Remote Driving Video Encoding for Wireless Handover Reliability
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Solution Overview
Problem
Current wireless communication networks face limitations in capacity, especially during hand-over between neighboring cells, which affects the reliable transmission of live video data for remote vehicle driving, impacting safety and efficiency.
Innovation Solution
A vehicle system equipped with a capturing unit, video encoding unit, and transmission unit, controlled by a unit that optimizes video encoding and transmission based on pre-determined location information, real-time driving parameters, and real-time environment information, using modern video coding technologies like H.264/AVC or H.265/HEVC for ultra-low delay encoding and decoding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If video encoding is optimized using modern coding technology with ultra-low delay mode, then transmission speed and responsiveness are improved, but video quality and reliability deteriorate due to limited channel capacity during hand-over
Solution Approach 1:
The patent implements dynamic adaptation of video encoding parameters based on real-time network conditions. The system monitors channel capacity and hand-over events, then adjusts encoding settings (such as bitrate, resolution, or frame rate) accordingly. This allows the system to maintain high transmission speed during stable connections while automatically reducing quality requirements during hand-over events to ensure reliable delivery within limited channel capacity.
2Reliability
If channel capacity is increased to improve video transmission quality, then video quality improves, but device complexity and network infrastructure requirements worsen
Solution Approach 1:
The patent employs parameter changes in the video encoding process to adapt to varying network conditions. By modifying encoding parameters (such as quantization parameters, bitrate allocation, or resolution) based on real-time channel capacity assessment, the system achieves reliable video transmission without requiring increased physical channel capacity or complex network infrastructure upgrades.
3Measurement precision
If ultra-low delay encoding is used to improve responsiveness, then control precision is improved, but video quality deteriorates due to reduced reference frame usage
Solution Approach 1:
The system dynamically adjusts the balance between delay and video quality based on network conditions and task requirements. During critical control moments or when network conditions permit, the system can use more reference frames for higher quality encoding. During hand-over events or when low latency is critical, it switches to ultra-low delay mode with fewer reference frames, accepting temporary quality reduction for the sake of responsiveness.
Data Source
AI summary
A vehicle adapted to be remotely driven via a wireless communication network comprises a capturing unit for capturing live video data of the vehicle's environment, a video encoding unit for video encoding the captured live video data, a transmission unit for transmitting the encoded live video data via the wireless communication network, and a control unit for controlling the video encoding unit and/or the transmission unit. The control unit controls the video encoding unit to optimize the video encoding of the captured live video data and/or to control the transmission unit to optimize the transmission of the encoded live video data. The controlling is based on one, two or all of: (i) pre-determined location information associated with a current location of the vehicle; (ii) real-time driving information associated with current driving parameters of the vehicle, and; (iii) real-time environment information associated with a current environment of the vehicle.


