Patent ID: 8724503
Filing Date: 2014-05-13
Classification: H04L

Abstract:
1. A method for estimating the available bandwidth of sub-paths of a data path between a start node (R 0 ) and an end node (R N ) in a communications network, said data path comprising a number of links connecting said start node with the end node via a number of intermediate nodes (R 1 , . . . , R N-1 ), each node constituting a hop and each link having an available bandwidth during operation of said network, the method comprising: Generating and transmitting a probe train towards the end node, said probe train generated with a specific size (s) and an Initial (IPSsent) inter-packet separation comprising outer and Inner data packets, said outer data packets enclosing the inner data packets, by Determining the sent probe train's received Inter-packet separation (IPSreceived); and Calculating an estimate for available bandwidth (B) for the TTL_inner value, said estimate calculated based on the initial train size and a difference between the initial (IPSsent) and the received (IPS received) inter-packet separations.