摘要： 针对物联网中现有物件名称服务查询机制的查询时延大、查找效率低等缺点，提出一种基于Chord算法的物联网信息查询机制。应用OMNET++网络平台进行仿真实验，结果表明，该机制在网络负载均衡、查询效率等方面有所改善，使网络时延由1.5 s左右降低到0~0.025 s之间，适用于地址空间急剧增长的物联网。
关键词:
物联网,
物件名称服务,
分布式哈希表,
Chord算法,
查询效率
Abstract: Aiming at the search shortcoming and the low efficiency of Object Naming Service(ONS) for the Internet of things, this paper proposes an information query system, which is based on Distributed Hash Table(DHT) networking search technology——Chord algorithm. Simulation experiments by OMNET++ network simulation platform prove that the network load balance and inquiry efficiency are improved. It makes the network delay reduced from 1.5 s to 0.025 s, which is suitable for the Internet of things.
Key words:
Internet of things,
Object Naming Service(ONS),
Distributed Hash Table(DHT),
Chord algorithm,
query efficiency
中图分类号:
李占波, 邰金华, 刘冬冬. 基于Chord算法的物联网信息查询机制[J]. 计算机工程, 2011, 37(23): 107-109.
LI Tie-Bei, TAI Jin-Hua, LIU Dong-Dong. Information Query Mechanism for Internet of Things Based on Chord Algorithm[J]. Computer Engineering, 2011, 37(23): 107-109.