DTN网络中基于生灭模型的节点运动模式检测  

Mobility model detection method based on birth and death model in DTN environment

作　　者：邓广宏[1,2] 曹万华[1,2] 张剑[2] 程雄[2] 冯力[2] 

机构地区：[1]哈尔滨工程大学计算机科学与技术学院,黑龙江哈尔滨150001 [2]武汉数字工程研究所系统科研部,湖北武汉430074

出　　处：《通信学报》2015年第1期57-67,共11页Journal on Communications

基　　金：国防预研基金资助项目(4010105010103;62101050101;513150802;B0820132036);船舶基金资助项目(09J3.4.1;10J3.7.2)~~

摘　　要：提出了一种DTN网络中基于生灭模型的节点运动模式检测方法(MMD-BDM,mobility model detection method based on birth and death model)。在节点数据传输过程中,根据数据传输量计算得到各个连通链路采样时刻的信道容量,在本节点构建以信道容量构成的三维时变连通矩阵,并在此基础上推导出基于边连通的节点连通性生灭模型,然后分析节点连通边的生灭特征并以此判断节点的运动模式,以优化DTN网络消息投递过程中的路由转发策略。最后,将该运动模式检测方法应用在喷射路由(SWR,spray and wait routing)和随机网络编码路由(RNCR,random network coding routing)算法中进行了仿真实验,实验表明,该方法能提高DTN网络机会路由的投递率和投递延迟等数据投递性能。A mobility model detection method based on birth and death model（MMD-BDM） in DTN environment was proposed. It first computed the connected channel capacity of sampling times according to the data traffic during the data transfer process, and then constructed the time varying intercommunication metrics at local,which composed of channel capacity between local node and others. Based on these, the connection birth and death mode of nodes based on connected edges was deduced, and then the birth and death features of the connected nodes was analyzed to detect the mobility model, which used to improve the routing strategy during the packages deliver process. Ultimately, the mobility model detection method was put into use in spray and wait routing（SWR） method and random network coding routing（RNCR） method to experiment, the simulation results show that, it can improve the opportunity routing performance of the data deliver rate and transfer latency in DTN environment.

关 键 词：延迟容忍网络 生灭模型 节点移动模型 机会路由 

分 类 号：TN919.3[电子电信—通信与信息系统]