无线通信网络的建模及故障传播

Modeling for wireless communication network and fault propagation

针对级联故障在网络数学模型中展现的局限性,基于复杂网络和图论的基本原理,对无线通信网络进行建模,并对网络中的故障传播进行研究。根据复杂网络中的无标度模型,建立由网络节点和通信信道组成的线图模型。针对无线通信网络中的级联故障,分别从网络故障等级、节点容错能力大小、初始故障节点数目等方面研究故障在通信网络中的传播情况。仿真结果表明,线图模型能够更直观地体现网络特性,同时故障参数会影响级联故障在通信网络中的传播。

For the limitations of the mathematical model when reflecting cascading failures, based on the principles of complex networks and graph theory, this paper models for wireless communications networks, and studies the network fault propagation as well. According to the complexity of the network scale model, a line graph model composed by network nodes and communication channel is formulated. It studies the cascading failure in wireless communication network in the aspects of network error level, node fault tolerance level, the initial number of the failed node and so on. Simulation results show that the line graph model can reflect more intuitive network characteristics, and fault parameters can affect the spread of cascading failures in the communication network.