With the popularity of wireless access and video applications

wireless video transmission is bringing more attention. In most papers

the ideas of cross-layer optimization and unequal protection were adopted. To improve transmission quality of wireless video streams

a novel scheduling algorithm which integrates priorities of video frame with “relative queuing delay” and is suitable for any coding algorithm with limited priorities under IEEE 802.11e is proposed in this paper. Simulation results show that average peak SNR of proposed algorithm is much higher than those of EDCA and existing improving scheme.