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2007
IEEE

Low-Latency Error Control of H.264 Using SP-Frames and Streaming Agent Over Wireless Networks

10 years 2 months ago
Low-Latency Error Control of H.264 Using SP-Frames and Streaming Agent Over Wireless Networks
Abstract—A key challenge to low-latency wireless video streaming, where persistent retransmission is impractical, is error control. While SP-frame adaptation of H.264 has potential to mitigate error propagation, streaming server is often either situated too far to react in a timely fashion to client feedbacks, or too computationally constrained to perform the necessarily complex adaptation simultaneously for multiple clients in different sessions. In this paper, we present an innovative error control mechanism using SP-frames of H.264 and performed by a network intermediary for video streaming to a wireless client. Using an intermediary means it is more responsive to client feedbacks due to its close proximity, and it can offload computation complexity from the streaming server. Simulation shows that about 2 dB improvement in PSNR is achievable for video streaming with low latency requirements over traditional schemes using I and P-frames only.
Gene Cheung, Wai-tian Tan
Added 02 Jun 2010
Updated 02 Jun 2010
Type Conference
Year 2007
Where ICC
Authors Gene Cheung, Wai-tian Tan
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