3GPP组织发布的卫星移动通信标准还停留在3G阶段。对卫星LTE系列标准的研究，如通信协议和流程，常使用网络仿真方式。对EPS系统、开源网络仿真工具NS一3中的LTE仿真模型LENA给出了简要介绍，重点讨论了LENA模型与真实LTE系统的差异，并针对卫星移动通信环境存在大时延、高误码、信道衰落有别于地面等特点，分析和总结了利用LENA模型进行星上LTE系统仿真需要完善之处，为研究和制定卫星I肛移动通信系统标准打下了基础。(The standard of satellite mobile communication released by 3GPP is still in the 3G stage. Research on satellite LTE series standards, such as communication protocols and flows
It often uses network simulation. The LTE simulation model LENA in the EPS system and the open source network simulation tool NS 3 is briefly introduced. The difference between the LENA model and the real LTE system is emphatically discussed. In view of the characteristics of the satellite mobile communication environment, such as large delay, high error code, and the fading of the channel are different from the ground, the LENA model is analyzed and summarized for the on-board LT. E system simulation needs improvement, which lays the foundation for studying and formulating the standard of I anal mobile communication system.)