Channel Bonding for UHD Video Transmission
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Solution Overview
Problem
Conventional approaches are inefficient for handling ultra-high definition video transmission due to high bit rates that exceed the capacity of single modulator and RF front-end circuits, leading to potential packet loss and transmission unreliability.
Innovation Solution
The system employs channel bonding by splitting high-bit-rate packet streams into sub-streams, with each sub-stream being processed and transmitted through multiple channels, and includes mechanisms to repeat chunk headers in null packets to enhance transmission reliability, ensuring that the receiver can reconstruct the original stream even if headers are lost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a single modulator and RF front-end circuit is used for video transmission, then the device complexity is reduced, but the transmission capacity is insufficient for ultra-high definition video with high bit rates
Solution Approach 1:
The patent segments the high-bit-rate video stream into multiple sub-streams, each with lower bit rate suitable for individual modulator circuits. The segmenting circuit divides the incoming video stream into N sub-streams that are then processed by N separate modulator circuits operating in parallel, thereby increasing total transmission capacity without overloading a single circuit.
Solution Approach 2:
The patent combines multiple modulator circuits and RF front-end circuits to operate in parallel, effectively merging their individual transmission capacities to handle the total high-bit-rate video stream. The receiver combines the outputs from multiple channels to reconstruct the original video stream, achieving high capacity through parallel processing.
2Reliability
If packet streams are transmitted through multiple channels, then transmission reliability is improved, but the device complexity increases due to multiple modulators and RF front-end circuits
Solution Approach 1:
The video stream is segmented into multiple sub-streams that are transmitted through different channels. This segmentation allows the system to exploit channel diversity and redundancy, improving transmission reliability by ensuring that if one channel fails, other channels can still deliver the video data.
Solution Approach 2:
The patent changes the transmission parameters by distributing the video stream across multiple channels with different characteristics. By adjusting how the stream is divided and assigned to channels, the system optimizes reliability while managing the complexity of having multiple transmission paths.
3Reliability
If chunk headers are repeated in null packets, then transmission reliability is improved through redundancy, but the loss of information is reduced at the cost of increased data volume
Solution Approach 1:
The patent performs preliminary action by embedding chunk headers in advance within the video stream and repeating them in null packets before transmission. This ensures that even if the original header is lost during transmission, the receiver can reconstruct the stream using the redundant header information that was prepared beforehand.
Solution Approach 2:
The patent creates copies of the chunk headers and places them in null packets throughout the stream. These copies serve as redundant information that can replace the original headers if they are lost during transmission, thereby improving reliability while adding minimal overhead compared to the total data volume.
Data Source
AI summary
Systems and methods are provided for communication ultra-high definition (UHD) video. At the transmitter-side, a single packet stream may be generated based on a plurality of UHD video streams; and the single packet stream may be split into a plurality of sub-streams, with each sub-steam comprising at least one or more packets from the single packet stream. The plurality of sub-streams may be processes concurrently via a plurality of transmit paths, to generate a corresponding plurality of signals for transmission over a particular physical medium. At the receiver-side, the plurality of signals may be concurrently received and processed, via a plurality of receive paths, and the plurality of sub-streams may be reconstructed based on processing of the plurality signals. The plurality of sub-streams may be combined to re-generate the single packet stream; and the plurality of encoded UHD video streams may then be extracted from the single packet steam.