| 摘要 |
PROBLEM TO BE SOLVED: To provide an apparatus and the like capable of estimating a mobile target boarded by a user carrying a portable terminal by using base-station positional information that can be obtained by a common carrier equipment, of which a spatial granularity is coarse, and of which a temporal interval is irregular, without requiring starting of the positioning function of the portable terminal.SOLUTION: An apparatus includes: movement probability calculation means for calculating a probability of movement, for all combinations, from individual division zones of a previous base station to individual division zones of a following base station; existence probability calculation means for controlling the movement probability calculation means so as to repeat the movement probability calculation means on the basis of a change of base stations connected to a portable terminal in accordance with a temporal elapse and generating, for each mobile target, a tree structure of a probability of existence using, as a node, a probability of movement in individual zone of the respective base stations in accordance with the temporal elapse; and mobile target estimation means for estimating a mobile target at a leaf of the tree structure generated by the existence probability calculation means, the leaf where the probability of existence is the highest, as the mobile target used by a user carrying the aforementioned portable terminal. |
