Wake-Up Radio Selection Using Blocker Sensing in 5G UE
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems, particularly in 5G NR, face challenges in optimizing power consumption and efficiency in wake-up radio (WUR) selection due to varying power levels of transmission channels, leading to suboptimal performance and increased energy consumption.
Innovation Solution
Implementing a power detector in user equipment (UE) to measure transmission channel power during a predetermined time window and using a wake-up radio (WUR) or main radio (MR) to monitor for a wake-up signal (WUS) based on channel power levels, and enabling network entities to transmit WUS based on these measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If continuous monitoring of wake-up signals is performed to ensure reliable detection, then detection reliability is improved, but power consumption increases
Solution Approach 1:
The system dynamically switches between two radio monitoring modes based on channel conditions: WUR mode for low-power operation when channel is clear, and MR mode when blockers are detected. This dynamic adaptation resolves the contradiction by adjusting the monitoring approach according to real-time conditions rather than using a fixed continuous monitoring strategy.
Solution Approach 2:
The system changes the operational parameters of the radio monitoring by switching between different radio types (WUR and MR) based on measured channel power levels. When power level indicates blockers, the system transitions from WUR to MR, changing the detection parameters to maintain reliability while managing power consumption.
2Use of energy by moving object
If WUR is used for monitoring to reduce power consumption, then power efficiency is improved, but detection reliability deteriorates in the presence of blockers
Solution Approach 1:
The power detector serves as an intermediary that measures channel power levels and determines when blockers are present. Based on its measurements, it triggers a switch from WUR to MR mode, allowing the system to maintain power efficiency during normal operation while ensuring detection reliability when blockers are detected through the intermediary's assessment.
Solution Approach 2:
The system dynamically adjusts the monitoring radio type based on channel conditions assessed by the power detector. When blockers are detected, the system transitions from the power-efficient WUR to the more reliable MR, resolving the contradiction between power efficiency and detection reliability under blocked conditions.
3Reliability
If MR is used for monitoring to ensure reliable detection, then detection reliability is improved, but power consumption increases
Solution Approach 1:
The system uses periodic power detection to monitor channel conditions and only activates MR mode when blockers are detected. This periodic assessment approach allows the system to use the power-efficient WUR for most of the time while temporarily switching to MR only when necessary, reducing overall power consumption while maintaining detection reliability when needed.
4Measurement precision
If power detection is performed during a predetermined time window to identify blockers, then blocker detection accuracy is improved, but measurement complexity increases
Solution Approach 1:
The system performs partial power detection only during predetermined time windows when WUS is expected, rather than continuous monitoring. This partial action approach achieves sufficient blocker detection accuracy for the specific application while reducing measurement complexity and power consumption compared to continuous full-scale monitoring.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enhances power consumption efficiency by allowing the UE to adapt its radio to the perceived power level, improving communication efficiency and reducing energy waste.
Implementation Method 1
measure, during a predetermined time window via a power detector of the UE, a power of a transmission channel
Data Source
AI summary
A method for wireless communication at a user equipment (UE) and related apparatus are provided. In the method, the UE measures the power of a transmission channel for communication between the UE and a network entity during a predetermined time window via a power detector of the UE. Based on the power of the transmission channel, the UE monitors for a wake-up signal (WUS) using a wake-up radio (WUR) or a main radio (MR). The WUS may or may not include a preamble. If the WUS includes a preamble, the UE monitors for the WUS based on the preamble. The method enables a UE to sense the power level associated with a WUS using a power detector, and use a radio that adapts better to the perceived power level (e.g., the WUR or the MR) to monitor for the WUS. Hence, it improves the power consumption efficiency of wireless communication.