Patent ID: 8442175
Filing Date: 2013-05-14
Classification: H04J,H04L,H04M

Abstract:
1. A method for time synchronization of a digital subscriber line (DSL), the method comprising: receiving, by a first apparatus, a second symbol transmitted by a second apparatus, and obtaining time Ts transmitting, by the first apparatus, a first symbol to the second apparatus, and obtaining time Ts obtaining, by the first apparatus, time Tm calculating, by the first apparatus, an offset between a clock of the first apparatus and a clock of the second apparatus according to the times Ts adjusting, by the first apparatus, the clock of the first apparatus with the offset to synchronize with the clock of the second apparatus; and obtaining a phase difference between a receiving point phase and a check point phase, wherein the receiving point is a position where a signal of the second symbol is received by the first apparatus and the check point is a position where the same signal of the second symbol is transmitted by the second apparatus.