Media services must ensure an enhanced user’s perceived quality during content playback to attract and retain audiences, especially while the streams are distributed remotely via networks. Thus, media streaming services rely heavily on good and predictable network performance when delivered to a large number of people. Furthermore, as the quality of media content gets high, the network performance demands are also increasing, and meeting them is challenging. Network functions devoted to improving media streaming services become essential to cope with the high dynamics of network performance and user mobility. Furthermore, new networking paradigms and architectures under the 5G networks umbrella are bringing new possibilities to deploy smart network functions, which monitor the media streaming services through live and objective metrics and boost them in real-time. This survey overviews the state-of-the-art technologies and solutions proposed to apply new network functions for enhancing media streaming.

媒体服务必须确保在内容播放期间增强用户的感知质量以吸引和留住观众，尤其是在通过网络远程分发流时。因此，流媒体服务在交付给大量用户时严重依赖于良好且可预测的网络性能。此外，随着媒体内容质量的提高，对网络性能的要求也越来越高，满足这些要求具有挑战性。致力于改进媒体流服务的网络功能对于应对网络性能和用户移动性的高度动态变得至关重要。此外，5G 网络保护下的新网络范式和架构为部署智能网络功能带来了新的可能性，它通过实时和客观的指标监控媒体流服务，并实时提升它们。该调查概述了为应用新的网络功能来增强媒体流而提出的最先进的技术和解决方案。