Patents by Inventor Hisashi Futaki

Hisashi Futaki 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).

  • Distributed unit, central unit, and method therefor
    Patent number: 11516875
    Abstract: A gNB central unit (gNB-CU) includes a transmitter and a receiver. The transmitter is configured to transmit a message to a gNB distributed unit (gNB-DU). The receiver is configured to receive from the gNB-DU, in response to the message, a list indicating User Equipments (UEs) which needs to be notified by dedicated signaling of system information.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: November 29, 2022
    Assignee: NEC CORPORATION
    Inventors: Sadafuku Hayashi, Hisashi Futaki
  • CONTROL APPARATUS, FIRST MOBILE TERMINAL, METHOD, PROGRAM, AND RECORDING MEDIUM
    Publication number: 20220371731
    Abstract: In order for a mobile terminal to land at an appropriate landing point in reaction to a change of an incident that may occur while the mobile terminal flies along a flight path, a control apparatus 100 includes: an information acquisition section 131 configured to acquire, according to a flight of a first mobile terminal (mobile terminal 200a) performed based on a flight path to a first landing point, information on one or more second landing points associated with the flight path to the first landing point; and a first communication processing section 133 configured to transmit the information on the one or more second landing points to the first mobile terminal (mobile terminal 200a) via a mobile communication network 300.
    Type: Application
    Filed: September 1, 2020
    Publication date: November 24, 2022
    Applicant: NEC Corporation
    Inventors: Toshiyuki TAMURA, Hisashi FUTAKI
  • RADIO STATION, RADIO TERMINAL, AND METHOD FOR TERMINAL MEASUREMENT
    Publication number: 20220377718
    Abstract: A radio station (1) transmits, to a radio terminal (3) on a licensed frequency (Cell #1), control signaling (S102) associated with at least one of a measurement timing and a measurement period of terminal measurement on an unlicensed frequency (Cell #2) and receives, from the radio terminal (3) on the licensed frequency (Cell #1), a result of the terminal measurement that is executed in response to the control signaling (S102) and in accordance with at least one of the measurement timing and the measurement period (S105). This contributes, for example, to acquisition of information useful for the radio station to determine whether to allow the radio terminal to perform communication on the unlicensed frequency.
    Type: Application
    Filed: August 2, 2022
    Publication date: November 24, 2022
    Applicant: NEC Corporation
    Inventor: Hisashi Futaki
  • System, terminal, base station, and methods for scheduling multimedia broadcast and multicast service reception
    Patent number: 11510120
    Abstract: Even when a radio terminal cannot receive content data from a base station to which the radio terminal serves, the radio terminal receives the content data from other base station. A wireless communication system (1) includes a plurality of radio base stations (21 to 23) and a radio terminal (40). The radio terminal (40) serves to a specific radio base station (serving radio base station) among the radio base stations (21 to 23). Moreover, the radio terminal (40) receives content data which is broadcasted or multicasted from a non-serving radio base station among the radio base stations (21 to 23) according to a gap pattern.
    Type: Grant
    Filed: December 30, 2013
    Date of Patent: November 22, 2022
    Assignee: NEC CORPORATION
    Inventors: Hisashi Futaki, Jinsock Lee
  • Method and apparatuses for selecting beam in carrier aggregation
    Patent number: 11483837
    Abstract: A radio terminal (2) receives beam configuration information from a base station (1), measures a plurality of transmission beams (10) transmitted from the base station (1) in accordance with the beam configuration information, and uses one or more beams selected from among the plurality of transmission beams (10) based on a measurement result as a serving beam. Each of the plurality of transmission beams carries a beamformed reference signal to be measured by the radio terminal (2). The beam configuration information includes a reference signal configuration indicating a radio resource used on each beam for transmitting the beamformed reference signal. It is thus, for example, possible to contribute to provision of a procedure for UE mobility between beams.
