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).

  • RADIO COMMUNICATION SYSTEM, BASE STATION, MOBILE STATION, COMMUNICATION CONTROL METHOD, AND COMPUTER READABLE MEDIUM
    Publication number: 20170325276
    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: July 25, 2017
    Publication date: November 9, 2017
    Applicant: NEC Corporation
    Inventors: Hiroaki AMINAKA, Hisashi FUTAKI
  • Radio communication system, radio station, radio terminal, network apparatus, bearer control method, and computer readable medium
    Patent number: 9814029
    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: June 19, 2013
    Date of Patent: November 7, 2017
    Assignee: NEC Corporation
    Inventors: Hisashi Futaki, Hiroaki Aminaka
  • User equipment and method for resource allocation
    Patent number: 9801212
    Abstract: To solve a problem that unless all of a plurality of AICH signature states are correctly decoded, the contents of reception results cannot be recognized and the error rate of signature decoding will be high. In this embodiment, a base station uses, out of a signature combination, the signature of at least one predetermined position to indicate information containing a preamble reception result and uses the signature of a position other than the predetermined position to indicate a transmission profile information number of an uplink channel for notification to a user equipment. Thus, the error rate related to reception results can be reduced as compared with the case where a single signature combination is used to notify all pieces of information.
    Type: Grant
    Filed: April 8, 2016
    Date of Patent: October 24, 2017
    Assignee: NEC CORPORATION
    Inventors: Hiroaki Aminaka, Kojiro Hamabe, Jinsock Lee
  • RELAY RADIO TERMINAL, CORE NETWORK APPARATUS, AND METHOD THEREFOR
    Publication number: 20170302360
    Abstract: A relay radio terminal (1) is configured to: (a) establish a first radio bearer (300) containing a data radio bearer (301) between the relay radio terminal (1) and a base station (3) and also containing a first GTP tunnel (302) between the base station (3) and a core network (4); (b) establish a second GTP tunnel (320) passing through the first bearer (300); (c) receive or transmit a second packet (501) destined for, or originating from, a remote radio terminal (2) in the second GTP tunnel (320) passing through the first bearer (300); and (d) transmit or receive a second user packet (501) to or from the remote radio terminal (2) via Proximity Service (ProSe) communication. This contributes to achievement of a user-plane architecture suitable for a scenario in which a remote radio terminal communicates with an external network through an inter-terminal direct communication path with a relay radio terminal.
    Type: Application
    Filed: July 15, 2015
    Publication date: October 19, 2017
    Applicant: NEC Corporation
    Inventor: Hiroaki AMINAKA
  • Radio terminal, radio station, radio communication system, and methods implemented therein
    Patent number: 9781618
    Abstract: A radio terminal (2) is provided that can be used in a radio communication system (100) and can communicate 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: June 30, 2016
    Date of Patent: October 3, 2017
    Assignee: NEC Corporation
    Inventors: Hisashi Futaki, Hiroaki Aminaka, Hiroto Sugahara, Yoshikazu Kakura, Kazushi Muraoka
  • CONTROL APPARATUS, RADIO COMMUNICATION DEVICE, AND METHOD THEREFOR
    Publication number: 20170280493
    Abstract: A control apparatus (5) operates to: (a) receive from a first radio terminal (1), through a public land mobile network (100), a start request for ProSe communication (103) to be performed between the first radio terminal (1) and a second radio terminal (2) without communicating through the public land mobile network (100); and (b) receive a QoS requirement regarding the ProSe communication (103) from the second radio terminal (102). This contributes, for example, to ensuring QoS in inter-terminal direct communication required by a requested radio terminal, which has been requested by a requesting radio terminal to perform the inter-terminal direct communication.
