UAV Cellular Network Interference Management via Preamble Segmentation
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Solution Overview
Problem
Unmanned aerial vehicles (UAVs) without dedicated cellular network chips interfere with cellular networks when communicating through terminals, causing interference and management challenges.
Innovation Solution
A method and device that differentiate between UAVs with dedicated chips and those using terminals for communication by analyzing preambles in random-access requests, managing them accordingly to prevent interference, and recording identification information for proper network management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If UAVs use terminals to communicate with base stations, then communication capability is achieved, but interference with cellular networks occurs
Solution Approach 1:
The patent segments the random access preamble into different types: dedicated preambles for UAVs with dedicated chips and common preambles for UAVs using terminals. This segmentation allows the base station to identify and manage different UAV types separately, enabling terminal-based UAVs to use common preambles that do not interfere with dedicated UAV communication resources
Solution Approach 2:
The patent introduces an intermediary mechanism through the base station that receives random access requests, identifies the UAV type based on preamble type, and routes them to appropriate management modes. This intermediary management layer prevents interference by ensuring terminal-based UAVs are managed separately from dedicated UAVs, isolating their communication impacts
2Object-generated harmful factors
If UAVs with terminals are managed through terminal management manner, then interference is reduced, but network resource allocation efficiency decreases
Solution Approach 1:
The patent implements dynamic management where the base station adapts its management approach based on the detected preamble type. When a common preamble is detected, the system dynamically switches to terminal management manner with appropriate resource allocation strategies, optimizing resource usage for terminal-based UAVs while maintaining low interference levels
3Reliability
If dedicated preambles are used for UAVs with dedicated chips, then communication reliability is improved, but device complexity increases
Solution Approach 1:
The patent creates a universal random access preamble structure that serves multiple functions: dedicated preambles for UAVs with dedicated chips and common preambles for UAVs using terminals. This universal structure with varied functionality improves communication reliability for dedicated UAVs while avoiding the need for completely separate systems, thereby limiting the increase in overall system complexity
Data Source
AI summary
A method for managing an unmanned aerial method includes: receiving a random-access request from an unmanned aerial vehicle, wherein the random-access request includes a preamble; in a case that the preamble is as same as a preset preamble, determining that the unmanned aerial vehicle is equipped with a dedicated chip for a cellular network unmanned aerial vehicle, and managing the unmanned aerial vehicle in an unmanned aerial vehicle management manner; or in a case that the preamble is different from the preset preamble, determining that the unmanned aerial vehicle is equipped with a terminal and establishes a communication connection through the terminal, and managing the unmanned aerial vehicle in a terminal management manner.