一种支持多分辨率查询的数据存储策略

A Data Storage Strategy for Multi-resolution Query

减少空闲侦听是延长无线传感网络生命周期的有效途径。文章分析了无线传感网络在数据处理和数据传输时的能耗问题,提出了一种支持多分辨率查询的数据存储策略。该策略是将指定区域内所有无线传感节点的工作时槽以一种蛇形排列方式进行分配,使各节点周期性地进入睡眠或侦听状态。在任意时刻,有且仅有两个传感节点处于工作状态,既保证了系统的可靠性,又降低了系统的开销。仿真实验表明,该方法减少了空闲侦听,降低了传感器的能耗,有效延长了网络的生命周期。

To reduce idle listening of radio is an effective way to prolong lifetime of wireless sensor network. Analyze energy consumption of data processing and data transmission in wireless sensor networks. A multi - resolution storage scheme is proposed. It makes sensor nodes working in serpentine slot time, which switches sensor nodes between listening and sleeping properly. Only two nodes are working in a particular region at a certain time. Therefore, the system not only becomes more reliable, but also reduces the system consumption. Experiments show that, the scheme reduces the idle listening and the power consumption of sensors, prolongs the network lifetime effectively.