| 摘要 |
PROBLEM TO BE SOLVED: To provide an ordering entry system to prevent an efficiency deterioration of a data transmission by an interruption of the data transmission, while suppressing a system complication and a cost push. SOLUTION: A handy terminal 17 measures electric field strengths of peripheral radio base stations 14a and 14b. Once it detects a movement toward an adjacent cell, it interrupts the data transmission and transmits a switching request for a CS switching to a controller 13. When there is a CS switching response from the controller, the handy terminal cuts a radio connection to the communicating radio base station 14a and establishes the radio connection to the radio base station 14b to cover the cell of the movement destination. The handy terminal transmits only transmission-incomplete data to the radio base stations which have established the radio connection newly. COPYRIGHT: (C)2006,JPO&NCIPI
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