CH-TCP:改进的高速TCP算法

Improved High-Speed TCP Algorithm

传统的传输控制协议(TCP)已不能适应高速网络的发展.在被提出的高速网络拥塞控制算法中,H-TCP虽然以其良好的综合性能而备受关注,但H-TCP存在严重的RTT不公平性问题.针对H-TCP的这一缺点,提出了一种基于H-TCP的改进算法CH-TCP.CH-TCP借助VCP的思想,利用了IP数据报头的空闲字段携带RTT信息,明显提高了RTT公平性,并保留了H-TCP原有的良好性能.

The traditional Transmission Control Protocol(TCP) can not meet the high-speed network development.In the high-speed network congestion control algorithms,H-TCP is concerned with its well-integrated,but H-TCP has a serious RTT unfairness problem.For the H-TCP shortcomings,we propose CH-TCP that is an improved algorithm based on H-TCP.With VCP idea,CH-TCP takes advantage of the idle IP datagram header field to carry information on RTT,witch has markedly enhanced the RTT fairness and retains the original good performance of H-TCP.