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US 9,071,348 B2Granted
Optical transmission apparatus and optical transmission method
AssigneeFujitsu Limited
InventorJun Matsui
Life of this patent
Estimating the term…
Abstract
An optical transmission apparatus includes a transmitter that transmits to a counterpart receiver via a transmission path and transmits as optical signals for a plurality of channels, input signals for a plurality of channels; and a controller that when a transmission failure between the transmitter and the receiver is detected, distributes to properly operating channels, data for a channel subject to the transmission failure, increases a transmission rate for the properly operating channels to a given transmission rate, and continues data transmission for all channels including the channel subject to the transmission failure.
Claims18
An optical transmission apparatus comprising:
- a transmitter that transmits to a counterpart receiver via a transmission path and transmits as optical signals for a plurality of channels, input signals for a plurality of channels;
- and
- a controller that when a transmission failure between the transmitter and the receiver is detected, distributes to properly operating channels, data for a channel subject to the transmission failure, increases a transmission rate for the properly operating channels to a given transmission rate, and continues data transmission for all channels including the channel subject to the transmission failure, wherein
- the transmitter includes:
- a data buffer provided for each channel;
- a switching element that switches routes of data output from the data buffer;
- and
- an electro/optical converting element that converts data for a switched route, from electronic data to optical data,
- the data buffer appends a first channel identifier and a second channel identifier to the data for all channels, the first channel identifier indicating a channel to which data for the channel subject to the transmission failure is to be distributed and the second channel identifier indicating to which channel distributed data originally belongs, and
- the switching element switches the routes of the data based on the first channel identifier;
- and
- the transmitter divides the data for the channel subject to the transmission failure into given data units and transmits each of the data units, using vacant time slots of the properly operating channels, not occupied by data to be transmitted.
9 more elements
An optical transmission apparatus comprising:
- a receiver that receives from a counterpart transmitter via a transmission path, optical signals for a plurality of channels;
- and
- a controller that when a transmission failure between the transmitter and the receiver is detected, extracts from a properly operating channel, data for a channel subject to the transmission failure, increases a transmission rate of the properly operating channel to a given transmission rate, and continues data transmission for all channels including the channel subject to the transmission failure, wherein
- the data for all channels is appended a first channel identifier and a second channel identifier, the first channel identifier indicating a channel to which data for the channel subject to the transmission failure is to be distributed and the second channel identifier indicating to which channel distributed data originally belongs, and
- the data for the channel subject to the transmission failure is divided into given data units and each of the data units are transmitted, using vacant time slots of the properly operating channels, not occupied by data to be transmitted.
2 more elements
An optical transmission method comprising:
- transmitting from a transmitter to a counterpart receiver via a transmission path and as optical signals for a plurality of channels, input signals for a plurality of channels;
- and
- distributing when a transmission failure between the transmitter and the receiver is detected and distributing to a properly operating channel, data for a channel subject to the transmission failure at the transmitter, increasing a transmission rate for the properly operating channel to a given transmission rate, and causing a controller to continue data transmission for all channels including the channel subject to the transmission failure, wherein
- the data for all channels is appended a first channel identifier and a second channel identifier, the first channel identifier indicating a channel to which data for the channel subject to the transmission failure is to be distributed and the second channel identifier indicating to which channel distributed data originally belongs, and
- the data for the channel subject to the transmission failure is divided into given data units and each of the data units are transmitted, using vacant time slots of the properly operating channels, not occupied by data to be transmitted.
2 more elements
An optical transmission method comprising:
- causing a receiver to receive optical signals that are for a plurality of channels and transmitted from a counterpart transmitter via a transmission path;
- and
- extracting from a properly operating channel, data for a channel subject to a transmission failure, increasing a transmission rate of the properly operating channel to a given transmission rate, and causing a controller to continue data transmission for all channels including the channel subject to the transmission failure, when the transmission failure between the counterpart transmitter and the receiver is detected, wherein
- the data for all channels is appended a first channel identifier and a second channel identifier, the first channel identifier indicating a channel to which data for the channel subject to the transmission failure is to be distributed and the second channel identifier indicating to which channel distributed data originally belongs, and
- the data for the channel subject to the transmission failure is divided into given data units and each of the data units are transmitted, using vacant time slots of the properly operating channels, not occupied by data to be transmitted.
2 more elements
Dependencies are inferred from the claim text.