无线消防报警网络抗毁性分析与提升方法

Analysis of invulnerability of wireless fire-alarming network and methods of improving it

为提升无线消防报警网络(WFAN)的抗毁性能,从网络拓扑角度分析WFAN。基于小世界网络特征,通过在网络中构建超级链路和超级节点来增强网络抗毁性,并在引入一种全新网络中心化测度基础上,提出超级链路布局策略和超级节点布局策略。实例分析表明,在室内场景与森林火灾场景中,2种布局策略分别通过围绕关键节点布设超级链路与超级节点,使网络中心化分布更加均匀,避免网络因少数关键节点失效而导致整个网络性能急剧下降,在花费较少网络建设成本的同时,能够有效提升WFAN的抗毁性能。

To enhance the invulnerability of WFAN, WFAN was analyzed from the perspective of net- work topology. On this basis, super wires and super nodes were introduced to improve WFAN invulnerabil- ity. Moreover, a novel centrality metric was proposed and on this basis, two layout schemes （i. e. , the layout scheme of super wires and layout scheme of super nodes） were established. Simulation results indi- cate that through constructing super wires and super nodes around key nodes, the established layout schemes are able to make the centrality distribution of WFAN more uniform, which in turn helps the net- work avoid significant performance degradation caused by failures of a few key nodes and thus enhance the invulnerability of WFAN with less construction costs.