Patents by Inventor Kenichi Nakura

Kenichi Nakura 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: 20220131610
    Abstract: A network control device for generating a slice by dividing a network and allocating communication resources to the slice, the slice being a virtual network, the network control device including: a processor; and a memory to store a program which, when executed by the processor, performs processes of: obtaining and holding resource information from a network device included in the network, the resource information including information on a maximum usage rate of communication resources allocated to a previously generated slice in at least one predetermined period; and determining, upon receiving a request for generating a new slice, whether or not the requested slice can be generated on the basis of the resource information held, wherein the resource information includes information on a maximum usage rate of communication resources, which are allocated to the previously generated slice, depending on a request delay concerning the slice in the predetermined period.
    Type: Application
    Filed: January 5, 2022
    Publication date: April 28, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventors: Kenichi NAKURA, Takeshi SUEHIRO, Akiko IWASAKI, Jun MIZUGUCHI
  • Publication number: 20210409343
    Abstract: A network controller is configured to perform, to a new slice request, resource allocation from a resource of unallocated resource information managed by a resource information management unit, and to reallocate the resource to an existing slice request so that an unallocated resource increases based on unallocated resource information managed by the resource information management unit.
    Type: Application
    Filed: September 8, 2021
    Publication date: December 30, 2021
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Takeshi SUEHIRO, Yukio HIRANO, Kenichi NAKURA, Akiko IWASAKI, Hiromu SATO
  • Publication number: 20210367397
    Abstract: A deterioration diagnosis device includes: a temperature acquisition unit acquiring a temperature of an optical transceiver including a laser diode outputting an optical transmission signal; a bias current acquisition unit acquiring a bias current flowing through the diode; a correction function calculation unit calculating a correction function representing a relationship between the acquired temperature and bias current; a temperature correction value calculation unit calculating a temperature correction value for a bias current acquired at the time of deterioration diagnosis, using the correction function; a corrected bias current calculation unit correcting the bias current acquired at the time of the deterioration diagnosis, using the temperature correction value; and a bias current change amount calculation unit determining a state of the laser diode by comparing an initial bias current with a corrected bias current.
    Type: Application
    Filed: August 9, 2021
    Publication date: November 25, 2021
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Satoshi SHIRAI, Yukio HIRANO, Kenichi NAKURA, Kazuyuki ISHIDA
  • Publication number: 20210223061
    Abstract: An object identification device includes: a region determination unit that acquires observed position information indicating positions at which an object is observed, and determines whether each position is in any one of regions into which an area indicated is divided; a road reference position conversion unit that converts each position in the region, into a traveling direction position parallel to an assumed road direction and a transverse direction position perpendicular to the assumed road direction; and a comparison unit that rearranges the positions in order of the traveling direction, creates pairs of front and rear positions, calculates a difference in the traveling direction positions and the transverse direction positions between each pair of positions, and determines that a pair of positions between which the differences are within thresholds specified in respective items are derived from the same object, and a pair of positions between which at least one of the differences is greater than the thre
    Type: Application
    Filed: May 17, 2017
    Publication date: July 22, 2021
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Kyoko Hosoi, Kenichi Nakura, Takeshi Suehiro
  • Publication number: 20210153113
    Abstract: A controller of a radio access network calculates physical path resource information which is resource information about physical paths between devices in the network, and abstract path resource information which expresses the physical path resource information in a representative manner. When receiving a request to create a slice, the controller determines whether a slice that satisfies a requested condition is creatable based on the abstract path resource information and, when determining that the slice that satisfies the requested condition can be created, creates the slice by selecting a physical path that satisfies the requested condition based on the physical path resource information.
