Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
FREQUENCY SHIFT DETECTION METHOD AND DEVICE
Document Type and Number:
WIPO Patent Application WO/2015/043397
Kind Code:
A1
Abstract:
Provided are a frequency shift detection method and device. The frequency shift detection method of the present invention comprises: calibrating a frequency shift of a clock signal output by a local oscillator of a network element; and performing frequency shift detection on a traced reference clock signal according to the calibrated clock signal output by the local oscillator. The embodiments of the present invention solve the problem in the prior art that a detection result of a frequency shift of a reference clock signal is inaccurate due to parameter drift caused because a local oscillator has a frequency shift and ages, thereby improving detection accuracy without replacing hardware.

Inventors:
LIU, Wang (Huawei Administration Building, Bantian Longgan, Shenzhen Guangdong 9, 518129, CN)
LIU, Yongliang (Huawei Administration Building, Bantian Longgan, Shenzhen Guangdong 9, 518129, CN)
Application Number:
CN2014/086674
Publication Date:
April 02, 2015
Filing Date:
September 17, 2014
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
HUAWEI TECHNOLOGIES CO., LTD. (Huawei Administration Building, Bantian Longgan, Shenzhen Guangdong 9, 518129, CN)
International Classes:
H04L7/00; H04J3/06
Foreign References:
CN1578197A2005-02-09
CN102566410A2012-07-11
CN102833026A2012-12-19
Other References:
See also references of EP 3043493A4
None
Download PDF: