UAV Access Control via Random Value Comparison
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Solution Overview
Problem
In cellular networks, unmanned aerial vehicles (UAVs) face challenges in managing data transmission efficiently, leading to interference with neighboring cells due to uncontrolled access, which affects the quality of data transmission, especially during high-timeliness operations like aerial photography.
Innovation Solution
A method where a base station broadcasts a preset access reference value, and the UAV generates a random numerical value within a specific range to compare with the access reference value, initiating a random access process only if the comparison satisfies a predetermined condition, thereby controlling the number of UAVs accessing the base station and reducing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UAVs transmit data using high transmission power to meet timeliness requirements, then data transmission quality is improved, but interference with neighboring cells increases
Solution Approach 1:
The patent changes the transmission power parameter dynamically based on random access control. By controlling whether UAVs perform random access and transmit data, the system adjusts the effective transmission power usage to reduce interference while maintaining necessary transmission quality for urgent data
2Loss of time
If UAVs perform random access to transmit data, then data transmission timeliness is improved, but the number of accessing UAVs becomes uncontrolled, leading to increased interference
Solution Approach 1:
The base station performs preliminary action by broadcasting the access reference value before UAVs attempt random access. This allows UAVs to pre-evaluate their access probability by comparing their own reference values with the broadcasted threshold, thereby controlling the number of accessing UAVs before actual transmission occurs
Solution Approach 2:
The patent introduces an access reference value parameter that UAVs compare against a broadcasted threshold. This parameter change mechanism controls the probability of random access execution, regulating the number of simultaneous access attempts while preserving timeliness for high-priority transmissions
Data Source
AI summary
The present disclosure relates to an access control execution method, a device, and a system, belonging to the field of wireless communication. The method includes: upon detection of a random access trigger event, acquiring an access reference value received from a base station; generating a random numerical value within a preset numerical value range, comparing the random numerical value with the access reference value; if the comparison result between the random numerical value and the access reference value satisfies a preset access control condition, executing random access process. The present disclosure can be used for improving the quality of data transmissions in a cellular network.