【摘要】 移动传感器网络间歇连通,为了在拓扑动态变化的环境中将数据有效传递到汇聚点,提出了一种基于节点传输概率的数据传输策略PBD。该策略基于传感器节点近期与汇聚点的距离来计算节点将数据成功传递给汇聚点的可能性,并以此作为消息传输时选择下一跳的依据;同时还引入了基于消息优先权的缓存队列管理机制。实验结果证明了PBD的有效性,也表明PBD较好地实现了数据传输成功率与传输能耗、传输延迟之间的平衡。更多还原

【Abstract】 Mobile sensor network is intermittent connected and changeable,in order to delivering data to the sink effectively,this paper proposed a probability based data delivery scheme(PBD),in which nodes delivery probabilities were calculated according to the latest relative distance from themselves to the sink,and nodes with higher probabilities would be chosen to be the next hops for data delivery.PBD also introduced a queue management method based on the message priority.Simulation results show the proposed PBD achieves a better tradeoff between the data delivery ratio and the delivery overhead/delay than other two proposed data delivery approaches.更多还原