An Enhanced Dynamic Switching-based Flooding scheme in Low-Duty-Cycled WSNs with unreliable links

비신뢰성 링크를 가진 로우 듀티사이클 무선센서네트워크 환경에서 향상된 동적 스위칭 기반 플러딩 방법

Duty-cycling could efficiently prolong the life time of Wireless Sensor Networks (WSNs) by let nodes be in dormant state most of the time, and only wake up (for sending or receiving) for a very short period. Flooding is one critical operation of WSNs. Many studies have been studied to improve the delay and/or energy efficiency of flooding. In this paper, we propose a novel time slot design, and the switching decision that reduce energy consumption for the schedule-based flooding tree. Each node, if failed to receive from its parent, will look for other candidate, among its siblings to overhear the flooding packet. By accurately collect information from other siblings, each node can make the best as possible switching decision; therefore the energy efficiency of the network is improved.