Patents by Inventor Ryuichi Takechi

Ryuichi Takechi 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: 20200323002
    Abstract: A wireless communications system includes a base station configured to control a second wireless communication different from a first wireless communication by a control unit configured to control the first wireless communication; and a mobile station configured to be capable of performing data transmission between the mobile station and the base station, using one of the first wireless communication and the second wireless communication. When data is transmitted between the base station and the mobile station using the second wireless communication, a sender station among the base station and the mobile station performs transmission control of using an identifier of a bearer of the data transmitted to a receiver station among the base station and the mobile station and using correspondence information of the identifier and an access category that is QoS information in the second wireless communication to identify the access category of the data and transmit the data.
    Type: Application
    Filed: June 24, 2020
    Publication date: October 8, 2020
    Applicant: FUJITSU LIMITED
    Inventors: Yoshiaki OHTA, SHINICHIRO AIKAWA, Takayoshi Ode, Junichi Suga, Ryuichi TAKECHI
  • Patent number: 10728932
    Abstract: A wireless communications system includes a base station configured to control a second wireless communication different from a first wireless communication by a control unit configured to control the first wireless communication; and a mobile station configured to be capable of performing data transmission between the mobile station and the base station, using one of the first wireless communication and the second wireless communication. When data is transmitted between the base station and the mobile station using the second wireless communication, a sender station among the base station and the mobile station performs transmission control of using an identifier of a bearer of the data transmitted to a receiver station among the base station and the mobile station and using correspondence information of the identifier and an access category that is QoS information in the second wireless communication to identify the access category of the data and transmit the data.
    Type: Grant
    Filed: August 4, 2017
    Date of Patent: July 28, 2020
    Assignee: FUJITSU LIMITED
    Inventors: Yoshiaki Ohta, Shinichiro Aikawa, Takayoshi Ode, Junichi Suga, Ryuichi Takechi
  • Patent number: 10568107
    Abstract: A wireless communications system includes a first wireless-communications-apparatus that controls a second wireless-communication by a controller for a first wireless-communication; a second wireless-communications-apparatus capable of the second wireless-communication; and a third wireless-communications-apparatus capable of data transmission with the first wireless-communications-apparatus via the first or second wireless-communication, and that transmits to the first wireless-communications-apparatus, a control message including an address thereof for the second wireless-communication.
    Type: Grant
    Filed: October 5, 2017
    Date of Patent: February 18, 2020
    Assignee: FUJITSU LIMITED
    Inventors: Yoshiaki Ohta, Shinichiro Aikawa, Takayoshi Ode, Junichi Suga, Ryuichi Takechi
  • Publication number: 20190230676
    Abstract: A communication system includes: a first communication apparatus configured to control a first wireless communication and a second wireless communication different from the first wireless communication; a second communication apparatus configured to communicate using the second communication; and a third communication apparatus configured to perform data communication with the first communication apparatus via the first wireless communication or the second wireless communication, wherein the third communication apparatus transmits to the first communication apparatus a control message that includes an available address of the third wireless communications apparatus used in the second wireless communication, the first communication apparatus notifies the second communication apparatus of the available address of the third communication apparatus, and the second communication apparatus communicate with the third communication apparatus using the address.
    Type: Application
    Filed: April 2, 2019
    Publication date: July 25, 2019
    Applicant: FUJITSU LIMITED
    Inventors: Yoshiaki Ohta, SHINICHIRO AIKAWA, Takayoshi Ode, Junichi Suga, Ryuichi TAKECHI
  • Publication number: 20180035440
    Abstract: A wireless communications system includes a first wireless-communications-apparatus that controls a second wireless-communication by a controller for a first wireless-communication; a second wireless-communications-apparatus capable of the second wireless-communication; and a third wireless-communications-apparatus capable of data transmission with the first wireless-communications-apparatus via the first or second wireless-communication, and that transmits to the first wireless-communications-apparatus, a control message including an address thereof for the second wireless-communication.
    Type: Application
    Filed: October 5, 2017
    Publication date: February 1, 2018
    Applicant: FUJITSU LIMITED
    Inventors: Yoshiaki Ohta, SHINICHIRO AIKAWA, Takayoshi Ode, Junichi Suga, Ryuichi TAKECHI
  • Publication number: 20170332422
    Abstract: A wireless communications system includes a base station configured to control a second wireless communication different from a first wireless communication by a control unit configured to control the first wireless communication; and a mobile station configured to be capable of performing data transmission between the mobile station and the base station, using one of the first wireless communication and the second wireless communication. When data is transmitted between the base station and the mobile station using the second wireless communication, a sender station among the base station and the mobile station performs transmission control of using an identifier of a bearer of the data transmitted to a receiver station among the base station and the mobile station and using correspondence information of the identifier and an access category that is QoS information in the second wireless communication to identify the access category of the data and transmit the data.
