露天矿无线局域网信号质量的空间查询方法

针对基于WiFi技术构建的矿区无线局域网，从移动端到服务器的数据传输时间（是否延迟）在某种意义上可以反映出移动端所处位置的网络质量。通过对无线局域网内不同地点数据传输所需时间进行采样，再用Kriging算法对其进行插值，可以得到整个矿区的数据传输的时间延迟值的分布，即描述网络质量的数字表达方式。利用Voronoi图及最小外接矩形对表示网络质量的空间相关数据进行空间索引，可以使移动用户实时获得所处位置的网络质量，从而为其合理安排自身资源提供有效依据。

Spatial Query Method of the Signal Quality of Open-pit WLAN

For the wireless local area network based on WiFi in open-pit，data transmission time from mobile terminal to server reflects the network quality of the mobile terminal's location in a sense. Data transmission time of different points in whole open-pit is sampled，and then processed them with Kriging interpolation method. So the distribution of data transmission time in whole open-pit was obtained，and it is a digital expression of network quality. By making use of Voronoi diagram and MER (minimum enclosing rectangles) to index related spatial data of network quality，the data transmission time of the mobile terminal's location can be obtained，and this value can be an effective evidence for arranging the allocation of resources of mobile terminal program reasonably.