Patent ID: 9501093
Filing Date: 2016-11-22
CPC Classification: G06F,H04J,H04L

Claim Text:
1. A method to estimate a clock skew between a source host and a destination host, the method comprising: selecting different sizes for two or more packets in a first set of compound probes such that a first packet size of a first packet of the two or more packets in the first set of compound probes is larger than a second packet size of a second packet of two or more packets in a second set of compound probes; transmitting, from the source host over a link to the destination host, the first set of compound probes that include the two or more packets; determining a first minimum intra-compound gap associated with the first set of compound probes received at the destination host; transmitting, from the destination host over the link to the source host, the second set of compound probes that include the two or more packets; determining a second minimum intra-compound gap associated with the second set of compound probes received at the source host; identifying a difference between the first minimum intra-compound gap and the second minimum intra-compound gap; and employing data filtering iterations on a sample set of measurements that are obtained at the source host and on another sample set of measurements that are obtained at the destination host so as to eliminate the difference between the first minimum intra-compound gap and the second minimum intra-compound gap, such that a smallest intra-compound gap is identified to estimate the clock skew between the source host and the destination host.