基于马尔可夫链的军用Ad hoc网络可用性建模  

Availability Modeling of Military Ad Hoc Network Based on Markov Chain

作　　者：傅妍芳[1] 王赞 苏一昶 戴飞 钟联炯[1] 郭登登 卢颖[1] 梁洪涛 FU Yanfang;WANG Zan;SU Yichang;DAI Fei;ZHONG Lianjiong;GUO Dengdeng;LU Ying;LIANG Hongtao(School of Computer Science and Engineering, Xi'an Technological University, Xi'an 710021, Shaanxi, China;School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710119, Shaanxi, China)

机构地区：[1]西安工业大学计算机科学与工程学院,西安710021 [2]陕西师范大学物理学与信息技术学院,西安710119

出　　处：《兵工学报》2021年第1期65-73,共9页Acta Armamentarii

摘　　要：军用通信网络的规模和复杂程度日益扩大,迫切需要一种高可用性网络来满足用户对高可靠服务的需求,而网络可用性的定量研究,对战术通信网络可靠性能评估具有重要意义。针对战术Ad hoc网络的移动和故障因素,建立了基于马尔可夫链的网络可用性模型,通过分析带有冲突避免的载波侦听多路访问传输机制,研究影响网络业务主要因素的延时模型。在此模型基础上,根据统计学原理,提出一种基于故障的移动Ad hoc网络业务可用性定量评估模型。以某典型陆军战术分队通信网为例,分析了网络可用度与节点个数、传输速率、报文长度等核心指标的关系,通过仿真验证了分析结果的有效性。Nowadays,the scale and complexity of military communication network are increasing,so a high availability network is urgently needed to meet the needs of users for high reliability services,and the quantitative study of network availability is of great significance to evaluate the reliability of tactical ad hoc network.For the mobile model and fault characteristics of tactical ad hoc network,a network availability model based on Markov chain is established,the delay model of the main factors affecting network service is studied by analyzing the CSMA/CA transmission mechanism.On the basis of the proposed model,the statistical principle is used to propose a fault-based quantitative evaluation model of service availability of mobile ad hoc network.And taking a typical combat communication network of an army unit as an example,the relationship between network availability and core indexes such as number of nodes,transmission rate and message length is analyzed,and the effectiveness of the analyzed results is verified by simulation.

关 键 词：Ad hoc网络 马尔可夫链 可用性 仿真 故障 

分 类 号：TN915.851[电子电信—通信与信息系统]