Multiplexing Video Streams Over Single Transport Bearer Channel
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Solution Overview
Problem
Current methods for broadcasting multiple video streams over wireless networks often require multiple transport bearer channels, which consume additional resources and result in reduced fidelity and loss of individual stream attributes, limiting user device selection and efficiency.
Innovation Solution
The technique involves encoding and managing multiple video streams using separate transport layer sessions over a single transport bearer channel, preserving individual attributes such as codecs, bit rates, and DRM techniques, and allowing user devices to select specific streams while conserving network and processing resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple transport bearer channels are used to broadcast multiple video streams, then the number of video streams that can be broadcast is increased, but network resources are consumed and device complexity increases
Solution Approach 1:
The patent combines multiple video streams into a single transport bearer channel by multiplexing them together. The broadcast controller receives multiple video streams from different sources and multiplexes them onto one transport bearer channel, allowing efficient use of network resources while maintaining the ability to broadcast multiple streams simultaneously.
Solution Approach 2:
The single transport bearer channel is designed to carry multiple video streams with different attributes (codecs, bit rates, resolutions). This multi-functional channel can adapt to different stream requirements through the use of multiple logical bearer channels within the single physical channel, making the system more versatile and resource-efficient.
2Productivity
If multiple transport bearer channels are used to broadcast multiple video streams, then the number of video streams that can be broadcast is increased, but device complexity increases
Solution Approach 1:
The patent segments the single transport bearer channel into multiple logical bearer channels, each carrying specific video stream attributes. This segmentation allows user devices to selectively process only the streams they are interested in, reducing processing complexity while still enabling multiple streams to be broadcast simultaneously.
Solution Approach 2:
The broadcast controller acts as an intermediary that manages the multiplexing and demultiplexing of video streams. It handles the complexity of managing multiple streams with different attributes, while user devices receive a simplified interface through the single transport bearer channel, reducing their processing burden.
3Productivity
If multiple transport bearer channels are used, then more video streams can be transmitted, but individual stream attributes are lost
Solution Approach 1:
The patent applies local quality by maintaining distinct attributes for each video stream within the single transport bearer channel. Each logical bearer channel preserves the specific codecs, bit rates, and resolutions of its associated video stream, allowing individual stream characteristics to be maintained even while multiple streams share the same physical channel.
Data Source
AI summary
A user device may be configured to identify a received transport bearer channel, via which a group of content streams are received, the transport bearer channel including a group of logical bearer channels that each correspond to a particular transport layer session, each transport layer session corresponding to a particular one of the content streams; receive a selection of a particular content stream, of the group of content streams; identify a particular logical bearer channel, of the group of bearer channels, that corresponds to the particular content stream; extract a transport layer session from the identified particular logical bearer channel; provide, from a transport layer of the user device and to an application layer of the user device, the particular content stream from the transport layer session; and present the particular content stream.