Subjective quality presumption manner, the subjective quality presumption device, through fluctuation absorption approved time presumption manner, and the fluctuation absorption approved time

摘要

PROBLEM TO BE SOLVED: To provide a subjective quality estimate device that can estimate subjective quality with high accuracy on the basis of a network quality without conducting an actual subjective quality evaluation.;SOLUTION: An ineffective packet decision section 11 decides a loss packet number not reached a receiver side and delay arrival packets whose packet arrival interval exceeds a fluctuation absorption permission time of a real time system application as invalid packets on the basis of performance information 9A for each packet, an invalid packet rate calculation section 12 calculates a rate of the invalid packet number to all transmission packet number that is, the invalid packet rate on the basis of the decision result, and an evaluation estimate section 13 references an estimate model 14 prepared in advance and denoting a reference between the invalid packet rate and a MOS(Mean Opinion Source) value on the basis of the ineffective packet rate to estimate and output a corresponding MOS value.;COPYRIGHT: (C)2002,JPO