摘要
针对无线传感反应网络中事件频发区域内执行器节点能耗过大的问题,提出一种基于功率控制的动态任务招标策略.利用拍卖机制,考虑事件发生频率和先验数据,确定2类候选节点数目,其中基本候选节点由任务元数量决定,而冗余候选节点数量由事件发生频率和候选节点不足导致的重新招标次数决定,并利用功率控制技术实现招标范围调整,使得参与事件处理的节点随着事件发生频率而动态变化.仿真实验表明:该策略下任务由多个执行器节点并发协作完成,实时性和网络能耗均衡性都得到改善.
On the basis of power control technology, a dynamic task bidding strategy was proposed to solve “hot zone” problem for wireless sensor and actor networks. The actor nodes involved in event processing consist of two type candidate nodes, in which the number of basic candidate nodes can be computed according to task units and the number of redundant candidate nodes which can be calculated by frequency of events and repeated bidding times due to insufficient nodes. Taking into account incident frequency and priori data, dynamic range of nodes was identified by using auction method. The result of simulation shows that different task units are executed in parallel to enhance higher real-time response, and the strategy could provide more balance in energy consumption
出处
《华中科技大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2011年第4期33-36,共4页
Journal of Huazhong University of Science and Technology(Natural Science Edition)
基金
国家高技术研究发展计划资助项目(2006AA780201-2)
重庆市重大科技专项资助项目(CSTC
2008AB6115)
