融合卫星通信的5G网络技术研究

Research of Network Technologies of 5G Integrating Satellite Communication

首先介绍了5G网络的发展现状,概述了5G网络融合卫星通信的必要性;然后从网络架构方面总结了5G国际标准化组织3GPP针对卫星通信与5G网络融合所做的研究,详细阐述了支持目前卫星通信和5G网络融合所需增强的网络技术,主要包括移动性管理技术增强、QoS控制和策略控制增强以及NAS协议适配。根据目前卫星通信与5G网络融合的研究现状,进一步提出未来天地一体化网络是卫星通信与5G网络深度融合的发展趋势,并探讨了未来天地一体化组网后的网络架构特征,最后分析了天地一体化网络在网络技术方面面临的挑战。

This paper first introduces the development status of 5G network,and points out the necessity of integrating satellite communication into 5G network.Then it summarizes the research work of 3GPP,which is the international standardization organization for 5G,on the integration of 5G network and satellite communication from network architecture aspect,and lists out the network technologies to be enhanced to support the integration of 5G network and satellite communication,including the enhanced mobility management,enhanced Policy control and QoS control,and the adaptation of NAS protocol.Furthermore,according to current research status on the integration of 5G network and satellite communication,this paper puts forward that the future integrated space and terrestrial network is the trend of integrating satellite communication into 5G network,and discusses the network architecture characteristics of the future integrated space and terrestrial network.Finally,the paper analyzes the challenges on network technologies that the integrated space and terrestrial network will face.