Proceedings of the Korean Society of Broadcast Engineers Conference (한국방송∙미디어공학회:학술대회논문집)

The Korean Institute of Broadcast and Media Engineers (한국방송∙미디어공학회)
권호 표지

NETWORK-ADAPTIVE ERROR CONTROL FOR VIDEO STREAMING OVER WIRELESS MULTI-HOP NETWORKS

  • Bae, Jung-Tae (Networked Media Lab., Department of Information and Communications, Gwangju Institute of Science and Technology (GIST)) ;
  • Kim, Jong-Won (Networked Media Lab., Department of Information and Communications, Gwangju Institute of Science and Technology (GIST))
  • Published : 2009.01.12
Download PDF
⟨ Previous Next ⟩

Abstract

Multi-hop wireless mesh networks (WMNs) suffer from significant packet losses due to insufficient available bandwidth and high channel error probability. To conquer packet losses, end-to-end (E2E) error control schemes have been proposed. However, in WMNs, E2E error control schemes are not effective in adapting to the time-varying network condition due to large delay. Thus, in this paper, we propose a network-adaptive error control for video streaming over WMNs that flexibly operates E2E and hop-by-hop (HbH) error control according to network condition. Moreover, to provide lightweight support at intermediate nodes for HbH error control, we use path-partition-based adaptation. To verify the proposed scheme, we implement it and evaluate its transport performance through MPEG-2 video streaming over a real IEEE 802.11a-based WMN testbed.

Keywords