Dynamic Transmission Rate Adjustment for Video Bandwidth
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Solution Overview
Problem
Existing image information transmission systems for autonomous driving vehicles face challenges in efficiently adapting transmission rates to varying communication bandwidths, leading to delays and deficiencies in video transmission, especially in wireless networks with limited bandwidth and changing environments.
Innovation Solution
An image information reception apparatus and transmission apparatus that utilize a packet analyzing unit to determine actual reception variations, allowing for dynamic adjustment of transmission rates based on packet reception intervals, without the need for test data, thereby effectively utilizing communication bandwidth and responding to environmental changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the transmission rate is increased to utilize ample communication bandwidth, then the productivity of image information transmission is improved, but the reliability deteriorates when bandwidth becomes limited or environmental conditions change
Solution Approach 1:
The patent implements dynamic transmission rate adjustment by continuously monitoring packet reception intervals and adapting the transmission rate accordingly. The system transitions from a static transmission rate to a dynamic one that automatically increases when bandwidth is ample and decreases when bandwidth becomes limited, thereby resolving the contradiction between productivity and reliability
Solution Approach 2:
The patent employs a feedback mechanism where the reception apparatus measures actual reception variations based on packet reception intervals and sends control signals back to the transmission apparatus. This feedback loop enables the transmission rate to be adjusted in response to real-time communication conditions, ensuring both high productivity when possible and reliable operation when bandwidth is constrained
2Measurement precision
If test data is used to measure communication bandwidth, then the measurement precision is improved, but the loss of time increases due to the need for separate test data transmission
Solution Approach 1:
The patent extracts the bandwidth measurement function from a separate test data transmission process and integrates it into the normal image information transmission process. By using the actual packet reception intervals from operational data rather than dedicated test data, the system achieves accurate bandwidth measurement without the time penalty of separate testing
Solution Approach 2:
The system uses its own operational transmission data (packet reception intervals from actual image information transmission) to perform bandwidth measurement and self-adjustment. This self-service approach eliminates the need for external test data and allows the system to continuously monitor and adapt to bandwidth conditions using its own operational metrics
Data Source
AI summary
An image information reception apparatus includes a receiving unit, a packet analyzing unit, and a transmission rate change processing unit. The receiving unit receives image information from an image information transmission apparatus through a communication network. The packet analyzing unit determines an actual reception variation that is based on variations in a reception interval of packets that are included in the image information. The transmission rate change processing unit performs a process to increase a target transmission rate of the image information transmission apparatus in response to the actual reception variation being greater than a predetermined value.