We propose a transport-layer approach to provide predictable throughput for applications requiring stable bandwidth resource, such as video streaming and VoIP. The proposed mechanism deploys an end-to-end approach: it dynamically sets the increase degree of the congestion window size of a TCP connection according to the measurement results of the available bandwidth of the network path, which is obtained by inline network measurement technique developed in our research group. In the present paper, we briefly introduce the proposed mechanism and show the performance evaluation results in the experimental network and in the commercial Internet environment. We exhibit that the proposed mechanism can achieve the required throughput with high probability without any support from intermediate network nodes.