Asymmetric Video Resolution Control for Mobile Video Calls
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Solution Overview
Problem
The existing mobile communications networks face challenges in efficiently managing uplink and downlink traffic asymmetry in video calls, leading to resource wastage and inadequate video call quality, particularly in 4G and 5G networks where uplink traffic is significantly lower than downlink traffic, resulting in suboptimal utilization of network resources.
Innovation Solution
Implementing a video transmission method that utilizes media gateways to adjust video resolutions based on network conditions, enabling terminals to support different resolutions in sending and receiving directions, and employing super-resolution processing when network resources are sufficient to enhance image quality and reduce bandwidth costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If operators invest more resources in downlink to meet traffic requirements, then downlink traffic quality is improved, but uplink resources are wasted due to asymmetry
Solution Approach 1:
The patent applies asymmetry by allowing different video resolutions for uplink and downlink directions. The terminal device sends first video data at a first resolution via uplink and receives second video data at a second resolution via downlink, where the resolutions can be different. This resolves the contradiction by optimizing each direction independently according to its specific requirements rather than forcing symmetric resource allocation
Solution Approach 2:
The patent implements local quality by applying different resolution qualities to different directions of video transmission. The uplink video data may use a lower resolution while the downlink video data uses a higher resolution, or vice versa, depending on the specific network conditions and terminal capabilities in each direction. This allows optimal resource utilization tailored to local conditions in each transmission direction
2Loss of energy
If operators reduce costs by relying on traffic planning priority, then operational costs are reduced, but video call quality requirements cannot be met
Solution Approach 1:
The patent applies dynamics by enabling flexible and adaptive resolution selection for video transmission. The terminal device and network can dynamically adjust the first resolution and second resolution based on real-time network conditions, terminal capabilities, and service requirements. This dynamic adjustment allows the system to meet video call quality requirements while optimizing resource usage and controlling costs
Solution Approach 2:
The patent implements parameter changes by modifying the video resolution parameter differently for uplink and downlink directions. By changing the resolution parameter independently in each direction, the system can achieve cost-effective video transmission that still meets quality requirements. The different resolutions allow optimization of bandwidth consumption while maintaining acceptable video call quality
3Manufacturing precision
If terminals send video data at high resolution, then image quality is improved, but network bandwidth consumption increases
Solution Approach 1:
The patent applies asymmetry by allowing the terminal to send video data at a first resolution and receive video data at a second resolution, where these resolutions can be different. This enables the system to optimize image quality versus bandwidth consumption by using lower resolution in the uplink direction where bandwidth is more constrained, while potentially using higher resolution in the downlink direction where the network can support better quality
Solution Approach 2:
The patent implements local quality by applying different resolution qualities to different directions of video transmission. The terminal can use lower resolution for uplink video sending to conserve bandwidth, while receiving higher resolution video data via downlink when network conditions permit. This directional quality optimization resolves the contradiction between image quality and bandwidth consumption
Data Source
Figure 1a
Figure 1b
Figure 1c~2b
AI summary
Disclosed are a video transmission method, device, and system, and a storage medium. The method includes: A first media gateway receives an uplink media packet sent by a first terminal, where the uplink media packet carries information indicating that the first terminal supports an uplink-downlink resolution asymmetry capability and an uplink media stream of a first resolution of the first terminal. The first media gateway sends a first downlink media packet to the first terminal, where the first downlink media packet carries a downlink media stream of a second resolution of the first terminal, and the first resolution is different from the second resolution. The solution is applicable to the following case: In a video call process, a terminal that supports different resolutions in a sending direction and a receiving direction can lower a resolution based on channel quality to deliver a video packet, and can raise a resolution when network resources are sufficient. In this way, optimal utilization of network resources is implemented. Furthermore, image quality at a receiving end is ensured, video call quality is enhanced, and bandwidth costs of video transmission are reduced.