关于局部网络传输信息流实时控制仿真研究

Simulation Research on Real Time Control of Local Network Transmission Information Flow

对局部网络信息流的控制,能够有效提高网络信息的实时顺畅传输。对传输信息流的实时控制,需要设置局部网络带宽占用比参数,从而均衡各条子流上的负载,完成局部网络传输信息流的实时控制。传统方法定义不同的信息流传输满意度,获得节点提供的带宽之间的边际效应,但忽略了均衡各个负载,导致控制精度偏低。提出基于网络链路延迟的信息流传输控制方法。依据检测到的局部网络传输性能调整传输信息流码率和发送速率,同时确保信息传送速率不小于帧码率。借鉴网络链路权值的思想,在平衡网络拥塞时依据各条传输信息流的带宽占用比来均衡各条传输信息流的负载,通过设置局部网络带宽占用比参数来均衡各条子流上的负载。实验结果表明,上述方法能够避免局部网络拥塞,针对局部网络信息流传输能够有效地实现同步,控制性能优越。

To control local network information flow can effectively improve the real-time and unhindered transmission of network information. The real-time control for transmission information flow needs to set parameters of occupancy rate of local network bandwidth, so as to balance the load on each sub-flow and complete the real-time control of local network transmission information flow. The traditional method ignores to balance each load, resulting in low control accuracy. A method for transmitting and controlling information flow based on network link delay is pro- posed. According to the transmission performance of local network, the code ratio of information flow and sending rate are adjusted. At the same time, the transmission speed of information is not less than single frame rate. Drawing les- sons from the thought of network link weight, when balancing network congestion, according to the bandwidth occupation ratio of each information flow, the load of each transmitted information flow is balanced. By setting parameters of occupation ratio of local network bandwidth, the load on each sub-flow is balanced. Simulation results show that the proposed method can avoid local network congestion and effectively achieve synchronization for local network information flow transmission, which has superior performance in controls.