摘要
基于无线传感器网络WSN(Wireless Sensor Network)语义互连思想,讨论了面向应用的WSN任务组合的基本概念、任务关系及任务组合递归算法。将任务组合方法与现行WSN一般性MAC技术相结合,提出了基于任务组合的通用的WSNMAC框架。将该框架应用于具有代表性的WSN MAC中,具体分析了IEEE 802.11MAC和S-MAC在该框架中的实现方式。网络仿真结果显示,基于语义互连采用任务组合方式的MAC协议框架,能有效地改进一般MAC的能耗特性及时延特性,尤其是对于多信息采集的WSN。
Based on the concept of semantic communication, a novel application-oriented task composition algorithm is proposed for Wireless Sensor Networks （WSNs）. A united WSN MAC framework is discussed by involving the algorithm with WSN MAC protocols. The prototype by introducing the framework to IEEE 802.11 MAC and S-MAC are investigated respectively. Simulation results demonstrate that the improved MAC protoeols could effectively decrease the average energy consumption and time delay, especially for a WSN sensing multi-kind of information.
出处
《传感技术学报》
CAS
CSCD
北大核心
2012年第11期1527-1532,共6页
Chinese Journal of Sensors and Actuators
基金
国家自然科学基金项目(61071071)
北航研究生创新基金项目(YCSJ-02-3)
