Congestion control avoiding excessive rate reduction in named data network

This paper proposes a new congestion control method based on a hop-by-hop rate control in named data networking (NDN). The proposed method suppresses the excessive reduction of Interest sending rate due to continuous negative acknowledgement (NACK) packets caused by the propagation delay. The proposed method limits the rate reduction to once per congestion. The point of our method is not to change Interest sending rate for NACK packets after the rate reduction for a congestion until the rate reduction becomes effective. Through the performance evaluation by computer simulations, we show that the proposed method improves the throughput performance compared to the conventional method.