Promoting Node-to-Node Congestion Control in Internet

With the rapid development of the Internet, the end-to-end TCP congestion control becomes insufficient in a multiple service circumstance. Many schemes have been proposed to solve the problem from different aspects. In this paper we propose a completely different approach, the node-to-node control, as a unified solution. It avoids congestion, prevents packet loss, and manages unresponsive traffic simultaneously. Trivial overhead is consumed by using queue level congestion detection and light one-hop feedback control. No per-flow state information is maintained in routers. Response to congestion is greatly speeded up and buffer efficiency is much improved. As a network layer control scheme, it builds a scalable application-aware background congestion control architecture. We argue that it is an appropriate congestion control scheme for future Internet with multiple services.