Wireless Cell Selection Using Low-Power Wake-Up Support
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Solution Overview
Problem
Terminal devices face high power consumption due to the inability to utilize a low-power wake-up signal after cell selection or reselection, as the camped cell may not support the wake-up receiver (WUR), despite the introduction of WUR to reduce power consumption.
Innovation Solution
A wireless communication method where a terminal device receives first information related to a low-power wake-up signal (LP-WUS) to facilitate selecting a camping cell during cell selection or reselection, increasing the likelihood of camping on a cell that supports the LP-WUS, thereby reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the terminal device uses a wake-up receiver (WUR) to receive low-power wake-up signals, then power consumption is reduced, but the terminal device cannot effectively use the WUR after cell selection or cell reselection because the camped cell may not support the low-power wake-up signal
Solution Approach 1:
The patent applies preliminary action by having the terminal device acquire wake-up signal support information from the camped cell before attempting to use the wake-up receiver. The terminal device checks whether the camped cell supports the low-power wake-up signal through system information or other signaling, and only activates the WUR when the cell is confirmed to support it. This preliminary verification ensures that the power-saving mechanism remains reliable after cell selection or reselection.
2Use of energy by moving object
If the terminal device disables the primary receiver to use the low-power wake-up receiver, then power consumption is reduced, but the terminal device loses the ability to reliably receive wake-up signals if the camped cell does not support it
Solution Approach 1:
The patent applies dynamics by making the receiver configuration adaptive rather than static. The terminal device dynamically switches between using the primary receiver and the wake-up receiver based on the capabilities of the camped cell. When the cell supports low-power wake-up signals, the terminal device disables the primary receiver and uses only the WUR. When the cell does not support it, the terminal device reverts to using the primary receiver. This dynamic adjustment maintains operational reliability while optimizing power consumption.
Data Source
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AI summary
Provided are a wireless communication method, and a terminal device and a network device. The method comprises: a terminal device receiving first information, wherein the first information is used for performing cell selection/cell reselection, and the first information is related to a low-power-consumption wake-up signal. That is to say, a terminal device may receive first information, which is related to a low-power-consumption wake-up signal and is used for selecting a resident cell during a cell selection or reselection process, which is conductive to an increase in the possibility of the terminal device selecting a cell for residence, which cell supports the low-power-consumption wake-up signal, such that the power consumption of the terminal device is reduced.