Patents by Inventor Junki ICHIKAWA

Junki ICHIKAWA 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).

  • Patent number: 12363192
    Abstract: This communication system comprises a plurality of computers 1, 2 that each comprise: an optical transport path control unit 14 that adjusts the number of optical transport paths between the computer itself and a connection target computer and that sets the adjusted number of optical transport paths; a remote direct memory access (RDMA) communication unit 11 that, in accordance with the number of optical transport paths 4 announced from the optical transport path control unit 14, chunks data that is to be transferred to the connection target computer; and an RDMA control unit 16 that sets RDMA communication paths the number of which is the same as the number of the optical transport paths 4 pursuant to an instruction from the RDMA communication unit 11.
    Type: Grant
    Filed: September 6, 2021
    Date of Patent: July 15, 2025
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Toru Mano, Junki Ichikawa, Yukio Tsukishima, Kenji Shimizu, Hideki Nishizawa, Tomoya Hibi, Kiwami Inoue
  • Patent number: 12341673
    Abstract: The communication apparatus includes: a processing device that processes communication data to be transmitted to and received from a partner apparatus; a transmission unit that transmits the communication data to the partner apparatus; an internal state measurement unit that measures a state related to transmission of the communication data between the processing device and the transmission unit and a determination unit that determines a communication mode in communication with the partner apparatus from the state. The transmission unit transmits the communication data to the partner apparatus in the determined communication mode.
    Type: Grant
    Filed: January 13, 2021
    Date of Patent: June 24, 2025
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Toru Mano, Hideki Nishizawa, Yukio Tsukishima, Tomoya Hibi, Junki Ichikawa, Kiwami Inoue
  • Publication number: 20250097160
    Abstract: A data transfer system includes: a transmission side data transfer device that transmits a plurality of pieces of data generated by a data generator; and a reception-side data transfer device that transmits a bundle of the pieces of data to a remote computer, the transmission-side data transfer device includes: a distribution unit that distributes the plurality of pieces of data to distribution destinations having priorities of the respective pieces of data; a generation unit that consolidates a plurality of pieces of data respectively distributed to the distribution destinations into each chunk having a size greater than or equal to a certain size, in order from one of the distribution destinations having a high priority; and a transmission unit that transmits each of the chunks to the reception-side data transfer device, and the reception-side data transfer device includes a determination unit that determines the priorities of the pieces of data.
    Type: Application
    Filed: January 20, 2022
    Publication date: March 20, 2025
    Inventors: Tomoya HIBI, Kiwami INOUE, Junki ICHIKAWA, Yukio TSUKISHIMA, Kenji SHIMIZU
  • Publication number: 20250094371
    Abstract: A local terminal transmits to a processing device an RDMA transmission packet in which processing data to be transferred to a memory of an accelerator of each of a first remote terminal and a second remote terminal is set. The processing device acquires a QPN from the first remote terminal, converts a Destination QP of a BTH of the RDMA transmission packet into the QPN acquired from the first remote terminal, and transmits a converted RDMA transmission packet to the first remote terminal. When a connection is established, the processing device acquires a QPN from the second remote terminal, converts the Destination QP of the BTH of the RDMA transmission packet into the QPN acquired from the second remote terminal, and transmits a converted RDMA transmission packet to the second remote terminal. Each of the first and second remote terminal transfers the processing data to the memory of the accelerator.
    Type: Application
    Filed: January 12, 2022
    Publication date: March 20, 2025
    Inventors: Kiwami INOUE, Junki ICHIKAWA, Yukio TSUKISHIMA, Kenji SHIMIZU, Hideki NISHIZAWA
  • Publication number: 20250039262
    Abstract: A communication system includes a plurality of computing machines 1 and 2 connected to an optical network, in which the optical network includes a main signal communication path 4 and a control communication path 3. Each of the computing machines 1 and 2 includes a control unit 14 that sets a remote direct memory access (RDMA) communication path, and a communication unit 11 that transmits a setting request including setting information of the RDMA communication path set by the control unit 14 and setting information for setting the main signal communication path 4 to a computing machine of an access destination via the control communication path 3; and a main signal transmitting/receiving unit 16 that establishes the main signal communication path 4 based on the setting information of the main signal communication path 4.
