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Delay quantitative allotment expedient, the round trip time measurement expedient which measures the round trip time which is difference of transmitted time of the specified signal which method of delay
Delay quantitative allotment expedient, the round trip time measurement expedient which measures the round trip time which is difference of transmitted time of the specified signal which method of delay
In order to calculate an appropriate delay amount of a communication apparatus, delay amount allocating means is provided with round-trip time measurement means which measures a round-trip time which is a difference between a transmission time when a first communication apparatus sends a predetermined signal to each of second communication apparatuses and a reception time when a first communication apparatus receives a response to the predetermined signal, round-trip time comparison means which determines whether a difference between a round-trip time at the present time and a round-trip time in the past time falls within a predetermined range on each of the second communication apparatuses, and a delay amount calculation means which selects a representative value from numerical values between a maximum value and a minimum value of the differences and outputs as a delay amount which is a sum of the representative value and a predetermined value in the case that each of the differences falls within the predetermined range.
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