无线传感器网络操作系统调度策略

提出了一种在无线传感器网络操作系统中可以同时针对周期性任务和非周期性任务进行抢占式调度操作的EF-RM调度策略。在无线传感器节点上执行的任务负载较重的情况下，该调度策略可以保证重要任务的优先执行，此外当无线传感器节点空闲时，通过将节点带入睡眠状态，实现无线传感器节点的节能。所提出的任务调度策略在TinyOS上进行实现，并通过实验测试得出，在总能耗代价增加较少的情况下可以有效地提高系统在较重负载情况下的响应性能。

Scheduling Strategy on Wireless Sensor Networks Operating System

This paper proposes the preemptive scheduling strategy, EF-RM for wireless sensor network operating system. EF-RM can archive the task scheduling for periodical task and un-periodical task. By using the EF-RM scheduling strategy, the important task can be executed with high priority. When a wireless sensor node is idle, the EF-RM can bring the node into sleep mode to save the energy. The scheduling strategy is achieved in the TinyOS. And the experiment shows that EF-RM scheduling strategy can improve the response of the wireless sensor nodes in heavy load with a little cost of energy.