递归型多业务宽带GEO卫星网络跨层流量控制算法研究

Recursion Multi-service Cross-layer Flow Control Algorithm of Broadband GEO Satellite Networks

提出了一种递归型多业务跨层流量控制算法。该算法首先将多业务输入的流量控制问题抽象为具有输入端速率控制机制的缓冲区门限优化问题,建立多输入递归型SFM单节点模型MRSFM;确定了反映用户应用层QoS丢包和延时性能要求的系统代价函数,建立了用于跨层流量控制优化模型。在跨层优化模型的基础上,以建立的MRSFM模型为基础,运用IPA方法推导了代价函数相对于优化参数(缓冲区门限)的IPA导数,并利用SA理论进行优化。仿真实验验证了宽带GEO卫星网络跨层流量控制算法的正确性。

This paper introduces a recursion multi-service cross-layer flow control algorithm.Numerical simulation results show that this algorithm has good convergence and can adapt to network load environments with different flow characteristics.From a methodological sense,the algorithm extends the applications of stochastic fluid modeling and simulation method in communication network flow control problems.