Patents by Inventor Masahiro Serizawa

Masahiro Serizawa 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: 20210051447
    Abstract: A multicast control device capable of reducing the distribution time of multicast data is provided. A multicast control device (10) according to the present disclosure includes a determination unit (11) configured to determine whether the number of communication terminals joining a multicast service exceeds a predetermined threshold, and a session control unit (12) configured to start a multicast session for a plurality of communication terminals joining the multicast service when it is determined that the number of communication terminals joining the multicast service exceeds the predetermined threshold.
    Type: Application
    Filed: February 8, 2019
    Publication date: February 18, 2021
    Applicant: NEC CORPORATION
    Inventors: Akira KAMEI, Torn YAMADA, Kyoji HIRATA, Masahiro SERIZAWA, Satoshi HASEGAWA, Masashi SHIMOMA
  • Publication number: 20210021967
    Abstract: A multicast control device capable of reducing the distribution time of multicast data is provided. A multicast control device (10) according to the present disclosure includes a determination unit (11) configured to determine whether the number of communication terminals joining a multicast service exceeds a predetermined threshold, and a session control unit (12) configured to start a multicast session for a plurality of communication terminals joining the multicast service when it is determined that the number of communication terminals joining the multicast service exceeds the predetermined threshold.
    Type: Application
    Filed: February 8, 2019
    Publication date: January 21, 2021
    Applicant: NEC CORPORATION
    Inventors: Akira KAMEI, Toru YAMADA, Kyoji HIRATA, Masahiro SERIZAWA, Satoshi HASEGAWA, Masashi SHIMOMA
  • Publication number: 20200413229
    Abstract: A multicast control device capable of reducing the processing load of a core network device that occurs when a large number of communication devices use a multicast service is provided. A multicast control device (10) according to the present disclosure includes a communication unit (13) configured to receive a joining request message from a communication terminal to join a multicast service, a determination unit (11) configured to determine whether the number of communication terminals already joining the multicast service reaches a predetermined threshold, and a management unit (12) configured to reject joining of the communication terminal having sent the joining request message to the multicast service when it is determined that the number of communication terminals already joining the multicast service reaches the predetermined threshold.
    Type: Application
    Filed: February 8, 2019
    Publication date: December 31, 2020
    Applicant: NEC CORPORATION
    Inventors: Akira KAMEI, Torn YAMADA, Kyoji HIRATA, Masahiro SERIZAWA, Satoshi HASEGAWA, Masashi SHIMOMA
  • Patent number: 10873874
    Abstract: The present disclosure aims to provide a base station, a radio relay station, a communication method, and a program capable of preventing communication from being unavailable when the base station is brought into a high load condition. A base station (10) configured to communicate with a communication terminal (30) through a radio relay station (20), the base station (10) including: a control unit (11) configured to detect whether the own apparatus is in an overload condition exceeding a predetermined load; and a communication unit (12) configured to transmit, in order to cause the radio relay station (20) to connect to another base station that is not in an overload condition, information about the other base station to the radio relay station (20) when the control unit (11) detects that the own apparatus is in an overload condition.
    Type: Grant
    Filed: January 24, 2018
    Date of Patent: December 22, 2020
    Assignee: NEC CORPORATION
    Inventors: Akira Kamei, Toru Yamada, Kyoji Hirata, Masahiro Serizawa, Yumiko Okuyama, Masashi Shimoma, Satoshi Hasegawa
  • Patent number: 10873890
    Abstract: The present disclosure aims to provide a base station, a radio relay station, a communication method, and a program capable of preventing communication from being unavailable when the base station is brought into a high load condition. A base station (10) configured to communicate with a communication terminal (30) through a radio relay station (20), the base station (10) including: a control unit (11) configured to detect whether the own apparatus is in an overload condition exceeding a predetermined load; and a communication unit (12) configured to transmit, in order to cause the radio relay station (20) to connect to another base station that is not in an overload condition, information about the other base station to the radio relay station (20) when the control unit (11) detects that the own apparatus is in an overload condition.
