Research On Edge Computing Architecture Of Mobile Satellite Communication Network

Traditional mobile communication satellites are only used as information relay stations in the communication process and do not have data processing capabilities.Moreover,traditional satellite networks have the disadvantages of large propagation delay and expensive spectrum bandwidth resources,which cannot meet the development of delay-sensitive services.In order to solve the above problems faced by mobile satellite communication networks,this paper refers to the development trend of edge computing technology in ground-based networks,and proposes to apply the concept of edge computing to future mobile satellite communication networks to form a new generation of mobile communication network edge computing architecture to meet Various emerging business application requirements.The mobile satellite communication network edge computing architecture enables business processing to be performed in the edge network node closer to the user side,thereby effectively shortening service response time,saving precious backhaul bandwidth resources in the satellite network,and alleviating remote cloud data processing The calculated pressure of the center.The main research work of this article is carried out from the following two aspects..This paper proposes an edge computing architecture suitable for mobile satellite communication networks.First,a detailed demand analysis of the satellite edge computing architecture is carried out.Applying the edge computing concept to traditional satellite communication networks can bring tremendous performance improvements,and further design the mobile satellite communication network edge computing architecture.Based on the layered idea,this architecture It is divided into four layers: application service layer,orchestration control layer,virtualization layer,and basic resource layer.Then,the paper uses lightweight virtualization,software-defined networking,virtual switching and other technologies to implement the architecture.Finally,in order to test the performance of the mobile satellite communication network edge computing architecture,this paper builds a demonstration verification system for testing.The test performance indicators are: response delay,bandwidth consumption,and download speed.Experimental results show that the mobile satellite communication network edge computing architecture designed in thispaper saves half of the response delay and bandwidth resources and the download speed is increased by nearly 30% compared with the traditional mobile satellite communication network architecture.On the other hand,in order to solve the problem of multi-user computing offload in the satellite edge computing architecture,this paper has designed a method for offloading satellite edge computing based on game theory.To solve the problems of mutual interference caused by simultaneous multi-user uninstallation and limited resource of computing nodes at the edge of mobile satellite communication network in computing offloading,this paper transforms the computing offloading problem into a game problem.Achieving Nash equilibrium through limited iterations,a game offloading algorithm based on game theory is designed.Compared with the three offloading methods of LP,IWD and IQD in terms of local resource consumption and overall resource consumption,this algorithm has better adaptability can better reduce the resource consumption of the system.