A QoS enhanced hybrid SR-ARQ for mobile video communications
S. Wang, Harold Zheng, John A. Copeland · 2002
A hybrid QoS aware SR-ARQ (HQSR-ARQ) is proposed to increase the network throughput for video delivery in a bandwidth limited and error prone wireless mobile environment with certain deterministic guarantees. HQSR-ARQ balanced the pros and the cons of the conventional SR-ARQ and FEC for error control. It also utilized the layer property of MPEG to provide more network resources for important data sections within a video stream. Comprehensive computer simulations were used to compare the performance of HQSR-ARQ with a conventional SR-ARQ and the original QSR-ARQ in terms of the same QoS matrix. The results demonstrated the effectiveness and performance improvement of HQSR-ARQ.