CoMPACT-Monitor: change-of-measure based passive/active monitoring weighted active sampling scheme to infer QoS

The paper proposes a novel performance measurement scheme for the Internet which can infer performance and/or quality experienced by individual user, organization and application, via a scalable and lightweight measurement technique. The proposed scheme is based on a change-of-measure framework and is an active measurement transformed by using passively monitored data. We give the theoretical basis of the proposed scheme and show its typical implementations for inferring the delay distributions. The validation of the implementations of the proposed scheme is investigated through simulation with respect to both the accuracy of estimation and the amount of extra traffic added by active measurement.