Transmission device, transmission system, and transmission method
US-2020067624-A1 · Feb 27, 2020 · US
Optical transmission system and transmission mode selecting method
US12457040B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12457040-B2 |
| Application number | US-202218086314-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 21, 2022 |
| Priority date | Aug 7, 2018 |
| Publication date | Oct 28, 2025 |
| Grant date | Oct 28, 2025 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
An optical transmission system including an optical transmission device and an optical reception device that receives, via an optical transmission line, a signal transmitted from the optical transmission device, the optical transmission system including a transmission-mode selection unit that selects transmission mode information in descending order of priority out of transmission mode information, which is combinations of a plurality of parameters concerning transmission performance, the transmission mode information being a plurality of kinds of the transmission mode information common to the transmission performance of the optical transmission device and the optical reception device, a signal transmission unit that transmits, to the optical reception device, a signal modulated based on the selected transmission mode information, and a signal reception unit that receives the signal and modulates the received signal based on the transmission mode information selected by the transmission-mode selection unit.
First claim
Opening claim text (preview).
The invention claimed is: 1 . A transceiver comprising: a transmission-mode-candidate transmitter configured to transmit to transmission apparatus to be communicated with transmission mode candidate information including transmission mode information which is a combination of a plurality of parameters related to transmission performance of the transceiver; a transmission-mode-candidate receiver configured to receive transmission mode candidate information including transmission mode information which is a combination of a plurality of parameters related to transmission performance of the transmission apparatus to be communicated with; a transmission-mode selector configured to select transmission mode information in descending order of priority out of transmission mode information common to the transmission mode candidate information of the transceiver and the transmission mode candidate information of the transmission apparatus to be communicated with; a signal transmitter configured to transmit, to the transmission apparatus to be communicated with, a signal modulated based on the selected transmission mode information; a signal receiver configured to receive signal light transmitted from the transmission apparatus to be communicated with and demodulate the received signal light based on the transmission mode information selected by the transmission-mode selector; a signal-quality detector configured to detect signal quality of the received signal light received by the signal receiver; and a signal-quality determiner configured to determine based on information indicating the signal quality detected by the signal-quality detector, whether the signal quality of the received signal light is permissible; wherein the when the signal-quality determiner determines that the signal quality of the signal is non-permissible, the transmission-mode selector is configured to select the transmission mode information having second highest priority. 2 . The transceiver according to claim 1 , wherein the transmission mode candidate information is superimposed on a pilot tone signal which is a signal sequence in which electric power concentrates on one or more specific frequencies, and is transmitted and received.
Assignees
Inventors
Classifications
Polarisation multiplex systems · CPC title
- H04B10/0779Primary
Monitoring line transmitter or line receiver equipment · CPC title
in wireless communication networks · CPC title
Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems · CPC title
Phase-modulated carrier systems, i.e. using phase-shift keying (H04L27/32 takes precedence) · CPC title
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Frequently asked questions
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- What does patent US12457040B2 cover?
- An optical transmission system including an optical transmission device and an optical reception device that receives, via an optical transmission line, a signal transmitted from the optical transmission device, the optical transmission system including a transmission-mode selection unit that selects transmission mode information in descending order of priority out of transmission mode informat…
- Who is the assignee on this patent?
- Ntt Inc
- What technology area does this patent fall under?
- Primary CPC classification H04B10/0779. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Oct 28 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 12 related publications on this page (citations in our corpus or others sharing the same primary CPC).