一种分层无线传感器网络数据收集方法研究

The research of a hierarchical data collection approach for wireless sensor networks

无线传感器网络是资源受限的网络,而基于移动sink节点进行数据收集是提高网络性能的有效机制。我们研究了求解移动节点的调度的MES算法,提出了基于簇结构和移动sink节点调度相结合的分层数据收集算法,该算法基于簇结构计算移动sink节点移动路径。最后,通过仿真验证分析了该算法的性能,结果表明算法能在能量高效的前提下,显著提升网络时延等QoS性能,且对网络结构和应用环境具有良好的适应性。

Wireless Sensor Networks （WSNs） are resource-limited networks, especially the resources of energy. Using mobile sink as a solution for collecting the data is an effective way of improving net- work performance. In this paper, firstly, we analyze the Mobile Ele- ment Scheduling（MES） algorithms such as PBS. Subsequently, a new energy and delay aware Hierarchical Data Collection based on Clusters and Mobile sink （HDCCM） algorithm is presented which computes the path of mobile sink basing on cluster, not basing on every sensor directly. Lastly, a simulation to analyze and evaluate their performances is implemented. The result show that the pro- posed algorithm not only can enhance Quality of Service（QoS） per- fromances such as delay and data loss rate, but also has excellence flexibility to networks topology and size.