关键词: 无线传感器网络, 覆盖空洞, 移动节点, 空洞修复

Abstract:

Aiming at the problem about network service quality of wireless sensor network caused by coverage holes, this paper proposes a distributed coverage holes repair algorithm CHRND based on non-parallel dichotomy. The CHRND selects?the hole boundary nodes with minor arc as the driving node for repairing coverage holes by using non-parallel mode, and determines the optimal target position of mobile node based on arc dichotomy. Emulation?experiments show that the algorithm can completely repair the coverage holes with a certain number of mobile nodes.

Key words: wireless sensor?network, coverage hole, mobile node, hole repair