Terminal Reception State Switching for Power and Sensitivity
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Solution Overview
Problem
The low-power wake-up signal (LP-WUS) receiver in communication systems has poor sensitivity, leading to a degraded coverage range and potential mobility issues due to its low measurement functionality.
Innovation Solution
A communication method and devices that determine the reception state of terminal devices based on channel quality and mobility criteria, switching between LP-WUS and normal reception states to balance sensitivity and power consumption, using first configuration information to transition between these states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If LP-WUS receiver is used to reduce power consumption, then power saving is improved, but sensitivity deteriorates
Solution Approach 1:
The terminal device dynamically switches between LP-WUS reception mode and normal reception mode based on mobility state. When mobility is detected (changing cell), the device transitions to normal reception mode to ensure accurate signal reception. When stationary, it uses LP-WUS mode to minimize power consumption. This dynamic adaptation resolves the contradiction between power saving and sensitivity.
Solution Approach 2:
The system changes the reception parameter based on mobility conditions. The reception mode parameter is adjusted from LP-WUS (low power, low sensitivity) to normal reception (high power, high sensitivity) when mobility is detected, and vice versa. This parameter change allows the system to optimize between power consumption and sensitivity according to actual operational needs.
2Use of energy by moving object
If LP-WUS receiver is used to reduce power consumption, then power saving is improved, but coverage range deteriorates
Solution Approach 1:
The terminal device dynamically adjusts its reception capability based on mobility state. When the device is stationary, LP-WUS mode provides sufficient coverage with minimal power consumption. When mobility is detected (cell change), the system switches to normal reception mode to expand coverage range and ensure continuous service. This dynamic adjustment resolves the contradiction between power saving and coverage range.
3Use of energy by moving object
If LP-WUS reception state is used, then power consumption is reduced, but measurement functionality deteriorates
Solution Approach 1:
The system dynamically switches measurement functionality based on mobility detection. In LP-WUS reception state, measurement functionality is minimized to save power. When mobility is detected (changing cell), the system transitions to normal reception state where full measurement functionality is restored to accurately assess channel conditions and perform handover operations. This dynamic adjustment resolves the contradiction between power consumption and measurement functionality.
Data Source
AI summary
A communication method, a terminal device, and a network device are provided. The communication method includes the following. The terminal device receives first configuration information sent by a network device, where the first configuration information is used for determining a reception state of the terminal device, and the reception state includes a low-power wake-up signal (LP-WUS) reception state or a normal reception state. In the normal reception state, the terminal device can have relatively high receiving sensitivity; while in the LP-WUS reception state, the terminal device can have relatively low power consumption.