Research On Key Technologies Of Information Centric Networking For Future Deep Space Exploration

At present,the deep space environment is characterized by scarce nodes and single transmission service.In this case,Delay-Tolerant Networking(DTN)can meet the needs of communication service,solve the problem of long delay and frequent interruption of transmission,and realize the transmission mode of detection data in which the data is pushed from deep space to the Earth.However,with the development of space technology and the deepening of deep space exploration in various countries,the structure of deep space network will become more abundant in the future.Specifically,the types of nodes will be richer and the amount of data transmission will increase.Moreover,nodes will interact with each other frequently and more diverse communication requirements will emerge,such as common data request,subscription of periodic detection data,push of instruction data,etc.DTN focuses on the transmission problem at the beginning of the design,but it is difficult for a single push transmission mode to adapt to the complex communication scenarios in the future,and it lacks efficient content distribution strategy,so its application in future deep space exploration scenarios has great limitations.Therefore,this paper proposes to apply Information Centric networking to the future deep space exploration scenarios and this can solve the changes in service requirements of future scenarios through its internal diversified transmission mode,caching and multi-source transmission mechanism.Information Centric Networking abandons the idea of "host-centric" of the traditional network,proposes the idea of"content-centric" and focuses on the efficient acquisition of data.ICN provides a more diversified transmission mode.On the basis of request/reply transmission mode,it also implements push traffic to meet the needs of different communication scenarios.The cache mechanism makes it possible for data to be distributed and cached in other nodes,thus improving the reuse ratio of data.In addition,the multi-source transmission mechanism in ICN can also effectively utilize the resources of other user nodes to achieve multi-channel parallel download of content blocks,thereby improving data transmission speed and reducing server-side pressure.At the same time,the support of ICN in security and mobility makes it more suitable for deep space environment.The first part of this paper theoretically analyses the advantages of applying ICN to deep space environment,including diversified transmission modes,cache mechanism,security and mobility,and uses ndnSIM to verify the feasibility of ICN in this environment.On this basis,aiming at the characteristics of deep space environment,this paper solves many existing problems of ICN,including the improvement of routing strategy,the design of multiple push modes,the structure of naming and the basic implementation of multi-source transmission,and the proposed solution is verified via experiments on OPNET.Based on the above mentioned work,this paper verifies the feasibility of applying ICN to deep space environment and preliminarily improves its service quality.