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

Korea Institute of Electronic Communication Science (한국전자통신학회)
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The analysis of the relationship between the throughput and the wireless channel conditions of a LTE mobile communication system

LTE 이동통신 시스템의 처리율과 무선 채널 상태와의 상관관계 분석

  • 김범준 (계명대학교 전자공학과)
  • Received : 2014.11.15
  • Accepted : 2015.02.09
  • Published : 2015.02.28
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Abstract

As a representative system of the 4th generation mobile communication system, LTE provides much higher transmission rate than the former ones. Considering the varying property that a wireless environment shows, the transmission rate is influenced very deeply by the wireless channel conditions. The transmission rate is one of the most important attributes that has a primary effect on user's satisfaction of the service provided through the LTE system. After we have selected a few metrics that indicate the wireless channel quality, therefore, we have conducted a measurement for the metrics over the real commercial LTE system. By analyzing the measured results, we have found that the channel quality affect more on the transmission rate as the channel quality becomes poorer.

대표적인 4세대 이동통신 시스템으로서 LTE는 과거 이동통신 시스템에 비하여 훨씬 더 높은 전송 속도를 제공한다. 그러나 무선 환경의 특성 상 LTE가 제공하는 전송 속도는 무선 채널의 상태에 따라서 큰 영향을 받을 수 있다. LTE 시스템의 무선 접속을 통해서 제공되는 대부분의 서비스에 대한 사용자의 만족도는 전송속도에 일차적인 영향을 받게 된다. 따라서 본 논문에서는 무선 채널의 상태를 대표하는 다양한 품질 지표를 선정하고 이들에 대한 실체 측정을 실시하여 각 품질 지표의 변화에 대한 LTE 시스템의 전송 속도의 변화를 관찰하였다. 그 결과 채널의 상태가 나빠질수록 신호의 세기가 아닌 신호의 품질이 LTE 시스템이 제공하는 전송 속도에 밀접한 영향을 미친다는 사실을 알 수 있었다.

Keywords

References

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