ASSOLO: An Efficient Tool for Active End-to-End Available Bandwidth Estimation

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Executive Summary

End-to-end available bandwidth estimation is a crucial metric for bandwidth-dependent services such as multimedia streaming, peer-to-peer and gaming applications; it is also useful for quality of service verification and traffic engineering. This paper presents the details of ASSOLO, an efficient active probing tool for estimating the available bandwidth of a network path. The tool is based on the well-known concept of "Self-induced congestion", and it features a new probing traffic profile called REACH (Reflected ExponentiAl CHirp) to test a wide range of possible rates with a single stream of packets. In addition, the program runs inside a real-time operating system and uses some de-noising techniques to improve the measurement process.

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