    Type: Application
    Filed: August 4, 2017
    Publication date: November 16, 2017
    Applicant: FUJITSU LIMITED
    Inventors: Yoshiaki Ohta, SHINICHIRO AIKAWA, Takayoshi Ode, Junichi Suga, Ryuichi TAKECHI
  • Patent number: 9204348
    Abstract: A control method in a mobile communication system, that includes configuring a discard timer corresponding to a service data unit (SDU) for discarding the SDU according to a value of the discard timer that indicates a time elapsed since the discard timer started at reception of the SDU; when a handover is performed, maintaining the value of the discard timer corresponding to the SDU and taking over the elapsed time of the SDU; and discarding the corresponding SDU when the value of the discard timer reaches a given value.
    Type: Grant
    Filed: November 21, 2014
    Date of Patent: December 1, 2015
    Assignee: FUJITSU LIMITED
    Inventors: Yoshiaki Ohta, Yoshiharu Tajima, Kazuhisa Obuchi, Ryuichi Takechi, Naotoshi Watanabe, Yoshinori Tanaka, Katsumasa Sugiyama
  • Publication number: 20150078339
    Abstract: A control method in a mobile communication system, that includes configuring a discard timer corresponding to a service data unit (SDU) for discarding the SDU according to a value of the discard timer that indicates a time elapsed since the discard timer started at reception of the SDU; when a handover is performed, maintaining the value of the discard timer corresponding to the SDU and taking over the elapsed time of the SDU; and discarding the corresponding SDU when the value of the discard timer reaches a given value.
    Type: Application
    Filed: November 21, 2014
    Publication date: March 19, 2015
    Applicant: FUJITSU LIMITED
    Inventors: Yoshiaki OHTA, Yoshiharu TAJIMA, Kazuhisa OBUCHI, Ryuichi TAKECHI, Naotoshi WATANABE, Yoshinori TANAKA, Katsumasa SUGIYAMA
  • Patent number: 8908644
    Abstract: A control method in a mobile communication system, that includes configuring a discard timer corresponding to a service data unit (SDU) for discarding the SDU according to a value of the timer; maintaining the value of the discard timer corresponding to the SDU when a handover is performed without restarting or resetting the value of the discard timer; and discarding the corresponding SDU when the maintained value of the discard timer reaches a given value.
    Type: Grant
    Filed: July 26, 2012
    Date of Patent: December 9, 2014
    Assignee: Fujitsu Limited
    Inventors: Yoshiaki Ohta, Yoshiharu Tajima, Kazuhisa Obuchi, Ryuichi Takechi, Naotoshi Watanabe, Yoshinori Tanaka, Katsumasa Sugiyama
  • Patent number: 8730907
    Abstract: A network system including a mobile node, a correspondent node for transmitting/receiving a data packet to/from the mobile node, a first router to which the mobile node is connected at a visited domain and a second router to which the mobile node is connected at a moving destination to which the mobile node moves from the first router. The second router including a location registration message generating unit for generating a location registration message of the mobile node and transmitting the location registration message. The first router including a binding cache, a movement managing unit for receiving the location registration message and storing into the binding cache address information from before and after the mobile node moves and an encapsulating unit for receiving the data packet, encapsulating the data packet concerned, and creating and transmitting a data packet containing as a transmission destination the address information after the change.
    Type: Grant
    Filed: January 5, 2009
    Date of Patent: May 20, 2014
    Assignee: Fujitsu Limited
    Inventor: Ryuichi Takechi
  • Patent number: 8711810
    Abstract: A control method in a mobile communication system, that includes configuring a timer corresponding to packet data for discarding the packet data according to a value of the timer; maintaining the value of the timer corresponding to the packet data when a handover is performed without restarting or resetting the value of the timer; and discarding the corresponding packet data when the maintained value of the timer reaches a given value.
    Type: Grant
    Filed: July 26, 2012
    Date of Patent: April 29, 2014
    Assignee: Fujitsu Limited
    Inventors: Yoshiaki Ohta, Yoshiharu Tajima, Kazuhisa Obuchi, Ryuichi Takechi, Naotoshi Watanabe, Yoshinori Tanaka
  • Patent number: 8582533
    Abstract: A mobile communication system, that includes a buffer storing packet data to be sent; and a controller configured for discarding the packet data according to a value of a timer corresponding to the packet data, maintaining the value of the timer corresponding to the packet data when a handover is performed without restarting or resetting the value of the timer, wherein the discarding further includes discarding the corresponding packet data when the value of the timer reaches a given value.
    Type: Grant
    Filed: July 26, 2012
    Date of Patent: November 12, 2013
    Assignee: Fujitsu Limited
    Inventors: Yoshiaki Ohta, Yoshiharu Tajima, Kazuhisa Obuchi, Ryuichi Takechi, Naotoshi Watanabe, Yoshinori Tanaka, Katsumasa Sugiyama
  • Patent number: 8577397
    Abstract: A wireless communication system includes a first base station; one or more second base stations having transmission power lower than the first base station; a mobility management apparatus for managing a location of a mobile terminal in a location registration area accommodating the first base station and the one or more second base stations. The mobility management apparatus includes a selecting unit that selects at least one of the second base stations transmitting a paging signal from among the one or more second base stations, and a paging unit that transmits a paging signal to the mobile terminal via the first base station accommodated in the location registration area, and the at least selected one of the second base stations.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: November 5, 2013
    Assignee: Fujitsu Limited
    Inventor: Ryuichi Takechi
  • Publication number: 20130059611
    Abstract: A wireless communication system includes a first base station; one or more second base stations having transmission power lower than the first base station; a mobility management apparatus for managing a location of a mobile terminal in a location registration area accommodating the first base station and the one or more second base stations. The mobility management apparatus includes a selecting unit that selects at least one of the second base stations transmitting a paging signal from among the one or more second base stations, and a paging unit that transmits a paging signal to the mobile terminal via the first base station accommodated in the location registration area, and the at least selected one of the second base stations.
