UE Uplink Power Control for Extended-Range Base Station Links
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Solution Overview
Problem
User equipment (UE) devices face challenges in communicating with base stations at extended ranges due to limitations in maximum uplink power, especially when channel conditions are adverse or when extra-terrestrial base stations are involved, leading to connectivity issues.
Innovation Solution
Dynamic modification of the maximum uplink power limit for UE based on proximity to the user, allowing increased power transmission when the UE is at a safe distance, enabling communication with base stations that were previously inaccessible.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the maximum uplink power is increased to communicate with base stations at extended ranges, then the communication range and quality are improved, but the safety and interference avoidance are compromised
Solution Approach 1:
The patent applies dynamics by making the maximum uplink power limit variable rather than fixed. The system dynamically adjusts the power limit based on real-time proximity detection to the user, allowing higher power when the user is far away and restricting power when the user is close. This resolves the contradiction by adapting the power level to the specific operational context, thereby achieving extended communication range when safe while preventing harm when proximity is detected.
Solution Approach 2:
The patent changes the parameter of maximum uplink power limit from a static hard-set value to a dynamic value that varies based on proximity conditions. By implementing parameter changes, the system can optimize communication performance for extended range when safety conditions are met, while automatically reducing power to prevent interference and ensure safety when the user is in close proximity.
2Reliability
If the maximum uplink power is dynamically increased for extended range communication, then connectivity with base stations is improved, but the device complexity increases
Solution Approach 1:
The system implements self-service by having the UE autonomously determine its proximity to the user and automatically adjust the maximum uplink power limit without requiring manual user input or complex external control. The proximity detection and power adjustment are handled internally by the device, which simplifies the user experience while managing the complexity through automated decision-making based on sensor data.
Solution Approach 2:
The patent employs feedback mechanisms where the UE continuously monitors its proximity to the user through sensors and uses this feedback information to adjust the maximum uplink power limit accordingly. This closed-loop feedback system enables automatic adaptation to changing conditions, improving connectivity when needed while managing complexity through intelligent control based on real-time proximity information.
Data Source
AI summary
Systems and methods are provided for managing maximum uplink transmission power of a UE. Based at least in part on a determination that the UE is greater than a predetermined threshold distance from a user, the maximum uplink power limit is increased from a default level to a higher level to facilitate extended-range communication in the uplink. With a greater maximum uplink power limit, the UE can communicate more effectively in degraded channel conditions or with base stations that are located at greater ranges from the UE, such as extra-terrestrial base stations including satellites.