1. Method to repair coverage holes based on wake-up mechanism in wireless sensor networks
- Author
-
Xu Chugui and Deng Xiao-heng
- Subjects
Key distribution in wireless sensor networks ,Computer science ,business.industry ,Node (networking) ,Boundary (topology) ,Table (database) ,Energy consumption ,Wake ,business ,Wireless sensor network ,Energy (signal processing) ,Computer network - Abstract
The failed nodes lead to the phenomenon of coverage holes in wireless sensor networks,which is due to the exhausted energy and destroyed environment.In this paper,the Directed Furthest Node First Policy(DFNFP) was proposed to solve this problem.The method would repair coverage holes by the principle that the boundary nodes of coverage holes select from its neighbor table the non-active node farthest from the center to replace the failed node and activate the replacement node.The simulation results show DFNFP can maintain better quality of coverage,and make full use of energy resources,and extend lifetime of networks.Moreover,DFNFP is superior to Best Fit Node Policy(BFNP) in average time and energy consumption for repairing the coverage holes.
- Published
- 2013