Asymmetric fiber link transmission delay measuring method
The invention relates to the technical field of optical fiber communication and time frequency synchronization, and especially relates to an asymmetric fiber link transmission delay measuring method. Lengths of uplink and downlink fibers between a master station device and a slave station device are...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The invention relates to the technical field of optical fiber communication and time frequency synchronization, and especially relates to an asymmetric fiber link transmission delay measuring method. Lengths of uplink and downlink fibers between a master station device and a slave station device are measured by sending light signals in different wavelengths in the uplink and downlink fibers between the master station device and the slave station device; then, time deviation between the master station device and the slave station device is calculated; and the time deviation is corrected and compensated, so that time synchronization between the master station device and the slave station device is realized. The invention provides a new measuring method for the problem that an asymmetric fiber link has transmission delay difference. Through a correction factor method, measurement accuracy of the asymmetric fiber link transmission delay is improved; and IEEE 1588 time synchronization technology is allowed to be a |
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