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).
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Patent number: 11737128Abstract: 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: GrantFiled: April 2, 2019Date of Patent: August 22, 2023Assignee: FUJITSU LIMITEDInventors: Yoshiaki Ohta, Shinichiro Aikawa, Takayoshi Ode, Junichi Suga, Ryuichi Takechi
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Patent number: 11690092Abstract: 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: GrantFiled: October 5, 2017Date of Patent: June 27, 2023Assignee: FUJITSU LIMITEDInventors: Yoshiaki Ohta, Shinichiro Aikawa, Takayoshi Ode, Junichi Suga, Ryuichi Takechi
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Publication number: 20220394724Abstract: 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: ApplicationFiled: August 18, 2022Publication date: December 8, 2022Applicant: FUJITSU LIMITEDInventors: Yoshiaki Ohta, SHINICHIRO AIKAWA, Takayoshi Ode, Junichi Suga, Ryuichi TAKECHI
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Publication number: 20220337430Abstract: An information processing device (10) detects an authentication status of a network authentication module (12) mounted on the information processing device (10) or a connection status of a network controlled according to the authentication status. Then, the information processing device (10) controls execution of an electronic signature according to signature information stored in the network authentication module (12) on the basis of the detected authentication status or connection status.Type: ApplicationFiled: July 6, 2022Publication date: October 20, 2022Applicant: FUJITSU LIMITEDInventors: Kazuya UNO, Takayuki Hasebe, Masahiro MATSUDA, Tatsuro Matsumoto, Ryuichi TAKECHI
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Patent number: 11432346Abstract: 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: GrantFiled: June 24, 2020Date of Patent: August 30, 2022Assignee: FUJITSU LIMITEDInventors: Yoshiaki Ohta, Shinichiro Aikawa, Takayoshi Ode, Junichi Suga, Ryuichi Takechi
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Publication number: 20220159655Abstract: A base station device includes a processor a communicator. The processor configured to perform, when a terminal device performs wireless communication by using both a first wireless communication method that is a wireless communication method with the base station device and a second wireless communication method that is a wireless communication method with a relay device, data communication by converging the wireless communication in a convergence layer in the first wireless communication method. The communicator configured to identify, even when the relay device relays data that is transmitted and/or received by the second wireless communication method to the base station device by any of the wireless communication methods of the first wireless communication method and the second wireless communication method, a bearer in the first wireless communication method to which the data belongs, and transmit and/or receive the data.Type: ApplicationFiled: February 1, 2022Publication date: May 19, 2022Applicant: FUJITSU LIMITEDInventors: Yoshiaki OHTA, Ryuichi TAKECHI, Yoshihiro KAWASAKI
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Publication number: 20200323002Abstract: 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: ApplicationFiled: June 24, 2020Publication date: October 8, 2020Applicant: FUJITSU LIMITEDInventors: Yoshiaki OHTA, SHINICHIRO AIKAWA, Takayoshi Ode, Junichi Suga, Ryuichi TAKECHI
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Patent number: 10728932Abstract: 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: GrantFiled: August 4, 2017Date of Patent: July 28, 2020Assignee: FUJITSU LIMITEDInventors: Yoshiaki Ohta, Shinichiro Aikawa, Takayoshi Ode, Junichi Suga, Ryuichi Takechi
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Patent number: 10568107Abstract: 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: GrantFiled: October 5, 2017Date of Patent: February 18, 2020Assignee: FUJITSU LIMITEDInventors: Yoshiaki Ohta, Shinichiro Aikawa, Takayoshi Ode, Junichi Suga, Ryuichi Takechi
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Publication number: 20190230676Abstract: 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: ApplicationFiled: April 2, 2019Publication date: July 25, 2019Applicant: FUJITSU LIMITEDInventors: Yoshiaki Ohta, SHINICHIRO AIKAWA, Takayoshi Ode, Junichi Suga, Ryuichi TAKECHI
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Publication number: 20180035440Abstract: 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: ApplicationFiled: October 5, 2017Publication date: February 1, 2018Applicant: FUJITSU LIMITEDInventors: Yoshiaki Ohta, SHINICHIRO AIKAWA, Takayoshi Ode, Junichi Suga, Ryuichi TAKECHI
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Publication number: 20170332422Abstract: 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: ApplicationFiled: August 4, 2017Publication date: November 16, 2017Applicant: FUJITSU LIMITEDInventors: Yoshiaki Ohta, SHINICHIRO AIKAWA, Takayoshi Ode, Junichi Suga, Ryuichi TAKECHI
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Patent number: 9204348Abstract: 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: GrantFiled: November 21, 2014Date of Patent: December 1, 2015Assignee: FUJITSU LIMITEDInventors: Yoshiaki Ohta, Yoshiharu Tajima, Kazuhisa Obuchi, Ryuichi Takechi, Naotoshi Watanabe, Yoshinori Tanaka, Katsumasa Sugiyama
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Publication number: 20150078339Abstract: 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: ApplicationFiled: November 21, 2014Publication date: March 19, 2015Applicant: FUJITSU LIMITEDInventors: Yoshiaki OHTA, Yoshiharu TAJIMA, Kazuhisa OBUCHI, Ryuichi TAKECHI, Naotoshi WATANABE, Yoshinori TANAKA, Katsumasa SUGIYAMA
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Patent number: 8908644Abstract: 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: GrantFiled: July 26, 2012Date of Patent: December 9, 2014Assignee: Fujitsu LimitedInventors: Yoshiaki Ohta, Yoshiharu Tajima, Kazuhisa Obuchi, Ryuichi Takechi, Naotoshi Watanabe, Yoshinori Tanaka, Katsumasa Sugiyama
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Transmitting and receiving location registration messages and data packets in a communication system
Patent number: 8730907Abstract: 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: GrantFiled: January 5, 2009Date of Patent: May 20, 2014Assignee: Fujitsu LimitedInventor: Ryuichi Takechi -
Patent number: 8711810Abstract: 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: GrantFiled: July 26, 2012Date of Patent: April 29, 2014Assignee: Fujitsu LimitedInventors: Yoshiaki Ohta, Yoshiharu Tajima, Kazuhisa Obuchi, Ryuichi Takechi, Naotoshi Watanabe, Yoshinori Tanaka
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Patent number: 8582533Abstract: 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: GrantFiled: July 26, 2012Date of Patent: November 12, 2013Assignee: Fujitsu LimitedInventors: Yoshiaki Ohta, Yoshiharu Tajima, Kazuhisa Obuchi, Ryuichi Takechi, Naotoshi Watanabe, Yoshinori Tanaka, Katsumasa Sugiyama
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Patent number: 8577397Abstract: 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: GrantFiled: September 12, 2012Date of Patent: November 5, 2013Assignee: Fujitsu LimitedInventor: Ryuichi Takechi
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Publication number: 20130059611Abstract: 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: ApplicationFiled: September 12, 2012Publication date: March 7, 2013Applicant: FUJITSU LIMITEDInventor: Ryuichi TAKECHI