Uplink Power Control for UAV Interference Management
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Solution Overview
Problem
In aerial communication systems, unmanned aerial vehicles (UAVs) operating in line-of-sight (LOS) states with base stations cause interference to neighboring cells, leading to degraded system performance due to unmanaged uplink transmission power.
Innovation Solution
A method for determining uplink transmission power in user equipment (UE) that considers interference to neighboring cells, using received serving cell and neighboring cell transmission power information to set the power within maximum allowable interference limits, thereby optimizing power configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If uplink transmission power is increased to improve data throughput, then communication efficiency is improved, but interference to neighboring cells increases causing system performance degradation
Solution Approach 1:
The patent dynamically adjusts the uplink transmission power parameter based on the aerial vehicle's altitude and location. By changing the power parameter according to environmental conditions, the system achieves high data throughput when needed while preventing excessive interference to neighboring cells, thus resolving the contradiction between productivity and harmful factors.
2Reliability
If transmission power is increased to maintain communication quality, then signal reliability is improved, but interference to serving and neighboring cells increases
Solution Approach 1:
The patent applies different transmission power control strategies for different aerial vehicle locations and altitudes. By making the power control local and adaptive rather than uniform, the system maintains reliable communication for each aerial vehicle while minimizing interference to specific neighboring cells based on their spatial relationship, resolving the contradiction between reliability and harmful factors.
3Ease of operation
If simple power control is used to reduce complexity, then device operation is simplified, but interference management capability is reduced
Solution Approach 1:
The patent implements a feedback mechanism where the aerial vehicle's altitude and location information is continuously monitored and used to adjust transmission power. This feedback-based approach maintains ease of operation through automated control while effectively managing interference, resolving the contradiction between ease of operation and interference management capability.
Data Source
AI summary
The present specification relates to a wireless communication system and, particularly, to a method for controlling the power of a terminal, and a device therefor, the method comprising: receiving, from a serving cell, serving cell-related transmission power information and adjacent cell-related interference information; and determining uplink transmission power on the basis of the serving cell-related transmission power information and the adjacent cell-related interference information, wherein the uplink transmission power is determined on the basis of a minimal value from among (1) maximum transmission power of a terminal, (2) transmission power based on the serving cell-related transmission power information, and (3) maximum allowable interference power based on the adjacent cell-related interference information, and an uplink signal is transmitted to the serving cell on the basis of the uplink transmission power. The terminal communicates with at least one from among a mobile terminal, a network, and an autonomous vehicle excluding a vehicle that includes the terminal.