Satellite Uplink Power Control for Shared-Spectrum Interference
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Solution Overview
Problem
Noise and interference from nearby user devices communicating with terrestrial access points using the same radio frequency spectrum can impact communications between user devices and aerospace access points, such as satellites.
Innovation Solution
A system that modifies the transmission power of nearby user devices' uplink channels by generating a degradation indicator when signal quality falls below a threshold, allowing a terrestrial network to reduce interference by adjusting power levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If user devices use the same radio frequency spectrum to communicate with both aerospace access points and terrestrial access points, then spectrum utilization efficiency is improved, but uplink interference and noise increase
Solution Approach 1:
The patent implements dynamic uplink power modification where the aerospace access point adjusts the transmission power of nearby user devices based on real-time uplink quality measurements. The system dynamically modifies power levels to reduce interference when quality degradation is detected, while maintaining normal operation when interference is not present, thus resolving the contradiction between spectrum utilization and interference reduction.
Solution Approach 2:
The patent changes the transmission power parameter of user devices based on uplink quality conditions. By modifying this critical parameter dynamically, the system can reduce uplink interference during high-interference periods while maintaining efficient spectrum usage during normal conditions, directly addressing the technical contradiction.
2Area of stationary object
If transmission power on uplink channel is increased to improve communication range, then coverage area is expanded, but uplink interference with aerospace access points increases
Solution Approach 1:
The system dynamically adjusts transmission power based on real-time uplink quality measurements and interference conditions. When a user device needs extended coverage but would cause interference, the system modifies power levels adaptively, allowing coverage expansion when necessary while preventing interference during critical aerospace communication periods.
Solution Approach 2:
The aerospace access point measures uplink quality and provides feedback about interference conditions to the terrestrial network. This feedback mechanism enables the system to balance coverage requirements with interference reduction by continuously monitoring and adjusting power levels based on actual communication quality.
3Reliability
If power modification is implemented to reduce uplink interference, then communication quality with aerospace access points is improved, but system complexity increases
Solution Approach 1:
The system implements self-service through automated uplink quality measurement and autonomous power modification. The aerospace access point independently monitors communication quality and triggers power adjustments without requiring complex manual intervention or extensive system coordination, thereby improving reliability while limiting the increase in system complexity.
Solution Approach 2:
The patent introduces a degradation indicator as an intermediary mechanism that simplifies the power modification process. Instead of complex direct control, the system uses this intermediate signal to convey uplink quality information to the terrestrial network, which then autonomously adjusts power levels, reducing the complexity burden while maintaining communication quality.
Data Source
AI summary
Aspects herein provide systems, methods, and media for mitigating uplink degradation, noise, and/or other interference experienced between a user device and a satellite. When the uplink degradation, noise, and/or other interference is below a signal quality threshold, the telecommunications network identifies base stations with coverage areas that overlap with the coverage area of the satellite. The telecommunications network instructs and causes those base stations to modify an amount of power to be utilized on the uplink channel between another user device and the base station. This power modification technique reduces or prevents uplink degradation, noise, and/or other interference experienced between a user device and a satellite and caused by communications between other user devices and the terrestrial base stations.