摘要
IMS是实现地面网融合的关键技术,将IMS应用到卫星通信系统,提出一套融合的体系架构,实现卫星网与地面网用户的互通,通过统一的会话管理和资源分配,实现用户的多种接入方式,保证用户通信时的服务质量;利用OPNET仿真软件搭建TDMA卫星模型,通过Linux嵌入式系统实现IMS核心功能,最后通过半实物仿真对融合体系的可行性和资源分配机制的合理性进行验证;仿真结果表明,提出的融合体系架构基本可行,给出的资源分配机制比较合理,能够满足用户基本需要。
IMS is the key technology to realize convergence of ground network. We apply IMS to satellite communication systems, put forward a set of convergence architecture,and achieve interoperability of users between ground network and satellite communication systems. It implements the user multi-access methods and ensures the service quality of communication for users via a uniform session management and resource allocation. We use OPNET simulation software to build TDMA satellite model and implement the core functions of IMS by embedded Linux system. Finally, this paper validates feasibility of convergence system and rationality of resource allocation mechanisms by the-loop simulation system. The simulation results show that the proposed convergence architecture is basically feasible and the given resource allocation mechanism is more reasonable,which meet the basic needs of users.
出处
《无线电通信技术》
2012年第4期18-20,41,共4页
Radio Communications Technology
关键词
TDMA卫星通信系统
IMS
融合
资源分配
TDMA satellite communication system
IP Muhimedia Subsystem
convergence
resource allocation
