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Internet的迅速发展使得计算机网络的资源分配成为数据通信研究领域的热点 .在Internet由单一服务质量过渡到支持多种服务质量的过程中 ,传输控制协议 (TCP)将一直是主要的端到端的资源分配方案 .本文深入分析了具有不同传输延时的TCP连接竞争资源时的公平性 .研究表明 ,TCP算法对具有较大传输延时的连接具有不公平性 .当竞争带宽的各连接的传输延时按比例减小时 ,小传输延时的连接对大传输延时的连接的抑制性相对减弱 ,这种不公平性将减弱 .结论对于TCP算法的改进具有重要意义 ,同时这种不公平性对于设计分级服务方案将有很好的应用前景 .
The rapid development of the Internet makes the resource allocation of computer network become a hot area of research in the field of data communication.Transmission control protocol (TCP) will always be the main end-to-end resource in the transition from single service quality to multi-service quality in the Internet Distribution scheme.This paper analyzes in depth the fairness of TCP connections with different transmission delays when they compete for resources.The research shows that the TCP algorithm is unfair to the connection with larger transmission delay.When the transmission bandwidth of each connection is delayed , The inequality will be weakened when the proportion of the small transmission delay is less than that of the large transmission delay.Conclusions are of great significance to the improvement of the TCP algorithm and meanwhile, Designing a hierarchical service plan will have good application prospects.