Journal of Broadcast Engineering (방송공학회논문지)

The Korean Institute of Broadcast and Media Engineers (한국방송∙미디어공학회)
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Research of QoS Control for Standardization on Real-time Multimedia Service Using MAC/PHY Feedback

MAC/PHY 정보를 이용한 실시간 멀티미디어 서비스의 QoS 제어 방식의 표준화를 위한 연구

  • Received : 2011.06.29
  • Accepted : 2011.09.23
  • Published : 2011.09.30
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Abstract

In this paper, we study QoS(Quality of Service) control protocols and the effect using MAC/PHY parameters of client device in mobile network. We proposes the way of controling the bit-rate by estimating the channel condition of the client with measured MAC/PHY parameters which is sent from the client. With the proposed method, more accurate available bit-rate can be estimated compared to conventional protocol, RTCP(Real-time Transport Control Protocol). The accurate bit-rate estimation can decrease wasted bit-rate and transport delay. In the result of the advantages, the transported video quality can be enhanced. In this paper, we show the effects of enhancement using client's the field data measured in WiMAX.

본 논문에서는 모바일 환경에서 클라이언트의 MAC/PHY 파라미터를 이용하여 QoS(Quality of Service)를 제어하는 프로토콜과 그 효과에 대해 연구한다. 클라이언트는 자신의 MAC/PHY 채널 상황을 측정하여 서버측에 피드백하고 서버는 이를 이용하여 앞으로의 클라이언트의 상황을 예측하고 비트율 제어를 수행하는 방법을 제안한다. 제안 방법을 통해 기존의 RTCP(Real-time Transport Control Protocol)를 이용한 비트율 제어 방법보다 정확하게 가용 비트율을 예측할 수 있다. 정확한 가용 비트율 예측을 통해 비트율 낭비와 전송지연을 감소시키고, 비디오 전송 시 화질을 향상시킬 수 있다. WiMAX 환경에서 실제로 측정된 클라이언트의 CINR(Carrier to Interface Noise Ratio) 데이터를 활용하여 그 효과를 보여준다.

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References

  1. IEEE Standard for Local and metropolitan area networks Part 16: Air Interface for Broadband Wireless Access Systems, Oct. 2004.
  2. K. H. Teo, Z. Tao and J. Zhang, "The mobile broadband WiMAX standard," IEEE Signal Processing Mag., Vol. 24, pp.144-148, Sep.2007. https://doi.org/10.1109/MSP.2007.904740
  3. J. Wang, M. Venkatachalam and Y. Fang, "System Architecture and Cross-Layer Optimization of Video Broadcast over WiMAX", IEEE Journal on Selected Areas in Communications, Vol.25, pp.712-721, May.2007. https://doi.org/10.1109/JSAC.2007.070508
  4. P. Hosein, "Broadcasting VBR traffic in a WiMAX network," Vehicular Technology Conference, 2008. VTC 2008-Fall, IEEE 68th, pp.1-5, Sep.2008. https://doi.org/10.1109/VETECF.2008.417
  5. H. Juan, H. Huang, H. Huang and T. Chiang, "Scalable Video Streaming over Mobile WiMAX," Circuits and Systems, 2007. ISCAS 2007. IEEE International Symposium on, pp.3463-3466, May.2007. https://doi.org/10.1109/ISCAS.2007.378372
  6. S. H. Hong, Y. H. Lee, J. Y. Jung and D. Y. Suh, "A Cross-Layer Approach to Fair Resource Allocation for Multimedia Service in WiMAX", KSII Transactions on Internet and Information Systems, Vol. 4, pp.1006-1022, Dec.2010.
  7. S. Sharangi, R. Krishnamurti and M. Hefeeda, "Energy-Efficient Multicasting of Scalable Video Streams OverWiMAX Networks," IEEE Transactions on Multimedia, pp.102-115, Feb.2011. https://doi.org/10.1109/TMM.2010.2076799
  8. H. S. Kim, H. M. Nam, J. Y. Jeong, S. H. Kim and S. J. Ko, "Measurement Based Channel-Adaptive Video Streaming for Mobile Device over Mobile WiMAX", IEEE Transactions on Consumer Electronics, Vol. 54, pp.171-178, Feb.2008. https://doi.org/10.1109/TCE.2008.4470040
  9. H. S. Kim, E. S. Ryu and Jayant, N. "Channel-Adaptive Video Transmission Using H.264 SVC Over Mobile WiMAX network", 2010 Digest of Technical Papers International Conference on Consumer Electronics, pp.441, Jan. 2010.