公开(公告)号：US20240129033A1

公开(公告)日：2024-04-18

申请号：US18276563

申请日：2021-02-26

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Satoshi NARIKAWA ,  Toshihito FUJIWARA ,  Hiroya ONO

IPC: H04B10/29 ,  G01S5/18 ,  H04B10/40

CPC classification number: H04B10/29 ,  G01S5/18 ,  H04B10/40

Abstract: An object of the present invention is to provide a communication method, a transceiver, a relay, a communication system, and a program capable of performing high-speed communication even in a case where there is an obstacle between two separated points in water.
In this communication method, two points each confirm the other's position by using sound wave communication which is likely to be diffracted as a wave due to a relatively small frequency and a large wavelength. Since the communication method uses optical wireless communication in which straightness is high but high-speed communication is possible, a relay capable of forming a path for communication while avoiding an obstacle is selected from a plurality of relays. In this communication method, signals are transmitted and received by using optical wireless communication using a relay on the path.

公开(公告)号：US20240121005A1

公开(公告)日：2024-04-11

申请号：US18276249

申请日：2021-02-26

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Satoshi NARIKAWA ,  Toshihito FUJIWARA ,  Hiroya ONO

IPC: H04B10/29 ,  H04B10/40

CPC classification number: H04B10/29 ,  H04B10/40

Abstract: An object of the present invention is to provide a communication method, a transceiver, a relay, a communication system, and a program capable of performing high-speed communication even in a case where there is an obstacle between two separated points in water.
In this communication method, two points each confirm the other's position by using sound wave communication which is likely to be diffracted as a wave due to a relatively small frequency and a large wavelength. Since the communication method uses optical wireless communication in which straightness is high but high-speed communication is possible, a path for communication while avoiding an obstacle via a relay is calculated. In the communication method, the relay is guided and moved to an appropriate place according to the calculated path, and a signal is transmitted and received by using optical wireless communication using the relay that has moved to an appropriate place.

公开(公告)号：US20230396605A1

公开(公告)日：2023-12-07

申请号：US18032770

申请日：2020-10-28

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Toshihito FUJIWARA ,  Tatsuya FUKUI ,  Tomohiro TANIGUCHI ,  Tomohiko IKEDA ,  Hiroya ONO ,  Ryota SHIINA

IPC: H04L9/40

CPC classification number: H04L63/083

Abstract: An object of the present invention is to provide a network authentication system and a network authentication method capable of highly securely authenticating connection or a use place of a device without depending on a connection interface system in a mode in which a device such as audio/video equipment is directly connected to a public network. A network authentication system according to the present invention generates authentication information by a device other than a device such as audio/video equipment, and transmits the authentication information to the device as a media signal.

公开(公告)号：US20230140859A1

公开(公告)日：2023-05-11

申请号：US17920505

申请日：2020-04-27

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Toshihito FUJIWARA ,  Tomohiro TANIGUCHI ,  Hiroya ONO

IPC: H04N21/266 ,  H04N21/6405 ,  H04N21/222

CPC classification number: H04N21/26616 ,  H04N21/6405 ,  H04N21/222

Abstract: An object of the present disclosure is to distribute content with a high quality and low latency without being limited by a low-rate and unstable network and a low-capacity reception-side edge servers while maintaining sufficient traffic reduction effects.
A content distribution system according to the present disclosure converts part of communication for distribution into multicast communication. In the content distribution system, a transmission-side edge server (UC/MC) generates and transmits a plurality of multicast streams having different transfer rates for the same input content, and a reception-side edge server (MC/UC) selects and receives a multicast stream having a desired transfer rate among the plurality of transmitted multicast streams.

公开(公告)号：US20220286952A1

公开(公告)日：2022-09-08

申请号：US17632055

申请日：2020-01-22

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Hiroya ONO ,  Satoshi NARIKAWA

IPC: H04W48/18 ,  H04W40/12 ,  H04W28/02 ,  H04W28/08

Abstract: An object of the present invention is to provide an optimization engine, an optimization method, and a program that are excellent in extendibility, make it easy to effectively use unique features of respective access networks, and can improve the degree of satisfaction of various users. An optimization engine according to the present invention includes an objective function of an item to be improved, collects parameters from access networks and terminals, and finds a combination of connection destinations that maximize or minimize the objective function. By appropriately setting the objective function, it is possible to control the degree of user satisfaction, bandwidth usage ratio, line usage cost, or the like.