Patents by Inventor Hiroaki Aminaka

Hiroaki Aminaka 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).

  • Publication number: 20210352752
    Abstract: A radio terminal (3) can perform carrier aggregation using a first cell (10) of a first radio station (1) and a second cell (20) of a second radio station (2). The first radio station (1) performs, with the radio terminal (3), radio resource control for the first cell (10) and the second cell (20) in order to perform the carrier aggregation. At least one of the second radio station (2) and the radio terminal (3) is configured to transmit, to the first radio station (10), information about a problem occurring in a radio link in the second cell (20) between the second radio station (20) and the radio terminal (30) while the carrier aggregation of the first cell (10) and the second cell (20) is being performed.
    Type: Application
    Filed: July 21, 2021
    Publication date: November 11, 2021
    Applicant: NEC Corporation
    Inventors: Hisashi FUTAKI, Hiroaki AMINAKA
  • Publication number: 20210329630
    Abstract: A radio communication system includes a first base station that manages a first cell (110), a second base station (12) that manages a second cell (120), and a radio terminal (2). The radio terminal (2) supports dual connectivity involving a bearer split in which a first network bearer between the radio terminal (2) and a core network (3) is split over the first base station (11) and the second base station (12). The first base station (11) receives, from the second base station (12), bearer split status information about communication of the first network bearer in the second base station (12), and performs control of an access stratum related to the first network bearer. It is thus possible to contribute, for example, to an improvement in control of an access stratum when dual connectivity involving a bearer split is performed.
    Type: Application
    Filed: June 24, 2021
    Publication date: October 21, 2021
    Applicant: NEC Corporation
    Inventors: Hisashi FUTAKI, Hiroto SUGAHARA, Hiroaki AMINAKA
  • Publication number: 20210282023
    Abstract: A first base station (1) is configured to establish a first signaling bearer with a mobility management apparatus (5), establish a second signaling bearer with a second base station (2), and to establish a signaling radio bearer with a mobile station (3) in a first cell (10). The second base station (2) is configured to establish the second signaling bearer with the first base station (1), establish a data bearer with a data transfer apparatus (6), and to establish a data radio bearer with the mobile station (3) in a second cell (20). Furthermore, the first base station (1) is configured to transmit, to the second base station (2) through the second signaling bearer configuration information, necessary to establish the data bearer and the data radio bearer in the second base station (2). Thus, for example, bearer architecture suitable for a C/U plane split scenario is provided.
    Type: Application
    Filed: May 19, 2021
    Publication date: September 9, 2021
    Applicant: NEC Corporation
    Inventors: Hiroaki AMINAKA, Hisashi FUTAKI
  • Patent number: 11102837
    Abstract: A radio terminal (3) can perform carrier aggregation using a first cell (10) of a first radio station (1) and a second cell (20) of a second radio station (2). The first radio station (1) performs, with the radio terminal (3), radio resource control for the first cell (10) and the second cell (20) in order to perform the carrier aggregation. At least one of the second radio station (2) and the radio terminal (3) is configured to transmit, to the first radio station (10), information about a problem occurring in a radio link in the second cell (20) between the second radio station (20) and the radio terminal (30) while the carrier aggregation of the first cell (10) and the second cell (20) is being performed.
    Type: Grant
    Filed: October 22, 2019
    Date of Patent: August 24, 2021
    Assignee: NEC CORPORATION
    Inventors: Hisashi Futaki, Hiroaki Aminaka
  • Patent number: 11089588
    Abstract: A radio communication system includes a first base station that manages a first cell (110), a second base station (12) that manages a second cell (120), and a radio terminal (2). The radio terminal (2) supports dual connectivity involving a bearer split in which a first network bearer between the radio terminal (2) and a core network (3) is split over the first base station (11) and the second base station (12). The first base station (11) receives, from the second base station (12), bearer split status information about communication of the first network bearer in the second base station (12), and performs control of an access stratum related to the first network bearer. It is thus possible to contribute, for example, to an improvement in control of an access stratum when dual connectivity involving a bearer split is performed.
