A Spatial Join Strategy Between OGC-Compliant Web Feature Services

We examine the problem of spatial join strategy between OGC-compliant Web feature services(WFS).Based on the semijoin-based join strategy and partition based spatial-merge join strategy,we present a spatial join processing strategy between two OGC-compliant WFS.The experimental result shows that when the cardinality of spatial entities in the query window is large enough,the proposed strategy can reduce the expensive of transmission cost and thus time cost.