基于伽马分布和小波变换的天地一体化网络流量模型

he research of the space-ground integrated information network traffic model becomes more complex because of the dynamic change of network topology and the coexistence of multiple network types and service types.In this paper, a heterogeneous, multi-dimensional and multi-state simulation scene of the space-ground integrated information network is built to obtain the network traffic data. Then, the network traffic model based on gamma distribution and wavelet transform is introduced. The obtained traffic data is transformed by discrete wavelet, and the wavelet coefficients and scale coefficients are modulated by gamma distribution.Finally, the model is evaluated from the aspects of self similarity and accuracy. The simulation results show that the self similarity error of the network traffic model based on gamma distribution and wavelet transform is 2.6%, and the cumulative probability distribution error is 4.5%. Compared with the traditional traffic model, this model is more suitable for the complex heterogeneous network with the integration of space and ground.