公开(公告)号：US20240323575A1

公开(公告)日：2024-09-26

申请号：US18694813

申请日：2021-10-04

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Karin UMEDA ,  Kota ASAKA ,  Hiroko NOMURA ,  Hiroshi O ,  Yoshihito SAKAI ,  Hirotaka UJIKAWA ,  Kenji MIYAMOTO ,  Yuka OKAMOTO ,  Tatsuya SHIMADA

IPC: H04Q11/00 ,  H04B10/27

CPC classification number: H04Q11/0062 ,  H04B10/27 ,  H04Q2011/0086

Abstract: A control device including a collection unit that acquires, at a predetermined cycle, cooperation information, which is information indicating a communication state between a communication system that includes a wireless station including an antenna and an allocation device that allocates a wavelength, and a terminal to be communicated, an analysis unit that analyzes the communication state in the communication system on the basis of the cooperation information, and an allocation control unit that controls execution of wavelength allocation by the allocation device on the basis of an analysis result of the analysis unit.

公开(公告)号：US20240275627A1

公开(公告)日：2024-08-15

申请号：US18568692

申请日：2021-06-11

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Takamitsu TOCHINO ,  Yoshihito SAKAI ,  Hirotaka UJIKAWA

IPC: H04L12/28 ,  H04L43/087

CPC classification number: H04L12/28 ,  H04L43/087

Abstract: The signal transfer device receives a periodically transmitted periodic signal and transfers the periodic signal in a reserved window. A control device that controls a signal transfer device includes a storage device configured to store reference information indicating a transmission amount and a transmission period of the periodic signals of each of a plurality of flows received by the signal transfer device. The control device further includes a processor that executes window setting processing based on the reference information. In the window setting processing, the control device sets a schedule of a plurality of windows for each of the plurality of flows in the signal transfer device based on the reference information, and instructs the signal transfer device to reserve the plurality of windows according to the schedule.

公开(公告)号：US20240171521A1

公开(公告)日：2024-05-23

申请号：US18283044

申请日：2021-03-23

Applicant: Nippon Telegraph and Telephone Corporation

Inventor： Takamitsu TOCHINO ,  Tatsuya SHIMADA ,  Keita Takahashi ,  Yoshihito SAKAI

IPC: H04L47/6275 ,  H04L47/56 ,  H04L49/9047

CPC classification number: H04L47/6275 ,  H04L47/56 ,  H04L49/9047

Abstract: A signal transfer device according to an embodiment receives a plurality of signals including an aperiodic signal having a higher priority than other signals, respectively holds the plurality of received signals by a plurality of buffers according to the priority, acquires signal information including at least one of a time at which the aperiodic signal is transmitted or received and a data length of the aperiodic signal, predicts a timing at which the aperiodic signal arrives at the buffer based on the acquired signal information, sets reservation of a period for transmitting the aperiodic signal with priority over other signals based on the predicted timing, controls the plurality of buffers to output the aperiodic signal with priority over other signals in the period in which the reservation is set, and transmits the signal output by the buffer.

公开(公告)号：US20230421506A1

公开(公告)日：2023-12-28

申请号：US18037078

申请日：2020-11-25

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Takamitsu TOCHINO ,  Hirotaka UJIKAWA ,  Yoshihito SAKAI

IPC: H04L47/26 ,  H04Q11/00 ,  H04L43/0882 ,  H04L47/11

CPC classification number: H04L47/266 ,  H04Q11/0067 ,  H04L43/0882 ,  H04L47/11 ,  H04Q2011/0086

Abstract: A user terminal 12-1 can wirelessly or preferentially connect to a router 14 to communicate with an upper network 18, and can communicate with another network 20 via a mobile line. An ONU 16 generates a disconnection notification in a case where congestion exceeding a reference is recognized in the PON communicating with the upper network 18, and generates a connection notification when the congestion is resolved. The router 14 stores the user terminal 12-1 that can communicate with another network 20 among the user terminals 12-1 to 12-4 being connected. In addition, the router 14 disconnects the connection with the user terminal 12-1 that can communicate with another network 20 when the disconnection notification is generated, and attempts reconnection with the user terminal 12-1 that has been disconnected when the connection notification is generated.