Abstract #300508

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JSM 2003 Abstract #300508
Activity Number: 329
Type: Contributed
Date/Time: Wednesday, August 6, 2003 : 8:30 AM to 10:20 AM
Sponsor: Section on Physical and Engineering Sciences
Abstract - #300508
Title: Estimating Time-Varying Packet Loss Rates Using Bicast End-to-End Measurements
Author(s): Bowei Xi*+ and George Michailidis and Vijayan N. Nair
Companies: University of Michigan and University of Michigan and University of Michigan
Address: 1678 Murfin Ave. #7, Ann Arbor, MI, 48105-3131,
Keywords: bicast measurement ; least square estimator ; network tomography
Abstract:

Monitoring network performance measures, such as packet loss rates, has become crucial for the smooth operation of present-day communications and computer networks. The burstiness that network traffic exhibits in small time scales, coupled with longer term diurnal and weekly effects, make necessary the modeling of such parameters as functions of time. We introduce a novel active probing scheme--called bicast scheme--that collects end-to-end packet loss information from targeted pairs of network nodes. We formulate a regression framework that uses these bicast measurements in order to estimate the time varying profiles of internal network link packet loss rates. The asymptotic properties of several least squares estimators are studied and their efficiency in finite samples investigated.

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