北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2011, Vol. 34 ›› Issue (2): 113-117.doi: 10.13190/jbupt.201102.113.liuql

• 研究报告 • 上一篇    下一篇

延迟容忍网络中基于分离时间和副本控制的路由算法

刘期烈1,2,潘英俊2,李云1,王祥1   

  1. 1重庆邮电大学 移动通信重点实验室, 重庆 400065; 2重庆大学 光电技术及系统教育部重点实验室, 重庆 400044
  • 收稿日期:2010-08-16 修回日期:2010-11-06 出版日期:2011-04-30 发布日期:2011-04-28
  • 通讯作者: 刘期烈 E-mail:liuql@cqupt.edu.cn
  • 基金资助:

    国家自然科学基金项目(60171118,60973160); 重庆市杰出青年基金项目(CSTC2010BA4010),重庆邮电大学基金项目(A200928)

A Routing Algorithm Based on Separation Time and Copy Control in Delay Tolerant Network

  • Received:2010-08-16 Revised:2010-11-06 Online:2011-04-30 Published:2011-04-28
  • Contact: LIU Qi-Lie E-mail:liuql@cqupt.edu.cn

摘要:

延迟容忍网络中,基于历史消息转发路由协议可根据节点的历史统计信息对下一跳节点进行预测估计,以此判断转发和存储信息的最佳时机,避免信息盲目转发. 为此,针对典型spray and focus协议选择中间节点的盲目性,将“分离时间”和“副本控制”运用于路由选择、缓存管理和组播方式中,可较好地节约资源,并提高通信效率.仿真结果表明,改进后的协议有效地提高了网络交付率,减小了端到端的时延.

关键词: 延迟容忍网络, 分离时间, 副本控制, 缓存管理, 组播路由

Abstract:

Delay tolerant network (DTN) routing protocol based on historical information forwarding, according to the history of statistics forecast estimates on the next hop node, forwarding and storage of information to judge the best time, and avoids blindly forwarding information. In this paper, the typical spray and focus protocol choice blindness among nodes, the "separation time" applied to routing, buffer management and multicast mode, the good conservation of resources and improves communication efficiency. Simulation results show that the improved protocols effectively improve delivery ratio and shorten the message delivery delay.

Key words: delay tolerant network, separation time, copy control, buffer management, multicast routing

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