H van den Berg
- A multiple time-scale model for TCP bandwidth sharing under user heterogeneity.
- Lecture Notes in Computer Science
- Pages (from-to)
- Document type
- Faculty of Science (FNWI)
- Korteweg-de Vries Institute for Mathematics (KdVI)
Building on the vast body of existing TCP models, we develop a novel versatile model that explicitly captures user heterogeneity, and takes into consideration dynamics at both the packet level and the flow level. It is described how the resulting multiple time-scale model can be numerically evaluated. Validation is done by using NS2 simulations as a benchmark. In extensive numerical experiments, we study the impact of heterogeneity in the round-trip times on user-level characteristics such as throughputs and flow transmission times, thus quantifying
the resulting bias. In particular, we investigate to what extent this bias is affected by the networks 'packet-level parameters', such as buffer sizes. We conclude by extending the single-link model in a straightforward way to the general network setting.
Keywords: TCP, user heterogeneity, performance, throughput, round-trip times,
packet level, flow level.
- Proceedings title: Networking Technologies, Services, and Protocols; Performance of Computer and Communication Networks; Mobile
and Wireless Communication Systems.
Editors: R. Boutaba, K. Almeroth, R. Puigjaner, S. Shen, J. Black