MISSING PACKET MEASUREMENT DEVICE AND ERROR MEASUREMENT DEVICE USING THE SAME

摘要

There is provided a missing packet measurement device capable of preventing erroneous decision that a packet is missing when packets transmitted via the same transmission path are received in the order different from the transmission order. The missing packet measurement device (8) measures a packet lost on the transmission path by periodically attaching a sequence number to packets and receiving the packets transmitted in parallel via a plurality of transmission paths. The missing packet measurement device (8) includes a counter unit (11) for counting the number of receptions of the packet having a sequence number for each sequence number and a missing packet judgment unit (12) for judging whether each packet is missing according to the number of receptions counted by the counter unit (11). The missing packet judgment unit (12) compares the value of the maximum number of receptions subtracted by the minimum number receptions counted by the counter unit (11) to a predetermined threshold value, thereby judging whether each packet is missing.