| 摘要 |
PURPOSE:To perform communication with a targeted mobile station appropriately by reducing the probability of invalid incoming connection to the mobile station by paying special attention on a base station at the end of exit of each exchange station in its area at the time of recognizing the present location of the mobile station. CONSTITUTION:When a road station (base station) D7 being brought into contact with an adjacent section station A0B1C2 at the end of a section station A0B1C1 detects the mobile station 16, the section station A0B1C1 transmits the data of the mobile station setting a boundary display bit at (1), and a section station A1B1 that is a registration station stores position data in a traveling vehicle table 80. And when the boundary display bit shows (1) at the time of indexing the traveling vehicle table 80 about the mobile station 16 by the registration station A1B1, the station A1B1 holds the transmission of the message until the position data showing (0) by boundary display bit about the mobile station 16 is received afterwards. Thus, by paying the special attention on the station at the exit of the section station 30 in its area, it is possible to reduce the probability of the invalid incoming connection to the mobile station 16. |
