emissions in the report, as the terminal capability; and a transmitting unit that transmits the report to the base station.Type: ApplicationFiled: April 28, 2020Publication date: July 21, 2022Applicant: NTT DOCOMO, INC.Inventors: Hideaki Takahashi, Hiromasa Umeda
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Patent number: 11381959Abstract: There is provided a terminal including a processor that includes, in capability information, a frequency separation between a lower edge of a component carrier with a lowest frequency for supported carrier aggregation and an upper edge of a component carrier with a highest frequency for the supported carrier aggregation; and a transmitter that transmits the capability information to a base station.Type: GrantFiled: December 6, 2018Date of Patent: July 5, 2022Assignee: NTT DOCOMO, INC.Inventors: Hideaki Takahashi, Hiromasa Umeda, Kei Andou
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Patent number: 11330496Abstract: User equipment communicates with a first base station apparatus included in a first radio communication system and a second base station apparatus included in a second radio communication system, and includes an interference notification generating part that generates an interference notification including information indicating that an device-internal interference at the user equipment is detected or that resolution of device-internal interference is detected; a sending/receiving part that sends the interference notification to the first base station apparatus or the second base station apparatus, and receives a response to the interference notification from the first base station apparatus or the second base station apparatus; and a switching part that switches an uplink transmission scheme based on the response of the interference notification.Type: GrantFiled: July 23, 2018Date of Patent: May 10, 2022Assignee: NTT DOCOMO, INC.Inventors: Hideaki Takahashi, Hiromasa Umeda, Kei Andou
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Publication number: 20220132503Abstract: A radio access network element includes at least one processor and at least one memory including computer program code. The at least one memory and the computer program code configured to, with the at least one processor, cause the radio access network element to: generate a carrier aggregation configuration for a user equipment based on capability information from the user equipment, the capability information including at least supported maximum channel bandwidth information and supported minimum channel bandwidth information for each band within a band combination; and send the carrier aggregation configuration to the user equipment to configure the user equipment for communication with the radio access network element.Type: ApplicationFiled: October 19, 2021Publication date: April 28, 2022Applicant: Nokia Technologies OYInventors: Hiromasa UMEDA, Petri J. VASENKARI, Amaanat ALI
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Publication number: 20220124627Abstract: A terminal according to the invention is provided with: a control unit that determines a transmission power of an uplink signal on the basis of the association between a first parameter indicating a transmission rate of the uplink signal during a predetermined time period and a second parameter related to the uplink transmission power; and a transmission unit that transmits the uplink signal by use of the transmission power.Type: ApplicationFiled: February 22, 2019Publication date: April 21, 2022Applicant: NTT DOCOMO, INC.Inventors: Yuta Oguma, Hiromasa Umeda
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Publication number: 20210377933Abstract: A user equipment in a radio communication system including the user equipment and a base station, the user equipment including: a transmission unit that transmits a first maximum bandwidth, which is a maximum bandwidth available to the user equipment for communication, to the base station; and a reception unit that receives, from the base station, a center frequency or frequencies on both ends of a band having a bandwidth, which is equal to or less than the first maximum bandwidth, within a band having a second maximum bandwidth that is a maximum bandwidth available to the base station for communication.Type: ApplicationFiled: September 29, 2017Publication date: December 2, 2021Applicant: NTT DOCOMO, INC.Inventors: Hideaki Takahashi, Kunihiko Teshima, Hiromasa Umeda, Sadayuki Abeta
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Patent number: 11190999Abstract: A user equipment includes: selection means configured to receive a plurality of signaling values and a plurality of maximum transmission power values corresponding to the plurality of signaling values from a base station, to select one signaling value of the plurality of signaling values, and to select the maximum transmission power value corresponding to the selected signaling value; and control means configured to perform cell selection or cell reselection by determining whether a reception level value in a cell to be determined satisfies a predetermined condition using a correction value, which is obtained by subtracting a compensation value based on the maximum transmission power value from a minimum reception level value predetermined for the cell to be determined in the cell selection or cell reselection, and the reception level value measured for the cell to be determined.Type: GrantFiled: August 22, 2016Date of Patent: November 30, 2021Assignee: NTT DOCOMO, INC.Inventors: Hideaki Takahashi, Hiromasa Umeda
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Publication number: 20210306960Abstract: A user equipment includes a transmission unit configured to transmit a signal; and a control unit configured to determine, according to a power class, a maximum transmission power for transmitting the signal. The control unit adjusts, according to an instruction from a base station apparatus, the maximum transmission power. The instruction includes information validating or invalidating adjustment of the maximum transmission power.Type: ApplicationFiled: September 20, 2018Publication date: September 30, 2021Applicant: NTT DOCOMO, INC.Inventors: Yousuke Sano, Hiromasa Umeda, Hideaki Takahashi
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Publication number: 20210258884Abstract: User equipment includes a control unit that compensates for, by a compensation value related to uplink transmission power capability of the user equipment, a threshold value of a received level that defines a condition for performing measurement for cell selection, and that determines, by the compensated threshold value of the received level, whether the measurement for the cell selection is performed.Type: ApplicationFiled: May 21, 2019Publication date: August 19, 2021Applicant: NTT DOCOMO, INC.Inventors: Yousuke Sano, Hiromasa Umeda, Hideaki Takahashi
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Patent number: 11071108Abstract: A user equipment for communicating with a base station in a radio communication system that supports narrow band communication is disclosed including a receiver that receives, from the base station via a first frequency band, information for identifying a second frequency band. A synchronization signal and broadcast information are transmitted on the first frequency band, and the synchronization signal and the broadcast information are not transmitted on the second frequency band. The user equipment further includes a processor that identifies a center frequency of the second frequency band based on the received information.Type: GrantFiled: February 15, 2018Date of Patent: July 20, 2021Assignee: NTT DOCOMO, INC.Inventors: Hideaki Takahashi, Hiromasa Umeda, Kazuaki Takeda
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Publication number: 20210195536Abstract: A base station includes a control unit that configures, for each power class of a plurality of power classes, SIntraSearchP that is a threshold value of a received level for performing intra-frequency measurement for cell selection and SnonIntraSearchP that is a threshold value of a received level for performing inter-frequency measurement for cell selection; and a transmitting unit that transmits, to the user equipment, the SIntraSearchP and the SnonIntraSearchP that are configured for the power class of the plurality of power classes.Type: ApplicationFiled: May 21, 2019Publication date: June 24, 2021Applicant: NTT DOCOMO, INC.Inventors: Yousuke Sano, Hiromasa Umeda, Hideaki Takahashi
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Publication number: 20210176714Abstract: A user equipment includes a transmission unit configured to transmit a signal; and a control unit configured to determine, according to a power class, a maximum transmission power for transmitting the signal. The control unit causes the maximum transmission power to change according to a modulation method for the signal.Type: ApplicationFiled: August 21, 2018Publication date: June 10, 2021Applicant: NTT DOCOMO, INC.Inventors: Yousuke Sano, Hiromasa Umeda, Hideaki Takahashi