J4 ›› 2014, Vol. 41 ›› Issue (1): 6-12.doi: 10.3969/j.issn.1001-2400.2014.01.002

• Original Articles • Previous Articles     Next Articles

Monte Carlo mobile node localization for NLOS environment

KUO Yonghong;ZHOU Wenwen;CHEN Jian   

  1. (School of Telecommunication Engineering, Xidian Univ., Xi'an  710071, China)
  • Received:2012-11-01 Online:2014-02-20 Published:2014-04-02
  • Contact: KUO Yonghong E-mail:yhkuo@mail.xidian.edu.cn

Abstract:

Enhanced Monte Carlo Boxed (EMCB), based on the broadcasting messages of one-hop neighbor nodes, is proposed  in a mobile wireless sensor network for NLOS environment. The utilization efficiency of nodes is improved in the way of message flooding. The located nodes are used as the virtual anchor nodes in order to improve the location precision in the network with few anchors, optimizing the sample boxes of the neighbor nodes. Besides, both the theoretical limit of connectivity and the previous location information are used to enhance the filtering performance. Taking advantage of the one-hop messages, all the nodes are located layer-by-layer. Finally, the results of simulation show that the location precision is improved compared with the traditional algorithms in any situation. Especially, a good performance is achieved with fewer anchor nodes.

Key words: wireless sensor network, node localization, Monte Carlo algorithm, virtual anchor nodes, sampling, filtering