Abstract #301252

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JSM 2003 Abstract #301252
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 - #301252
Title: Estimation of Network Internal Delay Distributions Using a Bicast Probing Scheme
Author(s): Earl C. Lawrence*+ and George Michailidis and Vijayan N. Nair
Companies: University of Michigan and University of Michigan and University of Michigan
Address: 550 East University, Ann Arbor, MI, 48109-1092,
Keywords: network ; tomography ; bicast ; link delay
Abstract:

High-quality measurements of network dynamics, such as link delays, are increasingly important to the design and operation of large communications networks. The use of end-to-end measurements of multicast traffic--traffic destined for multiple receivers--allows the estimation of network internal characteristics. However, the number of possible outcomes in multicast schemes grows exponentially with the number of nodes. We introduce a bicast probing scheme that addresses this difficulty by collecting end-to-end packet delay information from targeted pairs of network nodes. We investigate the estimation of of internal network link delay distributions under various models including the presence of temporally dependent traffic. An efficient estimator is introduced and its asymptotic and small sample properties are established.

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