    Type: Application
    Filed: September 2, 2021
    Publication date: January 30, 2025
    Inventors: Kiwami INOUE, Junki ICHIKAWA, Yukio TSUKISHIMA, Kenji SHIMIZU, Hideki Nishizawa, Toru MANO, Tomoya HIBI
  • Publication number: 20240414092
    Abstract: A communication system includes a first intermediate device 10A and a second intermediate device 10B, in which the first intermediate device includes a buffer management unit 15 that determines a buffer size based on delay information and secures a buffer, a transfer unit 11 that, when data to be transferred to a second device 50 is smaller than a credit of the second intermediate device, transfers a request including the data to the second intermediate device, and a generation unit 12A that generates a pseudo-response to the request and returns the pseudo-response to the first device, and the second intermediate device includes a buffer management unit 15 that determines a buffer size based on the delay information and secures a buffer, a transfer unit 11 that transfers the request to the second device and stores the request in the buffer to update the credit of its own device, and a discarding unit 12B that discards a response received from the second device, deletes the request stored in the buffer, and up
    Type: Application
    Filed: October 8, 2021
    Publication date: December 12, 2024
    Inventors: Tomoya HIBI, Junki ICHIKAWA, Toru MANO, Kazuya ANAZAWA, Yukio TSUKISHIMA, Kenji SHIMIZU, Hideki NISHIZAWA, Koichi TAKASUGI
  • Publication number: 20240394215
    Abstract: An intermediate device 10A is the intermediate device 10A disposed between a requester 30 for transferring data using RDMA and a responder 50. The intermediate device 10A extracts a combination of a QPN of the requester 30 and the QPN of the responder 50 from a packet transmitted and received when establishing the connection, and registers the combination in a QPN table 15. The intermediate device 10A manages an MSN by a WQ table 17, and transitions the MSN number when receiving a request with a flag of Last or Only from the requester 30, and returns a pseudo-Response including the MSN after the transition.
    Type: Application
    Filed: September 27, 2021
    Publication date: November 28, 2024
    Inventors: Junki ICHIKAWA, Hideki Nishizawa, Kenji SHIMIZU, Yukio TSUKISHIMA, Tomoya HIBI, Kiwami INOUE
  • Publication number: 20240385986
    Abstract: A communication system includes a plurality of computing machines connected to an optical network, in which the optical network includes a main signal communication path and a control communication path. Each of the computing machines and includes an RDMA communication unit that performs transmission of setting information for setting the main signal communication path to a computing machine of an access destination via the control communication path; and a main signal transmitting/receiving unit that establishes the main signal communication path based on the setting information. The RDMA communication unit gives an instruction for setting of the RDMA communication path in parallel with the transmission of the setting information. The computing machine further includes an RDMA control unit that secures a memory area for RDMA communication and transmits setting information including the memory area to the computing machine of the access destination.
    Type: Application
    Filed: September 2, 2021
    Publication date: November 21, 2024
    Inventors: Tomoya HIBI, Junki ICHIKAWA, Yukio TSUKISHIMA, Kenji SHIMIZU, Hideki NISHIZAWA, Kiwami INOUE, Toru MANO
  • Publication number: 20240357008
    Abstract: This communication system comprises a plurality of computers 1, 2 that each comprise: an optical transport path control unit 14 that adjusts the number of optical transport paths between the computer itself and a connection target computer and that sets the adjusted number of optical transport paths; a remote direct memory access (RDMA) communication unit 11 that, in accordance with the number of optical transport paths 4 announced from the optical transport path control unit 14, chunks data that is to be transferred to the connection target computer; and an RDMA control unit 16 that sets RDMA communication paths the number of which is the same as the number of the optical transport paths 4 pursuant to an instruction from the RDMA communication unit 11.
    Type: Application
    Filed: September 6, 2021
    Publication date: October 24, 2024
    Inventors: Toru MANO, Junki ICHIKAWA, Yukio TSUKISHIMA, Kenji SHIMIZU, Hideki NISHIZAWA, Tomoya HIBI, Kiwami INOUE
  • Patent number: 12022247
    Abstract: An object of the present disclosure is to provide a data communication system, a computing apparatus, a data communication method, and a program, which are capable of highly reliable data transfer with low latency between computing apparatuses. The present disclosure achieves a highly reliable communication path by directly connecting computing apparatuses via an optical path and transmitting data through the optical path. Further, the present disclosure uses the optical path to achieve RDAM over wavelength transmission in which existing RDMA-enabled protocol stacks such as InfiniBand and TCP/IP/Ether are eliminated. The present disclosure eliminates the protocol stacks, enabling transfer with lower latency than in a case of “simply performing RDMA transmission over the wavelength path”.
