Congestion Control Algorithm Based on Loss Trend Oriented to Many-to-Many Reliable Multicast

Congestion control algorithms of existing reliable multicast protocols are mainly derived from end-to-end model, which has high resource requirements and sometimes suppresses the package sending too much. Many-to-many reliable multicast requires efficient congestion control over a one-to-many model. It's an important mechanism to use many-to-many multicast in LAN (Local Area Network) in distributed simulation. In this paper, a congestion control algorithm based on loss trend for many-to-many reliable multicast is proposed. It predicts future package loss of receivers on the analysis of historic loss and buffer variety, and then control the congestion by adjusting the sending rate in advance. This algorithm aims at the reliable multicast in LAN. The main idea of the algorithm is to lower the possibility of multicast package loss, and then the nodes can afford the cost of package recovery. It alleviates the congestion on the depression of package loss possibility by regulating the sending rate. Experiment results indicate that the algorithm can keep a high throughput of many-to-many reliable multicast with relatively real-time performance.