天地一体化网络高铁专网业务分析与流量建模

网络流量特性与流量模型是网络规划设计、性能评价等的基础。文章致力于天地一体化网络业务分析与流量建模研究，在完成天地一体化网络高速铁路（简称：高铁）专网业务分析的基础上，抽象高铁专网流量类型、业务传输内容、报文到达间隔、报文长度等特征，构造高铁专网仿真流量数据集，分析其流量特性。针对高铁专网流量的自相似性、突发性及周期性，采用alpha-stable自相似模型进行高铁流量建模，通过Q-Q(Quantile-Quantile)图验证模型的可信度。研究结果表明，该模型能有效刻画高铁专网的流量特性。文章的研究成果可为流量预测模型设计与仿真、网络资源合理分配等提供依据。

Business analysis and traffic modeling of high-speed railway private network of integrated ground-air-space network

Network traffic characteristics and traffic models are the basis for network planning and design and performance evaluation. This paper devoted to the research on the service analysis and traffic modeling of the integrated ground-air-space network. Based on the analysis of the high-speed railway private network service of the integrated space-to-ground network, the paper abstracted the characteristics of the high-speed rail private network such as traffic type, service transmission content, packet arrival interval, and packet length, and constructed the simulated traffic data set of high-speed railway private network and analyzed its traffic characteristics. Aiming at the self-similarity, burstiness and periodicity of the high-speed railway private network traffic, the paper used the alpha-stable self-similar model to model the high-speed rail traffic, and verified the reliability of the model by the Q-Q (Quantile- Quantile) diagram. The research results showed that the model can effectively describe the traffic characteristics of the high-speed railway private network. The research results of this paper provided an important basis for the design and simulation of traffic forecasting models and the rational allocation of network resources.