    Type: Application
    Filed: July 15, 2015
    Publication date: September 28, 2017
    Applicant: NEC Corporation
    Inventor: Hiroaki AMINAKA
  • Radio communication system, radio station, radio terminal, network apparatus, bearer control method, and computer readable medium
    Patent number: 9775145
    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: June 19, 2013
    Date of Patent: September 26, 2017
    Assignee: NEC Corporation
    Inventors: Hisashi Futaki, Hiroaki Aminaka
  • COMMUNICATION SYSTEM, MOBILE STATION, BASE STATION, RESPONSE DECISION METHOD, RESOURCE CONFIGURATION DECISION METHOD, AND PROGRAM
    Publication number: 20170273076
    Abstract: It is possible to solve the problem that a downstream control information amount is significantly increased if allocation information is periodically reported because no allocation method of a default E-DCH resource configuration is defined for a preamble signature. A base station and a mobile station decide a default resource configuration by using a total number of resource configurations or a value obtained from the total number.
    Type: Application
    Filed: June 8, 2017
    Publication date: September 21, 2017
    Applicant: NEC CORPORATION
    Inventors: Hiroaki AMINAKA, Jinsock LEE
  • Radio communication system, base station, mobile station, communication control method, and computer readable medium
    Patent number: 9750069
    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: May 21, 2013
    Date of Patent: August 29, 2017
    Assignee: NEC Corporation
    Inventors: Hiroaki Aminaka, Hisashi Futaki
  • Establishing simultaneous radio connection between a user equipment and two eNodeBs
    Patent number: 9743448
    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: June 14, 2013
    Date of Patent: August 22, 2017
    Assignee: NEC Corporation
    Inventors: Hisashi Futaki, Hiroaki Aminaka
  • RADIO COMMUNICATION SYSTEM, RADIO STATION, RADIO TERMINAL, COMMUNICATION CONTROL METHOD, AND NON-TRANSITORY COMPUTER READABLE MEDIUM
    Publication number: 20170237531
    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: May 2, 2017
    Publication date: August 17, 2017
    Applicant: NEC Corporation
    Inventors: Hisashi FUTAKI, Hiroaki AMINAKA
  • RADIO COMMUNICATION SYSTEM, RADIO STATION, RADIO TERMINAL, NETWORK APPARATUS, BEARER CONTROL METHOD, AND COMPUTER READABLE MEDIUM
    Publication number: 20170231025
    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: Application
    Filed: March 6, 2017
    Publication date: August 10, 2017
    Applicant: NEC Corporation
    Inventors: Hisashi FUTAKI, Hiroaki AMINAKA
  • CONTROL APPARATUS AND METHOD FOR INTER-TERMINAL DIRECT COMMUNICATION
    Publication number: 20170230847
    Abstract: A control apparatus (5) is adapted to allocate a dedicated radio resource to a plurality of radio terminals (1, 2) for Proximity Service (ProSe) communication (103) performed within a terminal group including the plurality of radio terminals (1, 2), and allocate a shared radio resource to the plurality of radio terminal (1, 2) for ProSe communication performed between a radio terminal (1, 2) belonging to the terminal group and a radio terminal that does not belong to the terminal group. This contributes, for example, to facilitating inter-terminal direct communication.
    Type: Application
    Filed: July 15, 2015
    Publication date: August 10, 2017
    Applicant: NEC Corporation
    Inventor: Hiroaki AMINAKA
  • Communication system, mobile station, base station, response decision method, resource configuration decision method, and program
    Patent number: 9723599
    Abstract: It is possible to solve the problem that a downstream control information amount is significantly increased if allocation information is periodically reported because no allocation method of a default E-DCH resource configuration is defined for a preamble signature. A base station and a mobile station decide a default resource configuration by using a total number of resource configurations or a value obtained from the total number.
    Type: Grant
    Filed: June 21, 2016
    Date of Patent: August 1, 2017
    Assignee: NEC CORPORATION
    Inventors: Hiroaki Aminaka, Jinsock Lee
  • CONTROL APPARATUS, RADIO STATION, RADIO TERMINAL, AND METHOD OF CONTROLLING UTILIZATION OF SHARED FREQUENCY
    Publication number: 20170215084
    Abstract: In one embodiment, a controller (3) operates to control, based on at least one condition, utilization by a first radio station (1) of a shared frequency shared by a plurality of radio systems including a radio communication system (100). The at least one condition includes a first condition regarding communication capability on the shared frequency of at least one radio terminal (2) belonging to a cell (11) operated by the first radio station (1). This embodiment therefore contributes to efficient utilization of the shared frequency (e.g., TVWS) shared by the plurality of radio systems.
