| 摘要 |
PROBLEM TO BE SOLVED: To provide a point-multipoint communication system which can ensure proper communication, even when an information signal is transmitted, in an burst manner. SOLUTION: A slave device which is about to transmit signals stores the signals temporarily and counts the amount of information of the stored signals. A main device designates each slave device to report the amount of information. A slave device designated from the main device reports the amount of information to the main device, in accordance with the designation. Upon receiving a report from each slave device, the main device determines the amount permitted of transmission for each slave device, below a specific maximum value based on the amount of information thus reported, and designates each slave device, to transmit signals based on the amount for permitting transmission thus determined. Upon receiving a designation from the main device, the slave device transmits the stored signals to the main device, in accordance with the designation. Furthermore, interval that designates reporting the amount of information is dynamically updated. COPYRIGHT: (C)2009,JPO&INPIT
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