公开(公告)号：US20230164087A1

公开(公告)日：2023-05-25

申请号：US17912955

申请日：2020-03-24

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Yushi KOYASAKO ,  Takashi YAMADA

IPC: H04L47/36 ,  H04L43/087

CPC classification number: H04L47/36 ,  H04L43/087

Abstract: A control system includes a control device that controls a control target device; and one or more communication devices that execute communication processing between the control target device and the control device. Each of the communication devices includes a division determination unit that determines whether data used for controlling the control target device per a certain cycle has been divided into a plurality of cycles each being the certain cycle; and a control unit that, when it is determined that the data used for control per the cycle has been divided, sets a size of a packet to be increased so that data required for control per the cycle is contained in the packet, or sets a length of a burst frame to be increased so that data required for control per the cycle is contained in the burst frame.

公开(公告)号：US20250021373A1

公开(公告)日：2025-01-16

申请号：US18712021

申请日：2021-11-25

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Sei KOU ,  Takashi YAMADA ,  Tomoya HATANO

IPC: G06F9/455

Abstract: A control device includes an activation unit configured to cause another virtual machine or another container to activate an application that is activated in a virtual machine or a container constructed in a server and periodically transmits control information to a control target device, a communication setting unit configured to perform, in a case where the application has been activated, setting for enabling communication between the activated application and the control target device, and a deriving unit configured to derive, as a timing at which the activation unit activates the application, a timing at which the setting is not performed between transmission of the control information from the application and reception of the control information by the control target device, wherein the activation unit causes the another virtual machine or the another container to activate the application at the derived timing.

公开(公告)号：US20240323704A1

公开(公告)日：2024-09-26

申请号：US18269370

申请日：2020-12-28

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Ryota SHIINA ,  Shinya TAMAKI ,  Tetsuya SUZUKI ,  Yasutaka KIMURA ,  Tomohiro TANIGUCHI ,  Sei KOU ,  Tomoya HATANO ,  Takashi YAMADA

IPC: H04W16/28 ,  H04W28/06 ,  H04W64/00

CPC classification number: H04W16/28 ,  H04W28/06 ,  H04W64/00

Abstract: An object of the present disclosure is to reduce traffic required for transmission of beacon information from a sensor apparatus to an access point and reduce power consumption without affecting position estimation processing in a high-order cloud or server.
In order to achieve the above object, an Internet of Things (IoT) communication system according to the present disclosure is the IoT communication system including one or a plurality of sensor apparatuses and an access point that performs wireless communication with the sensor apparatuses, in which the access point emits a plurality of beams to an arbitrary point, the sensor apparatus converts the beacon information acquired from the detected beams into compressed beacon information based on a beacon information correspondence table and transmits the compressed beacon information to the access point, and the access point restores the beacon information from the compressed beacon information received from the sensor apparatus based on the beacon information correspondence table.

公开(公告)号：US20230216591A1

公开(公告)日：2023-07-06

申请号：US18008523

申请日：2020-06-08

Applicant: Nippon Telegraph and Telephone Corporation

Inventor： Kota Asaka ,  Keita NISHIMOTO ,  Yukio TOYOSHIMA ,  Takashi YAMADA ,  Junichi KANI

IPC: H04B10/291 ,  H04B10/27

CPC classification number: H04B10/291 ,  H04B10/27

Abstract: One aspect of the present invention is a optical main signal processing node apparatus including: an input port for inputting an optical multiplexed with signals pertaining to a plurality of services from an optical transmission path; an output port for outputting an optical signal multiplexed with signals pertaining to a plurality of services to an optical transmission path; a optical main signal processer configured to perform optical main signal processing on an optical signal input from the input port; and a path switch configured to switch a path of the optical signal input from the input port to one of a first path for guiding the optical signal to the output port and a second path for guiding the optical signal to the optical main signal processer.

公开(公告)号：US20210266742A1

公开(公告)日：2021-08-26

申请号：US17255354

申请日：2019-06-26

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Manabu YOSHINO ,  Takashi YAMADA ,  Hiroo SUZUKI ,  Jun-ichi KANI

IPC: H04W12/06 ,  H04W12/40 ,  H04L29/06

Abstract: A service start method is a service start method executed by a communication system, and the service start method includes: a step of acquiring identification information or authentication information of a device, a customer, or a service; a step of making authentication of the device, the customer, or the service to succeed when the identification information or the authentication information has been acquired together with information that is associated with the customer or a customer's location in advance, or when the identification information or the authentication information has been acquired from a terminal or a line that is associated with the customer in advance; and a step of starting provision of the service for the device for which the authentication has succeeded.

