Fujitsu Corporation

Hayato Furukawa

Toru Katagiri

Wataru Odashima

Yasuhiko Aoki

Masahiro Shioda

Osamu Takeuchi

Yohei Koganei

Katsuhiro Shirai

Shota Shinohara

Tetsuya Uchida

A transmission device includes: a payload generator configured to generate a payload; and an adding unit configured to add payload information on the payload to the payload, wherein the payload to which the payload information is added is transmitted via a first lane, and management information on the first lane is transmitted via a second lane.

Transmission device, transmission system, and transmission method

A transmission apparatus includes: a first mapping unit configured to allocate a first frame that stores a client signal to an intermediate frame; a second mapping unit configured to allocate the intermediate frame to a second frame that has a higher bit rate than a bit rate of the first frame; and a rate controller configured to control a bit rate of the intermediate frame based on the bit rate of the first frame and the bit rate of the second frame.

Transmission apparatus

A transmission apparatus includes: a plurality of logical lanes; a receiver configured to receive a signal including synchronization information of a frame; a distributor configured to divide data included in the received signal into frame elements and cause the plurality of logical lanes to store the data; and a transmitter configured to transmit the data stored in the logical lanes to lines corresponding to the logical lanes. When the data is stored in the plurality of logical lanes, the distributor groups the logical lanes into a plurality of groups and associates the frame elements with the synchronization information.

An optical transmission system transmits an optical signal of multi-level modulation. In a transmitter module, a data string in a specified frame is rearranged into a plurality of logical lanes. A lane ID, which specifies in what logical lane out of the plurality of logical lanes a start of the data string is arranged, is assigned to a non-scrambled area in an overhead portion of the frame. The lane ID corresponding to one of the plurality of logical lanes is different from the lane IDs corresponding to the other remaining logical lanes. The optical signal is generated using the data string rearranged into the plurality of logical lanes. In a receiver, the lane ID is detected according to a majority method. The inversion of bits and the swapping of lanes are detected using the lane ID and compensated.

Growing community of inventors

Kawasaki, Japan

Hayato Furukawa