面向无线网络的数据传输自适应拥塞控制

Adaptive congestion control for data transmission in wireless network

为提高无线网络数据传输的数据传输效率,提出面向无线网络的数据传输自适应拥塞控制方法。基于拥塞控制阶段的转换关系,自适应调节无线网络数据传输窗口大小,实现拥塞控制过程中数据传输流量的控制;构建无线网络的拓扑结构,以传输时延为约束,通过数据传输速率确定节点流量积压阈值,确定节点拥塞程度;预估无线网络数据传输各路径的拥塞程度,选定传输速率最高的路径作为最优数据传输路径。实验结果表明,文中方法应用后,可以将无线网络数据传输的吞吐率提高85%,节点死亡率控制在20%以下,并提高了120%的拥塞控制公平性。

In order to improve the data transmission efficiency of wireless network data transmission,an adaptive congestion control method for wireless network data transmission is proposed.Based on the conversion relationship in the congestion control stage,the data transmission window size of wireless network is adaptively adjusted to realize the control of data transmission flow in the process of congestion control.Constructing the topology of wireless network,taking the transmission delay as the constraint,determining the threshold of node traffic backlog through the data transmission rate,and determining the degree of node congestion;Estimate the congestion degree of each path of wireless network data transmission,and select the path with the highest transmission rate as the optimal data transmission path.The experimental results show that after the application of the proposed method,the throughput of wireless network data transmission can be increased by 85%,the node mortality can be controlled below 20%,and the fairness of congestion control can be improved by 120%.