移动传感网中基于定向角度路由的数据收集
摘要
In a multi-hop wireless sensor network in which the Sink and all nodes are constantly moving, an energy-efficient and latency-minimized algorithm ROAR is proposed. Firstly, all nodes perform a collector selection algorithm, which is similar to cluster-head selection algorithms, such that nodes with higher energy have a higher probability of becoming collectors. Then, each node sends its data to its neighbors in an effective zone. This zone is determined by drawing a horizontal line between the node and the Sink, and then a vertical line through the middle of this horizontal line; the effective zone is the field that locates in the same side as the Sink. Finally, each collector uses a binary angle transmission mechanism to send its data to the mobile Sink. Simulation results show that, compared with existing algorithms, ROAR can effectively control the direction of data transmission so as to minimize the data collection delay and balance the energy consumption of nodes, thus achieve a longer network lifetime. As a result, ROAR has better performance than existing algorithms, and is suitable for use in mobile wireless sensor networks with frequently changing topologies.