한국전자통신학회논문지 (The Journal of the Korea institute of electronic communication sciences)

한국전자통신학회 (Korea Institute of Electronic Communication Science)
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와이브로를 통한 음성서비스의 품질과 무선 채널 품질과의 통계적 상관관계 분석

The analysis of the relation between the quality of voice service and the quality of the wireless channel over a WiBro network

  • 김범준 (계명대학교 전자공학과)
  • 투고 : 2014.04.01
  • 심사 : 2014.06.16
  • 발행 : 2014.06.30
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초록

본 논문은 사용자 체감 품질에 관한 것으로서 특히 주관적인 측면을 포함하는 사용자 체감 품질을 어떻게 객관적인 방법으로 평가할 수 있는지에 관한 것이다. 본 논문은 현재 상용화되어 사용되고 있는 와이브로 무선 접속 인터페이스를 통해서 음성 서비스가 제공되는 경우에 다양한 품질 지표들의 값의 변화를 실제 측정하고 이들 간의 상관관계를 분석하여 음성 서비스의 사용자 체감 품질을 객관적으로 평가하고자 한다. 분석결과 와이브로를 통한 음성 서비스의 사용자 품질은 네트워크 계층에서 측정되는 전송 지연과 높은 상관관계를 보였고 다시 전송 지연은 무선 채널의 RSSI와 높은 상관관계를 가진다는 점을 확인할 수 있었다.

This paper addresses quality of experience(QoE) and how to measure and evaluate QoE including its subjective aspects. Adopting the real measurements on the field, a various quality metric have been measured for VoIP(voice over IP) service provided through a wireless interface of WiBro(Wireless Broadband). By analyzing the measured values and correlation between the metrics, we attempt to find a method to evaluate QoE of the VoIP service in a objective way. As a result, it has been shown that QoE of the VoIP service through WiBro network has close relation to the packet-level end-to-end delay, and the delay has close relation to received signal strength indicator(RSSI).

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참고문헌

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