The Space-Air-Ground Integrated Networks (SAGINs) converges the rapidly developing ground, aerial and satellite communication networks to provide users with efficient and personalized services through the multi-layer network architecture. The complex structure, inconsistent communication protocol, and incompatible equipment significantly affect the information transmission efficiency in SAGINs. The application of Software Defined Network (SDN) technology promotes global deployment of the SAGIN resources. Aiming at the information transmission bottleneck between controller and switch nodes in the software-defined SAGINs, a dynamic handover transmission control scheme based on the queuing game model is proposed. Considering long transmission delay links in the SAGINs, the traditional queuing game model is improved to reduce the number of information interactions. The users’ service value are defined as the random distribution to describe the various requirements in the network. In addition, the relationship between the social welfare and the arrival rate of the transmission control system is discussed under two modes of observable and unobservable controller queues. Through theoretical analysis and calculation, the unique handover arrival rate is obtained to make the social welfare equal in the two modes. When the arrival rate is less than the handover threshold, the controller queue is set to unobservable mode, and otherwise to observable mode. Then, the system can operate in an optimal way to obtain the maximum benefit. At last, numerical and system simulation verify the effectiveness of the scheme.

中文翻译：

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天地一体化网络动态切换软件定义传输控制方案


天地空地综合网络（SAGIN）融合了快速发展的地面、空中和卫星通信网络，通过多层网络架构为用户提供高效、个性化的服务。复杂的结构、不一致的通信协议和不兼容的设备显着影响了SAGIN的信息传输效率。软件定义网络（SDN）技术的应用促进了SAGIN资源的全球部署。针对软件定义SAGIN中控制器与交换节点之间的信息传输瓶颈，提出一种基于排队博弈模型的动态切换传输控制方案。考虑到SAGIN中的长传输延迟链路，对传统的排队博弈模型进行改进，以减少信息交互的次数。用户的服务价值被定义为随机分布来描述网络中的各种需求。此外，还讨论了可观测和不可观测控制器队列两种模式下社会福利与传输控制系统到达率的关系。通过理论分析和计算，得出唯一的切换到达率，使两种模式下的社会福利相等。当到达率小于切换阈值时，控制器队列被设置为不可观察模式，否则设置为可观察模式。然后，系统才能以最优的方式运行，以获得最大的效益。最后通过数值和系统仿真验证了该方案的有效性。