基于3-D SGM移动模型的MANET链路动态性

›› 2012, Vol. 42 ›› Issue (05): 1315-1320.

基于3-D SGM移动模型的MANET链路动态性

郑博, 张衡阳, 黄国策

空军工程大学电讯工程学院,西安 710077

收稿日期:2011-08-05 出版日期:2012-09-01 发布日期:2012-09-01
通讯作者: 黄国策(1962-),男,教授,博士生导师.研究方向:军事通信网.E-mail:huangguoce@163.com E-mail:huangguoce@163.com
基金资助:
国家自然科学基金项目(60972042);航空科学基金项目(20095596016);陕西省自然科学基金项目(2009JM8010,2010JQ8010).

Link dynamics in MANET based on 3-D SGM mobility model

ZHENG Bo, ZHANG Heng-yang, HUANG Guo-ce

College of Telecommunication Engineering, Air Force Engineering University, Xi'an 710077, China

Received:2011-08-05 Online:2012-09-01 Published:2012-09-01

摘要/Abstract

摘要： 针对目前移动Ad hoc网络(MANET)的链路动态性研究多采用传统RD、RWP等移动模型,存在速率突变、急转等不符合现实物体运动规律的现象,致使结论的准确性不高的问题,基于三维平滑高斯半马尔科夫移动模型,采用马尔科夫链理论研究了三维MANET的链路动态性,通过计算两节点间相对速率的概率密度函数和分离距离的一步转移概率矩阵,得到了链路断开概率和链路寿命期望的数学表达式。最后通过仿真实验进行了验证,表明了理论计算结果的准确性。结论对三维MANET网络协议设计具有一定的参考价值。

关键词: 计算机应用, Ad hoc网络, 链路动态性, 移动模型

Abstract: Existing studies of the link dynamics in Mobile Ad hoc Networks (MANETs) are mainly based on some traditional mobility models, such as Random Direction (RD) model and Random Waypoint (RWP) model etc. For these models, the unrealistic moving behaviors, such as sudden speed change and sharp turn, may invalidate the analytical and simulation results of link dynamics. The 3-D Smooth Gauss-semi-Markov (SGM) mobility model, which can truly reflect the physical law of moving objects in 3-D space, and the Markov chain theory were used to study the link dynamics in 3-D MANET. The analytical expressions for the link breakage probability and the expected link lifetime were derived from the probability density function of the relative velocity and the distance transition probability matrix between two nodes. Finally, the derived expressions were confirmed through simulations. The conclusion is valuable for the design of network protocols in 3-D MANETs.

Key words: computer application, Ad hoc network, link dynamics, mobility model

中图分类号:

TP393

郑博, 张衡阳, 黄国策. 基于3-D SGM移动模型的MANET链路动态性[J]. , 2012, 42(05): 1315-1320.

ZHENG Bo, ZHANG Heng-yang, HUANG Guo-ce. Link dynamics in MANET based on 3-D SGM mobility model[J]. , 2012, 42(05): 1315-1320.

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