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Channel Estimation and Prediction in Cross-Layer Design Using Side-information

크로스레이어 디자인에서 사이드 인포메이션을 활용한 채널 추정 및 예측

  • Cho, Yong-Ju (Broadcasting & Telecommunications Media Research Dept.) ;
  • Cha, Ji-Hun (Broadcasting & Telecommunications Media Research Dept.) ;
  • Kim, Wook-Joong (School of Broadcasting Media, Woosong University)
  • 조용주 (한국전자통신연구원 방통융합미디어연구부) ;
  • 차지훈 (한국전자통신연구원 방통융합미디어연구부) ;
  • 김욱중 (우송대학교 방송미디어학부)
  • Received : 2011.07.18
  • Accepted : 2011.08.19
  • Published : 2011.09.30

Abstract

The objective of MPEG Media Transport (MMT), which is on going standard, is to develop efficient delivery of media over packet based networks in an adaptive, progressive, download/streaming fashion over various IP based networks, including terrestrial, satellite and cable broadcast networks. In this paper we introduce utilization of signal strength information based on Cross Layer Design(CLD) to efficient multimedia delivery over wireless network in which in practice the wireless conditions can vary significantly. Many recent studies have shown that a significant improvement in wireless video throughput can be achieved by utilizing signal strength information on CLD [1][2]. Despite of its usefulness, however, it was difficult to employ signal strength information in rate adaptation applications due to different representation of signal strength information for each underlying wireless network. To that end, we proposed syntax and semantics of signal strength information in such a way that the information can be interpreted in the unified way. The proposed signal strength information was proposed for the MMT standardization.

MPEG에서 진행 중인 MPEG Media Transport(MMT) 표준화는 IP기반 방송통신융합망에서 효과적인 멀티미디어 전송을 목적으로 하고 있다. 본 고에서는 MMT 제안 기술로서, 유선망에 비해 채널의 변화가 많은 무선망에서 효과적인 멀티미디어 전송을 위해 제안된 크로스레이어 디자인(Cross Layer Design-CLD)에서의 신호세기(signal strength information) 활용 방법을 소개한다. 무선환경에서 신호세기를 활용하면 매우 효율적인 멀티미디어 전송이 가능함은 관련 연구 논문[1]-[5]을 통해 증명되었다. 하지만, 무선채널의 특성상 서로 다른 신호세기의 범위를 사용함으로써 신호세기 정보의 유용성에도 불구하고 레이트 어댑테이션 애플리케이션에서 활용하는데 제한이 있어왔다. 따라서 본 논문에서는 MMT 표준화 기술 기고로 제안된 무선채널 신호세기 정보의 범위를 표준화된 형식으로 활용하는 방법에 대하여 기술한다.

Keywords

References

  1. Y. Cho, S. Karande, K Misra, H. Radha, J. Yoo, J. Hong, "On Channel Capacity Estimation and Prediction for Rate Adaptive Wireless Video," IEEE Trans. on Multimedia, vol. 10, Nov. 2008. https://doi.org/10.1109/TMM.2008.2004901
  2. Y. Cho, Hayder Radha, Jungil Seo, Jungwon Kang and Jinwoo Hong, "Multi-hop Rate Adaptive Wireless Scalable Video Using Syndrome-Based Partial Decoding," ETRI Journal, vol.32, no.2, Apr. 2010.
  3. S. Karande and H. Radha, "Hybrid Erasure-Error Protocols for Wireless Video," IEEE Transactions on Multimedia, Feb. 2007. https://doi.org/10.1109/TMM.2006.886280
  4. L. Larzon, M. Degermark, and S. Pink, "UDP Lite for Real Time Multimedia Applications," IEEE International Conference of Communications (ICC), Vancouver,June1999.
  5. A. Singh, A. Konrad, A. D. Joseph, "Performance Evaluation of UDP Lite for Cellular Video," NOSSDAV, 2001.
  6. Y. Cho, J. Cha, "Utilization of signal strength information from MAC layer for MMT," MPEG m19388, Jan 2011.
  7. Y. Cho, J. Cha, "Updated MMT CfP response," MPEG m20025, Mar 2011.