In this paper

an adaptive link-level Hybrid automatic repeat request (ARQ) mechanism was proposed for wireless media streaming

in the hope that the media could be played on receivers with high quality. It allocate the optimal HARQ schemes for different traffic streaming

according to channel condition or differentiated QoS requirements dynamically. The mechanism

based on cross-layer optimization design

predicts the packet loss rate using the enhanced GM (1

1) model

and adjusts the ARQ parameter . Besides

an adaptive FEC at the application layer was used to adjust the sending rate of MPEG video frame adaptively and to allocate the network bandwidth resource between the MPEG video source data and the redundant data dynamically. Both the analysis and simulation results demonstrate that the proposed mechanism can significantly improve quality of media streaming

in terms of playable frame rate

reliability and real-time performance on the receiving side.