Distortion-Based Slice Level Prioritization for Real-Time Video over QoS-Enabled Wireless Networks

Abstract EN

This paper presents a prioritization scheme based on an analysis of the impact on objective video quality when dropping individual slices from coded video streams.

It is shown that giving higher-priority classified packets preference in accessing the wireless media results in considerable quality gain (up to 3 dB in tests) over the case when no prioritization is applied.

The proposed scheme is demonstrated for an IEEE 802.11e quality-of-service- (QoS-) enabled wireless LAN.

Though more complex prioritization systems are possible, the proposed scheme is crafted for mobile interactive or user-to-user video services and is simply implemented within the Main or the Baseline profiles of an H.264 codec.