Title :
CHARQ: Cooperative Hybrid ARQ for wireless video streaming
Author :
Lu, Mei-Hsuan ; Steenkiste, Peter ; Chen, Tsuhan
Author_Institution :
Dept. of Electr. & Comput. Eng., Carnegie Mellon Univ., Pittsburgh, PA, USA
fDate :
June 28 2009-July 3 2009
Abstract :
Forward error correction (FEC) coding and automatic repeat request (ARQ) are two commonly used techniques to tackle packet erasures in wireless video streaming. To preserve flexibility while reducing end-to-end latency, hybrid ARQ (HARQ) has been proposed as an alternative that combines the advantages of FEC and ARQ. This paper presents cooperative hybrid ARQ (CHARQ) that can further boost wireless video streaming quality. CHARQ takes advantage of the fact that, in the wireless environment, broadcast is free (from the sender´s point of view) and that errors are location dependent so an intermediate proxy that overhears the source´s transmission may transmit on behalf of the source to increase throughput efficiency. Simulation results show improved performance with the aid of cooperative proxies.
Keywords :
automatic repeat request; error correction codes; forward error correction; video coding; video streaming; wireless channels; CHARQ; FEC; cooperative hybrid automatic repeat request technique; forward error correction coding; source transmission; wireless channel; wireless video streaming; Automatic repeat request; Bandwidth; Broadcasting; Decoding; Delay; Forward error correction; Multimedia communication; Streaming media; Throughput; Transmitters; ARQ; cooperative hybrid ARQ; forward error correction; hybrid ARQ; wireless video streaming;
Conference_Titel :
Multimedia and Expo, 2009. ICME 2009. IEEE International Conference on
Conference_Location :
New York, NY
Print_ISBN :
978-1-4244-4290-4
Electronic_ISBN :
1945-7871
DOI :
10.1109/ICME.2009.5202603