UAV Uplink Power Management via Interference Indicators
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Solution Overview
Problem
Unmanned aerial vehicles (UAVs) connected to cellular networks as user equipment devices cause uplink interference to neighboring cells due to non-orthogonal radio resource allocation, complicating antenna steering and handover processes, especially when tight network coordination is lacking.
Innovation Solution
A method where a UAV user equipment device adjusts its uplink transmission power using a reduced power factor in response to an interference indicator from a neighboring base station, either autonomously or upon instruction from the serving base station, to minimize interference without requiring tight network coordination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UAVs use standard uplink transmission power, then communication performance is maintained, but uplink interference to neighboring cells increases
Solution Approach 1:
The patent implements dynamic uplink transmission power adjustment for UAVs based on real-time interference conditions. The base station monitors interference levels and sends power control commands to adjust UAV transmission power dynamically, transitioning from static standard power to adaptive power levels that respond to changing network conditions.
Solution Approach 2:
The patent changes the transmission power parameter for UAVs based on interference indicators. When interference to neighboring cells is detected, the base station adjusts the power control parameters (such as P0, pathloss compensation factor) to reduce UAV uplink power, directly modifying the physical parameter to eliminate the harmful effect.
2Object-generated harmful factors
If tight network coordination is implemented for antenna steering, then interference management improves, but system complexity increases
Solution Approach 1:
The patent enables the UAV to autonomously adjust its transmission power based on interference indicators received from the base station, without requiring complex coordination between multiple base stations. The UAV self-regulates its power level in response to network conditions, reducing the need for tight inter-base-station coordination and associated complexity.
Solution Approach 2:
The patent implements a feedback mechanism where the base station monitors uplink interference from UAVs and sends power control commands back to the UAV. This closed-loop feedback system allows the network to manage interference effectively through simple uplink power adjustments rather than complex coordinated beam steering.
Data Source
AI summary
An unmanned aerial vehicle (UAV) user equipment (UE) device determines uplink transmission power based on a reduced power factor in response to receiving an interference indicator from a neighboring base station. The reduced power factor results in an uplink transmission power for an uplink signal that is less than the uplink transmission power based on a standard power factor.