Video loss prediction model in wireless networks

• DOI: 10.1371/journal.pone.0212407
• Publication Date: 2019-03-06T18:52:35Z
• Authors: João Victor Costa...; Edemir Marcus Car...; Bruno Souza Lyra ...; Fabrício José Bri...; Miércio Cardoso d...; Evaldo Gonçalves ...
• Keywords: Computer Communication Networks; Science; Q; R; Video Recording; 0202 electrical engineering, electronic engineering, information engineering; Medicine; 02 engineering and technology; Models, Theoretical; Wireless Technology; Algorithms; Research Article

This work discusses video communications over wireless networks (IEEE 802.11ac standard). The videos are in three different resolutions: 720p, 1080p, and 2160p. It is essential to study the performance of these media in access technologies to enhance the current coding and communications techniques. This study sets out a video quality prediction model that includes the different resolutions that are based on wireless network terms and conditions, an approach that has not previously been adopted in the literature. The model involves obtaining Service and Experience Quality Metrics, such as PSNR (Peak Signal-to-Noise Ratio) and packet loss. This article outlines a methodology and mathematical model for video quality loss in the wireless network from simulated data and its accuracy is ensured through the use of performance metrics (RMSE and Standard Deviation). The methodology is based on two mathematical functions, (logarithmic and exponential), and their parameters are defined by linear regression. The model obtained RMSE values and standard deviation of 2.32 dB and 2.2 dB for the predicted values, respectively. The results should lead to a CODEC (Coder-Decoder) improvement and contribute to a better wireless networks design.