异构无线网络融合的建模仿真与性能评估  

Modeling,Simulation and Performance Assessment for an Integration of Heterogeneous Wireless Networks

作　　者：许晓璐[1] 蒋文贤[1] 

机构地区：[1]华侨大学计算机科学与技术学院,福建厦门361021

出　　处：《华侨大学学报（自然科学版）》2014年第3期257-262,共6页Journal of Huaqiao University(Natural Science)

基　　金：福建省工业科技计划重点项目(2014H01010199)

摘　　要：结合IEEE 802.16和IEEE 802.11标准实现移动互联网的接入,设计一种将WiMAX作为Wi-Fi回程支持的异构无线网络融合模型.利用OPNET仿真工具进行建模,采用自相似Pareto分布生成实时、非实时业务的网络流量,并根据不同应用的优先级需求,得出异构无线网络中相应业务的最优配置.分析结果表明:该融合模型与传统模型相比,不仅在实时和非实时业务上的时延抖动和响应时间更优,而且能满足异构无线网络对VoIP,HTTP和FTP等应用的服务质量(QoS)需求.For providing mobile Internet access requirements by the integration of IEEE 802.16 and IEEE 802. 11 stand- ards, we design heterogeneous wireless network integration model using WiMAX as Wi-Fi backhaul support. Using OP- NET simulation tool for the modeling, based on the network self-similar traffic model Pareto distribution to generate net- work traffic of real-time and non-real-time services. According to the priority needs of different traffic, we get the optimal configuration of corresponding service in the heterogeneous wireless network. Through of the analysis of network per- formance indicators in the experiment, it is proved that the integration model in comparison with the traditional model of real-time and non-real-time business, not only delay jitter and response time better, but also the model can meet the re- quirements of the heterogeneous wireless network VoIP, HTTP and FTP applications such as QoS （quality of service）.

关 键 词：异构网络 融合模型 WIMAX WI-FI PARETO分布 服务质量 仿真分析 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]