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QoS-oriented resource allocation for video traffic in the wireless Internet

The next generation wireless networks need to support video traffic. A major challenge in video services over wireless networks is quality of service (QoS) provisioning. We propose a cross-layer protocol stack architecture for wireless video transmission. In the cross-layer architecture, the MPEG4 compression layer provides the lower link layer with the video compression information. Using this information, a dynamic-weight generalized processor sharing (DWGPS) discipline is proposed for the link layer resource allocation which tries to provide the video compression layer with an acceptable video quality. The proposed DWGPS can achieve lower computational complexity and smaller signaling overhead than previous packet-based GPS implementations. Simulations demonstrate that DWGPS can improve the received video quality as compared with previous work.