Patent ID: 9537607
Date: 2017-01-03
CPC Classifications: H04B,H04J,H04L

Claim:
1. A node for a communication network, the node having: a converter for digitizing at a receiver clock rate a received optical signal received over an optical link from an optical transmitter at another node to yield digital data; a framer for detecting frames in the digital data, the frames each having a payload part and a forward error correction part; an error corrector for correcting errors in the payload part of those frames including errors using the forward error correction part of those frames; a monitor for monitoring an error rate in the received payload parts; and a processor arranged to cause, when the monitored error rate is determined to be less than a threshold, a request to be sent to the optical transmitter to reduce a length of the transmitted forward error correction part in subsequent frames and also to decrease a clock rate of the transmission of the subsequent frames by an amount selected based upon the reduced length of the forward error correction part to maintain a same payload transmission rate.