自组网端系统中UDP流的拥塞控制

End to end congestion control of UDP stream for Ad hoc networks

从端系统控制的角度,提出了一个基于名义接收速率的拥塞控制算法(NBCC)。发送端利用接收端反馈的数据接收状态,计算名义接收速率并配合丢包率指标区分链路丢包和拥塞,进而动态控制数据发送速率。仿真结果表明,NBCC能够在网络拥塞的时候进行有效的控制,降低数据包的延时和数据流的丢包率。

From the perspective of end system control, a nominal receiving rate based on congestion control algorithm （NBCC） is proposed. Using feedback on the reception of packets from receiver, sender can calculate the nominal receiving rate and packet drop rate, distinguish the packet loss due to congestion and the loss due to link errors, and dynamically adjust its packet sending rate. Simulation results show that congestion is effectively controlled by NBCC, packet delay and drop ratio is largely reduced.