    Type: Grant
    Filed: January 23, 2018
    Date of Patent: December 22, 2020
    Assignee: NEC CORPORATION
    Inventors: Akira Kamei, Toru Yamada, Masahiro Serizawa, Kyoji Hirata, Yumiko Okuyama, Masashi Shimoma, Satoshi Hasegawa
  • Patent number: 10841785
    Abstract: The present disclosure aims to provide a core node capable of reducing the number of messages or an amount of data to be transmitted to the core node. A core node (10) according to the present disclosure includes: a congestion state detector (11) configured to detect a congestion state of an own apparatus; a communication unit (13) configured to receive a NAS request message that has specified an APN from a radio terminal (20); and a controller (12) configured to determine that processing regarding the NAS request message will not be executed while the congestion state of the own apparatus is being detected. The communication unit (13) transmits a reject message including a plurality of APNs that can be specified by the radio terminal (20) to the radio terminal (20) when it is determined in the controller (12) that the processing regarding the NAS request message will not be executed.
    Type: Grant
    Filed: November 28, 2016
    Date of Patent: November 17, 2020
    Assignee: NEC CORPORATION
    Inventors: Toru Yamada, Yumiko Okuyama, Masashi Shimoma, Akira Kamei, Masahiro Serizawa, Kyoji Hirata, Satoshi Hasegawa
  • Publication number: 20200305021
    Abstract: An object is to provide a policy control system that can easily change a policy. A policy control system according to the present invention includes a PCRF entity (10) including a policy control unit (11) for determining a policy to be applied to a group including a plurality of wireless terminals according to environmental information changed at a specified timing and a PCEF entity (20) including a policy control execution unit (21) for applying the policy determined by the policy control unit (11) to communication related to the plurality of wireless terminals included in the group.
    Type: Application
    Filed: November 28, 2016
    Publication date: September 24, 2020
    Applicant: NEC CORPORATION
    Inventors: Kyoji HIRATA, Toru YAMADA, Masahiro SERIZAWA, Akira KAMEI, Yumiko OKUYAMA, Masashi SHIMOMA, Satoshi HASEGAWA
  • Publication number: 20200288350
    Abstract: A service control apparatus (20) according to the present disclosure includes: a communication unit (21) configured to receive, from each of service providing apparatuses (30, 32, 34), a communication pattern that defines a timing of communication between each of the service providing apparatuses and a communication terminal (10); and a controller (22) configured to predict a load of a network that performs data transmission between the communication terminal (10) and each of the service providing apparatuses based on the plurality of communication patterns. When it is predicted in the controller (22) that the load of the network will become higher than a predetermined threshold, the communication unit (21) transmits a message for prompting the communication pattern to change to at least one of the plurality of service providing apparatuses.
    Type: Application
    Filed: May 10, 2018
    Publication date: September 10, 2020
    Applicant: NEC Corporation
    Inventors: Toru YAMADA, Akira KAMEI, Yumiko OKUYAMA, Kyoji HIRATA, Masahiro SERIZAWA, Satoshi HASEGAWA, Masashi SHIMOMA
  • Publication number: 20200275374
    Abstract: A service control apparatus (20) according to the present disclosure includes: a communication unit (21) configured to receive, from a service providing apparatus (30), downlink data destined for a communication terminal (10), and information about a maximum allowable delay time of the downlink data; and a control unit (22) configured to determine whether the maximum allowable delay time expires by a communication enabled timing at which the communication terminal (10) in a power saving state can next perform communication, in which when the maximum allowable delay time expires by the communication enabled timing, the communication unit (21) transmits, to the service providing apparatus (30), information indicating that the downlink data cannot be transmitted to the communication terminal (10).
    Type: Application
    Filed: May 10, 2018
    Publication date: August 27, 2020
    Applicant: NEC CORPORATION
    Inventors: Akira KAMEI, Toru YAMADA, Yumiko OKUYAMA, Kyoji HIRATA, Masahiro SERIZAWA, Satoshi HASEGAWA, Masashi SHIMOMA
  • Patent number: 10757603
    Abstract: To avoid congestion and an overload at the time of data transmission from an IoT device to a wireless network, at least one gateway apparatus is controlled to execute a gateway function at a first timing at a first position, collect data from a plurality of devices present near the first position, and transmit aggregated data to a base station, and to execute the gateway function at a second timing different from the first timing at a second position different from the first position, collect data from a plurality of devices present near the second position, and transmit aggregated data to the base station.
