公开(公告)号：US20230036110A1

公开(公告)日：2023-02-02

申请号：US17791186

申请日：2020-01-23

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Hiroya ONO ,  Satoshi NARIKAWA

IPC: H04W48/18 ,  H04W76/10 ,  H04W24/02

Abstract: An object of the present invention is to provide an optimization engine, an optimization method, and a program that have excellent extensibility, facilitate effective use of unique characteristics of each access network, and can enhance satisfaction levels of diverse users. An optimization engine according to the present invention includes an objective function of an item intended to be improved, collects parameters from access networks and terminals, and finds a combination of connection destinations that maximizes or minimizes the objective function. By appropriately configuring the objective function, it is possible to control user satisfaction levels, bandwidth utilization rates, costs for use of circuits, and the like.

公开(公告)号：US20230031163A1

公开(公告)日：2023-02-02

申请号：US17791174

申请日：2020-01-22

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Hiroya ONO ,  Satoshi NARIKAWA

IPC: H04W48/18 ,  H04W24/02 ,  H04W76/10

Abstract: An object of the present invention is to provide an optimization engine, an optimization method, and a program that have excellent extensibility, facilitate effective use of unique characteristics of each access network, and can enhance satisfaction levels of diverse users. An optimization engine according to the present invention includes an objective function of an item intended to be improved, collects parameters from access networks and terminals, and finds a combination of connection destinations that maximizes or minimizes the objective function. By appropriately configuring the objective function, it is possible to control user satisfaction levels, bandwidth utilization rates, costs for use of circuits, and the like.

公开(公告)号：US20250001036A1

公开(公告)日：2025-01-02

申请号：US18695310

申请日：2021-09-30

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Asuka MIYAKE ,  Hitoshi SISHIMO ,  Ryuji YAMAMOTO ,  Tomohiro TANIGUCHI ,  Ayako IWAKI ,  Satoshi NARIKAWA ,  Takahito KIRIHARA ,  Kazuhide NAKAJIMA ,  Takashi MATSUI ,  Yuto SAGAE ,  Chisato FUKAI ,  Nobutomo HANZAWA

IPC: A61L9/20 ,  F24F8/167 ,  F24F8/22

Abstract: An object of the present invention is to provide an air conditioner unit that can fully demonstrate the sterilization effect on air with a large flow rate, even by a method of irradiating a filter and a coil with ultraviolet light. The air conditioner unit according to the present invention includes a filter 20 through which air passes, a plurality of optical fibers 16 arranged in such a manner that one ends thereof are close to a surface of the filter 20 and arranged at predetermined intervals, and a light source 30 that supplies ultraviolet light from the other end of each of the optical fibers 16. Since the intensity of the light is inversely proportional to the square of the distance from the light source, if the same sterilization effect is to be obtained, the shorter the irradiation distance, the smaller the irradiation intensity of the ultraviolet light can be. That is, by bringing the tips of the optical fibers close to the surface of the filter, the filter can be sterilized by an LED having a small output.

公开(公告)号：US20240137309A1

公开(公告)日：2024-04-25

申请号：US18271501

申请日：2021-01-20

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Tomohiko IKEDA ,  Satoshi NARIKAWA ,  Takuya ABE

IPC: H04L45/24 ,  H04L69/14 ,  H04L69/164

CPC classification number: H04L45/24 ,  H04L69/14 ,  H04L69/164

Abstract: An object of the present disclosure is to make multipath technology applicable to UDP.
The present disclosure is a communication system in which a plurality of communication devices are connected via a plurality of networks, wherein one of the plurality of communication devices reads application data stored in a UDP payload, and stores information on a multipath option as a part of the application data, and the other one of the plurality of communication devices reads application data stored in a UDP payload, acquires information on a multipath option from the application data, and executes communication via the plurality of networks on the basis of the acquired information on the multipath option.

公开(公告)号：US20230178062A1

公开(公告)日：2023-06-08

申请号：US17925279

申请日：2020-05-21

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Satoshi NARIKAWA ,  Hiroya ONO

IPC: G10K11/178

CPC classification number: G10K11/17823 ,  G10K11/17873 ,  G10K2210/3027 ,  G10K2210/3044 ,  G10K2210/3046 ,  G10K2210/3056

Abstract: The present disclosure is a noise cancellation system including: a microphone that converts a sound wave into an electrical signal; a transmission line that propagates the electrical signal from the microphone; a speaker that reproduces a sound wave from the electrical signal from the transmission line; a phase inversion circuit that is provided between the microphone and the speaker, and inverses the phase of the electrical signal; a gain adjustment circuit that is provided between the microphone and the speaker, and adjusts a gain for amplifying the electrical signal; and a delay adjustment circuit that is provided between the microphone and the speaker, and adjusts the amount of delay of the electrical signal.

