A dynamic cross-layer and energy-efficient protocol for wireless sensor networks

Wireless sensor networks have prominent feature and promising future, while limited hardware resource and constrained energy pose huge challenge for protocols researcher. This paper proposes a dynamic cross-layer and energy-efficient communication protocol DCLE for wireless sensor networks. In DCLE, a synchronization scheme that features global schedule and stagger sleep is proposed to achieve sleep coordination; the dynamic adaptive listening scheme that adjusts the listening schedule according to the length and variation trend of transmission queue is proposed to reduce forward delay. Based on synchronization scheme and adaptive listening scheme, a cross-layer route scheme is designed that utilizes the synchronization information and queue message to establish and update route. DCLE is implemented in NS2 and the simulation results show DCLE performs well in terms of energy, latency and deliver ratio.