A Priority-based Differentiated Streaming scheme to guarantee the media quality in mobile WiMAX

Mobile WiMAX can provide high-speed wireless access to mobile users. It also supports applications and services with diverse QoS (Quality of Service) requirements. However, it does not guarantee media quality for multimedia streaming services using scalable video coding schemes, because it does not consider essential characteristics of video coding techniques and network congestion. To solve this problem, we propose a new differentiated streaming scheme in mobile WiMAX, called P-DS (Priority-based Differentiated Streaming), which uses the differentiated transmission of media frames according to network congestion and wireless channel status. The proposed P-DS scheme guarantees high quality of multimedia services through video decoding reliability by transmitting differentiated media frames when network congestion and wireless channel errors occur.