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).

  • Patent number: 12273173
    Abstract: A terminal is disclosed including a processor and a transmitter. The processor includes, in a UECapabilityInformation message, information indicating whether transmission diversity is supported on a per-band basis. The transmitter transmits, to a base station, the UECapabilityInformation message including the information indicating whether transmission diversity is supported on the per-band basis. In other aspects, a communication method and a radio communication system are also disclosed.
    Type: Grant
    Filed: January 25, 2024
    Date of Patent: April 8, 2025
    Assignee: NTT DOCOMO, INC.
    Inventors: Hiromasa Umeda, Hideaki Takahashi, Yuta Oguma
  • Publication number: 20250080309
    Abstract: An apparatus including at least one processor and at least one memory storing instructions that when executed by the at least one processor cause the apparatus at least to perform receiving from a network node an indication of a second radio frequency carrier. The second radio frequency carrier is contained within a first radio frequency carrier over which the network node communicates. One or more out-of-band emission requirements for the apparatus are defined with respect to the first radio frequency carrier. The apparatus is further caused to perform determining at least one user equipment radio frequency requirement based on the second radio frequency carrier and transmitting a signal over the second radio frequency carrier based on the at least one user equipment radio frequency requirement and the one or more out-of-band emission requirements.
    Type: Application
    Filed: August 30, 2024
    Publication date: March 6, 2025
    Inventors: Esa Tapani TIIROLA, Hiromasa UMEDA, Kari Juhani HOOLI, Oskari TERVO, Antti-Veikko Sakari PIIPPONEN
  • Publication number: 20250081173
    Abstract: There is provided a method comprising: determining (300) a plurality of band combinations supported by the apparatus for aggregating multiple carriers, each band combination comprising at least two bands; identifying (302), among the plurality of supported band combinations, a first band combination wherein the first band combination is a subset of one or more of the supported band combinations and wherein, for the first band combination, the apparatus supports a low maximum sensitivity degradation (MSD) which is lower than a predetermined MSD value; and transmitting (304) to a network an indication of the identified first band combination and low MSD information associated with the identified first band combination, wherein the low MSD information is valid also for each of the supported band combinations which comprises at least the bands of the first band combination.
    Type: Application
    Filed: December 7, 2022
    Publication date: March 6, 2025
    Inventors: Hiromasa UMEDA, Petri Juhani VASENKARI, Tero HENTTONEN
  • Patent number: 12232052
    Abstract: 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: Grant
    Filed: October 2, 2019
    Date of Patent: February 18, 2025
    Assignee: NTT DOCOMO, INC.
    Inventors: Hideaki Takahashi, Hiromasa Umeda
  • Patent number: 12232046
    Abstract: A terminal including: a control unit configured to compare a power reduction total value that is reduced from a maximum transmission power value determined based on a power class and that does not include a power reduction value for adjusting the power class with a predetermined value, and to calculate a lower limit value of a maximum transmission power by setting the power reduction value for adjusting the power class as 0 dB when the power reduction total value is greater than the predetermined value; and a transmission unit configured to perform uplink transmission using a maximum transmission power value equal to or greater than the lower limit value.
    Type: Grant
    Filed: January 31, 2020
    Date of Patent: February 18, 2025
    Assignee: NTT DOCOMO, INC.
    Inventors: Hiromasa Umeda, Yuta Oguma
  • Patent number: 12213085
    Abstract: Systems, methods, apparatuses, and computer program products for reporting of achievable power per component carrier with multiple power sources and configuration based on such reporting are provided. For example, a method can include receiving a request to report user equipment band combination capabilities. The method can also include reporting a capability of a user equipment to a network. The capability can include indication of one or more component carrier groups per band combination or per band. The one or more component carrier groups can contain indication of one or more power sources for the component carrier group.
