US 9,813,174 B2
Time correction method and apparatus for slave clock device
Bin Wang, Shenzhen (CN)
Assigned to XI'AN ZHONGXING NEW SOFTWARE CO., LTD, Xi'An (CN)
Appl. No. 14/892,441
Filed by ZTE Corporation, Shenzhen (CN)
PCT Filed Apr. 18, 2014, PCT No. PCT/CN2014/075742
§ 371(c)(1), (2) Date Nov. 19, 2015,
PCT Pub. No. WO2014/187207, PCT Pub. Date Nov. 27, 2014.
Claims priority of application No. 2013 1 0189138 (CN), filed on May 20, 2013.
Prior Publication US 2016/0119070 A1, Apr. 28, 2016
Int. Cl. H04J 3/06 (2006.01)
CPC H04J 3/0667 (2013.01) 11 Claims
OG exemplary drawing
 
1. A time correction method for a slave clock device, wherein the time correction method comprises:
acquiring background traffic information, in a running process, of the slave clock device;
acquiring a asymmetric deviation correction value according to the background traffic information and a fitted function reflecting delay on an asymmetric link; and
correcting a synchronization time, which is output from the slave clock device, in real time according to the asymmetric deviation correction value;
wherein the fitted function is acquired in a manner as follows:
acquiring delay information of the asymmetric link under each background traffic template in different flow rates; and
constructing the fitted function by performing function fitting based on the delay information.