Media Frame Transmission Using HARQ Priority Data Scheduling
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Solution Overview
Problem
Existing communication technologies face challenges in ensuring high-quality transmission of media data, particularly in scenarios where data is projected from small-screen devices to large-screen displays, leading to issues such as frame freezing and reduced user experience.
Innovation Solution
Implementing a data transmission method that classifies media data into important and unimportant components, prioritizing the transmission of important data using HARQ mode and unimportant data using non-HARQ mode, with distinct sequences to differentiate transmission modes and limit transmission time within a window to enhance reliability and reduce resource overheads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If HARQ transmission mode is used for all media data, then transmission reliability is improved, but transmission overheads increase
Solution Approach 1:
The patent segments media data into important data (key information representing media stream) and unimportant data (other data). Important data is transmitted using HARQ mode for reliability, while unimportant data is transmitted using non-HARQ mode to reduce overheads. This segmentation resolves the contradiction by applying different transmission strategies to different data portions.
Solution Approach 2:
The patent applies local quality by assigning different transmission quality levels to different data portions. Important data receives high-quality transmission with HARQ retransmission mechanism, while unimportant data receives standard transmission without HARQ. This localized differentiation optimizes the balance between reliability and overheads.
2Reliability
If important data is transmitted preferentially, then data transmission quality is improved, but transmission time is increased
Solution Approach 1:
The patent segments data transmission into two phases: first transmitting important data using HARQ mode to ensure quality, then transmitting unimportant data using non-HARQ mode. This segmentation allows efficient use of transmission time by prioritizing critical data while still delivering complete media information.
Solution Approach 2:
The patent applies preliminary action by first transmitting and confirming important data before proceeding to unimportant data. This ensures that critical media information is established early in the transmission process, improving overall transmission quality without unnecessarily delaying the entire transmission.
3Productivity
If media data is transmitted continuously, then transmission smoothness is improved, but frame freezing occurs
Solution Approach 1:
The patent segments the transmission process into important data transmission (with HARQ) and unimportant data transmission (without HARQ). This segmentation prevents frame freezing by ensuring that critical media data is reliably transmitted first, maintaining transmission smoothness while avoiding delays that would cause freezing.
Data Source
AI summary
Embodiments of this application provide a data transmission method, a transmit device, and a receive device. The method includes: sending important data of a media data frame to a receive device in a HARQ transmission mode; and after the important data of the media data frame is successfully sent, sending unimportant data of the media data frame to the receive device in a non-HARQ transmission mode. Based on this solution, data of the media data frame is classified into the important data and the unimportant data, and the unimportant data is sent after the important data is successfully sent. In this way, on one hand, the important data is preferentially sent, and successful sending of the important data can be ensured in the HARQ transmission mode.