delay variation measuring device, delay variation measurement method and delay variation measurement program

摘要

PROBLEM TO BE SOLVED: To secure a real-time property while eliminating the need of long time, when calculating delay fluctuation indicating a degree of dispersion in delay time, regarding transmission of sent and received packets.;SOLUTION: A delay fluctuation measuring apparatus 1 comprises: a delay time measuring section 14 for measuring a delay time of transmission of a packet; a delay time table updating section 16 for registering the delay time of transmission of the packet measured by the delay time measuring section 14 to a delay time table in which a delay time of transmission of a sent/received packet is registered, in such a manner that a registration order becomes an ascending-order or a descending-order, and for updating the delay time table; and a delay time fluctuation calculation section 17 for reading an upper limit value and a lower limit value of a range of dispersion of the delay times regarding the transmission of the sent/received packets from the updated delay time table updated by the delay time table updating section 16, calculating a difference between the upper limit value and the lower limit value, and calculating delay fluctuation indicating a degree of the dispersion of the delay times of the transmission of the sent/received packets.;COPYRIGHT: (C)2014,JPO&INPIT