FREQUENCY OFFSET DETECTION METHOD AND APPARATUS

摘要

Embodiments of the present invention provide a frequency offset detection method and apparatus. The frequency offset detection method in the present invention includes: calibrating a frequency offset of a clock signal output by a local crystal oscillator of a network element device, and performing frequency offset detection on a tracked reference clock signal by using the calibrated clock signal output by the local crystal oscillator. The embodiments of the present invention solve a problem in the prior art that a detection result for a frequency offset of a reference clock signal is inaccurate because of an existence of a frequency offset of a local crystal oscillator and a parameter drift caused by aging, thereby improving detection precision without replacing hardware.

主权项

1. A frequency offset detection method, comprising:
calibrating a frequency offset of a clock signal output by a local crystal oscillator of a network element device; and performing frequency offset detection on a tracked reference clock signal by using the calibrated clock signal output by the local crystal oscillator.