Broadcast Gateway Stream Selection with QoS Monitoring
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Solution Overview
Problem
Current digital broadcasting and distribution networks, such as those following the ATSC3.0 standard, lack the ability to detect and manage deteriorated or failed data streams, leading to potential service outages for users, as they only account for main broadcast gateway failures and not errors within the data stream itself.
Innovation Solution
Incorporating a method where both the main and secondary broadcast gateways generate data streams with quality of service information packets (STL-EI packets) that are transmitted to a switch, allowing real-time selection and switching between the two streams based on the current state of the gateways, ensuring that only high-quality data streams are distributed to broadcasting sites.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a secondary broadcast gateway is added to replace the main broadcast gateway in case of failure, then system reliability is improved, but the system cannot detect deteriorated or failed services within the data stream itself
Solution Approach 1:
The patent implements feedback by having the switch continuously monitor quality of service information packets (STL-EI packets) generated by both main and secondary broadcast gateways. This feedback mechanism enables real-time detection of service deterioration or failure within data streams, allowing the system to identify and switch away from degraded services before complete failure occurs, thus resolving the detection capability limitation while maintaining the redundancy structure.
2Difficulty of detecting and measuring
If quality of service information packets are generated and transmitted in real-time, then service quality detection is improved, but device complexity increases
Solution Approach 1:
The patent applies preliminary action by having broadcast gateways pre-configure and continuously generate quality of service information packets (STL-EI packets) as part of the data stream processing. This preliminary preparation of quality information enables the switch to perform real-time monitoring and detection without requiring complex analysis or processing at the switching stage, thus improving service quality detection while limiting the increase in device complexity.
Data Source
AI summary
A method for selecting a data stream for distribution to a plurality of broadcasting sites. The method includes: receiving a main data stream and a back-up data stream respectively, generated by a main broadcast gateway and a secondary broadcast gateway respectively, from source data, called a main stream and a secondary stream respectively; receiving at least one packet including a piece of information representative of a quality of service associated with the main stream and the secondary stream respectively, at one instant at least or over one given period at least, the at least one packet, called a main current packet and a secondary current packet respectively, being generated by the main broadcast gateway and secondary broadcast gateway respectively; and selecting in real time the main stream or the secondary stream respectively in taking account of the main current packet and secondary current packet, delivering the data stream for distribution.