Reference Signal Transmission Density Adjustment for Vehicle Speed Adaptation
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Solution Overview
Problem
In the Internet of Vehicles, the existing reference signal transmission methods from mobile communication systems are inadequate due to the high speeds of vehicles, leading to poor communication quality and increased likelihood of reception failure by vehicle terminals.
Innovation Solution
A method and device that adjust the reference signal transmission density based on the vehicle's driving speed, sending the signal through a control channel in a unicast mode, and utilizing level identification and feedback information to optimize transmission, ensuring better reception and communication quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If reference signal transmission density is increased to improve reception reliability, then reception reliability improves, but network resource consumption increases
Solution Approach 1:
The patent dynamically adjusts reference signal transmission density based on vehicle driving speed. When vehicle speed exceeds a threshold, the system increases transmission density to compensate for Doppler effects and maintain reception reliability. This dynamic adaptation allows the system to optimize between reliability and resource consumption based on actual operating conditions rather than using a fixed transmission density.
2Adaptability or versatility
If reference signal transmission density is increased to adapt to high speed conditions, then communication quality improves, but network resource usage increases
Solution Approach 1:
The patent changes the transmission density parameter based on vehicle speed conditions. By monitoring vehicle speed and comparing it against thresholds, the system adjusts the reference signal transmission density parameter to be higher when speed exceeds the threshold and lower when it does not. This parameter adaptation enables the system to maintain communication quality across varying speed conditions while minimizing unnecessary resource consumption during low-speed operation.
Data Source
AI summary
The present invention relates to a method and device for transmitting a reference signal. The method comprises: acquiring a current traveling speed; determining a corresponding reference signal transmission density according to a speed level to which the current traveling speed belongs; and transmitting a reference signal to a connected opposite end vehicle-mounted terminal according to the reference signal transmission density.