    Type: Application
    Filed: January 28, 2021
    Publication date: May 20, 2021
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Kenichi NAKURA, Yukio HIRANO, Takeshi SUEHIRO, Akiko NAGASAWA
  • Publication number: 20210086791
    Abstract: A vehicle traveling control device includes: a communicator periodically receiving a dynamic map; a sensor management circuit collecting, from one or more sensors measuring a state of objects around a vehicle, a result of measurement representing the state of objects around the vehicle; a surrounding information comparator comparing object data represented by the dynamic map with object data represented by the result of measurement, and in response to finding mismatching object data, detecting, from the mismatching object data, data of the dynamic map representing an object within a specified range from the vehicle; and a proximity information processor setting, from the data of the dynamic map detected by the surrounding information comparator, data representing the vehicle as an avoidance non-target object in traveling control, and setting data representing an object other than the vehicle as an avoidance target object in traveling control or the avoidance non-target object.
    Type: Application
    Filed: December 4, 2020
    Publication date: March 25, 2021
    Applicant: Mitsubishi Electric Corporation
    Inventors: Kyoko HOSOI, Kenichi NAKURA, Takeshi SUEHIRO, Takashi SUGIHARA
  • Publication number: 20210074148
    Abstract: A roadside information processing system according to the present disclosure includes a plurality of roadside devices installed on a roadside of a road and capable of communicating with a vehicle travelling on the road, and a plurality of sensors installed on the roadside to perform sensing on the road and its periphery, wherein at least one of the roadside devices includes an edge-server processing unit to obtain first information from in-vehicle devices included in the vehicles and from some of the plurality of the sensors, the first information indicating information about a periphery of the vehicles and about the road and its periphery, and to generate second information by using the first information, the second information indicating a position of the vehicles, a movement direction of the vehicles, and traffic jam conditions on the road.
    Type: Application
    Filed: October 29, 2020
    Publication date: March 11, 2021
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Seiji KOZAKI, Kenichi NAKURA, Takeshi SUEHIRO
  • Publication number: 20210076220
    Abstract: A management device for managing a radio access network includes: a RAN slice management unit configured to manage a slice of the radio access network; a radio resource management unit configured to abstract and manage a radio resource possessed by a radio base station included in a radio network; an optical resource management unit configured to abstract and manage an optical resource possessed by an optical communication device included in an optical network; and a base station resource management unit configured to abstract and manage a base station resource possessed by a base station device included in a base station network. When a slice generation request is received from a higher-level management device, the RAN slice management unit determines an abstracted radio resource, an abstracted optical resource and an abstracted base station resource to be assigned to a slice, based on requested performance of the slice.
    Type: Application
    Filed: November 20, 2020
    Publication date: March 11, 2021
    Applicant: Mitsubishi Electric Corporation
    Inventors: Yukio HIRANO, Kenichi NAKURA, Akiko NAGASAWA, Takeshi SUEHIRO, Fumihiko TANO
  • Patent number: 10924373
    Abstract: An optical line terminal (OLT) for an optical network configured to communicate with optical network units (ONUs) in a PON-type optical network, the OLT including: a processing circuitry, for each ONUs, to manage a transmission delay time in transmission to the ONU to manage an acceptable waiting time of uplink data of the ONU; to obtain an uplink transmission start time and data amount of the optical network unit, based on uplink assignment information; and to generate uplink transmission grant information, which is made up of a time point and time length of uplink transmission to the ONU, wherein the processing circuitry determines the uplink transmission grant information on transmission to the ONU, based on a transmission delay time of the ONU, on the uplink transmission start time and data amount of the ONU, and on the acceptable waiting time of uplink data of the ONU.
    Type: Grant
    Filed: July 25, 2016
    Date of Patent: February 16, 2021
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yukio Hirano, Kenichi Nakura, Takashi Nishitani
  • Publication number: 20210039658
    Abstract: An object identification device according to the present invention includes: an acquisition unit that acquires, from a sensor that measures a position of an object and a speed of the object, sensor information measured by the sensor, and acquires size information from a device that transmits size information indicating a size and a position of the object; a designator adding unit that adds, to each piece of the sensor information, a sensor position designator indicating which part of the object is likely to be detected; and an information integration unit that determines, based on the sensor position designator, whether the object corresponding to the size information and the object corresponding to the sensor information are the same.
