An Energy Efficient MAC Protocol Considering the Funneling Effect for Wireless Sensor Networks

무선 센서 네트워크에서 퍼널링 효과를 고려한 에너지 효율적인 MAC 프로토콜의 설계

DMAC is an energy efficiency and low latency protocol designed for data gathering tree structures. However, it causes the funneling effect which is many-to-one traffic patterns in tree structures, consequently, results in packet collisions, losses, and energy consumptions in low depth nodes. In this paper, we present an energy efficient MAC protocol with fairness-based scheduling to avoid the funneling effect of DMAC protocol. By using traffic information from children nodes, our protocol dynamically adjusts duty cycles of last-depth nodes to mitigate overloaded packets in the vicinity of the sink node. Therefore, we expect our protocol to save more energy and achieve better packet delivery ratio, compared to DMAC protocol.