VoIP 통화 품질 평가를 위한 개선된 E-모델 = Advanced E-Model for VoIP Call Quality Assessment

다국어 초록 (Multilingual Abstract)

In this paper, an advanced E-Model was proposed in order to overcome disadvantages of conventional method. A new model makes the accurate VoIP call quality assessment possible by applying the burst packet loss and recency effect. In order to assess the performance of this advanced E-Model, we gained the estimated MOS value from NR(Network R) value and UR(User R) value resulted from the burst packet loss values by Gilbert Model. Through simulations and comparisons with conventional models such as MOS, PESQ, and E-Model, we reach a conclusion that advanced E-Model is more accurate and reliable method than conventional models.

국문 초록 (Abstract)

본 논문에서는 기존의 문제점들을 극복하기 위한 개선된 E-Model을 제안하였다. 새로운 모델은 버스트 패킷손실과 최신효과를 적용하여 VoIP 품질 측정의 정확도를 높일 수 있다. 개선된 E-Model은 길버트 모델에 의해 생성된 버스트 패킷 손실에 따라 NR(Network R) 값과 UR(User R) 값을 측정한다. 기존 모델들인 MOS, PESQ, E-Model과 비교하여 시뮬레이션을 수행하였으며, 실험 결과 개선된 E-Model이 기존 모델들보다 정확하고 신뢰성 있음이 증명되었다.

참고문헌 (Reference)

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3 "The Relationship between Instantaneous and Overall Subjective Speech Quality for Time-varing Quality Speech Sequences" 2000.

4 "Recency Effect in Anterograde Amnesia" 2002.

5 "Adaptive FEC based Error Control for Interactive Audio in the Internet" 1999.

6 "A Study on the Application of an Amr Speech Codec for VoIP" 2001.