Bitrate Variation Signaling for Encrypted Media Streaming
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Solution Overview
Problem
Network operators face challenges in providing Quality of Service (QoS) and Quality of Experience (QoE) enhancements due to end-to-end encryption, which prevents data traffic classification and intelligent transmission resource distribution in communications networks.
Innovation Solution
A user terminal and network component system that determines bitrate variation information for variable bitrate encoded media data streams and triggers dynamic distribution of transmission resources among multiple user terminals, allowing for efficient QoE management even in end-to-end encrypted scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If end-to-end encryption is used for data traffic, then user privacy and security are improved, but network operators lose the ability to classify data traffic and provide QoS enhancements
Solution Approach 1:
The patent extracts the bitrate variation information from the encrypted media data stream by utilizing metadata or signaling data that accompanies the stream. This allows the network to obtain classification information without decrypting the actual media data, thus maintaining privacy while enabling traffic differentiation.
Solution Approach 2:
The patent introduces an intermediary mechanism where the user terminal provides bitrate variation information to the network component through a controlled interface. This intermediary data exchange enables the network to make QoS decisions without direct inspection of encrypted traffic, resolving the contradiction between encryption and traffic classification.
2Productivity
If packet filters and DPI are applied for traffic classification, then transmission resource distribution is improved, but system complexity and processing requirements increase
Solution Approach 1:
Instead of the network performing complex DPI and packet filtering to classify traffic, the patent inverts the approach by having the user terminal provide bitrate variation information to the network. This reverses the traditional paradigm and significantly reduces network-side processing complexity while maintaining effective resource distribution.
Solution Approach 2:
The user terminal performs self-reporting of its bitrate variation characteristics to the network component. This self-service mechanism eliminates the need for the network to perform complex analysis of individual packets, reducing system complexity while enabling intelligent resource allocation.
3Reliability
If dynamic transmission resource distribution is implemented, then QoE management is improved, but network infrastructure complexity increases
Solution Approach 1:
The patent applies preliminary action by having the user terminal provide bitrate variation information in advance before actual resource allocation decisions are made. This allows the network component to prepare and optimize transmission resources proactively, improving QoE management while avoiding the need for complex real-time analysis infrastructure.
Data Source
AI summary
A technique for distributing transmission resources in a media data streaming system is disclosed. A user terminal of the media data streaming system comprises an interface configured to receive a stream of variable bitrate encoded media data via a communications network. The user terminal further comprises a memory storing program code and at least one processing device configured to execute the program code. The program code causes the processing device to determine bitrate variation information for the media data stream and to trigger transmission of the bitrate variation information towards a network component. The network component is configured to trigger dynamic distribution of the transmission resources of the communications network among multiple user terminals dependent on the bitrate variation information.