    Type: Grant
    Filed: May 2, 2018
    Date of Patent: August 10, 2021
    Assignee: NEC CORPORATION
    Inventors: Hisashi Futaki, Hiroto Sugahara, Hiroaki Aminaka
  • Publication number: 20210235295
    Abstract: A radio terminal (2) is used in a radio communication system (100) and communicates with a radio station (1). The radio terminal (2) includes a measurement unit (20). The measurement unit (20) operates to perform, using a terminal measurement procedure for executing a first terminal measurement corresponding to radio access technology applied to the radio communication system (100), a second terminal measurement of a shared frequency shared by a plurality of radio systems including the radio communication system (100).
    Type: Application
    Filed: April 13, 2021
    Publication date: July 29, 2021
    Applicant: NEC Corporation
    Inventors: Hisashi FUTAKI, Hiroaki AMINAKA, Hiroto SUGAHARA, Yoshikazu KAKURA, Kazushi MURAOKA
  • Patent number: 11076131
    Abstract: A video collection system includes: a plurality of terminals; and a video collection server that requests at least one of the plurality of terminals to perform information provision. The video collection server includes a calculation part, a determination part, and a request part. The calculation part calculates, based on information acquired from a camera(s), a first area(s) imaged by the camera(s). The determination part determines a second area(s) as an information provision target(s) based on a location(s) of the first area(s). The request part selects, based on respective locations of the plurality of terminals and a location(s) of the second area(s), a terminal(s) to be requested to perform the information provision from the plurality of terminals and requests the selected terminal(s) to provide video data of the second area(s).
    Type: Grant
    Filed: February 22, 2017
    Date of Patent: July 27, 2021
    Assignee: NEC CORPORATION
    Inventors: Norio Yamagaki, Dai Kanetomo, Hiroaki Aminaka, Kazushi Muraoka, Taichi Ohtsuji, Takashi Yoshinaga
  • Patent number: 11049374
    Abstract: A tracking support system includes a position calculating section connected with a plurality of cameras arranged in a predetermined monitoring area to transmit video images imaged by the plurality of cameras and configured to calculate a position of the tracking target based on the video images received from the plurality of cameras; a tracker selecting section configured to select a tracker to be instructed to track the tracking target, based on position information of the terminal received from the terminal and the calculated position of the tracking target; and an information transmitting section configured to transmit information of a distance between the tracking target and the terminal during the tracking of the tracking target to the terminal carried by the selected tracker.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: June 29, 2021
    Assignee: NEC CORPORATION
    Inventors: Taichi Ohtsuji, Kazushi Muraoka, Hiroaki Aminaka, Dai Kanetomo, Norio Yamagaki, Takashi Yoshinaga
  • Patent number: 11044612
    Abstract: A first base station (1) is configured to establish a first signaling bearer with a mobility management apparatus (5), establish a second signaling bearer with a second base station (2), and to establish a signaling radio bearer with a mobile station (3) in a first cell (10). The second base station (2) is configured to establish the second signaling bearer with the first base station (1), establish a data bearer with a data transfer apparatus (6), and to establish a data radio bearer with the mobile station (3) in a second cell (20). Furthermore, the first base station (1) is configured to transmit, to the second base station (2) through the second signaling bearer configuration information, necessary to establish the data bearer and the data radio bearer in the second base station (2). Thus, for example, bearer architecture suitable for a C/U plane split scenario is provided.
