대한전자공학회:학술대회논문집 (Proceedings of the IEEK Conference)

대한전자공학회 (The Institute of Electronics and Information Engineers)
권호 표지

무선 이동통신 망에서의 효과적인 영상 통신을 위한 전송 신호 세기 기반의 비트율 제어 방법 연구

A study on the Efficient Rate Control Scheme Based on Received Power Level for Mobile Multimedia Streaming System

  • 정재윤 (고려대학교 공과대학 전자공학과) ;
  • ;
  • ;
  • 김혜수 (고려대학교 공과대학 전자공학과) ;
  • 고성제 (고려대학교 공과대학 전자공학과)
  • Jeong, Jae-Yun (Electronic and Computer Engineering Department Korea University) ;
  • Ha, Le Thanh (Electronic and Computer Engineering Department Korea University) ;
  • Duong, Dinh Trieu (Electronic and Computer Engineering Department Korea University) ;
  • Kim, Hye-Soo (Electronic and Computer Engineering Department Korea University) ;
  • Ko, Sung-Jea (Electronic and Computer Engineering Department Korea University)
  • 발행 : 2006.06.21
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초록

In this paper, we propose an efficient rate control scheme based on the received power level to overcome a quality degradation of video under time varying channel condition caused by the movement of mobile devices. First, we statistically obtain the relation between the PLR and the received power level. With this information and the sequences of received power level, we calculate the transition probability for the Markov Channel Model. Then, with using Markov chain rule, we obtain the probability where the channel condition remains in a good state and finally find the efficient target bit rate by multiplying it by the offered bandwidth when the network access has begun. We use TMN8 to adjust the bit rate to our proposed outcome. Experimental results show that the proposed method can efficiently enhance the video quality and provide better PSNR performance than with only using TMN8 rate control method.

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