Patent ID: 8018973
Filing Date: 2011-09-13
Classification: H04J,H04L

Abstract:
1. A method for measuring a distance between nodes in a packet network, the method comprising: transmitting a ping packet from a first node to a second node through one or more intermediate nodes; determining a departure time of the ping packet; changing the ping packet to a response packet; transmitting the response packet that corresponds to the ping packet from the second node to the first node through the one or more intermediate nodes; prioritizing at the one or more intermediate nodes the transmission of at least one of the ping packet and the response packet; determining a prioritized round-trip time by determining an arrival time of the response packet; determining a distance between the first node and the second node based on the prioritized round-trip time, wherein the prioritizing of the transmission for at least one of the pine packet and the response packet comprises storing other packets that are in the process of being transmitted, suspending the transmission of the other packets, and transmitting at least one of the ping packet and the response packet without delay.