STUDY AND IMPROVEMENT OF THE QUALITY OF SERVICE OF A VIDEO STREAMING BY THE HEVC CODEC IN AD-HOC NETWORKS.

Abstract

Video transmission over all types of networks is a field that has been growing steadily in recent years. Today, improvements in network properties with greater efficiency of video codecs and increased processing and storage capacity of all types of devices contribute to making video streaming possible. Uncompressed digital videos contain large amounts of data. This is why video codecs play an important role, as they can compress video sequences and instantly transmit the video, through the transmission channels, especially in mobile networks, wireless networks, and vehicular networks or Vehicular ad-hoc Networks (VANET) in English, which are in the short term the most viable application example of ad-hoc networks. However, this solution also presents limitations mainly related to the band and problems related to the transmission, namely packet losses, noise, etc.

The objective of this thesis is to study and evaluate the performance of the new and emerging HEVC (High-Efficiency Video Coding) video coding standard in the context of ad-hoc networks. This contribution aims to study the impact of delay, jitter, packet loss, and bandwidth on the Quality of Service (QoS). The focus will be on the analysis of the impact of video content on the Quality of Experience (QoE) as well as the proposal and evaluation of cryptography and coding techniques allowing better security of the information and the physical layer. The candidate is called upon to propose adequate transmission techniques that ensure an acceptable quality of perception with an optimization of the resources available through the network in question. Tests, and if necessary practical implementations, will also be possible