    Type: Application
    Filed: March 30, 2018
    Publication date: February 11, 2021
    Applicant: Mitsubishi Electric Corporation
    Inventors: Kyoko HOSOI, Kenichi NAKURA, Takeshi SUEHIRO
  • Publication number: 20200381889
    Abstract: A life prediction method for an optical module that keeps optical output constant by controlling a bias current that is applied to a laser diode includes, by a life prediction device: acquiring a current value of the bias current from the optical module; holding an initial bias current value that is an initial current value of the bias current; calculating the number of digits of a difference value between the bias current value and the initial bias current value, and determining whether there is an increase in the number of digits; calculating a time interval at which occurrence of the increase in the number of digits is detected; and estimating a life of the optical module using the time interval, a first threshold, and the number of digits.
    Type: Application
    Filed: August 17, 2020
    Publication date: December 3, 2020
    Applicant: Mitsubishi Electric Corporation
    Inventors: Takeshi SUEHIRO, Kenichi NAKURA, Hiromu SATO, Kazuyuki ISHIDA, Hideaki OHASHI, Noriyuki IMADA, Nanako HORAYAMA
  • Patent number: 10803751
    Abstract: A processing device according to the present invention includes an object identification unit that generates, based on data measured by sensors, an object identification information that is information indicative of a state of an object, and a reliability degree determination unit that determines a reliability degree of the object identification information using at least one of individual information of the sensors, environmental information obtained when the sensors have performed the measurement, and time information that is a time at which the sensors have performed measurement.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: October 13, 2020
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Seiji Kozaki, Akinori Taira, Kenichi Nakura
  • Publication number: 20200043339
    Abstract: A processing device according to the present invention includes an object identification unit that generates, based on data measured by sensors, an object identification information that is information indicative of a state of an object, and a reliability degree determination unit that determines a reliability degree of the object identification information using at least one of individual information of the sensors, environmental information obtained when the sensors have performed the measurement, and time information that is a time at which the sensors have performed measurement.
    Type: Application
    Filed: April 26, 2017
    Publication date: February 6, 2020
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Seiji KOZAKI, Akinori TAIRA, Kenichi NAKURA
  • Publication number: 20190319866
    Abstract: An optical line terminal (OLT) for an optical network configured to communicate with optical network units (ONUs) in a PON-type optical network, the OLT including: a processing circuitry, for each ONUs, to manage a transmission delay time in transmission to the ONU to manage an acceptable waiting time of uplink data of the ONU; to obtain an uplink transmission start time and data amount of the optical network unit, based on uplink assignment information; and to generate uplink transmission grant information, which is made up of a time point and time length of uplink transmission to the ONU, wherein the processing circuitry determines the uplink transmission grant information on transmission to the ONU, based on a transmission delay time of the ONU, on the uplink transmission start time and data amount of the ONU, and on the acceptable waiting time of uplink data of the ONU.
    Type: Application
    Filed: July 25, 2016
    Publication date: October 17, 2019
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yukio HIRANO, Kenichi NAKURA, Takashi NISHITANI
  • Patent number: 9264213
    Abstract: A time synchronization method for a communication system configured to perform protection switching, the communication system including a first network in which a master station and a slave station are connected via plural physical lines including a working line and a backup line and a second network connected to the slave station, the method including a time synchronization in which the slave station executes, when not detecting a communication failure of a downlink signal transmitted from the master station, synchronization processing for synchronizing, based on a clock of the slave station and timing information, time information transmitted to the second network with time information included in a time synchronization command and suppresses, when detecting a communication failure or receiving a switching notification from the master station apparatus, a synchronization error due to a difference between the clock of the slave station and the timing information.
