Transmission protocol for high bandwidth-delay product networks

The poor performance of TCP, designed about 30 years ago, over high bandwidth-delay product connections has attracted much attention in the past few years. Some research work attempt to solve this problem by using innovative window estimations. The bursty nature of packet transmission has compounded the challenges in the problem. In this paper, we propose a new transmission protocol - Fairness Control Protocol (FCP) based on source rate control. The new protocol adopts a cross-layer framework which combines flow-state-dependent dynamic priority scheduling (FDPS) and active queue mechanisms. We demonstrate, via complex scenario simulations, that it achieves fair bandwidth allocation, high utilization, near-zero queue size and almost no packet loss. Furthermore, FCP´s low computation complexity makes it suitable for backbone networks with high bandwidth-delay product.