A wakeup scheme for sensor networks: achieving balance between energy saving and end-to-end delay

Xue Yang, N.H. Vaidya
Proceedings. RTAS 2004. 10th IEEE Real-Time and Embedded Technology and Applications Symposium, 2004.  
Energy saving is a critical task for sensor networks with limited energy supply. Wakeup schemes that turn off sensors' radio when communication is not necessary have great potential in energy saving. However, existing wakeup schemes have some limitations. Particularly, many of them encounter the critical tradeoff between energy saving and wakeup latency. In the presence of such tradeoff, limited attention has been paid to reducing the packet end-to-end delay while preserving the energy saving
more » ... the energy saving capability. We argue that a long delay can be detrimental for large sensor networks. This paper proposes a wakeup scheme that helps to achieve the balance between energy saving and end-to-end delay. The conditions under which the proposed scheme can show improvement are identified. Simulation results show that significant improvement can be achieved using the proposed wakeup scheme in terms of both energy saving and end-to-end delay, especially for sensor networks with low channel bit rate.
doi:10.1109/rttas.2004.1317245 dblp:conf/rtas/YangV04 fatcat:2wh7ustadzcgbixyyrqx3x4smi