新型互联网层次化服务标识解析映射系统的设计与实现

发布时间：2018-06-04 07:47

本文选题：新型互联网 + 层次化　；参考：《北京交通大学》2017年硕士论文

【摘要】：互联网作为整个社会的关键基础设施,已经渗透到人们生产、生活等各个领域,然而面对着网络中海量的资源与服务,传统的域名系统由于其命名的局限性和解析系统的移动性不足,已经无法适应新型互联网架构。因此,本文在调研国内外现有服务解析机制的基础上,结合新型互联网特点,在"服务层"中设计了一种层次化服务标识解析映射系统,该系统提出一种基于内容的层次化命名和描述机制,并设计了相应的层次化解析映射系统,实现了对服务和资源的统一描述和管理。本文的工作重点是对服务资源进行统一化命名与描述,设计相应解析映射系统,并对解析结果按"相关度"排序。首先,本文结合"服务层"的需求,在参考NDN命名机制的基础上,设计了一种以内容为中心的层次化服务标识命名和描述机制,该机制采用服务标识及其映射信息共同去标识某个服务或资源,使得对服务的描述更加清晰和全面。接着针对新的命名和描述机制,在借鉴现有域名解析系统的基础上,设计了一种层次化的服务标识解析映射系统,该系统采用一种名称最长前缀匹配的迭代方式进行系统解析,使得每次解析不必都访问根服务器,而是直接从名称匹配最长的中间某台映射服务器开始向下解析,很好的均衡层次化系统上层服务器的压力,减少查询跳数,提高查询速率。最后在查询完成后,为使用户能够更好的对查询结果进行选择,本文中对每个查询结果定义了 "相关度"的概念,并对结果进行了"相关度"排序。本文的主要工作包括:首先对现有的服务命名和解析机制进行了调研和分析,并对新型互联网背景进行了简要介绍。其次详细介绍了层次化服务标识及其映射结构信息的设计。接着详细阐述了本文设计的层次化解析映射系统的体系结构、工作流程、数据包设计和最长前缀匹配的实现机制,并对每一部分的实现进行了详细说明。然后详细介绍了查询结果的"相关度"概念,并对"相关度"排序的处理流程和主要实现函数进行了详细阐述。之后搭建实验环境,对上述系统设计进行测试和分析。最后对本文的工作进行简要总结,并对研究内容进行展望。
[Abstract]:As the key infrastructure of the whole society, the Internet has penetrated into people's production, life and other fields, but in the face of the vast amount of resources and services in the network, The traditional domain name system is unable to adapt to the new Internet architecture because of its limitation of naming and the lack of mobility of the analytic system. Therefore, on the basis of investigating the existing service resolution mechanisms at home and abroad and combining the characteristics of the new Internet, this paper designs a hierarchical service identification parsing mapping system in the "service layer". This system proposes a hierarchical naming and description mechanism based on content, and designs a hierarchical mapping system to describe and manage services and resources. This paper focuses on the unified naming and description of service resources, the design of the corresponding analytic mapping system, and the ranking of the analytical results according to the "correlation degree". First of all, according to the requirement of "service layer" and referring to the naming mechanism of NDN, this paper designs a named and describing mechanism of hierarchical service identification based on content. This mechanism uses service identification and its mapping information to identify a service or resource, which makes the description of the service clearer and more comprehensive. Then, aiming at the new naming and description mechanism, based on the existing domain name resolution system, a hierarchical service identification parsing mapping system is designed. The system uses an iterative method of matching the longest prefix of the name to parse the system. Each parse does not have to visit the root server, but directly from the middle mapping server with the longest name matching to start the downward analysis, which balances the pressure of the upper server of the hierarchical system, reduces the number of query hops, and improves the query speed. Finally, after the completion of the query, in order to enable the user to better select the query results, this paper defines the concept of "relevance degree" for each query result, and sorts the results "relevance degree". The main work of this paper is as follows: firstly, the existing service naming and parsing mechanisms are investigated and analyzed, and the background of the new Internet is briefly introduced. Secondly, the design of hierarchical service identification and its mapping structure information is introduced in detail. Then, the architecture, workflow, packet design and longest prefix matching mechanism of the hierarchical analytic mapping system designed in this paper are described in detail, and the implementation of each part is described in detail. Then, the concept of "relevance degree" of query results is introduced in detail, and the processing flow and main implementation functions of "correlation degree" ranking are described in detail. Then the experimental environment is built to test and analyze the above system design. Finally, the work of this paper is briefly summarized, and the research content is prospected.
【学位授予单位】：北京交通大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TP393.09

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