基于绕射传播模型的无线Mesh网络拓扑优化

Topology optimization method based on diffraction propagation model for wireless mesh network

有效的网络拓扑布局方法对无线Mesh网络部署及可靠有效传输具有重要的实际意义。为建立有效的信道传播模型,定义了绕射传播模型相关理论和信号衰减估计步骤。在此基础上,提出了基于绕射传播模型的网络布局优化方法。方法基于绕射传播模型对信号衰减的估计,定义每条链路的权重值,通过计算任何两不同节点间的不相交路径,通过合并不相交路径得到优化的网络拓扑布局。通过仿真验证和对比分析,表明提出的拓扑布局优化方法更加符合实际网络布局要求及更具合理性。

An effective topology optimization method for deployment and reliable and efficient transmission of wireless mesh network is important in practicc. To establish an effective channel transmission model,the diffraction propagation model related theory is described and the signal attenuation steps are given. Based on the calculation of the signal attenuation,the network layout optimization method based on the diffraction propagation model is proposed. In this paper,the proposed method first defines the weights of each link based on the estimate of the signal attenuation diffraction propagation model. Then by calculating the augmented paths between any two different nodes and merging augmented paths,the final optimal network topology is established. By simulation and comparison analysis,it shows that the proposed topology optimization method is more reasonable and it meets the requirement well for the actual network deployment.