FREQUENCY SHIFT DETECTION METHOD AND DEVICE

专利名称：FREQUENCY SHIFT DETECTION METHOD

AND DEVICE

发明人：LIU, Wang,LIU, Yongliang申请号：EP14847912.4申请日：20140917公开号：EP3043493A1公开日：20160713

专利附图：

摘要：Embodiments of the present invention provide a frequency offset detectionmethod and apparatus. The frequency offset detection method in the present inventionincludes: 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 atracked reference clock signal by using the calibrated clock signal output by the localcrystal oscillator. The embodiments of the present invention solve a problem in the priorart that a detection result for a frequency offset of a reference clock signal is inaccuratebecause of an existence of a frequency offset of a local crystal oscillator and a parameterdrift caused by aging, thereby improving detection precision without replacing hardware.

申请人：Huawei Technologies Co., Ltd.

地址：Huawei Administration Building Bantian Longgang District Shenzhen,Guangdong 518129 CN

国籍：CN

代理机构：Gill Jennings & Every LLP

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