Picture Frame Transmission Timing for XR Air Interface Congestion
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Solution Overview
Problem
In wireless communication systems, particularly for extended reality (XR) services, the utilization of air interface capacity is inefficient due to the periodic arrival of I-frames, leading to air interface congestion and underutilization at other times, resulting in low transmission performance.
Innovation Solution
A method and apparatus that involve obtaining and transmitting arrival time advance information by terminals to network-side devices, allowing the devices to determine and adjust air interface transmission delay budgets based on this information, thereby optimizing the transmission timing of picture frames.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If I-frames are transmitted periodically according to GoP model, then picture quality is ensured, but air interface congestion occurs when multiple users' I-frames arrive simultaneously
Solution Approach 1:
The patent applies dynamics by making the transmission delay budget adjustable rather than fixed. The network device dynamically adjusts the delay budget for different I-frames based on current air interface conditions, allowing the system to adapt between ensuring picture quality (higher delay budget) and improving capacity utilization (lower delay budget) depending on traffic conditions.
Solution Approach 2:
The patent changes the parameter of transmission delay budget based on arrival time advance information. By adjusting this parameter dynamically according to actual arrival times and network conditions, the system resolves the contradiction between maintaining reliable picture quality and optimizing air interface capacity utilization.
2Productivity
If transmission delay budget is reduced to improve capacity utilization, then air interface efficiency improves, but transmission delay requirements may not be met
Solution Approach 1:
The patent implements feedback by having the terminal report arrival time advance information to the network device. This feedback loop allows the network device to make informed decisions about delay budget adjustment, ensuring that transmission delay requirements are met while optimizing capacity utilization. The system continuously monitors and adjusts based on actual performance.
Solution Approach 2:
The system dynamically adjusts the transmission delay budget based on real-time conditions rather than using a fixed value. This dynamic adjustment allows the system to reduce delay budget when conditions permit (improving efficiency) while increasing it when delay requirements are at risk (maintaining reliability).
Data Source
AI summary
An information transmission method and apparatus, a terminal, and a network-side device. The information transmission method in embodiments of this application includes: obtaining, by a terminal, arrival time advance information, where the arrival time advance information includes an arrival time advance of a target picture frame, and the arrival time advance is an advance of an actual arrival time of the target picture frame relative to a target arrival time; and sending, by the terminal, the arrival time advance information to a network-side device.