公开(公告)号：US12143157B2

公开(公告)日：2024-11-12

申请号：US18016704

申请日：2020-07-29

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Ryo Igarashi ,  Masamichi Fujiwara ,  Takuya Kanai

IPC: H04B10/272 ,  H04B10/278 ,  H04B10/61

Abstract: A branch ratio setting system includes: a branch ratio control unit; and a plurality of drop units configured to be able to receive an optical signal from the branch ratio control unit, and configured to branch and output the received optical signal, and the branch ratio control unit outputs light to the plurality of drop units via an optical fiber to measure characteristics of the optical fiber, and outputs a branch ratio determination signal to each of the plurality of drop units via the optical fiber based on the measured characteristics of the optical fiber, and the drop unit includes an optical splitter connected to the optical fiber and having a variable branch ratio and a branch ratio setting unit that sets the branch ratio of the optical splitter based on the branch ratio determination signal input via the optical fiber.

公开(公告)号：US12119876B2

公开(公告)日：2024-10-15

申请号：US17568970

申请日：2022-01-05

Applicant: Mitsubishi Electric Corporation

Inventor： Kenichi Nakura ,  Takeshi Suehiro ,  Akiko Iwasaki ,  Jun Mizuguchi

IPC: H04B10/27 ,  H04B10/272 ,  H04Q11/00

CPC classification number: H04B10/27 ,  H04B10/272 ,  H04Q11/0062 ,  H04Q2011/0064 ,  H04Q11/0067

Abstract: A network control device for generating a slice by dividing a network and allocating communication resources to the slice, the slice being a virtual network, the network control device including: a processor; and a memory to store a program which, when executed by the processor, performs processes of: obtaining and holding resource information from a network device included in the network, the resource information including information on a maximum usage rate of communication resources allocated to a previously generated slice in at least one predetermined period; and determining, upon receiving a request for generating a new slice, whether or not the requested slice can be generated on the basis of the resource information held, wherein the resource information includes information on a maximum usage rate of communication resources, which are allocated to the previously generated slice, depending on a request delay concerning the slice in the predetermined period.

公开(公告)号：US20240284080A1

公开(公告)日：2024-08-22

申请号：US18571527

申请日：2022-06-30

Applicant: FRANCOIS MENARD ,  MARTIN BERARD ,  PIERRE POTTIER ,  DAMIEN MICHEL ,  JUSTIN ALEXANDER ,  SEBASTIEN GRAVEL

Inventor： FRANCOIS MENARD ,  MARTIN BERARD ,  PIERRE POTTIER ,  DAMIEN MICHEL ,  JUSTIN ALEXANDER ,  SEBASTIEN GRAVEL

IPC: H04Q11/00 ,  H04B10/272

CPC classification number: H04Q11/0005 ,  H04B10/272 ,  H04Q2011/0039 ,  H04Q2011/005

Abstract: Silicon photonics adds optical functionality to electronic integrated circuits allowing leveraging CMOS fabrication processes, integration of CMOS electronics discretely and integration of microelectromechanical systems (MEMS) or Micro-Opto-Electro-Mechanical-Systems (MOEMS) elements. Further, silicon photonics allows hybrid or monolithic integration of semiconductor photodetectors for optical receivers in conjunction with the passive silicon photonics and active elements such as semiconductor optical amplifiers (SOAs) and laser diodes (LDs) for coherent detection receivers for next generation systems. Accordingly, it would be beneficial to provide network designers with silicon photonic receivers for wavelength division multiplexed networks using direct or coherent detection which can dynamically select one or more channels from a large number of incoming channels whilst addressing the inherent issues that silicon photonics and other optical waveguide technologies exhibit such as polarisation dependency.

公开(公告)号：US20230291484A1

公开(公告)日：2023-09-14

申请号：US18016704

申请日：2020-07-29

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Ryo IGARASHI ,  Masamichi FUJIWARA ,  Takuya KANAI

IPC: H04B10/61 ,  H04B10/272

CPC classification number: H04B10/614 ,  H04B10/272

Abstract: A branch ratio setting system includes: a branch ratio control unit; and a plurality of drop units configured to be able to receive an optical signal from the branch ratio control unit, and configured to branch and output the received optical signal, and the branch ratio control unit outputs light to the plurality of drop units via an optical fiber to measure characteristics of the optical fiber, and outputs a branch ratio determination signal to each of the plurality of drop units via the optical fiber based on the measured characteristics of the optical fiber, and the drop unit includes an optical splitter connected to the optical fiber and having a variable branch ratio and a branch ratio setting unit that sets the branch ratio of the optical splitter based on the branch ratio determination signal input via the optical fiber.