    Type: Grant
    Filed: June 2, 2022
    Date of Patent: January 28, 2025
    Assignee: NOKIA TECHNOLOGIES OY
    Inventors: Hiromasa Umeda, Tero Henttonen
  • Publication number: 20240356698
    Abstract: Disclosed are methods and apparatus for correspondence between downlink reference signals and uplink reference signals. A terminal device in a communication network may comprise at least one processor and at least one memory having computer program code stored thereon. The at least one memory and the computer program code may be configured, with the at least one processor, cause the terminal device to perform: transmitting, to a network device, information indicative of support of antenna port correspondence between antenna ports used for reception of downlink (DL) reference signal (RS) resources and antenna ports used for transmission of uplink (UL) reference signal resources at the terminal device: receiving, from the network device, a request for use of the antenna port correspondence at the terminal device: and transmitting, to the network device, a message indicating usage of the antenna port correspondence at the terminal device.
    Type: Application
    Filed: August 29, 2022
    Publication date: October 24, 2024
    Inventors: Pasi Eino Tapio KINNUNEN, Juha Pekka KARJALAINEN, Mihai ENESCU, Sami-Jukka HAKOLA, Hiromasa UMEDA
  • Publication number: 20240356695
    Abstract: User equipment comprising: means configured to: report, to a network, antenna-switching configurations for the user equipment: receive, from the network, a configuration of sounding reference signal (SRS) resources; and transmit, in parallel, a first SRS using a first SRS resource of the SRS resources to a first transmission-reception point (TRP) and a second SRS of the SRS resources using a second SRS resource to a second TRP.
    Type: Application
    Filed: October 11, 2021
    Publication date: October 24, 2024
    Inventors: Juha Pekka KARJALAINEN, Sami-Jukka HAKOLA, Hiromasa UMEDA, Mihai ENESCU, Keeth Saliya Jayasinghe LADDU
  • Publication number: 20240349199
    Abstract: A method including: determining, with a user equipment, an uplink transmission power control mode from at least two possible different uplink transmission power control modes for antenna ports of the user equipment, where the antenna ports comprise at least two antenna ports; and sending, to a network equipment, information regarding the determined uplink transmission power control mode.
    Type: Application
    Filed: April 5, 2024
    Publication date: October 17, 2024
    Inventors: Hiromasa UMEDA, Juha Pekka KARJALAINEN, Youngsoo YUK
  • Patent number: 12120619
    Abstract: 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: Grant
    Filed: August 15, 2019
    Date of Patent: October 15, 2024
    Assignee: NTT DOCOMO, INC.
    Inventors: Yuta Oguma, Hiromasa Umeda, Hisashi Matsuoka
  • Publication number: 20240340810
    Abstract: A method, apparatus and computer program product are provided for defining a configured maximum output power of a user equipment. In the context of a method, a configured maximum output power of the user equipment in a respective slot for a carrier of a serving cell is determined based on at least one boundary. The at least one boundary is determined based at least partly upon a scaling factor dependent upon a number of antenna ports having a non-zero transmission power on a physical uplink shared channel (PUSCH). The method also reports the determined configured maximum output power to a network node operating the serving cell, thereby allowing the network to control the conditions of the uplink transmission more accurately.
    Type: Application
    Filed: April 5, 2024
    Publication date: October 10, 2024
    Inventors: Hiromasa UMEDA, Pekka Johannes MARJELUND
  • Publication number: 20240298272
    Abstract: Disclosed is a method comprising obtaining information indicating a capability of a terminal device for applying an adjusted additional maximum power reduction. The method further comprises receiving, from the terminal device, a message comprising at least an indication of a direct current location associated with the terminal device. The method further comprises determining, according to one or more pre-defined rules based at least partly on the direct current location, an amount of the adjusted additional maximum power reduction applied by the terminal device.
    Type: Application
    Filed: June 2, 2021
    Publication date: September 5, 2024
    Inventors: Hiromasa UMEDA, Petri Juhani VASENKARI, Tero HENTTONEN, Toni Harri Henrikki LÄHTEENSUO
  • Publication number: 20240292343
    Abstract: A method, apparatus, and computer readable medium facilitate network control by allowing a base station to predict when power class fallback will occur in user equipment. In the context of a method, the method receives a message comprising information about at least one of a first power class or a maximum duty cycle associated with user equipment. The method determines, based on at least the first power class or the maximum duty cycle, a threshold duty cycle for the user equipment. The method causes the threshold duty cycle to be transmitted to the user equipment. The method determines an uplink transmission schedule for the user equipment based at least on the first power class or the maximum duty cycle. The method receives, from the user equipment, a report that the threshold duty cycle has been exceeded by the user equipment.
