Application driven, AMC-based cross-layer optimization for video service over LTE

In this paper, we propose a cross-layer optimization scheme in which the application layer controls the medium access network (MAC) and physical (PHY) layers in long-term evolution (LTE, from 3rd generation partnership project [3GPP] release 8) to maximize the quality of video streaming services. We demonstrate how to optimize quality using the equi-signal-to-noise ratio (equi-SNR) from the lower layer and the equi-peak signal-to-noise ratio (equi-PSNR) from the upper layer in the two-dimensional domain, consisting of a bit rate (R) and packet loss ratio (PLR). The proposed approach outperforms the conventional approach, which operates regardless of the application-specific requirements for quality of service (QoS) and quality of experience (QoE) in PHY.