  In this paper, we propose a model for evaluating the transmission performance
of multipath transport. Previous researches focused exclusively on single pair
users in simple scenarios. The distinct perspective in this paper is to build
models for analyzing the performance when multipath transport is used in the
entire network scope. We illustrate the influences on the transmission
performance caused by the variation of network topologies, the services'
arrival rate, the services' size and other parameters. We demonstrate through
simulation that multipath transport could conditionally increase the throughput
than single-path transport. And it has the capability to support higher
services' arrival rate in various network topologies. And higher multi-parent
probability will be beneficial for multipath transport to take its advantages.
