Patent ID: 6816510
Filing Date: 2004-11-09
Classification: H04B,H04J,H04L,H04Q

Abstract:
A method for synchronizing clocks in a packet network that includes a master node and at least one slave node, said method comprising the steps of:retrieving a first timer value at the end of transmission of a current packet from the master node to the slave node, the current packet having an identifying code; inserting the first timer value and the identifying code of the current packet into a subsequent packet to be sent to the slave node; upon receiving the current packet by the slave node, retrieving a second timer value from the slave node; associating the second timer value with the identifying code of the current packet; transmitting the subsequent packet to be sent to the slave node; comparing the identifying code in the subsequent packet with the identifying code associated with the second timer value; calculating a difference between the first and second timer values if the identifying codes match; and adjusting a clock value in the slave node in accordance with the calculated difference.