Patent ID: 7274714
Filing Date: 2007-09-25
Classification: H04L

Abstract:
1. A method comprising: transmitting a set of packets from the first network element through the packet network to the second network element; receiving at least part of the transmitted packets at the second network element; transmitting the received packets from the second network element through the packet network back to the first network element in response to the receiving of the packets at the second network element, wherein the method further comprises: transmitting each one of said transmitted packets arrived at the second network element in a return transmission back to the first network element only after a delay from the receiving of the packet at the second network element; storing in each one of said transmitted packets from the first network element, in connection with the transmitting of the packet, a first time information and a first sequence number data; storing in each one of said received packets at the second network element, in connection with the receiving of the packet, a second time information and a second sequence number data; further storing at the second network element in each of said received packets to be returned to the first network element, in connection with the return transmission of the packet, a third time information; storing at the first network element in each of said packets returned to the first network element, in connection with the receiving of the returned packets, a fourth time information; and determining on the basis of said time information and sequence number data values for a set of parameters describing quality of service for determining the quality of service.