Signal degrade detecting method, signal restoration detecting method, devices for those methods, and traffic transmission system

A method of detecting a restoration from a signal degrade of transmission data, said method comprising:

• measuring a discarded data rate of control traffic using a processor;
• determining the signal degrade of transmission data based on the measured discarded data rate of control traffic;
• if determined that the signal degrade occurred, saving said discarded data rate corresponding to the signal degrade as a threshold value;
• and
• comparing a discarded data rate of the control traffic measured after the signal degrade is determined with said threshold value to detect a restoration from the signal degrade.

A method of detecting a restoration from a signal degrade of transmission data, said method comprising:

• measuring, using a processor, a discarded data rate of traffic, the discarded data rate calculated based on a Frame Check Sequence;
• determining the signal degrade of transmission data based on the measured data discarded data rate of traffic;
• if determined that the signal degrade occurred, saving a data error rate corresponding to the signal degrade as a threshold value;
• and
• comparing a data error rate of the traffic measured after the signal degrade is determined with said threshold value to detect a restoration from the signal degrade.

A signal degrade detecting device, comprising:

• measuring means for measuring a discarded data rate of traffic;
• threshold value output means for outputting a threshold value;
• and
• detecting means for detecting a signal degrade by comparing said discarded data rate with said threshold value,
• wherein said discarded data rate is calculated according to a Frame Check Sequence error.

A signal restoration detecting device, comprising:

• measuring means for measuring a discarded data rate of control traffic;
• first detecting means for detecting a signal degrade of transmission data based on the measured discarded data rate of control traffic;
• saving means for, if a signal degrade is detected by the first detecting means, saving said discarded data rate corresponding to the signal degrade as a threshold value;
• and
• second detecting means for detecting a restoration from the signal degrade by comparing a discarded data rate of the control traffic measured after the signal degrade is detected with the saved threshold value.

A signal restoration detecting device, comprising:

• measuring means for measuring a discarded data rate of traffic, the discarded data rate calculated according to a Frame Check Sequence;
• first detecting means for detecting a signal degrade of transmission data based on the measured discarded data rate of traffic;
• saving means for, if a signal degrade is detected by the first detecting means, saving a data error rate corresponding to the signal degrade as a threshold value;
• and
• second detecting means for detecting a restoration from the signal degrade by comparing a data error rate of traffic measured after the signal degrade is detected with said threshold value.

A signal degrade detecting device, comprising:

• measuring unit which is configured to measure a discarded data rate of traffic;
• threshold value output unit which is configured to output a threshold value;
• and
• detecting unit which is configured to detect a signal degrade by comparing said discarded data rate with said threshold value,
• wherein said discarded data rate is calculated according to a Frame Check Sequence error.

A signal restoration detecting device, comprising:

• measuring unit which is configured to measure a discarded data rate of control traffic;
• first detecting unit which is configured to detect a signal degrade of transmission data based on the measured discarded data rate of control traffic;
• saving unit which is configured to, if a signal degrade is detected by the first detecting unit, save said discarded data rate corresponding to the signal degrade of transmission data as a threshold value;
• and
• second detecting unit which is configured to detect a restoration from the signal degrade by comparing a discarded data rate of the control traffic measured after the signal degrade is detected with said threshold value.

A signal restoration detecting device, comprising:

• measuring unit which is configured to measure a discarded data rate of traffic, the discarded data rate calculated using a Frame Check Sequence;
• first detecting unit which is configured to detect a signal degrade of transmission data based on the measured discarded data rate of traffic;
• saving unit which is configured to, if a signal degrade is detected, save a data error rate corresponding to the signal degrade as a threshold value;
• and
• second detecting unit which is configured to detect a restoration from the signal degrade by comparing a data error rate of traffic measured after the signal degrade is detected with said threshold value.