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目前大多数针对WLAN-Mesh网络中MAC协议公平性问题的分析都是在纯计算机仿真的结果上开展的.然而,纯计算机仿真软件中的模型往往与实际的网络存在偏差,从而导致其仿真结果的可信度较差。半实物仿真(hardware in loop simulation)是一种将网络中非线性、随机性较大的因素用实际的网络设备加载,其余部分则在仿真中建模的新型仿真方法.本文旨在利用半实物仿真平台研究WLAN-Mesh网络中MAC协议公平性问题.首先针对传统纯计算机仿真结果的局限性进行了探讨.接着,利用自行研制的实际业务流终端构建了基于EXata的半实物网络仿真系统.最后,结合不同网络环境下的半实物仿真结果,对WLAN-Mesh网络中MAC协议的公平性问题做了详细的分析.
Most of the current analysis of MAC protocol fairness in WLAN-Mesh networks is based on the results of pure computer simulation.However, the models in pure computer simulation software often deviate from the actual network, leading to the simulation results The credibility of the less. Hardware in loop simulation is a new simulation method that loads the nonlinear and random factors in the network with actual network equipment and the rest is simulated in the simulation.This paper aims to make use of semi-physical Simulation platform to study the problem of MAC protocol fairness in WLAN-Mesh network.Firstly, the limitation of the traditional pure computer simulation results is discussed.Secondly, an exata-based semi-physical network simulation system is constructed by using the actual business flow terminal.Finally, , Combined with the semi-physical simulation results under different network environments, the MAC protocol fairness problem in WLAN-Mesh network is analyzed in detail.