    Type: Grant
    Filed: June 19, 2020
    Date of Patent: October 25, 2022
    Assignee: NEC CORPORATION
    Inventor: Hisashi Futaki
  • RADIO TERMINAL, BASE STATION, AND METHODS AND NON-TRANSITORY COMPUTER-READABLE MEDIA THEREFOR
    Publication number: 20220338297
    Abstract: A radio terminal (2) controls state transitions of the radio terminal (2) among first to third RRC states. In addition, if the radio terminal (2) is in the second RRC state, if a current cell that the radio terminal (2) has camped on is different from a first cell in which a state transition from the first RRC state to the second RRC state was performed, and if the current cell satisfies a predetermined condition, the radio terminal (2) allows the radio terminal (2) to transmit data to be transmitted in the current cell by a first transmission procedure in which the radio terminal (2) transmits uplink data before entering the first RRC state.
    Type: Application
    Filed: June 30, 2022
    Publication date: October 20, 2022
    Applicant: NEC Corporation
    Inventors: Hisashi FUTAKI, Sadafuku HAYASHI
  • RADIO COMMUNICATION SYSTEM, RADIO STATION, RADIO TERMINAL, COMMUNICATION CONTROL METHOD, AND COMPUTER-READABLE MEDIUM
    Publication number: 20220330101
    Abstract: A radio network (6) and a radio terminal (4) are configured to, when the radio terminal (4) is using a first cell (10) served by a first radio station (1) as a primary cell and a second cell (20) served by a second radio station (2) as a secondary cell, change the secondary cell form the second cell (20) to a third cell (30) while keeping communication status information regarding the radio terminal (4) on the second cell (20). It is thus, for example, possible to enable a communication service in the secondary cell to be continued after the secondary cell is changed when the radio terminal which is simultaneously using a plurality of cells served by different radio stations changes the secondary cell from a cell of one radio station to a cell of another radio station.
    Type: Application
    Filed: June 27, 2022
    Publication date: October 13, 2022
    Applicant: NEC Corporation
    Inventors: Hisashi FUTAKI, Hiroaki AMINAKA
  • RADIO STATION SYSTEM, RADIO TERMINAL, AND METHODS THEREIN
    Publication number: 20220311561
    Abstract: A radio station (2) transmits configuration information (501) to a radio terminal (1). The configuration information (501) indicates, on a cell-by-cell basis, at least one specific cell on which the radio terminal (1) is allowed to perform at least one of data transmission and data reception on a radio bearer used for uplink transmission or downlink transmission or both via a common Packet Data Convergence Protocol (PDCP) layer (402). As a result, in a radio architecture that provides tight interworking of two different Radio Access Technologies (RATs), it is for example possible to allow an eNB to indicate, to a radio terminal (UE), a specific cell on which the UE should perform uplink transmission.
    Type: Application
    Filed: June 14, 2022
    Publication date: September 29, 2022
    Applicant: NEC Corporation
    Inventors: Hisashi FUTAKI, Sadafuku HAYASHI
  • Radio station, radio terminal, and method for terminal measurement
    Patent number: 11452086
    Abstract: A radio station (1) transmits, to a radio terminal (3) on a licensed frequency (Cell #1), control signaling (S102) associated with at least one of a measurement timing and a measurement period of terminal measurement on an unlicensed frequency (Cell #2) and receives, from the radio terminal (3) on the licensed frequency (Cell #1), a result of the terminal measurement that is executed in response to the control signaling (S102) and in accordance with at least one of the measurement timing and the measurement period (S105). This contributes, for example, to acquisition of information useful for the radio station to determine whether to allow the radio terminal to perform communication on the unlicensed frequency.
    Type: Grant
    Filed: September 11, 2020
    Date of Patent: September 20, 2022
    Assignee: NEC CORPORATION
    Inventor: Hisashi Futaki
  • Radio terminal, base station, and method therefor
    Patent number: 11452160
    Abstract: A radio terminal (1) determines (201) (a) a pathloss level between the radio terminal (1) and a base station (2), (b) a coverage enhancement level based on the pathloss level, or (c) a coverage enhancement mode configured in the radio terminal (1). The radio terminal chooses (202) between non-truncated first information and truncated first information, having a smaller bit length than the non-truncated first information, to be included in an initial uplink Radio Resource Control (RRC) message transmitted within a random access procedure, based on the determined pathloss level, the determined coverage enhancement level, or the determined coverage enhancement mode. This contributes to, for example, enabling a base station to easily know the Msg3 size desired by a radio terminal.