公开(公告)号：US20200021464A1

公开(公告)日：2020-01-16

申请号：US16483680

申请日：2018-02-07

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Keita NISHIMOTO ,  Takashi YAMADA ,  Akiyuki TAKEDA ,  Toshikiyo TANAKA ,  Masashi TADOKORO ,  Takeaki MOCHIDA ,  Manabu YOSHINO

IPC: H04L12/46 ,  H04L12/841 ,  H04L12/931

Abstract: A communication apparatus includes a packet reception unit; a packet transmission unit; and a processing sequence control unit that controls a processing sequence, and the processing sequence control unit includes a packet holding unit; function instances for respective function files including groups of procedures and groups of variables; an instance information management unit that holds instance information including function instance identifiers identifying the function instances, procedure identifiers identifying the procedures belonging to the function instances, and memory addresses of the procedures; an execution sequence information management unit that holds execution sequence information that associates the function instance identifiers, the procedure identifiers, return values of the procedures, and procedures belonging to function instances that are to be executed next; and a function execution unit that, on the basis of the execution sequence information and the instance information, calls a procedure, executes a process on the communication packet, and executes the next process depending on a return value.

公开(公告)号：US20250004997A1

公开(公告)日：2025-01-02

申请号：US18710862

申请日：2021-12-06

Applicant: Nippon Telegraph and Telephone Corporation

Inventor： Sei KOU ,  Takashi YAMADA

IPC: G06F16/21

Abstract: An aspect of the present invention is a database management device including: a generation unit for generating a database; a monitoring unit for monitoring a physical quantity having a positive correlation with a usage of the database generated by the generation unit; and a management unit instructing the generation unit to generate a new database as the database to be used subsequent to the database currently in use when the physical quantity monitored by the monitoring unit exceeds a threshold value, and the generation unit reserves a region for storing the new database within a storage device and generates the new database in the reserved region when instructed to generate the new database by the management unit.

公开(公告)号：US20250150387A1

公开(公告)日：2025-05-08

申请号：US18838124

申请日：2022-02-17

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Tomoya HATANO ,  Hiroshi O ,  Takashi YAMADA ,  Hirotaka UJIKAWA ,  Yushi KOYASAKO

IPC: H04L45/302 ,  H04L45/121 ,  H04L45/42

Abstract: Provided is a communication system in which a plurality of networks each having a detour within an end-to-end distance are formed, the communication system including: a plurality of section control units that perform path control for each of sections with a network having a detour, the sections being obtained by partitioning the communication system; and an integrated control unit that controls the plurality of section control units, in which the integrated control unit includes an optimization unit that determines an optimal guaranteed delay time for each section to satisfy an end-to-end guaranteed delay time provided by a service, and a notification unit that notifies the plurality of section control units of the optimal guaranteed delay time for each section determined by the optimization unit, and the plurality of section control units each include a switching destination instruction unit that instructs a switching destination to switch to a path satisfying the optimal guaranteed delay time notified from the integrated control unit.

公开(公告)号：US20240053430A1

公开(公告)日：2024-02-15

申请号：US18271520

申请日：2021-01-22

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Shinya TAMAKI ,  Ryota SHIINA ,  Tetsuya SUZUKI ,  Yasutaka KIMURA ,  Tomohiro TANIGUCHI ,  Sei KOU ,  Tomoya HATANO ,  Takashi YAMADA

IPC: G01S5/02 ,  H04W64/00 ,  G01S5/00

CPC classification number: G01S5/0289 ,  H04W64/00 ,  G01S5/0036

Abstract: An object of the present invention is to provide a position estimation system capable of grasping position information of a plurality of wireless devices without using an external device such as a fixed beacon or a GPS, a position estimation method, a wireless device, and an analysis device. A position estimation system according to the present invention includes a plurality of wireless devices 11 and an analysis device 12, wherein the wireless devices 11 are each configured to: send beacon signals; transfer the beacon signals between the wireless devices 11 in a range that the beacon signals reach; update flags indicating transfer histories of the beacon signals at the time of transfer; and discard beacon signals sent by own wireless devices upon reception thereof. Any one of the wireless devices 11 is configured to collect the beacon signals, and the analysis device 12 analyzes the flags of the respective beacon signals collected by the wireless device 11-0, to estimate positions of the plurality of wireless devices 11.

公开(公告)号：US20230208518A1

公开(公告)日：2023-06-29

申请号：US17926705

申请日：2020-05-26

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Takeshi IMAI ,  Yushi KOYASAKO ,  Keita NISHIMOTO ,  Takashi YAMADA

IPC: H04B10/112

CPC classification number: H04B10/1127

Abstract: An optical wireless communication system (1) for wirelessly transmitting a signal beam (L) between optical communication units (2) and (3) located at two points apart from each other includes an aiming mechanism (4) that is provided in each of the optical communication units (2) and (3) located at the two points and has an aiming line (S), which is parallel to an optical axis (O) and has a predetermined interval from the optical axis (O), with the optical axis (O) of the signal beam (L) of each of the optical communication units (2) and (3) located at the two points aligned in a straight line, and a first front sight that is provided in each of the optical communication units (2) and (3) and provided at a position that is off the optical axis (O) and the aiming line (S) and has a predetermined interval from the optical axis (O) and a predetermined interval from the aiming line (S).