Wireless Video Transceiver Using Multi-Carrier Sub-Carrier Allocation
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Solution Overview
Problem
Conventional wireless video communication methods fail to differentiate the transmission of image information of varying importance, leading to reduced video quality due to bit errors and loss of image header information in wireless channels.
Innovation Solution
A method and apparatus for wireless video transceiving using a multi-carrier technique that separates and discriminately transmits image information based on importance, allocating sufficient sub-carriers and optimal channels for critical I frames and image header information, while allocating fewer resources to less critical B and P frames, ensuring reliable transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all image information (I frames, P frames, B frames, and image header information) is transmitted using the same conventional video stream method, then the transmission process is simple and uniform, but the video quality deteriorates due to bit errors and loss of critical information in wireless channels
Solution Approach 1:
The patent segments the video stream into different types of image information (I frames, P frames, B frames, and image header information) and transmits each type through separate transmission paths with different priorities and error protection levels. This segmentation allows critical information like I frames and image headers to receive enhanced protection while less critical B frames use standard transmission, thereby improving overall video quality without uniformly increasing complexity across all data streams
Solution Approach 2:
The patent applies different transmission qualities and error protection levels to different parts of the video stream based on their importance. Critical components such as I frames and image header information receive higher quality transmission with more robust error correction, while less critical P and B frames use standard transmission. This localized quality enhancement improves video reliability without unnecessarily increasing the complexity of the entire transmission system
2Reliability
If sufficient resources are allocated to transmit all image information with high reliability, then video quality is maintained, but transmission efficiency and resource utilization deteriorate
Solution Approach 1:
The patent applies partial action by providing excessive error protection and resource allocation only to critical image information (I frames and image header information) that requires high reliability, while using standard protection levels for less critical data (P and B frames). This selective approach ensures that the most important data receives the necessary reliability guarantees without allocating excessive resources to all data streams, thereby maintaining transmission efficiency while improving overall video quality
3Reliability
If image header information is transmitted with standard error protection, then transmission complexity remains low, but video quality deteriorates when header information is lost due to wireless channel errors
Solution Approach 1:
The patent applies local quality by providing enhanced error protection specifically for image header information, which is critical for video decoding. The image header is transmitted through a dedicated high-reliability path with stronger forward error correction, while other less critical data uses standard protection. This targeted approach ensures header information integrity without unnecessarily increasing the complexity of error protection mechanisms for the entire video stream
Data Source
AI summary
The present invention discloses a method and an apparatus of wireless video transceiving based on a multi-carrier technique. The method comprises the following steps: image information in a video GOP are separated and a sequential relationship between individual image information is recorded; general image information and important image information are treated discriminatingly in a video transmission process according to the degree of importance of different image information, in order to improve a transmission quality of the important image information; after the image information is received by a receiving end, the image information is recombined into the video GOP according to the sequential relationship. In the present invention, the important image information and non-important image information are treated discriminatingly via a sub-carrier allocation and a selection of different transmitting conditions in order to enhance the transmission quality of important image information in terms of improving the transmitting condition, so that the transmission quality of the wireless video is guaranteed.