    Type: Application
    Filed: February 6, 2024
    Publication date: August 29, 2024
    Inventors: Kari Juhani HOOLI, Hiromasa UMEDA, Nhat-Quang NHAN, Oskari TERVO, Marco MASO
  • Publication number: 20240284210
    Abstract: This document discloses a solution for performing radio configuration testing. According to an aspect. a method in a terminal device comprises: receiving. from a network node. a request for performing a radio configuration test for selecting operational parameters of the terminal device for a radio connection of the terminal device. the request comprising at least one information element indicating a target performance metric and at least one information element defining limitations to the operational parameters available for the radio configuration test: performing the radio configuration test by testing a plurality of different combinations of operational parameters of the terminal device, within the limitations received from the network node. and determining a performance metric of each of the plurality of different combinations of tested operational parameters: causing transmission of a test report to the network node.
    Type: Application
    Filed: June 4, 2021
    Publication date: August 22, 2024
    Inventors: Amaanat ALI, Keeth Saliya Jayasinghe LADDU, Mihai ENESCU, Tero HENTTONEN, Hiromasa UMEDA
  • Publication number: 20240267181
    Abstract: Disclosed is a method comprising obtaining one or more antenna-port-specific repetition patterns and/or one or more antenna-port-specific uplink power control target values for a plurality of antenna ports; and transmitting an uplink reference signal by applying antenna switching to at least a subset of the plurality of antenna ports based at least partly on the one or more antenna-port-specific repetition patterns and/or the one or more antenna-port-specific uplink power control target values.
    Type: Application
    Filed: April 28, 2022
    Publication date: August 8, 2024
    Inventors: Juha Pekka KARJALAINEN, Hiromasa UMEDA, Mihai ENESCU, Kyoungmin PARK
  • Patent number: 12058623
    Abstract: 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: Grant
    Filed: September 20, 2018
    Date of Patent: August 6, 2024
    Assignee: NTT DOCOMO, INC.
    Inventors: Yousuke Sano, Hiromasa Umeda, Hideaki Takahashi
  • Publication number: 20240260020
    Abstract: Disclosed is a method comprising receiving, from a terminal device, a message comprising at least an indication of a direct current location associated with the terminal device; determining an effective channel bandwidth for uplink based at least partly on the direct current location associated with the terminal device; and determining, based at least partly on the effective channel bandwidth and a pre-defined condition, a maximum number of uplink resource blocks for fulfilling one or more reference sensitivity requirements of the terminal device.
    Type: Application
    Filed: August 13, 2021
    Publication date: August 1, 2024
    Inventors: Hiromasa UMEDA, Petri Juhani VASENKARI, Toni Harri Henrikki LÄHTEENSUO, Tero HENTTONEN
  • Publication number: 20240215004
    Abstract: 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: Application
    Filed: March 5, 2024
    Publication date: June 27, 2024
    Applicant: NOKIA TECHNOLOGIES OY
    Inventors: Hiromasa UMEDA, Petri J. VASENKARI, Amaanat ALI
  • Publication number: 20240179634
    Abstract: 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: Application
    Filed: March 29, 2022
    Publication date: May 30, 2024
    Inventors: Hiromasa UMEDA, Petri Juhani VASENKARI, Tero HENTTONEN
  • Publication number: 20240162963
    Abstract: A terminal is disclosed including a processor and a transmitter. The processor includes, in a UECapabilityInformation message, information indicating whether transmission diversity is supported on a per-band basis. The transmitter transmits, to a base station, the UECapabilityInformation message including the information indicating whether transmission diversity is supported on the per-band basis. In other aspects, a communication method and a radio communication system are also disclosed.
    Type: Application
    Filed: January 25, 2024
    Publication date: May 16, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Hiromasa Umeda, Hideaki Takahashi, Yuta Oguma