基于DHT的物联网分布式发现系统

A IoT Distributed Discovery System Based on DHT

物联网中海量设备的频繁接入、退出以及动态的网络变化为节点管理带来了压力,结构化的P2P网络可以有效缓解这种压力,但是大多数物联网P2P网络只能利用节点ID进行简单搜索。本文对分布式哈希表(DHT)进行改进,实现利用节点的多个属性和属性的范围进行搜索和管理。基于改进后的DHT,实现了一种新的物联网资源发现系统,它可以将物联网内的各类资源组织在一起,形成一个分布式、松耦合的物联网架构。实验结果表明该搜索系统可以在物联网中实现高效的资源发现。

The Internet of Things（ IoT） is envisioned to adapt massive of devices accessing or exiting and frequent network changes,which brings lot of pressure to nodes management. Structured P2 P network can effectively relieve this pressure. But most P2 P networks simply support to search node with node ID. This paper improves Distributed Hash Table（ DHT） and realizes searching and managing with node properties and range of properties. Based on improved DHT,this paper realizes a new kind of IoT resource discovery system. This system could organize all kinds of resource in IoT and form a distributed and loosely coupled system for IoT system. Experiment showes the search system could realize effective nodes search in distributed IoT.