    Type: Application
    Filed: January 13, 2017
    Publication date: July 27, 2017
    Applicant: NEC Corporation
    Inventors: Hisashi FUTAKI, Hiroto SUGAHARA, Hiroaki AMINAKA
  • Radio communication system, radio terminal, radio network, radio communication method and program
    Patent number: 9693243
    Abstract: A radio terminal, which has a function to collect and report measurement information designated by a radio network, comprises: means for receiving collection/reporting control information related to the radio terminal's execution of at least one of the collection of measurement information and the reporting of the measurement information to the radio network; and control means for executing, based on the collection/reporting control information, at least one of the collection and the reporting if execution determination information, which is related to at least one of the collection of the measurement information and the reporting of the measurement information to be executed by the local terminal, satisfies a given determination criterion.
    Type: Grant
    Filed: January 5, 2011
    Date of Patent: June 27, 2017
    Assignee: NEC CORPORATION
    Inventors: Hisashi Futaki, Hiroaki Aminaka
  • ESTABLISHING SIMULTANEOUS RADIO CONNECTION BETWEEN A USER EQUIPMENT AND TWO ENODEBS
    Publication number: 20170180091
    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: March 3, 2017
    Publication date: June 22, 2017
    Inventors: Hisashi FUTAKI, Hiroaki AMINAKA
  • Radio station and method of processing user data with radio station
    Patent number: 9622260
    Abstract: A radio station (1) includes a first part (1A) and a second part (1B). The second part (1B) can be arranged so as to be physically separated from the first part (1A) and is connected to the first part (1A) via a transmission line (40) so as to be able to communicate with the first part. Each of the first part (1A) and the second part (1B) includes a digital signal processing unit (11A, 11B) and is capable of alternatively performing digital signal processing for user data. An analog signal processing unit (13) arranged in the second part performs analog signal processing including at least one of frequency conversion and power amplification to provide an air interface to a mobile station.
    Type: Grant
    Filed: October 3, 2012
    Date of Patent: April 11, 2017
    Assignee: NEC Corporation
    Inventors: Hiroaki Aminaka, Kojiro Hamabe
  • Mobile communication system, base station apparatus, mobile station apparatus, control method, and computer readable medium
    Patent number: 9609528
    Abstract: A first transmission controller (13) causes a second base station (7) to transmit first configuration information (CFG1) regarding a first cell (11) using a radio channel capable of being received by at least one first base station (1). A second transmission controller (14) selects a base station from among the at least one first base station (1), and transmits second configuration information (CFG2) regarding the first cell (11) to the selected base station from a higher-level network (15) via an access line (16).
    Type: Grant
    Filed: August 6, 2010
    Date of Patent: March 28, 2017
    Assignee: NEC CORPORATION
    Inventors: Hiroaki Aminaka, Kojiro Hamabe
  • METHOD AND DEVICE FOR ALLOCATING COMMON CHANNEL RESOURCES
    Publication number: 20170079073
    Abstract: A resource allocation method and device are provided that can achieve uniform loads on and stable quality of a common channel available to mobile stations having no dedicated channels. A method for allocating common channel resources in a system in which a plurality of first radio communication devices transmit data to a second radio communication device over a common channel, based on first resource allocation information, includes: by the second radio communication device, transmitting second resource allocation information to at least one of the first radio communication devices; and by each of the first radio communication devices, transmitting data to the second radio communication device over the common channel, based on any one of the first resource allocation information and the second resource allocation information.
    Type: Application
    Filed: November 28, 2016
    Publication date: March 16, 2017
    Applicant: NEC CORPORATION
    Inventors: Hiroaki AMINAKA, Kojiro HAMABE, Jinsock LEE