| 摘要 |
PROBLEM TO BE SOLVED: To reduce packet lost in handing down. SOLUTION: This device is provided with a radio unit capable of data communication via a plurality of radio communication systems, and a control unit for transmitting a signal for lowering continuously transmittable data amount to be transmitted from a transmitter side, when data communication is switched from one system to a system having the maximum throughput lower than that of the one system during data communication via the one system among the plurality of radio communication systems. COPYRIGHT: (C)2006,JPO&NCIPI
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