公开(公告)号：US20230155712A1

公开(公告)日：2023-05-18

申请号：US17908223

申请日：2020-03-02

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Rintaro HARADA ,  Hirotaka UJIKAWA ,  Shin KANEKO ,  Jun TERADA

IPC: H04J14/02 ,  H04B10/272

CPC classification number: H04J14/0206 ,  H04B10/272 ,  H04J14/0213

Abstract: A wavelength multiplexing communication system includes a master station apparatus and a plurality of slave station apparatuses. The master station apparatus includes a wavelength multiplexing communication unit that performs wavelength multiplexing communication with the plurality of slave station apparatuses by wavelengths the number of which is equal to or less than the number of the plurality of slave station apparatuses using an optical signal of a wavelength in a first wavelength group and an optical signal of a wavelength in a second wavelength group. The slave station apparatuses include an optical communication unit that performs communication of the main signal with the master station apparatus by an optical signal of a wavelength in the first wavelength group, which is different from a wavelength in the first wavelength group used by another slave station when the main signal communication is performed in the host slave station apparatus, and performs communication of a signal other than the main signal with the master station apparatus by an optical signal of a wavelength in the second wavelength group, which is a wavelength same as a wavelength used by another slave station apparatus when the main signal communication is not performed in the host slave station apparatus.

公开(公告)号：US20230144582A1

公开(公告)日：2023-05-11

申请号：US17909632

申请日：2021-02-01

Applicant: ZTE CORPORATION

Inventor： Jiangyan HE ,  Weiliang ZHANG ,  Liquan YUAN

IPC: H04B10/272

CPC classification number: H04B10/272

Abstract: Provided is a method for registering an optical network unit. The method is used for an optical line terminal. The method for registering an optical network unit comprises: according to pre-acquired registration information of an optical network unit to be registered, issuing registration configuration information, so as to complete registration of said optical network unit, wherein the registration information of said optical network unit is acquired before the present registration starts. Further provided are a method for writing registration information, an optical line terminal, an optical network unit, a front-facing optical network unit, and a registration device.

公开(公告)号：US11563490B2

公开(公告)日：2023-01-24

申请号：US17135685

申请日：2020-12-28

Applicant: SONY CORPORATION

Inventor： Ikuo Tsukagoshi

IPC: H04N21/236 ,  H04N21/25 ,  H04B10/25 ,  H04N5/225 ,  H04N5/20 ,  H04N21/235 ,  H04N21/435 ,  H01S5/02251 ,  G02B6/42 ,  H04B10/272

Abstract: Both a conventional receiver and an HDR-compatible receiver well perform electro-optical conversion processing on transmission video data obtained by using an HDR opto-electronic transfer characteristic. High dynamic range opto-electronic conversion is performed on high dynamic range video data to obtain the transmission video data. Encoding processing is performed on this transmission video data to obtain a video stream. A container of a predetermined format including this video stream is transmitted. Metadata information indicating a standard dynamic range opto-electronic transfer characteristic is inserted into a layer of the video stream, and metadata information indicating a high dynamic range opto-electronic transfer characteristic is inserted into at least one of the layer of the video stream and a layer of the container.

公开(公告)号：US20220329321A1

公开(公告)日：2022-10-13

申请号：US17638831

申请日：2019-09-02

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Manabu YOSHINO

IPC: H04B10/272 ,  H04L12/46 ,  H04L12/44 ,  H04Q11/00

Abstract: A communication device includes: a first transmission-reception unit connected with a first optical line terminal; a second transmission-reception unit connected with a second optical line terminal; and a control unit, the first transmission-reception unit acquires a control signal having a destination at the second or third optical line terminal from the first optical line terminal, the control unit forwards the control signal toward the second transmission-reception unit connected with the second or third optical line terminal, and the second transmission-reception unit forwards the control signal to the second or third optical line terminal.

公开(公告)号：US11412316B2

公开(公告)日：2022-08-09

申请号：US15734192

申请日：2019-06-06

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Keita Nishimoto ,  Takashi Mitsui ,  Tomoya Hatano

IPC: H04B10/27 ,  H04Q11/00 ,  H04B10/272 ,  H04L12/44 ,  H04L43/0888 ,  H04L43/0894 ,  H04L47/70

Abstract: An optical line terminal is provided with: an absorption unit that acquires first information of a type and a format that are dependent on a communication scheme and that converts the acquired first information into second information of a type and a format that are common to mutually different communication schemes; and a bandwidth allocation unit that determines bandwidth allocation of an upstream signal allocated to an optical network unit on the basis of the second information.

公开(公告)号：US20220216916A1

公开(公告)日：2022-07-07

申请号：US17144123

申请日：2021-01-07

Applicant: VTrum Group LLC

Inventor： Julianne Compann

IPC: H04B10/077 ,  H04B10/272 ,  H04Q11/00

Abstract: A fiber diagnostics system facilitates testing, troubleshooting, tracking, identifying and logging information pertaining to fiber optic networks and their associated elements, including aggregated upstream and downstream statistics and trouble identification for all ports and services on the PON (Passive Optical Network), including Optical Line Networks and Optical Network Terminals (OLNs and ONTs). Traffic and network activities may be viewed as a whole or may be isolated to focus on specific networks, segments, WANs or LANs and individual client locations and devices, including devices residing on the customer premises beyond the point of demarcation.