    Type: Grant
    Filed: January 30, 2020
    Date of Patent: June 22, 2021
    Assignee: NEC CORPORATION
    Inventors: Hiroaki Aminaka, Hisashi Futaki
  • Publication number: 20210176706
    Abstract: A radio terminal (3) can perform carrier aggregation using a first cell (10) of a first radio station (1) and a second cell (20) of a second radio station (2). The first radio station (1) or the second radio station (2) transmits constraint information to the radio terminal (3). The constraint information contains an information clement necessary to specify a reception constraint and/or transmission constraint related to the first cell (10) and/or the second cell (20) when the carrier aggregation is performed. The reception/transmission constraint is a constraint related to downlink signal reception/uplink signal transmission by the radio terminal over one or more subframe periods of the primary cell (10) and the secondary cell (20). It is thus, for example, possible to contribute to reduction in wasteful power consumption in the radio terminal in the carrier aggregation of a plurality of cells served by different radio stations.
    Type: Application
    Filed: January 20, 2021
    Publication date: June 10, 2021
    Applicant: NEC Corporation
    Inventors: Hisashi FUTAKI, Hiroaki AMINAKA
  • Publication number: 20210166536
    Abstract: A tracking support system includes a position calculating section connected with a plurality of cameras arranged in a predetermined monitoring area to transmit video images imaged by the plurality of cameras and configured to calculate a position of the tracking target based on the video images received from the plurality of cameras; a tracker selecting section configured to select a tracker to be instructed to track the tracking target, based on position information of the terminal received from the terminal and the calculated position of the tracking target; and an information transmitting section configured to transmit information of a distance between the tracking target and the terminal during the tracking of the tracking target to the terminal carried by the selected tracker.
    Type: Application
    Filed: January 14, 2021
    Publication date: June 3, 2021
    Applicant: NEC CORPORATION
    Inventors: Taichi OHTSUJI, Kazushi Muraoka, Hiroaki Aminaka, Dai Kanetomo, Norio Yamagaki, Takashi Yoshinaga
  • Patent number: 11012876
    Abstract: A radio terminal (2) is used in a radio communication system (100) and communicates with a radio station (1). The radio terminal (2) includes a measurement unit (20). The measurement unit (20) operates to perform, using a terminal measurement procedure for executing a first terminal measurement corresponding to radio access technology applied to the radio communication system (100), a second terminal measurement of a shared frequency shared by a plurality of radio systems including the radio communication system (100).
    Type: Grant
    Filed: July 17, 2020
    Date of Patent: May 18, 2021
    Assignee: NEC CORPORATION
    Inventors: Hisashi Futaki, Hiroaki Aminaka, Hiroto Sugahara, Yoshikazu Kakura, Kazushi Muraoka
  • Publication number: 20210136850
    Abstract: A first radio station (1) requests or instructs a second radio station (2) to prepare for communication with a radio terminal (3) on a second cell (20) while a first radio connection on a first cell (10) with the radio terminal (3) is established. Further, the first radio station (1) instructs the radio terminal (3) or the second radio station (2) to establish a second radio connection on the second cell (20) with the radio terminal (3) while maintaining the radio connection on the first cell (10) with the radio terminal (3). It is thus for example possible to enable a single radio terminal to establish radio connections with cells of a plurality of radio stations, in order to achieve carrier aggregation of cells operated by different radio stations.
    Type: Application
    Filed: December 9, 2020
    Publication date: May 6, 2021
    Applicant: NEC Corporation
    Inventors: Hisashi FUTAKI, Hiroaki AMINAKA
  • Publication number: 20210120441
    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: December 30, 2020
    Publication date: April 22, 2021
    Applicant: NEC CORPORATION
    Inventors: Hisashi FUTAKI, Kosei KOBAYASHI, Hiroaki AMINAKA
  • Patent number: 10952271
    Abstract: A radio terminal (3) has a function of establishing a second radio connection on a second cell (20) operated by a second radio station (2) while a first radio connection on a first cell (10) operated by a first radio station (1) is established. The first radio station (1) sets up a control bearer for transferring at least a control signal regarding the radio terminal (3) between an upper network (4) and the first radio station (1). Further, the first radio station (1) is configured to trigger setup of a second bearer for transferring user data of the radio terminal (3) between the upper network (4) and the second radio station (2). It is thus for example possible to enable a single radio terminal to simultaneously set up bearers on cells of a plurality of radio stations, in order to achieve carrier aggregation of cells operated by different radio stations.
