Wireless Communication Cell Selection for Low-Power Wake-Up Signals
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face high power consumption in terminal devices due to the inability to utilize a low-power wake-up receiver (WUR) after cell selection or reselection, as the camped cell may not support the low-power wake-up signal, leading to continued high power usage.
Innovation Solution
A wireless communication method where a network device transmits first information related to a low-power wake-up signal (LP-WUS) to assist terminal devices in selecting or reselecting cells that support LP-WUS, using system information or dedicated signaling to increase the likelihood of camping on LP-WUS-supported cells, thereby reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a terminal device uses a wake-up receiver (WUR) to receive low-power wake-up signals and disables the primary receiver, then power consumption is reduced, but after cell selection or reselection the device may camp on a cell that does not support low-power wake-up signals, causing the device to cannot use the WUR and power consumption remains high
Solution Approach 1:
The network device performs preliminary action by including wake-up signal support indication information in system information or dedicated signaling before the terminal device performs cell selection or reselection. This allows the terminal device to advance know which cells support low-power wake-up signals, enabling it to select or reselect to a suitable cell that maintains power savings, thus resolving the contradiction between power consumption and cell selection reliability.
2Adaptability or versatility
If a terminal device camps on a cell that does not support low-power wake-up signals, then cell selection flexibility is maintained, but the device cannot disable the primary receiver and power consumption remains relatively large
Solution Approach 1:
The network device provides feedback to the terminal device by transmitting wake-up signal support indication information through system information or dedicated signaling. This feedback enables the terminal device to identify which cells support low-power wake-up signals and adjust its cell selection or reselection accordingly. The feedback mechanism maintains cell selection flexibility while ensuring the device camps on a cell that supports power-saving operations, thus resolving the contradiction between adaptability and power consumption.
Data Source
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. The first information is carried in system information, and the terminal device is a terminal device that supports the low-power wake-up signal.