公开(公告)号：US20240388986A1

公开(公告)日：2024-11-21

申请号：US18688994

申请日：2021-09-13

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Hiroya ONO ,  Yuki SAKAUE ,  Takuya ABE ,  Satoshi NARIKAWA

IPC: H04W36/30 ,  H04W36/00 ,  H04W36/14

Abstract: An object of the present disclosure is to prevent a decrease in a window size, thereby reducing a quality degradation time due to handover processing.
The present disclosure is a communication system in which a communication terminal communicates with an arbitrary communication device according to an allocated window size, in which the communication system saves a window size before handover or a window size determined based on the window size when the communication terminal performs the handover, and determines window size after the handover based on the saved window size.

公开(公告)号：US20240335578A1

公开(公告)日：2024-10-10

申请号：US18574348

申请日：2021-07-02

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Tomohiro TANIGUCHI ,  Ayako IWAKI ,  Satoshi NARIKAWA ,  Takahito KIRIHARA ,  Kazuhide NAKAJIMA ,  Takashi MATSUI ,  Nobutomo HANZAWA ,  Yuto SAGAE ,  Chisato FUKAI ,  Hitoshi SESHIMO ,  Ryuji YAMAMOTO ,  Asuka MIYAKE

IPC: A61L2/10 ,  A61L2/24 ,  B66B1/46

CPC classification number: A61L2/10 ,  A61L2/24 ,  A61L2202/11 ,  A61L2202/14 ,  B66B1/46

Abstract: An object of the present invention is to provide an ultraviolet light irradiation system that is easy to operate and can avoid degradation of a material due to ultraviolet light. An ultraviolet light irradiation system according to the present invention includes: one ultraviolet light source unit 11 that generates ultraviolet light; an irradiation unit 13 that irradiates a desired portion (irradiation portion ste) with the ultraviolet light in a limited manner; an optical fiber 14 that propagates the ultraviolet light from the ultraviolet light source unit 11 to the irradiation unit 13; a sensing unit 16 that monitors a state of the irradiation portion ste and outputs the state as monitoring information; and an irradiation control unit 15 that controls output of the ultraviolet light from the ultraviolet light source unit 11 on the basis of the monitoring information.

公开(公告)号：US20240235987A9

公开(公告)日：2024-07-11

申请号：US18271501

申请日：2021-01-20

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Tomohiko IKEDA ,  Satoshi NARIKAWA ,  Takuya ABE

IPC: H04L45/24 ,  H04L69/14 ,  H04L69/164

CPC classification number: H04L45/24 ,  H04L69/14 ,  H04L69/164

Abstract: An object of the present disclosure is to make multipath technology applicable to UDP.
The present disclosure is a communication system in which a plurality of communication devices are connected via a plurality of networks, wherein one of the plurality of communication devices reads application data stored in a UDP payload, and stores information on a multipath option as a part of the application data, and the other one of the plurality of communication devices reads application data stored in a UDP payload, acquires information on a multipath option from the application data, and executes communication via the plurality of networks on the basis of the acquired information on the multipath option.

公开(公告)号：US20240073157A1

公开(公告)日：2024-02-29

申请号：US18270412

申请日：2021-01-04

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Hiroya ONO ,  Satoshi NARIKAWA ,  Takuya ABE ,  Yuki SAKAUE ,  Tomohiko IKEDA

IPC: H04L47/80 ,  H04L41/5003 ,  H04L41/5067

CPC classification number: H04L47/805 ,  H04L41/5003 ,  H04L41/5067

Abstract: An object of the present disclosure is to enable network control to be executable that does not deteriorate experience quality of a user even in a case where the user uses a terminal.
A communication processing device according to the present disclosure,



when detecting occurrence of network control that is different from a user controlled application, collects user information indicating a state of a user that uses a terminal, predicts an experience quality change of the user in a case of executing the network control using the user information obtained by the collection, and executes the network control on the basis of an experience quality change amount of the user obtained by the prediction.

公开(公告)号：US20220417625A1

公开(公告)日：2022-12-29

申请号：US17624206

申请日：2019-11-26

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Takuya ABE ,  Satoshi NARIKAWA ,  Tomohiko IKEDA

IPC: H04Q11/00 ,  H04L41/12 ,  H04L45/02

Abstract: An object of the present disclosure is to enable each ONU to generate a plurality of logical paths corresponding to the number of terminal devices connected to the ONU without setting a plurality of MAC addresses in each ONU.
An optical network unit according to the present disclosure includes an ID acquisition unit 26 that acquires ID information unique to a terminal device 94 from the terminal device 94; a virtual MAC address generation unit that generates a virtual MAC address for the optical network unit by using the acquired ID information; a connection identification unit that generates a logical path between the optical network unit and an optical line terminal by using the generated virtual MAC address as a MAC address for an LLID (Logical Link ID); and a signal processing unit that refers to a table in which the identification information acquired by the virtual MAC address generation unit and the LLID are associated with each other to pass, to the terminal device, data transmitted and received using the logical path generated by the connection identification unit.