Abstract
The H.264/SVC was developed as an extension of H.264/AVC; the latest scalable H.264 codec (SVC) provides combined temporal, quality and spatial scalability. This paper provides theoretical concepts of these different scalability approaches and analysis of their performances when video are transmitted over IEEE 802.11e WLANs. In order to validate our works, we have used an NS2 simulator environment based on SVEF (Scalable Video-Streaming Evaluation Framework). We have suggested evaluating H.264/SVC video coding over wireless network architecture, specifically when DCF or EDCA access mechanisms are used. In our analysis we have focused on Spatial, Quality, and Temporal video scalability approaches. The obtained results show that temporal scalability clearly outperforms other scalability category.