    Type: Grant
    Filed: April 21, 2020
    Date of Patent: June 25, 2024
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Yukio Tsukishima, Toru Mano, Takahiro Yamaguchi, Yasuhiro Mochida, Tomoya Hibi, Junki Ichikawa, Daisuke Shirai
  • Publication number: 20240146806
    Abstract: An intermediate device 10A includes a transfer unit 11 that transfers a request including data to be transmitted from a local 30 to a remote 50, and a generation unit 12 that generates a pseudo-response to the request and returns the pseudo-response to the local 30. The intermediate device 10B includes a discard unit 13 that discards a response to the request from the remote 50. An intermediate device 20B includes a generation unit 22 that generates a pseudo-request based on an initial request for requesting data transmission from the local 30 to the remote 50 and transmits the pseudo-request to the remote 50, and a transfer unit 24 that transfers a response including data to be transmitted from the remote 50 to the local 30. The intermediate device 20A includes the discard unit 21 that discards a subsequent request from the local 30.
    Type: Application
    Filed: June 10, 2021
    Publication date: May 2, 2024
    Inventors: Junki ICHIKAWA, Hideki NISHIZAWA, Kenji SHIMIZU, Yukio TSUKISHIMA, Toru MANO, Tomoya HIBI, Kiwami INOUE
  • Patent number: 11924097
    Abstract: An object of the present disclosure is to make it possible to measure an IP flow corresponding to time-varying, high-speed traffic. The present disclosure is a device that monitors traffic in a network, the device comprising a memory that records, for each flow in the network, metadata and flow information to be used in measurement, wherein a traffic state is forecasted using a packet flowing in the network; and a recording area for the metadata and the flow information in the memory is set based on the forecasted traffic state.
    Type: Grant
    Filed: April 14, 2020
    Date of Patent: March 5, 2024
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Toru Mano, Yukio Tsukishima, Tomoya Hibi, Junki Ichikawa
  • Publication number: 20240064077
    Abstract: The communication apparatus 1 includes: a processing device 20 that processes communication data to be transmitted to and received from a partner apparatus 2; a transmission unit 14 that transmits the communication data to the partner apparatus 2; an internal state measurement unit 11 that measures a state related to transmission of the communication data between the processing device 20 and the transmission unit 14; and a determination unit 13 that determines a communication mode in communication with the partner apparatus 2 from the state. The transmission unit 14 transmits the communication data to the partner apparatus 2 in the determined communication mode.
    Type: Application
    Filed: January 13, 2021
    Publication date: February 22, 2024
    Inventors: Toru MANO, Hideki Nishizawa, Yukio TSUKISHIMA, Tomoya HIBI, Junki ICHIKAWA, Kiwami INOUE
  • Publication number: 20230179516
    Abstract: It is an object of the present disclosure to render each module easily replaceable and facilitate construction of a system in which an existing application has been incorporated. The present disclosure provides a router device including: a routing module that performs a routing process on a packet; a functional module that executes any operation on the packet subjected to the routing process performed by the routing module; and a config module that sets a communication path that connects between the routing module and the functional module.
    Type: Application
    Filed: March 24, 2020
    Publication date: June 8, 2023
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Junki ICHIKAWA, Hirokazu TAKAHASHI, Toru MANO, Tomoya HIBI
  • Publication number: 20230179519
    Abstract: An object of the present disclosure is to make it possible to measure an IP flow corresponding to time-varying, high-speed traffic. The present disclosure is a device that monitors traffic in a network, the device comprising a memory that records, for each flow in the network, metadata and flow information to be used in measurement, wherein a traffic state is forecasted using a packet flowing in the network; and a recording area for the metadata and the flow information in the memory is set based on the forecasted traffic state.
