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Network throughput of the best-effort networks as typified by the Internet and wireless networks is often insufficient for multimedia communication, and it spoils the quality of communication. Therefore, it is important to analyze dynamic characteristics of the throughput when multimedia traffic is injected. The authors point out that the dynamics of the throughput has the viscosity and the elasticity because of an interaction among traffic passing through the network. They also introduce a viscoelastic material model to analyze the throughput. A total of 120 simulations were performed with an ns-2 simulation model. The results of simulations showed that the dynamics of the throughput does indeed have the viscoelasticity.
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