Patent ID: 7525923
Filing Date: 2009-04-28
Classification: H04L,H04W

Abstract:
1. A method of estimating end-to-end path capacity in a network, comprising: probing an end-to-end path to identify addresses of all hops on the end-to-end path; generating a pair of time-stamp request packets, wherein the pair of time-stamp request packets comprise a first time-stamp request packet and a second time-stamp request packet; transmitting said pair of time-stamp request packets to a first hop on the end-to-end path, wherein no interfering traffic is received between the first and second time-stamp request packets at the first hop; transmitting the second time-stamp request packet to a second hop on the end-to-end path from the first hop on the end-to-end path; generating a first time-stamp in response to said first time-stamp request packet with said first hop; generating a second time-stamp in response to the second time-stamp request packet with said second hop; and processing said first time-stamp and said second time-stamp of the pair of time-stamp request packets to produce at least one Quality of Service (QoS) estimate.