    Type: Grant
    Filed: October 22, 2019
    Date of Patent: March 16, 2021
    Assignee: NEC Corporation
    Inventors: Hisashi Futaki, Hiroaki Aminaka
  • Patent number: 10932191
    Abstract: A radio terminal (3) can perform carrier aggregation using a first cell (10) of a first radio station (1) and a second cell (20) of a second radio station (2). The first radio station (1) or the second radio station (2) transmits constraint information to the radio terminal (3). The constraint information contains an information element necessary to specify a reception constraint and/or transmission constraint related to the first cell (10) and/or the second cell (20) when the carrier aggregation is performed. The reception/transmission constraint is a constraint related to downlink signal reception/uplink signal transmission by the radio terminal over one or more subframe periods of the primary cell (10) and the secondary cell (20). It is thus, for example, possible to contribute to reduction in wasteful power consumption in the radio terminal in the carrier aggregation of a plurality of cells served by different radio stations.
    Type: Grant
    Filed: February 24, 2020
    Date of Patent: February 23, 2021
    Assignee: NEC Corporation
    Inventors: Hisashi Futaki, Hiroaki Aminaka
  • Patent number: 10911967
    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: Grant
    Filed: December 3, 2019
    Date of Patent: February 2, 2021
    Assignee: NEC CORPORATION
    Inventors: Hisashi Futaki, Kosei Kobayashi, Hiroaki Aminaka
  • Patent number: 10897784
    Abstract: A base station (2) is configured to receive, from a first wireless terminal (1), a first group identifier indicating a first terminal group, and allocate, to the first wireless terminal (1), a second radio resource, rather than a first radio resource, for device-to-device (D2D) communication performed by the first wireless terminal (1). The first radio resource is a radio resource which has already been allocated to any other wireless terminal which has sent the first group identifier. Meanwhile, the second radio resource is a radio resource which has already been allocated to any other wireless terminal which has sent a second group identifier indicating a second terminal group different from the first terminal group. It is thus, for example, possible to preventing a plurality of D2D communication signals, which are transmitted from multiple wireless terminals to a single wireless terminal, from being transmitted on the same radio resource.
    Type: Grant
    Filed: April 19, 2017
    Date of Patent: January 19, 2021
    Assignee: NEC CORPORATION
    Inventors: Kazushi Muraoka, Hiroaki Aminaka
  • Patent number: 10869350
    Abstract: A first radio station (1) requests or instructs a second radio station (2) to prepare for communication with a radio terminal (3) on a second cell (20) while a first radio connection on a first cell (10) with the radio terminal (3) is established. Further, the first radio station (1) instructs the radio terminal (3) or the second radio station (2) to establish a second radio connection on the second cell (20) with the radio terminal (3) while maintaining the radio connection on the first cell (10) with the radio terminal (3). It is thus for example possible to enable a single radio terminal to establish radio connections with cells of a plurality of radio stations, in order to achieve carrier aggregation of cells operated by different radio stations.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: December 15, 2020
    Assignee: NEC Corporation
    Inventors: Hisashi Futaki, Hiroaki Aminaka
  • Patent number: 10863577
    Abstract: A terminating apparatus (801) is configured to terminate first communication, second communication, and third communication. The first communication is unicast communication, the second communication is multicast communication, and the first and the second communications are provided by a first network. The third communication is provided by a second network. It is thus, for example, possible to contribute to improving efficiency or appropriateness of a selection between multicast transmission and unicast transmission and a selection between use of a PS-LTE network and use of a commercial LTE network.
    Type: Grant
    Filed: August 25, 2017
    Date of Patent: December 8, 2020
    Assignee: NEC CORPORATION
    Inventor: Hiroaki Aminaka