    Type: Grant
    Filed: September 21, 2017
    Date of Patent: August 25, 2020
    Assignee: NEC Corporation
    Inventors: Akira Kamei, Toru Yamada, Masahiro Serizawa, Kyoji Hirata, Yumiko Okuyama, Satoshi Hasegawa, Masashi Shimoma
  • Patent number: 10743209
    Abstract: The present invention addresses the issue of responding to a state in which operation has stopped as a result of high frequency triggering of a specified application either intentionally or as a result of a malfunction, etc. The present invention relates to communication system including: a monitoring unit that monitors the occurrence state of triggering messages on the basis of port number information identifying port numbers included in triggering messages that trigger a terminal; and a control unit that controls transmission of the triggering messages to the terminal, on the basis of the occurrence state.
    Type: Grant
    Filed: July 28, 2016
    Date of Patent: August 11, 2020
    Assignee: NEC CORPORATION
    Inventors: Toru Yamada, Kyoji Hirata, Akira Kamei, Masahiro Serizawa, Hotaka Sugano, Satoshi Hasegawa, Masashi Shimoma
  • Publication number: 20200236621
    Abstract: A service control apparatus (20) according to the present disclosure includes: a communication unit (21) configured to receive a first communication pattern that defines a timing of communication between a service providing apparatus (30) and a communication terminal (10) from the service providing apparatus (30) and a second communication pattern that defines a timing of communication between a service providing apparatus (32) and the communication terminal (10) from the service providing apparatus (32); and a controller (22) configured to determine whether the first communication pattern and the second communication pattern indicate communication timings different from each other. When the first communication pattern and the second communication pattern indicate communication timings different from each other, the communication unit (21) transmits a message to the second service providing apparatus (32) requesting it to change its communication pattern to the first communication pattern.
    Type: Application
    Filed: May 10, 2018
    Publication date: July 23, 2020
    Applicant: NEC Corporation
    Inventors: Toru YAMADA, Akira KAMEI, Yumiko OKUYAMA, Kyoji HIRATA, Masahiro SERIZAWA, Satoshi HASEGAWA, Masashi SHIMOMA
  • Patent number: 10638360
    Abstract: A system of this invention is directed to a communication processing system that copes with a failure while avoiding network congestion or overload by reducing signaling even if a device cannot receive a group message. This communication processing system forms VPLMN (Visited Public Land Mobile Network), and includes a group messaging request acquirer that acquires, from an application, a group messaging request to be distributed to a plurality of devices, a group messaging request distributer that distributes the group messaging request to the plurality of devices, and a redistribution instructor that instructs, when receiving no response to the group messaging request from any one device in the plurality of devices within a predetermined time, the group messaging request distributer to redistribute the group messaging request to a service area including the any one device based on error information of the service area.
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: April 28, 2020
    Assignee: NEC CORPORATION
    Inventors: Toru Yamada, Kyoji Hirata, Akira Kamei, Hotaka Sugano, Masahiro Serizawa, Satoshi Hasegawa, Masashi Shimoma, Yumiko Okuyama
  • Patent number: 10623919
    Abstract: An IoT device for properly performing charging even when data from an IoT device is relayed and transmitted to a base station includes a first transmitter that directly transmits acquired data to the base station, a second transmitter that transmits the data to a neighboring device by near-field communication to relay the data by the neighboring device and transmit the data to the base station, and a third transmitter that transmits, to the base station, communication cost bearer information representing that the user of the IoT device bears the communication cost of the data relayed by the neighboring device and transmitted.
    Type: Grant
    Filed: September 21, 2017
    Date of Patent: April 14, 2020
    Assignee: NEC Corporation
    Inventors: Toru Yamada, Akira Kamei, Masahiro Serizawa, Kyoji Hirata, Yumiko Okuyama, Satoshi Hasegawa, Masashi Shimoma
  • Publication number: 20200112902
    Abstract: The present disclosure aims to provide a base station, a radio relay station, a communication method, and a program capable of preventing communication from being unavailable when the base station is brought into a high load condition. A base station (10) configured to communicate with a communication terminal (30) through a radio relay station (20), the base station (10) including: a control unit (11) configured to detect whether the own apparatus is in an overload condition exceeding a predetermined load; and a communication unit (12) configured to transmit, in order to cause the radio relay station (20) to connect to another base station that is not in an overload condition, information about the other base station to the radio relay station (20) when the control unit (11) detects that the own apparatus is in an overload condition.
