HD Video Wireless Transmission via Dynamic Payload and MRTT Scheduling
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Solution Overview
Problem
High definition video wireless transmission systems face challenges in maintaining viewing quality due to packet errors and arrival time issues, particularly with finite frequency bandwidth, which affects frame error rates and delays, leading to suboptimal performance in both restricted packet error rate and optimum throughput methods.
Innovation Solution
The method involves determining the Minimum Required Transmission Time (MRTT) for each video frame, adjusting payload length, and using a scheduler to manage data packets according to this time constraint, while also adapting Modulation and Coding Schemes based on signal-to-noise ratios to ensure target frame error rates are met, thereby optimizing transmission efficiency and reducing errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the payload length of packets is shortened to decrease the packet error rate, then the packet error rate is reduced (below 10^-2), but more time is required for transmission due to added overhead information
Solution Approach 1:
The patent implements dynamic payload length adjustment based on channel conditions. The system adapts the payload length of packets according to the signal-to-noise ratio and channel quality, transitioning between different transmission modes (short payload for poor channels, long payload for good channels) to optimize both reliability and transmission time
2Productivity
If the payload length of packets is increased to increase the effective throughput, then the data transmission rate is improved, but the packet error rate increases
Solution Approach 1:
The system dynamically adjusts payload length based on real-time channel conditions. When channel quality is good, longer payloads are used to maximize throughput; when channel quality deteriorates, shorter payloads are used to maintain reliability, thus resolving the contradiction between productivity and reliability
3Quantity of substance
If conventional transmission methods are used with finite frequency bandwidth, then the available bandwidth is limited, but the frame error rate increases and arrival time delays occur
Solution Approach 1:
The patent changes multiple transmission parameters including payload length, modulation scheme, and coding rate to adapt to finite bandwidth constraints. By dynamically adjusting these parameters, the system maintains low frame error rates while efficiently utilizing the limited bandwidth resource
Data Source
AI summary
A High Definition (HD) video wireless transmission method for transmitting a data packet for a video frame of an HD video is provided. The method includes: receiving the video frame which comprises a video frame size; acquiring a payload length and a Minimal Required Transmission Time (MRTT) associated with the video frame, wherein the MRTT is a minimal time bound for transmitting the video frame to a receiving end; performing partitioning to the video frame for acquiring the data packet according to the payload length; and performing scheduling to the data packet according to the MRTT, and the scheduled data packet is transmitted to the receiving end.