Abstract:

The space-ground integrated information network has a complex structure and diverse protocols. It is necessary to construct a corresponding emulation platform to test and verify various new technologies and solutions. In order to overcome the contradiction between emulation scale, fidelity and computational cost, the distributed emulation method combining virtualization and cloud computing is used to build a space-ground integrated broadband user emulation scenario covering space-based backbone nodes, Ka/Ku communication satellites and ground users. For the characteristics of large number of broadband users, diverse behaviors and high concurrent communicationin the network, a high-concurrency user behavior emulation method based on model-driven and parameter configurability is developed. The experiment proves that the emulation method can realize the emulation scenario of broadband users accessing the satellite network, and the diversified emulation of typical broadband user behavior based on model-driven. The emulation can supports 100,000 concurrent users, which can effectively meet the need for emulation evaluation of space-ground integrated information network.

Key words: space-ground integrated information network, virtualization, user behavior emulation, model-driven, high-concurrency

摘要：

天地一体化信息网络结构复杂、协议多样，必须构建相应的仿真平台对各种新技术、新方案进行实验、验证。为克服仿真规模、逼真性与计算开销的矛盾，采用虚拟化、云计算相结合的分布式仿真方法，搭建了涵盖天基骨干网节点、Ka/Ku通信卫星以及地面用户在内的天地一体化宽带用户仿真场景；针对网络中宽带用户数量大、行为多样、并发通信高等特点，研发了基于模型驱动、参数可配置的高并发用户行为仿真方法。实验证明，该仿真方法可实现宽带用户接入卫星网络的仿真场景，以及基于模型驱动的典型宽带用户行为的多样化仿真，且仿真规模可达10万级用户并发，可有效满足天地一体化信息网络仿真评测的需求。

关键词: 天地一体化信息网络, 虚拟化, 用户行为仿真, 模型驱动, 高并发