    Type: Application
    Filed: April 14, 2020
    Publication date: June 8, 2023
    Inventors: Toru MANO, Yukio TSUKISHIMA, Tomoya HIBI, Junki ICHIKAWA
  • Publication number: 20230179894
    Abstract: An object of the present disclosure is to provide a data communication system, a computing apparatus, a data communication method, and a program, which are capable of highly reliable data transfer with low latency between computing apparatuses. The present disclosure achieves a highly reliable communication path by directly connecting computing apparatuses via an optical path and transmitting data through the optical path. Further, the present disclosure uses the optical path to achieve RDAM over wavelength transmission in which existing RDMA-enabled protocol stacks such as InfiniBand and TCP/IP/Ether are eliminated. The present disclosure eliminates the protocol stacks, enabling transfer with lower latency than in a case of “simply performing RDMA transmission over the wavelength path”.
    Type: Application
    Filed: April 21, 2020
    Publication date: June 8, 2023
    Inventors: Yukio TSUKISHIMA, Toru MANO, Takahiro YAMAGUCHI, Yasuhiro MOCHIDA, Tomoya HIBI, Junki ICHIKAWA, Daisuke SHIRAI
  • Publication number: 20230146378
    Abstract: It is an object of the present disclosure to reduce a packet inflow into the OF controller and suppress a load on the OF controller. The present disclosure provides a packet transfer device, in which: an OpenFlow switch extracts a first packet of a protocol determined in advance, and extracts a second packet in accordance with a rule determined in advance; a NameSpace, connected to the OpenFlow switch via a virtual interface, responds to the extracted first packet to act as proxy for the OpenFlow switch; and a virtual machine, connected to the OpenFlow switch via a virtual interface, processes the extracted second packet to act as proxy for the OpenFlow switch.
    Type: Application
    Filed: March 24, 2020
    Publication date: May 11, 2023
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Junki ICHIKAWA, Tomoya HIBI, Hirokazu TAKAHASHI, Toru MANO
  • Patent number: 11641315
    Abstract: An object is to provide a traffic monitoring method, a traffic monitoring apparatus, and a program capable of efficiently merging data structures of each of the cores in a multi-core environment without reconstructing a data structure, retrieving a data structure, and adjusting the RSS function. In the traffic monitoring method according to an embodiment of the present invention, the elements of the data structures formed in the cores are compared for each item, and statistic values in the elements are brought together into any one of the elements, and the statistic values of the other elements are set to zero. Redundant elements between the data structures can be removed by ignoring elements having a statistic value of zero at the time of merging data structures.
    Type: Grant
    Filed: November 13, 2019
    Date of Patent: May 2, 2023
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Toru Mano, Hitoshi Masutani, Junki Ichikawa
  • Publication number: 20220006713
    Abstract: An object is to provide a traffic monitoring method, a traffic monitoring apparatus, and a program capable of efficiently merging data structures of each of the cores in a multi-core environment without reconstructing a data structure, retrieving a data structure, and adjusting the RSS function. In the traffic monitoring method according to an embodiment of the present invention, the elements of the data structures formed in the cores are compared for each item, and statistic values in the elements are brought together into any one of the elements, and the statistic values of the other elements are set to zero. Redundant elements between the data structures can be removed by ignoring elements having a statistic value of zero at the time of merging data structures.
    Type: Application
    Filed: November 13, 2019
    Publication date: January 6, 2022
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Toru MANO, Hitoshi MASUTANI, Junki ICHIKAWA
  • Patent number: 11095519
    Abstract: An object of the present disclosure is to provide a network device and a method for setting the network device that can, in developing functional modules, perform abnormality detection based on statistical information and setting verification in consideration of a dependency relationship between the functional modules and statistical information and can address a change in a policy in the setting verification and a change in a condition in the abnormality detection. In the network device according to the present disclosure, an existing setting of each module, external information, a dependency relationship, and a policy are collected at one location (setting verification unit) by using a common language. When a new setting is made to the modules, a new dependency relationship is set, or new external information is acquired, the new setting is sent to the setting verification unit and checked against the existing setting, the external information, and the dependency relationship.
    Type: Grant
    Filed: June 21, 2019
    Date of Patent: August 17, 2021
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Tomoya Hibi, Hitoshi Masutani, Hirokazu Takahashi, Junki Ichikawa, Toru Mano