    Type: Grant
    Filed: April 14, 2020
    Date of Patent: September 20, 2022
    Assignee: NEC CORPORATION
    Inventor: Hisashi Futaki
  • BASE STATION, RADIO TERMINAL, AND METHODS THEREIN
    Publication number: 20220295314
    Abstract: A radio terminal (1) receives from a base station (2) a first value (601) of a first radio resource configuration information element. The first value (601) is associated with normal coverage or with a first coverage enhancement level. The radio terminal (1) derives a second value (604) of the first radio resource configuration information element by converting (603) the first value (601) using a value of a conversion factor (602). The second value (604) is associated with a second coverage enhancement level. It is thus, for example, possible to contribute to reduction of data size necessary for the base station to notify the radio terminal of a plurality of radio resource configurations for a plurality of coverage enhancement levels.
    Type: Application
    Filed: June 1, 2022
    Publication date: September 15, 2022
    Applicant: NEC Corporation
    Inventor: Hisashi FUTAKI
  • RAN NODE, RADIO TERMINAL, AND METHODS THEREFOR
    Publication number: 20220287102
    Abstract: A RAN node (1) broadcasts a first initial bandwidth part (BWP) configuration via system information, and broadcasts a second initial BWP configuration via the system information or transmits it via radio terminal dedicated signaling. The first initial BWP configuration includes cell-specific common parameters of a first initial BWP of a cell, while the second initial BWP configuration includes cell-specific common parameters of a second initial BWP of the cell. The second initial BWP is not used by a first type of radio terminal, but is used by a second type of radio terminal. The bandwidth of the second initial BWP is equal to or narrower than of the first initial BWP. This allows the second type of radio terminal, which has a limited capability compared to the first type of radio terminal, to use an initial BWP suitable for its capability.
    Type: Application
    Filed: November 30, 2020
    Publication date: September 8, 2022
    Applicant: NEC Corporation
    Inventors: Hisashi FUTAKI, Sadafuku HAYASHI
  • RADIO ACCESS NETWORK NODE APPARATUS, AMF APPARATUS, AND METHODS THEREFOR
    Publication number: 20220286951
    Abstract: A RAN node apparatus (1) sends to, an AMF (3) in a core network, slice support information indicating a network slice supported by another RAN node (2) that can be used as a secondary node in dual connectivity in which the RAN node apparatus (1) acts as a master node. This can contribute, for example, to allowing the AMF to determine a network slice allowed to a UE, while taking into account a network slice supported by a secondary node of dual connectivity.
    Type: Application
    Filed: January 15, 2021
    Publication date: September 8, 2022
    Applicant: NEC Corporation
    Inventors: Hisashi FUTAKI, Toshiyuki TAMURA
  • RAN NODE, RADIO TERMINAL, AND METHODS THEREFOR
    Publication number: 20220287137
    Abstract: If uplink data together with an RRC resume request message is received from a radio terminal in an RRC_INACTIVE state and a radio terminal context is not available in a first RAN node (1), the first RAN node (1) sends a second type of control message to a second RAN node (2). The second type of control message requests the radio terminal context, and is distinct from a first type of control message that is sent to the second RAN node (2) by the first RAN node (1) when an RRC resume request message not accompanied by uplink data is received. This can contribute, for example, to enabling uplink (UL) data of a radio terminal in RRC_INACTIVE to be transmitted to a core network without relocating a radio terminal context from an old RAN node to a new RAN node.
    Type: Application
    Filed: November 30, 2020
    Publication date: September 8, 2022
    Applicant: NEC Corporation
    Inventors: Hisashi FUTAKI, Sadafuku HAYASHI
  • FIRST RADIO STATION, SECOND RADIO STATION, CORE NETWORK NODE, MOBILE TERMINAL, SYSTEM, METHOD, AND NON-TRANSITORY COMPUTER READABLE RECORDING MEDIUM
    Publication number: 20220286936
    Abstract: In order to further facilitate continuous communication with a flying mobile terminal, a first radio station according to an example aspect of the present disclosure includes a control section configured to, in a handover of a mobile terminal configured to move according to flight path information, control the handover according to the flight path information from a second radio station to the first radio station; and a communication processing section configured to transmit a message including information related to acceptance of the handover to the second radio station without receiving a request message for the handover transmitted from the second radio station.
