Inferring Delay Variations using Packet-pair probing techniques for Network measurement

IP networks are destined to become the ubiquitous global communication infrastructure. With the introduction of Service Level Agreements(SLAs), the importance of being able to accurately know and manipulate traffic behaviour in a network has increased. Inferring the delay distributions is of great importance for various network applications. In this paper, we adopt an active measurement technique which can infer delay variations by injecting back-to-back packet doubles or packet-pairs as probes instead of single packets across the end-to-end network. By this we exploit the ‘dispersive’ nature of packet-pairs to measure this performance metric. The modelling technique provides a commanding solution to address the problem of QoS estimation. Thus, the use of probe-packet stream ensures that the measurements derived are not pseudoestimates of the original dimensions. Finally, we validate our scheme by performing network simulations.