计算机工程

• 移动互联与通信技术 • 上一篇    下一篇

基于Ad Hoc移动节点模型的海上DTN建模与性能分析

石尧 1,李晖 1,杜文才 1,李发彬 2   

  1. (1.海南大学 信息科学技术学院,海口 570228; 2.中国人民解放军63812部队,海南 文昌571300)
  • 收稿日期:2016-11-23 出版日期:2018-03-15 发布日期:2018-03-15
  • 作者简介:石尧(1991—),男,硕士研究生,主研方向为海洋通信信息系统;李晖、杜文才,教授、博士生导师;李发彬,工程师。
  • 基金项目:
    国家自然科学基金(61661018);海南省重点研发计划高新技术项目(ZDYF2016010);海南省自然科学基金(20166210);海南省教育厅高等学校科学研究重点项目(Hnky2016ZD-5);海南大学科研启动基金(kyqd1536);海南省教育厅研究生创新科研课题项目(Hys2016-59)。

Modeling and Performance Analysis of Marine DTN Based on Ad Hoc Mobile Nodes Model

SHI Yao  1,LI Hui  1,DU Wencai  1,LI Fabin  2   

  1. (1.College of Information Science and Technology,Hainan University,Haikou 570228,China; 2.63812 Troop of PLA,Wenchang,Hainan 571300,China)
  • Received:2016-11-23 Online:2018-03-15 Published:2018-03-15

摘要:

针对海洋通信环境复杂多变、海上无线基础设施少等特点,提出一种带有锚节点转发时间受限的路由算法。将延迟容忍网络应用于海洋环境中,利用船只存储、携带、转发消息,解决因节点移动造成的通信链路频繁断裂消息无法传送问题。在Matlab环境下对中国南海某海域渔船随机运动轨迹进行建模仿真,海上异构网络中数据包的产生服从泊松分布,在此基础上引入生存时间受限的转发机制。对海上容迟网络通信性能进行分析,比较生存时间、渔船数量以及无线网覆盖范围等对数据包投递的影响。仿真结果表明,该算法可提高数据交付率,降低网络传输时延,提升海上无线通信网络性能。

关键词: 延迟容忍网络, 泊松分布, 移动自组织网络, 生存时间, 交付率, 传输延迟

Abstract:

Aiming at the complex and ever-changeable marine communication environment and the lack of wireless infrastructure,a routing algorithm with anchor node forwarding time limitation is proposed.The application of Delay Tolerant Network(DTN) in the marine environment,the use of the vessel to store,carry,forward messages is to solve the problems that the message can not be transmitted due to frequent mobile communications link breaks.In the Matlab environment,the random trajectory of fishing vessels in a sea area of the south China sea is modeled and simulated.The generation of data packets in a heterogeneous network is subject to Poisson distribution.Based on this,a forwarding mechanism with limited survival time is introduced.The communication performance of DTN is analyzed and the impact of the survival time,the number of fishing vessels and the wireless network coverage on the delivery of data packets is analyzed are compared.Simulation results show that,this algorithm reduce the network transmission delay and improve the performance of maritime wireless communication network.

Key words: Delay Tolerant Network(DTN), Poisson distribution, Mobile Ad Hoc Network(MANET), survival time, delivery rate, transmission delay

中图分类号: