公开(公告)号：US20250097160A1

公开(公告)日：2025-03-20

申请号：US18728270

申请日：2022-01-20

Applicant: Nippon Telegraph and Telephone Corporation

Inventor： Tomoya HIBI ,  Kiwami INOUE ,  Junki ICHIKAWA ,  Yukio TSUKISHIMA ,  Kenji SHIMIZU

IPC: H04L47/24 ,  H04L67/06

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.

公开(公告)号：US20250039262A1

公开(公告)日：2025-01-30

申请号：US18688109

申请日：2021-09-02

Applicant: Nippon Telegraph and Telephone Corporation

Inventor： Kiwami INOUE ,  Junki ICHIKAWA ,  Yukio TSUKISHIMA ,  Kenji SHIMIZU ,  Hideki Nishizawa ,  Toru MANO ,  Tomoya HIBI

IPC: H04L67/1097

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.

公开(公告)号：US20240357008A1

公开(公告)日：2024-10-24

申请号：US18687581

申请日：2021-09-06

Applicant: Nippon Telegraph and Telephone Corporation

Inventor： Toru MANO ,  Junki ICHIKAWA ,  Yukio TSUKISHIMA ,  Kenji SHIMIZU ,  Hideki NISHIZAWA ,  Tomoya HIBI ,  Kiwami INOUE

IPC: H04L67/1097

CPC classification number: H04L67/1097

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.

公开(公告)号：US20230179519A1

公开(公告)日：2023-06-08

申请号：US17917296

申请日：2020-04-14

Applicant: Nippon Telegraph and Telephone Corporation

Inventor： Toru MANO ,  Yukio TSUKISHIMA ,  Tomoya HIBI ,  Junki ICHIKAWA

IPC: H04L45/00 ,  H04L43/062

CPC classification number: H04L45/70 ,  H04L43/062

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.

公开(公告)号：US20240414092A1

公开(公告)日：2024-12-12

申请号：US18697928

申请日：2021-10-08

Applicant: Nippon Telegraph and Telephone Corporation

Inventor： Tomoya HIBI ,  Junki ICHIKAWA ,  Toru MANO ,  Kazuya ANAZAWA ,  Yukio TSUKISHIMA ,  Kenji SHIMIZU ,  Hideki NISHIZAWA ,  Koichi TAKASUGI

IPC: H04L47/30 ,  H04L49/9005

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 updates the credit.

公开(公告)号：US20210135945A1

公开(公告)日：2021-05-06

申请号：US17255057

申请日：2019-06-21

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Tomoya HIBI ,  Hitoshi MASUTANI ,  Hirokazu TAKAHASHI ,  Junki ICHIKAWA ,  Toru MANO

IPC: H04L12/24

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. Then, when the new setting is in a normal range of the policy, the new setting is made to the modules.

公开(公告)号：US20240385986A1

公开(公告)日：2024-11-21

申请号：US18687875

申请日：2021-09-02

Applicant: Nippon Telegraph and Telephone Corporation

Inventor： Tomoya HIBI ,  Junki ICHIKAWA ,  Yukio TSUKISHIMA ,  Kenji SHIMIZU ,  Hideki NISHIZAWA ,  Kiwami INOUE ,  Toru MANO

IPC: G06F15/173 ,  G06F21/60

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.

公开(公告)号：US20240064077A1

公开(公告)日：2024-02-22

申请号：US18270935

申请日：2021-01-13

Applicant: Nippon Telegraph and Telephone Corporation

Inventor： Toru MANO ,  Hideki Nishizawa ,  Yukio TSUKISHIMA ,  Tomoya HIBI ,  Junki ICHIKAWA ,  Kiwami INOUE

IPC: H04L43/08

CPC classification number: H04L43/08

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.

公开(公告)号：US20230179894A1

公开(公告)日：2023-06-08

申请号：US17920210

申请日：2020-04-21

Applicant: Nippon Telegraph and Telephone Corporation

Inventor： Yukio TSUKISHIMA ,  Toru MANO ,  Takahiro YAMAGUCHI ,  Yasuhiro MOCHIDA ,  Tomoya HIBI ,  Junki ICHIKAWA ,  Daisuke SHIRAI

IPC: H04Q11/00 ,  G06F13/28

CPC classification number: H04Q11/0005 ,  G06F13/28 ,  G06F2213/28

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”.

公开(公告)号：US20230146378A1

公开(公告)日：2023-05-11

申请号：US17912546

申请日：2020-03-24

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Junki ICHIKAWA ,  Tomoya HIBI ,  Hirokazu TAKAHASHI ,  Toru MANO

IPC: H04L45/76 ,  H04L45/00

CPC classification number: H04L45/76 ,  H04L45/566

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.