一种基于带宽估计的MANET网络拥塞避免机制

Congestion Avoidance Mechanism Based on Bandwidth Estimation in MANET Networks

针对MANET网络提出了一种基于带宽估计的拥塞避免机制。该机制通过实时地监测无线节点链路的工作状态,来估计节点的可用带宽,从而获得节点的拥塞程度指标,根据包的类型进行拥塞控制。带宽估计不需要与其他节点进行状态信息交换,降低了系统开销。拥塞避免机制缓解了无线网络的拥塞状态,提高了网络性能。

A congestion avoidance mechanism based on bandwidth estimation in MANET networks is proposed. In order to get the metric of congestion degree, the available bandwidth is estimated through the work status of wireless link that is monitored by the node continuously. The congestion control mechanism is implemented according to packet type. The bandwidth estimation needn＇t exchange information with other nodes, so the overload of system is low. The results of simulation show that the mechanism has better performance.