无线传感器网络中移动节点辅助的数据采集效率优化研究

为了提高无线传感器网络中数据采集效率，提出了一种基于节点分级的混合多跳数据采集（hybrid multi-hop data collection，HMDC） 算法。该算法首先基于数据量将所有节点均匀划分成簇，然后在簇内采用节点分级的思想进行数据的多跳传输，最后使用移动采集器沿着最短路径访问簇头节点，对指定节点进行数据集采集。仿真结果表明，HMDC算法有效地提高了数据采集效率，均衡了能量消耗，延长了网络的生命周期，且更加适用于较大规模的数据采集。

Research on optimization of data collection efficiency assisted by mobile collector in wireless sensor network

To improve the efficiency of data collection in wireless sensor network, this paper proposed a hybrid multi-hop data collection(HMDC) algorithm. This algorithm first divided all nodes into clusters evenly based on data volume. Then it did multi-hop data transmission by adopting the idea of hierarchical nodes within clusters. Finally, it used a mobile collector to access the cluster head nodes along the shortest path to collect the data of the designated node. Simulation results show that HMDC algorithm can effectively improve the efficiency of data collection, balance the energy consumption, prolong the network life cycle, and is more suitable for large-scale data collection.