Title :
RTCP-based frame-synchronized feedback control for IP-video communications over multipath fading channels
Author :
Gharavi, H. ; Ban, K. ; Cambiotis, J.
Author_Institution :
Nat. Inst. of Stand. & Technol., Gaithersburg, MD, USA
Abstract :
This paper presents a packet-loss feedback tracking scheme for the transmission of video signals over mobile channels. The proposed feedback scheme is based on the real time transport control protocol (RTCP), which is designed to provide an end-to-end feedback assessment of transmitted packets on a frame-by-frame basis (video frame). In addition, the frame synchronized RTCP-based feedback scheme is designed to take care of losses of RTCP packets due to bad channels. The video encoder, upon receiving its feedback report, can identify the exact location of the missing packets in the transmitted video frame. The feedback scheme is then applied to transport H.264/RTP/UDP/IP packets in real-time. A packet-loss compensation strategy has been used to assess the quality of the received signal under multipath fading channel conditions.
Keywords :
IEEE standards; IP networks; code standards; fading channels; mobile radio; multimedia communication; multipath channels; telecommunication control; transport protocols; video coding; wireless LAN; H.264; IEEE 802.11 standard; IP; IP-video communication; UDP; feedback assessment; feedback control; frame-synchronized feedback control; mobile channel; multipath fading channel condition; packet loss compensation strategy; packet transport; packet-loss feedback tracking scheme; real time transport control protocol; received signal quality; video encoder; video frame; video signal transmission; video streaming; wireless multimedia communication; Automatic repeat request; Delay; Fading; Feedback control; Jitter; Mobile communication; Protection; Protocols; Streaming media; Videoconference;
Conference_Titel :
Communications, 2004 IEEE International Conference on
Print_ISBN :
0-7803-8533-0
DOI :
10.1109/ICC.2004.1312763
