Adaptive FMO Map Generation using Cross Video Coding-MAC Layer Consideration
Recent researches in video transmission over heterogeneous networks move toward cross-layer design to realize optimal video quality. In this work, we investigate the cross layer approach between H.264 video coding layer and IEEE 802.11e Medium Access Control (MAC) layer, how to improve error resiliency of H.264 video using Flexible Macroblock Ordering (FMO), and how to reduce packet dropping rate at MAC layer. We propose an adaptive FMO map generation to separate high and low important macroblocks to different priority queues based on the overflow state of MAC layer queues. The arrival rate of packets to queues is thus changed to reduce queue overflow. It results in decrease of packet dropping rates at queues. Experimental results show that using the proposed scheme can reduce the packet drop rate at the queues resulting in the reduction of packet loss rate and the improvement of the average PSNR.
Tien Huu Vu Supavadee Aramvith
Department of Electrical Engineering Chulalongkorn University Bangkok, Thailand Department of Electrical EngineeringChulalongkorn UniversityBangkok, Thailand
国际会议
2011亚太信号与信息处理协会年度峰会(APSIPAASC 2011)
西安
英文
1-5
2011-10-18（万方平台首次上网日期，不代表论文的发表时间）