华南理工大学学报(自然科学版) ›› 2011, Vol. 39 ›› Issue (7): 38-44.doi: 10.3969/j.issn.1000-565X.2011.07.007

• 电子、通信与自动控制 • 上一篇    下一篇

增强Ad hoc 网络连通性的单节点移动算法

张颖 沈中 常义林   

  1. 西安电子科技大学 综合业务网理论及关键技术国家重点实验室,陕西 西安 710071
  • 收稿日期:2011-01-20 修回日期:2011-03-28 出版日期:2011-07-25 发布日期:2011-06-03
  • 通信作者: 张颖(1982-) ,女,博士生,主要从事无线Ad hoc 网络管理研究. E-mail:yingzhang@mail.xidian.edu.cn
  • 作者简介:张颖(1982-) ,女,博士生,主要从事无线Ad hoc 网络管理研究.
  • 基金资助:

    国家自然科学基金资助项目( 60972047) ; 高等学校学科创新引智计划项目( B08038)

Single-Node Moving Algorithm for Improving Connectivity of Ad hoc Network

Zhang Ying  Shen Zhong  Chang Yi-lin   

  1. State Key Laboratory of Integrated Service Networks,Xidian University,Xi’an 710071,Shaanxi,China
  • Received:2011-01-20 Revised:2011-03-28 Online:2011-07-25 Published:2011-06-03
  • Contact: 张颖(1982-) ,女,博士生,主要从事无线Ad hoc 网络管理研究. E-mail:yingzhang@mail.xidian.edu.cn
  • About author:张颖(1982-) ,女,博士生,主要从事无线Ad hoc 网络管理研究.
  • Supported by:

    国家自然科学基金资助项目( 60972047) ; 高等学校学科创新引智计划项目( B08038)

摘要: 利用节点的移动特性,为在不破坏原有链路的基础上减少或消除Ad hoc 网络中的分割节点,提出了一种基于接收信号强度的节点移动算法.该算法在网络中存在分割节点时,根据接收信号强度分别确定移动节点、目标连接节点以及节点移动的目标位置.文中还根据接收信号强度定义了链路的代价函数,节点的移动就是搜索该函数最小值的过程.仿真结果表明,在节点位置信息未知的情况下,移动单个节点可以增强网络连通性,同时最大程度地保持网络覆盖.

关键词: Ad hoc 网络, 连通性, 接收信号强度, 节点移动

Abstract:

Proposed in this paper is a node moving algorithm based on the receiving signal strength,which is used to reduce or eliminate the cut nodes through the node movement without disconnecting the existing links. In this algorithm,according to the receiving signal strength,the moving node,the target node that the moving node tries to connect to,and the moving target position are respectively determined in the presence of cut nodes. Also,the cost
function of links is defined,by which the movement of node is transformed into a process of minimizing the cost function value. Simulated results show that,with the help of the proposed algorithm,the connectivity of Ad hoc networks can be improved only by moving a single node even when the node information is unavailable,and the network coverage keeps unchanged.

Key words: Ad hoc network, connectivity, receiving signal strength, node moveme

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