北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2010, Vol. 33 ›› Issue (5): 28-32.doi: 10.13190/jbupt.201005.28.liuql

• 论文 • 上一篇    下一篇

运用HTC解决延迟容忍网络路由问题

刘期烈1,2,潘英俊1,李云2,赵晓娜2   

  1. 1重庆大学 光电技术及系统教育部重点实验室;  2重庆邮电大学 移动通信重点实验室
  • 收稿日期:2009-10-21 修回日期:2010-04-01 出版日期:2010-08-28 发布日期:2010-06-15
  • 通讯作者: 刘期烈 E-mail:liuql@cqupt.edu.cn
  • 基金资助:

    国家级.国家自然科学基金项目

Solving the Routing Problems in Delay Tolerant Networks by HTC

  • Received:2009-10-21 Revised:2010-04-01 Online:2010-08-28 Published:2010-06-15

摘要:

针对传统最短路径算法不适用于延迟容忍网络(DTN)路由选择以及DTN路由选择的特性,提出了一种基于跳数、权值随时间变化(HTC)的最短路径算法. 该算法的设计不仅考虑到节点间空间因素,还考虑了无线链路的时间因素和该算法的复杂度与正确性. 仿真结果表明,与现有的最早接触(FC)路由算法以及最小预期时延(MED)路由算法相比,此算法可更有效地得到DTN中时延最短的路径.

关键词: 延迟容忍网络, 路由, Floyd, 基于跳数、权值随时间变化

Abstract:

The traditional shortest path algorithm is not suitable for the routing choice in delay tolerant networks (DTN). According to the routing features in DTN,a new shortest path algorithm hopbased, timevarying cost (HTC) is proposed based on the hop and the cost varied with the time. The design of the routing algorithm not only considers the space factor between the nodes in DTN, but also the time factor of the wireless links and the complexity and accuracy. Simulation compared with the existing routing algorithm such as first contact (FC), minimum expected delay (MED), indicate that the algorithm proposed by this paper is more effective to get the shortest path.

Key words: delay tolerant network, routing, Floyd, hopbased timevarying cost