Design And Implementation Of Hierarchical Service Identifier Resolving&Mapping System In New Internet

As the key infrastructure of the whole society,the Internet has penetrated into people's production,life and any other fields,but in the face of massive resources and services in the internet,the traditional domain name system because of its limitations and resolution of the naming system mobility Inadequate,has been unable to adapt to the new Internet architecture.Therefore,this thesis designs a hierarchical service identifier resolving&mapping system on the basis of researching the existing service analysis mechanism and the characteristics of the new Internet.This system proposes a hierarchical naming and describing mechanism based on content,designs the corresponding hierarchical resolving&mapping system and achieves a unified description and management of services and resources.This thesis focuses on designing the uniform naming and description of service resources,giving the corresponding resolving&mapping system and sorting the results based on the "relevance".Firstly,According to the requirement of "service layer",this thesis designs a naming and description mechanism based on NDN naming mechanism.This naming and description mechanism uses service identifier and its mapping information to identify the service.It makes the description of the service clearer and more comprehensive.Then a hierarchical service identifier resolving&mapping system is designed on the basis of the existing Domain Name System for the new naming and describing mechanism.The system uses a name longest prefix matching iterative method to perform system analysis,So that each resolution do not have to visit the root server,but directly start from the server whose name is longest matched,it can well balance the pressure of the upper server of the hierarchical system,Reduce query hops and improve query efficiency.Finally,when the query is completed,in order to make the user choose the query result better,the concept "relevance" is defined in each query result,and the result is sorted by "relevance".The main work of this thesis includes:Firstly,survey the existing service naming&resolving mechanism and give a brief introduction to the new Internet.Secondly,introduce the design of hierarchical service identifier and its mapping structure information in detail.Thirdly,elaborate the system architecture,workflow,data packet structure and the implementation mechanism of the longest prefix match,as well as explain the realization of each part in detail.Then,explain the concept "relevance" of query results,the processing flow and the main implementation functions of "relevance"which is used to sort the results.Then,set up the experimental environment and test the above system.Finally,make a summary of the work above and propose suggestions for future work.