IPTV에서 패킷 손실 발생 위치가 QoE에 미치는 영향 분석 = An Impact of Packet Loss Locations on QoE in IPTV Services

국문 초록 (Abstract)

패킷 손실등의 QoS(Quality of Service) 요소가 이용자가 체감하는 품질에 미치는 영향에 대한 많은 기존 연구들이 있었다. 그러나, IPTV 에 있어서는 단순한 패킷 손실 정도 보다는 이러한 패킷 손실이 발생하는 위치에 따라 이용자가 체감하는 품질은 달라질 수 있다. 본 논문에서는 패킷 손실에 의한 프레임의 손상 위치 및 형태가 체감 품질에 미치는 영향을 분석하였다. 실험을 위하여, 국내 IPTV에서 사용되는 영상 규격을 적용하여 실험 영상을 제작하였고, 주관적 품질 평가를 위하여 표준 방식인DSCQS(Double-Stimulus Continuous Quality-Scale method)와 ACR(Absolute Category Rating) 두가지 방법을 적용하였다.

다국어 초록 (Multilingual Abstract)

There have been much of works on the impact of QoS parameters such as packet loss, etc on the user perceived quality. However, the perceived video quality may vary according to the location of packet losses rather than the degree of packet losses in IPTV services. In this paper, we analyzed the impact of packet loss locations and patterns on the user perceived video quality. For the experiment, we made test sequences by applying the domestic standard for IPTV services. And, we used the two international standards such as DSCQS and ACR for the evaluation of subjective quality.

목차 (Table of Contents)

• 요약
• Abstract
• 1. 서론
• 2. 주관적 영상 품질 측정 방법
• 3. 주관적 체감 품질 측정 방법
• 4. 실험 결과
• 5. 결론
• 참고문헌

참고문헌 (Reference)

1 ITU-T Rec, "Subjective video quality assessment methods for multimedia applications"

2 A. Takahashi, "Standardization Activities in the ITU for a QoE Assessment of IPTV" 46 (46): 78-84, 2008

3 K.D. Singh, "Quality of Experience Estimation Using Frame Loss Pattern and Video Encoding Characteristics in DVB-H Network" 2010

4 ITU-R Rec, "Methodology for the Subjective Assessment of the Quality of Television Pictures"

5 M. Bellafkih, "MOS Evaluation for VoD Service in an IMS Network" 2010

6 M. Venkatraman, "Inferring Video QoE in Real Time" 25 (25): 4-13, 2011

7 Q. Dai, "Impact of Packet Loss on the Perceived Video Quality" 2010

8 정현호, "IPTV 네트워크 품질지표에 따른 고객 체감품질 상관관계 연구" 13 (13): 55-65, 2010

9 V. Menkovski, "Estimations and Remidies for Quality of Experience in Multimedia Streaming" 11-15, 2010

10 R. Shumeli, "Effects of an Encoding Scheme on Perceived Video Quality Transmitted Over Lossy Internet Protocol Networks" 54 (54): 628-640, 2008

11 M. Venkataraman, "Case Study of Internet Links: What degrades Video QoE" 2010

12 H. Kim, "A Study on a QoS/QoE Correlation Model for QoE Evaluation on IPTV Service" 2010