摘要
为解决基于OPNET网络仿真器的Zigbee传感器网络仿真系统的控制开销大、网络延时大、可扩展性差、不能保证节点全部接入网络等问题,提出一种改进的仿真系统.利用OPNET仿真开发平台提供的IEEEE802.15.4协议的MAC层进程模型和无线管道模型,设计了与Zigbee协议兼容的网络层协议、路由算法,创建了嵌入路由功能的网络层进程模型.给出了其模型结构和功能实现方法,将所提出的模型与Zigbee自带模型进行了试验对比,对网络接入开销、端到端延时等性能进行了分析,并总结了建模过程中的一些经验.结果表明,新系统在不同网络规模下入网控制开销小、网络延时小;而且可扩展性强、节点全部入网所需的路由器节点少,可有效应用于面向工业监控的传感器网络.
To solve the disadvantages of high-latency,poor-scalability and unguaranteed network access to all nodes of existing Zigbee sensor network simulation systems based on OPNET network simulator,a new improved simulation system was proposed.MAC layer protocol process model and wireless channel model of IEEE802.15.4 protocol provided by OPNET simulation development platform were adopted to design a network layer protocol and routing algorithm compatible with Zigbee protocol.A network process model embedded routing function was also established.The model structure and implementation methods of kernel functions were given to compare with Zigbee own model.The properties of network access consumption and end-to-end time delay were analyzed to achieve some useful experiences during the procedure of constructing models.The results show that at different network scales,the improved Zigbee simulation system has small network control overheads,low end-to-end delay,good scalability and essential router nodes.The proposed simulation system is suitable for sensor networks in industrial monitoring field.
出处
《江苏大学学报（自然科学版）》
EI
CAS
北大核心
2012年第6期671-677,共7页
Journal of Jiangsu University：Natural Science Edition
基金
国家自然科学基金资助项目(61063040
61163059)
广西可信软件重点实验室开放课题项目(kx201100)
广西教育厅重大课题项目(201101ZD006)
桂林市科学研究与技术开发项目(20100104-1)
