| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for performing synchronous communication with frequency≤125μs. SOLUTION: Processing is performed by the following procedures. (1) Time from cycle start to termination of isochronous packet transfer is calculated. (2) A set of the time to be required from the cycle start to the termination of the isochronous packet transfer, acquired band width and an acquired channel is stored whenever the present node acquires the band width and the channel. (3) An IRM acquires band width to the end of one requested cycle time. (4) Reaching to the required cycle time is discriminated. (5) A channel different from the one acquired in the previous time is acquired as the one for the next cycle. (6) Only the number of different channels to be transmitted within 125μs are acquired. (7) The isochronous packet is transmitted by delaying it from the cycle start. COPYRIGHT: (C)2005,JPO&NCIPI
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