Dynamic Radio Map Using Statistical Hypothesis Testing

Private fifth-generation mobile communication networks (5G) have garnered considerable attention for providing various services. In private 5G systems, such as those employed in smart factories, it is necessary to appropriately manage the interference power among diverse systems because each nonpublic operator deploys a gNodeB local area and utilizes similar allocated frequency. Several researchers discussed use of radio map, which stores spatial distribution received signal values tool managing intra-system interference. Radio maps are typically applied television white space, where location base station (BS) fixed average value exhibits time-invariant characteristics. However, networks, estimation accuracy using conventional map lowered BS may be changed when factory rearranged. this study, database server used infer significant difference by means Welch’s ${t}$ -test; then updates based on test results. The simulation results indicate that proposed method can detect changes update accurately.