Abstract: This paper analyses the schedule mechanism of TinyOS, which is a representative operating system of WSN, and also points out some shortages of TinyOS. Then some improving methods are presented accompanied with the realization of prioritized task schedule scheme. The simulation result and application result on the actual WSN system-GAINS indicate that the priority schedule of TinyOS can improve communication performance significantly.

Key words: Wireless sensor networks, TinyOS, Schedule strategy, Priority

摘要： 分析了具有代表性的无线传感器网络操作系统TinyOS的调度机制并指出其不足。在此基础上提出了改进方案并实现了基于优先级的调度策略。从模拟仿真及在实际系统GAINS节点中应用的结果可知，该改进方法能很好地改善无线传感器网络通信性能。

关键词: 无线传感器网络, TinyOS, 调度策略, 优先级

CLC Number: 

• TP393