QoE-Based Content Distribution for Adaptive OTT Bitrate Allocation
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Solution Overview
Problem
Existing Over-The-Top (OTT) services face challenges in managing quality of service (QoS) and optimizing network resource utilization due to the unmanaged nature of networks like the Internet, particularly when using http streaming protocols.
Innovation Solution
A method and entity for distributing audiovisual services that determine a maximum transmission rate for a first service based on reception performance indices derived from telemetry data, adjusting this rate dynamically to ensure high-quality delivery of a second service by managing bandwidth allocation between services at a network user point.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If congestion prevention techniques are used to reject less important traffic during network congestion, then network resource protection is improved, but quality of service for video streams deteriorates
Solution Approach 1:
The system implements feedback mechanisms by monitoring network conditions and video stream performance metrics, then dynamically adjusting transmission parameters. The network device receives feedback about network status and adjusts the bitrate or resolution of video content in real-time to maintain quality of service while protecting network resources during congestion.
Solution Approach 2:
The patent applies dynamics by making the transmission bitrate adaptive rather than static. The system continuously adjusts video stream parameters based on current network conditions, transforming the rigid congestion control approach into a flexible system that can maintain quality of service while responding to changing network capacity.
2Reliability
If priority assignment techniques are used for different data flows, then important traffic protection is improved, but network resource utilization deteriorates
Solution Approach 1:
The system applies local quality by differentiating treatment for different video quality components rather than applying uniform priority rules. Different parts of the video stream (e.g., base layer vs. enhancement layers, or different resolution components) receive different levels of protection and resource allocation, allowing important traffic to be protected while still utilizing available network resources efficiently for less critical content.
Data Source
AI summary
A method for distributing, by a content distribution device and by a communication network, at least one audiovisual service to a user terminal associated with a network user point. The method including the steps of: transmitting, to said network user point, at least a first service and a second service, said second service comprising an audiovisual service intended for the fruition while it is transmitted to the network user point; determining a reception performance index relating to said network user point based on telemetry data; determining a maximum transmission rate for said first service based on said reception performance index; in which transmitting comprises transmitting, by said content distribution device, said first service at a transmission rate not higher than said maximum bitrate.