基于随机Petri网的虚拟网可生存性模型研究  

Survivability model for reconfigurable service carrying network based on the stochastic Petri net

作　　者：赵靓[1] 邹宏 张校辉[1] 

机构地区：[1]国家数字交换系统工程技术研究中心,河南郑州450002 [2]国家网络空间安全发展创新中心,河南郑州450000

出　　处：《通信学报》2016年第3期71-78,共8页Journal on Communications

基　　金：国家高技术研究发展计划("863"计划)基金资助项目(No.2015AA016102);国家重点基础研究发展计划("973"计划)基金资助项目(No.2012CB315905);国家科技支撑计划基金资助项目(No.2012BAH02B01)~~

摘　　要：针对在描述可重构服务承载网(RSCN)差异化服务需求时无法定量描述其安全属性的问题,提出了一种RSCN可生存性模型。模型基于随机Petri网构建,首先构建RSCN的非马尔可夫随机Petri网模型,再基于最常用的先到先服务(FCFS)故障修复策略得到系统状态可达图,通过引入补充变量建立系统状态概率方程,并最终求解得到该模型。通过仿真实验对该可生存性模型的有效性进行验证,仿真结果表明,理论模型计算结果与仿真结果拟合性较好,可用于描述基于FCFS故障修复策略的RSCN可生存性能。Aiming at the defect that the security attribute of RSCN couldn＇t be described with measurement, a survivability model for RSCN was proposed based on the stochastic Petri net. Firstly, a non-Markovian stochastic Petri net for RSCN was proposed, and then the state schematics was educed based on the FCFS fault repair policy subsequently. Finaly, the survivability model was concluded based on the probability equation of system state by importing supplementary variable. The model was analyzed and validated for validity through emulational experiments. The emulational results show that the comparability between the computed-results of model and emulational results is good, and the model can be used to discribe the survivability for RSCN.

关 键 词：可重构服务承载网 可生存性模型 随机PETRI网 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]