    Type: Application
    Filed: September 12, 2012
    Publication date: March 7, 2013
    Applicant: FUJITSU LIMITED
    Inventor: Ryuichi TAKECHI
  • Publication number: 20120294151
    Abstract: A control method in a mobile communication system, that includes configuring a timer corresponding to packet data for discarding the packet data according to a value of the timer; maintaining the value of the timer corresponding to the packet data when a handover is performed without restarting or resetting the value of the timer; and discarding the corresponding packet data when the maintained value of the timer reaches a given value.
    Type: Application
    Filed: July 26, 2012
    Publication date: November 22, 2012
    Applicant: FUJITSU LIMITED
    Inventors: Yoshiaki OHTA, Yoshiharu TAJIMA, Kazuhisa OBUCHI, Ryuichi TAKECHI, Naotoshi WATANABE, Yoshinori TANAKA, Katsumasa SUGIYAMA
  • Publication number: 20120294284
    Abstract: A control method in a mobile communication system, that includes configuring a discard timer corresponding to a service data unit (SDU) for discarding the SDU according to a value of the timer; maintaining the value of the discard timer corresponding to the SDU when a handover is performed without restarting or resetting the value of the discard timer; and discarding the corresponding SDU when the maintained value of the discard timer reaches a given value.
    Type: Application
    Filed: July 26, 2012
    Publication date: November 22, 2012
    Applicant: FUJITSU LIMITED
    Inventors: Yoshiaki OHTA, Yoshiharu TAJIMA, Kazuhisa OBUCHI, Ryuichi TAKECHI, Naotoshi WATANABE, Yoshinori TANAKA, Katsumasa SUGIYAMA
  • Publication number: 20120287909
    Abstract: A mobile communication system, that includes a buffer storing packet data to be sent; and a controller configured for discarding the packet data according to a value of a timer corresponding to the packet data, maintaining the value of the timer corresponding to the packet data when a handover is performed without restarting or resetting the value of the timer, wherein the discarding further includes discarding the corresponding packet data when the value of the timer reaches a given value.
    Type: Application
    Filed: July 26, 2012
    Publication date: November 15, 2012
    Applicant: FUJITSU LIMITED
    Inventors: Yoshiaki OHTA, Yoshiharu TAJIMA, Kazuhisa OBUCHI, Ryuichi TAKECHI, Naotoshi WATANABE, Yoshinori TANAKA, Katsumasa SUGIYAMA
  • Patent number: 8233453
    Abstract: A control method in a mobile communication system with a buffer unit for temporarily storing packet data to be sent, includes dropping the packet data stored in the buffer unit before sending when a drop timer corresponding to the packet data before sending reaches a given value or when a drop condition required by a drop mechanism accompanying the buffer unit is satisfied, and dropping the packet data stored in the buffer unit after sending when a drop timer corresponding to the packet data after sending reaches a given value.
    Type: Grant
    Filed: December 30, 2008
    Date of Patent: July 31, 2012
    Assignee: Fujitsu Limited
    Inventors: Yoshiaki Ohta, Yoshiharu Tajima, Kazuhisa Obuchi, Ryuichi Takechi, Naotoshi Watanabe, Yoshinori Tanaka, Katsumasa Sugiyama
  • Patent number: 7949755
    Abstract: A network/service control method comprises a step of acquiring, when providing a communication service to a user, a user context defined as knowledge information about the user associated with an environment surrounding the user and a past behavior pattern of the user, a step of acquiring a user profile defined as information about a user's favorite registered previously by the user at arbitrary timing, and a service control step of determining network requirements for providing the communication service on the basis of the user context and the user profile.
    Type: Grant
    Filed: May 25, 2007
    Date of Patent: May 24, 2011
    Assignee: Fujitsu Limited
    Inventors: Masafumi Katoh, Tsuguo Kato, Ryuichi Takechi, Yoichiro Igarashi, Hitoshi Yamada
  • Publication number: 20100128727
    Abstract: A transmitting apparatus that transmits data to a plurality of receiving apparatuses. The transmitting apparatus includes a transmission part that transmits information for extracting the data whose header is compressed, and a control part that controls the transmission part to transmit the information in a specified cycle to the one or more first receiving apparatus and to transmit the information to a second receiving apparatus at a timing independent of the specified cycle when that second receiving apparatus did not receive the information during the specified cycle.
    Type: Application
    Filed: November 17, 2009
    Publication date: May 27, 2010
    Applicant: FUJITSU LIMITED
    Inventor: Ryuichi TAKECHI