    Type: Grant
    Filed: February 6, 2012
    Date of Patent: February 16, 2016
    Assignee: Mitsubishi Electric Corporation
    Inventors: Seiji Kozaki, Kenichi Nakura, Yoshifumi Hotta, Jun Mizuguchi
  • Publication number: 20130315587
    Abstract: A communication system in which a combination of redundant configurations of communication lines and a power-saving-mode operating function is incorporated, and includes a power-saving-device identification unit that identifies a slave station device in a power saving mode, and a line switching unit that switches a communication line forming a communication route from the currently used communication line to the backup communication line when a state where a master station device does not receive a signal from any of a plurality of slave station devices except for the slave station device identified by the power-saving-device identification unit as being in the power saving mode among the slave station devices continues for a predetermined time.
    Type: Application
    Filed: January 26, 2012
    Publication date: November 28, 2013
    Applicant: Mitsubishi Electric Corporation
    Inventors: Hiroaki Mukai, Kenichi Nakura
  • Patent number: 8565601
    Abstract: The control device includes a power-saving control unit that intermittently repeats, based on a power saving permission signal transmitted from the master station apparatus, power saving control in which the slave station stops or reduces power supply to a transmitter or a receiver for a predetermined pause duration while maintaining a communication link and a monitoring unit that monitors out of synchronization by comparing a synchronization signal received from the OLT and a time of the ONU. The control device shifts from a registered state to a deregistered state when the monitoring unit detects the out of synchronization. On the other hand, after the pause duration of the power saving control, the control device suppresses the shift to the deregistered state due to the detection of the out of synchronization.
    Type: Grant
    Filed: December 8, 2010
    Date of Patent: October 22, 2013
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kenichi Nakura, Hiroaki Mukai, Seiji Kozaki, Daisuke Ito, Masaki Tanaka
  • Publication number: 20130266306
    Abstract: A time synchronization method for a communication system configured to perform protection switching, the communication system including a first network in which a master station and a slave station are connected via plural physical lines including a working line and a backup line and a second network connected to the slave station, the method including a time synchronization in which the slave station executes, when not detecting a communication failure of a downlink signal transmitted from the master station, synchronization processing for synchronizing, based on a clock of the slave station and timing information, time information transmitted to the second network with time information included in a time synchronization command and suppresses, when detecting a communication failure or receiving a switching notification from the master station apparatus, a synchronization error due to a difference between the clock of the slave station and the timing information.
    Type: Application
    Filed: February 6, 2012
    Publication date: October 10, 2013
    Applicant: Mitsubishi Electric Corporation
    Inventors: Seiji Kozaki, Kenichi Nakura, Yoshifumi Hotta, Jun Mizuguchi
  • Publication number: 20130045005
    Abstract: The control device includes a power-saving control unit that intermittently repeats, based on a power saving permission signal transmitted from the master station apparatus, power saving control in which the slave station stops or reduces power supply to a transmitter or a receiver for a predetermined pause duration while maintaining a communication link and a monitoring unit that monitors out of synchronization by comparing a synchronization signal received from the OLT and a time of the ONU. The control device shifts from a registered state to a deregistered state when the monitoring unit detects the out of synchronization. On the other hand, after the pause duration of the power saving control, the control device suppresses the shift to the deregistered state due to the detection of the out of synchronization.
    Type: Application
    Filed: December 8, 2010
    Publication date: February 21, 2013
    Applicant: Mitsubishi Electric Corporation
    Inventors: Kenichi Nakura, Hiroaki Mukai, Seiji Kozaki, Daisuke Ito, Masaki Tanaka
  • Publication number: 20120128372
    Abstract: An optical line termination includes a deserializer that parallelizes burst data received from a termination device, a fixed-pattern generating unit that generates fixed pattern data that is a predetermined fixed data, and a data selecting unit that selects either the fixed pattern data or the burst data based on a data-head instruction signal indicating a head of the burst data and a data-end instruction signal indicating an end of the burst data, and inputs the selected data to a deserializer as data to be parallelized.
    Type: Application
    Filed: August 3, 2009
    Publication date: May 24, 2012
    Applicant: Mitsubishi Electric Corporation
    Inventors: Kenichi Nakura, Naoki Suzuki, Koshi Sugimura