    Type: Application
    Filed: January 23, 2018
    Publication date: April 9, 2020
    Applicant: NEC CORPORATION
    Inventors: Akira KAMEI, Toru YAMADA, Masahiro SERIZAWA, Kyoji HIRATA, Yumiko OKUYAMA, Masashi SHIMOMA, Satoshi HASEGAWA
  • Patent number: 10588082
    Abstract: A wireless communication system that enables a wireless terminal to perform communication using a plurality of component carriers having different frequencies. The wireless communication system monitors a communication state of each of the component carriers allocated to the wireless terminal; distributes, to the component carriers, data to be transmitted, based on the communication state of each of the component carriers; starts a reception operation at a predetermined timing in a non-reception period of a second cycle during a discontinuous reception operation at the second cycle in some of the component carriers allocated to the wireless terminal, and performs the reception operation a predetermined number of times, the second cycle being longer than a first cycle.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: March 10, 2020
    Assignee: NEC CORPORATION
    Inventors: Toru Yamada, Akira Kamei, Masahiro Serizawa, Hotaka Sugano, Satoshi Hasegawa, Masashi Shimoma
  • Publication number: 20200037202
    Abstract: The present disclosure aims to provide a base station, a radio relay station, a communication method, and a program capable of preventing communication from being unavailable when the base station is brought into a high load condition. A base station (10) configured to communicate with a communication terminal (30) through a radio relay station (20), the base station (10) including: a control unit (11) configured to detect whether the own apparatus is in an overload condition exceeding a predetermined load; and a communication unit (12) configured to transmit, in order to cause the radio relay station (20) to connect to another base station that is not in an overload condition, information about the other base station to the radio relay station (20) when the control unit (11) detects that the own apparatus is in an overload condition.
    Type: Application
    Filed: January 24, 2018
    Publication date: January 30, 2020
    Applicant: NEC CORPORATION
    Inventors: Akira KAMEI, Toru YAMADA, Kyoji HIRATA, Masahiro SERIZAWA, Yumiko OKUYAMA, Masashi SHIMOMA, Satoshi HASEGAWA
  • Publication number: 20200029184
    Abstract: An IoT device for properly performing charging even when data from an IoT device is relayed and transmitted to a base station includes a first transmitter that directly transmits acquired data to the base station, a second transmitter that transmits the data to a neighboring device by near-field communication to relay the data by the neighboring device and transmit the data to the base station, and a third transmitter that transmits, to the base station, communication cost bearer information representing that the user of the IoT device bears the communication cost of the data relayed by the neighboring device and transmitted.
    Type: Application
    Filed: September 21, 2017
    Publication date: January 23, 2020
    Applicant: NEC Corporation
    Inventors: Toru YAMADA, Akira KAMEI, Masahiro SERIZAWA, Kyoji HIRATA, Yumiko OKUYAMA, Satoshi HASEGAWA, Masashi SHIMOMA
  • Publication number: 20200022015
    Abstract: To avoid congestion and an overload at the time of data transmission from an IoT device to a wireless network, at least one gateway apparatus is controlled to execute a gateway function at a first timing at a first position, collect data from a plurality of devices present near the first position, and transmit aggregated data to a base station, and to execute the gateway function at a second timing different from the first timing at a second position different from the first position, collect data from a plurality of devices present near the second position, and transmit aggregated data to the base station.
    Type: Application
    Filed: September 21, 2017
    Publication date: January 16, 2020
    Applicant: NEC Corporation
    Inventors: Akira KAMEI, Toru YAMADA, Masahiro SERIZAWA, Kyoji HIRATA, Yumiko OKUYAMA, Satoshi HASEGAWA, Masashi SHIMOMA
  • Publication number: 20200022059
    Abstract: An information processing apparatus that suppresses a power consumption problem in a relay terminal includes a first controller that controls an IoT device to perform multihop routing via at least one relay on an upload of data from the IoT device to a base station, and a second controller that controls the base station to use, on a down-link from the base station to the IoT device, a route different from a route that uses at least one relay.
    Type: Application
    Filed: September 21, 2017
    Publication date: January 16, 2020
    Applicant: NEC Corporation
    Inventors: Akira KAMEI, Toru YAMADA, Masahiro SERIZAWA, Kyoji HIRATA, Yumiko OKUYAMA, Satoshi HASEGAWA, Masashi SHIMOMA