北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2009, Vol. 32 ›› Issue (4): 81-85.doi: 10.13190/jbupt.200904.81.liy

• 论文 • 上一篇    下一篇

间断连接无线互联网下的E-PROPHET

李云 ;李欣 ;刘期烈   

  1. 重庆邮电大学光互联网及无线信息网络研究中心
  • 收稿日期:2008-10-24 修回日期:2009-05-23 出版日期:2009-08-28 发布日期:2009-08-28
  • 通讯作者: 李云

EPROPHET in Intermittently Connected Networks

LI Xin   

  • Received:2008-10-24 Revised:2009-05-23 Online:2009-08-28 Published:2009-08-28
  • Contact: LI Xin

摘要:

在介绍并分析了基本的间断连接无线互联网路由协议的原理和性能的基础上,提出了一种改进概率估计传染路由算法(EPROPHET). 该算法把节点接触频率和接触持续时间的概率估计思想引入路由协议,以达到准确选择下一跳转发数据包的目的. 仿真结果表明,该算法较PROPHET和Epidemic明显减小了系统消耗,提高了数据包交付率.

关键词: 关键字:间断连接无线互联网, 路由, 概率, 持续时间, E-PROPHET

Abstract:

When introducing and analyzing routing protocols in intermittently connected wireless networks (ICWN), an enhanced probabilistic routing protocol is proposed using history of encounter and transitivity (EPROPHET) for ICWN. EPROPHET forwards messages to the nexthop according to the contact frequency and contact duration. Simulation indicates that EPROPHET saves the buffer space, improves the packet delivery ratio, and decreases the endtoend delay.

Key words: Key words:Intermittently Connected Networks, Routing, Probability, Duration, E-PROPHET