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一种新的基于位置信息的MANET路由协议

陈灼;刘凯;张军
  

  1. (北京航空航天大学 电子信息工程学院,北京 100083)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-02-20 发布日期:2007-02-25

A novel location-based routing algorithm for mobile Ad Hoc networks

CHEN Zhuo;LIU Kai;ZHANG Jun
  

  1. (School of Electronics and Information Engineering, Beihang Univ., Beijing 100083, China)
  • Received:1900-01-01 Revised:1900-01-01 Online:2007-02-20 Published:2007-02-25

摘要: 针对MANET中频繁拓扑变化而导致链路的稳定性明显下降的问题,提出一种基于位置信息的MANET路由算法,即位置网格路由(LBGR)算法.在该算法中,数据包沿着地理网格的轨迹向前转发,每个中转节点根据它与相邻节点、目的节点的位置关系及下游的网格位置决定下一跳节点.由于利用了网格位置信息,该算法可以适应在节点高速移动和拓扑无法事先预测的变化,从而提高所维护路由的鲁棒性.仿真结果表明,与传统的位置辅助路由算法相比,在消耗网络资源较少的情况下,LBGR算法能够有效地提高端到端数据传输成功率和减少每条路径上的平均跳数.

关键词: 移动Ad Hoc网络, 路由, 位置信息, 网格

Abstract:

A location-based grid routing (LBGR) algorithm for mobile Ad Hoc networks is presented. To improve the capability of strong route maintenance in the presence of frequent unpredictable topology changes due to node mobility, the LBGR algorithm utilizes position information to employ a forwarding approach based on a grid-constructed trajectory. Based on the position relationship of nodes and downstream grids, each intermediate node infers the next hop to relay packets. Simulation results demonstrate that in the case of lower communication overhead the LBGR algorithm can reduce both the packet dropped rate and the average number of hops per route.

Key words: MANET, routing, location-information, grid

中图分类号: 

  • TP393