UE Transmission Power Switching Across VLP, LPI, and SP Modes
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Solution Overview
Problem
There is a need for improved management of signal transmission power modes in wireless communication systems, particularly in 5G NR, to optimize power usage and reduce interference, especially when user equipment (UE) is out of coverage or operating in different power modes.
Innovation Solution
The UE switches its signal transmission power based on its connection to a base station, transitioning to a standard-power (SP) mode when connected to an SP base station, a low-power indoor (LPI) mode when connected to an LPI base station, and maintaining a very low-power (VLP) mode when not connected, with power levels determined by system information blocks (SIBs) from the base station.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the UE operates in VLP mode with low transmission power, then power consumption is reduced, but signal transmission distance and coverage are limited
Solution Approach 1:
The patent implements dynamic power mode switching where the UE transitions between VLP mode (low power) and SP/LPI modes (higher power) based on real-time detection of base station signals and network conditions. This allows the system to optimize the trade-off between power consumption and transmission distance by adapting the operating mode to current environmental conditions.
Solution Approach 2:
The patent changes the transmission power parameter dynamically by switching between different power modes (VLP, SP, LPI) with distinct power levels. The UE monitors network conditions and adjusts its operating parameters accordingly, transitioning to higher power modes when stronger signals are available and to lower power modes when operating in coverage areas.
2Length of moving object
If the UE switches to SP or LPI mode with higher transmission power, then signal transmission distance is improved, but interference with other systems increases
Solution Approach 1:
The patent employs feedback mechanisms where the UE monitors base station signals and network conditions to determine the appropriate power mode. The system uses feedback from network status detection to automatically adjust transmission power, ensuring that higher power is used only when necessary and in compliance with regulatory limits, thereby reducing unnecessary interference.
Solution Approach 2:
The patent implements parameter changes by switching between different power modes (VLP, SP, LPI) with distinct transmission power levels. This allows the system to optimize the trade-off between transmission distance and interference by adapting the power parameter to current network conditions and regulatory requirements.
3Use of energy by moving object
If the UE continuously monitors network conditions to switch power modes, then power usage is optimized, but device complexity increases
Solution Approach 1:
The patent implements self-service mechanisms where the UE autonomously monitors network conditions and automatically switches between power modes without requiring complex external control. The device uses built-in detectors to monitor base station signals and automatically adjusts its operating mode, reducing the need for complex manual management while optimizing power usage.
Data Source
AI summary
The apparatus of wireless communication is a UE. The UE out of coverage of any base station may operate in a VLP mode and set a signal transmission power to a first power level. The UE may detect and connect to a base station, switch the power mode of UE based on a power mode of the base station connected by the UE, and switch the signal transmission power from the first power level to the second power level greater than the first power level. When the UE detects equal to or more than two base stations, the UE may select the base station from the equal to or more than two base stations detected based on a condition and connect to the base station selected from the two detected base stations.