    Type: Application
    Filed: August 20, 2020
    Publication date: September 8, 2022
    Applicant: NEC Corporation
    Inventors: Hisashi FUTAKI, Toshiyuki TAMURA
  • RADIO COMMUNICATION SYSTEM, RADIO TERMINAL, RADIO NETWORK, RADIO COMMUNICATION METHOD AND PROGRAM
    Publication number: 20220286884
    Abstract: A wireless communication system comprises: a setting notifying means for notifying, to a radio terminal, setting information related to at least one of the radio terminal's collection of measurement information and the radio terminal's reporting of the measurement information to a radio network; a status notifying means for notifying, to the radio network, a status related to at least one of the radio terminal's collection of the measurement information and the radio terminal's reporting of the measurement information; and a re-establishing means for receiving the status and determining whether to re-establish the setting information.
    Type: Application
    Filed: May 27, 2022
    Publication date: September 8, 2022
    Applicant: NEC Corporation
    Inventors: Hisashi FUTAKI, Kosei Kobayashi, Hiroaki Aminaka
  • RADIO COMMUNICATION SYSTEM, RADIO STATION, RADIO TERMINAL, COMMUNICATION CONTROL METHOD, AND NON-TRANSITORY COMPUTER READABLE MEDIUM
    Publication number: 20220287023
    Abstract: A radio terminal can perform carrier aggregation using a first cell of a first radio station and a second cell of a second radio station. The first radio station performs, with the radio terminal, radio resource control for the first cell and the second cell in order to perform the carrier aggregation. Further, the first radio station transmits, to the second radio station, update information regarding an update to a configuration related to the radio resource control for the second cell. It is thus, for example, possible to prevent or reduce data transmission/reception failures which would otherwise occur while a configuration of radio parameters or the like is being changed by a radio terminal in carrier aggregation of a plurality of cells served by different radio stations.
    Type: Application
    Filed: May 23, 2022
    Publication date: September 8, 2022
    Applicant: NEC Corporation
    Inventors: Hisashi Futaki, Hiroaki Aminaka
  • RADIO ACCESS NETWORK NODE APPARATUS, UE, AND METHODS THEREFOR
    Publication number: 20220279436
    Abstract: A RAN node apparatus (1) transmits, to a User Equipment (UE) (3), in a cell served by the RAN node apparatus (10), information indicating a network slice supported by another RAN node (2) that can be used as a secondary node in dual connectivity in which the RAN node apparatus acts as a master node. This can contribute, for example, to allowing the UE to know a network slice supported by a potential secondary node of dual connectivity through a potential master node of the dual connectivity.
    Type: Application
    Filed: January 15, 2021
    Publication date: September 1, 2022
    Applicant: NEC Corporation
    Inventors: Hisashi FUTAKI, Toshiyuki TAMURA
  • CONTROL APPARATUS, FIRST CORE NETWORK NODE, RADIO STATION, SECOND CORE NETWORK NODE, MOBILE TERMINAL, SYSTEM, METHOD, PROGRAM, AND NON-TRANSITORY COMPUTER READABLE RECORDING MEDIUM
    Publication number: 20220279414
    Abstract: In order to further facilitate continuous communication with a flying mobile terminal, a control apparatus according to an example aspect of the present disclosure includes a communication processing section configured to transmit a first request message requesting allocation of a radio resource for a mobile terminal configured to move according to flight path information to a core network connected to a radio station configured to allocate the radio resource.
    Type: Application
    Filed: August 20, 2020
    Publication date: September 1, 2022
    Applicant: NEC Corporation
    Inventors: Toshiyuki TAMURA, Hisashi FUTAKI
  • COMMUNICATION SYSTEM
    Publication number: 20220279594
    Abstract: A system is disclosed in which a user equipment (UE) performs small data transmissions in Radio Resource Control (RRC) Inactive state. The UE receives information configuring small data transmissions via a control-plane, and when there is uplink data to be sent as a small data transmission, the UE generates and transmits an RRC message comprising said small data transmission using a Signalling Radio Bearer (SRB) provided via a Common Control Channel (CCCH).
    Type: Application
    Filed: March 4, 2021
    Publication date: September 1, 2022
    Applicant: NEC Corporation
    Inventors: Yuhua CHEN, Hisashi FUTAKI