一种基于物理拓扑的DHT物联网解析机制  

A Novel Resolution Service for Internet of Things Based on Physically Topological DHT

作　　者：肖禄[1] 黄韬[1,2] 刘江[1] 魏亮[1] 

机构地区：[1]北京邮电大学,北京100876 [2]南京(中国)未来网络产业创新中心,南京211100

出　　处：《电信科学》2012年第6期25-32,共8页Telecommunications Science

基　　金：国家重点基础研究发展计划("973")基金资助项目(No.2011CB302901;No.2012CB315801);北京邮电大学青年科研创新计划专项基金资助项目(No.2011RC0118)

摘　　要：物联网ONS解析服务存在很多问题,改进后的单/多层DHT解析系统虽然解决了ONS负载不均衡等问题,但是建立逻辑网络时未能考虑节点实际距离,导致解析得到数据的回传效率降低。为解决这一问题,本文提出建立PTDHT-RS,采用将DHT的逻辑网络与实际物理网络良好结合的设计思想,实现了绝大部分信息都可以在域内进行查询解析,从而保证了解析数据的高效回传。参考当前互联网状况对该解析系统进行了分析评估,结果表明该系统整体查询解析效率优于现有单/多层DHT解析系统,同时从部署角度分析,PTDHT-RS仅使用现有的存储技术和约1/10的ONS节点数量就可以处理约1 015个物联网对象标识,能够满足全球范围物联网命名解析服务的预期需求。The name resolution services of the ONS for the internet of things,there are many problems.The improved single/multi-layer DHT resolution system has resolved the load balancing problem of the ONS,but it failed to consider the actual distance of nodes when building a logical network,leading to the return efficiency of the parsed data is reduced.To solve this problem,this paper proposes to establish a novel resolution service for internet of things based on physically topological DHT.It is adopting the design idea of the good combination of DHT logical network and physical network to resolve the vast majority of information locally.It also ensures the much faster return efficient of the parsed data.Reference current status of the internet,we analysis and evaluate the PTDHT-RS.The results show that the whole query and analytical efficiency of this system is superior to the existing single/multi-layer DHT analytical system.From the deployment point of view,PTDHT-RS only use the existing storage technologies and about 1/10 the number of the ONS node to handle about 1015 object identities of information.So the PTDHT-RS able to meet the expected demand of the worldwide naming resolution service of the internet of things.

关 键 词：物联网 对象命名服务 电子产品编码 分布式散列表 物理拓扑化DHT解析系统 

分 类 号：TP391.4[自动化与计算机技术—计算机应用技术]