Low-Power Wake-Up Paging for NR Terminal Energy Savings
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Solution Overview
Problem
Existing communication technologies face challenges in implementing a paging scheme that reduces power consumption in terminals by utilizing a low power wake-up receiver (LP-WUR) in a new radio (NR) system, as the main communication module needs to be in an awake state for paging, leading to high energy consumption.
Innovation Solution
A paging method and apparatus utilizing a low power wake-up signal (LP-WUS) to assist terminals in receiving paging messages, reducing the need for the main communication module to be active, thereby conserving energy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the main communication module is kept in an awake state for paging operations, then the paging reliability is improved, but the power consumption increases
Solution Approach 1:
The receiving module is divided into two independent parts: a low power wake-up receiving module (LP-WUR) for monitoring wake-up signals and a main communication module for handling actual paging messages. This segmentation allows the main module to remain in sleep mode while the low power module operates continuously, resolving the contradiction between reliability and power consumption.
Solution Approach 2:
A low power wake-up signal (LP-WUS) acts as an intermediary between the network and the terminal. The LP-WUS is first transmitted to wake up the terminal before the actual paging message is sent, allowing the main communication module to be activated only when necessary, thus reducing overall power consumption while maintaining paging reliability.
2Use of energy by moving object
If the main communication module is disabled to save power, then the power consumption is reduced, but the paging reception capability is lost
Solution Approach 1:
The receiving module is divided into two independent parts: a low power wake-up receiving module (LP-WUR) for monitoring wake-up signals and a main communication module for handling actual paging messages. This segmentation allows the main module to remain in sleep mode while the low power module operates continuously, resolving the contradiction between reliability and power consumption.
Solution Approach 2:
The low power wake-up receiving module performs preliminary monitoring of wake-up signals before the main communication module is activated. This preliminary action ensures that the main module is only activated when a wake-up signal is detected, preventing power loss while ensuring paging reception capability is maintained when needed.
3Use of energy by moving object
If a low power wake-up receiving module is introduced, then the power consumption is reduced, but the device complexity increases
Solution Approach 1:
The low power wake-up receiving module is designed as a simple, dedicated component with minimal functionality - only to detect wake-up signals. By using a simple, purpose-built module rather than a full-featured communication module, the patent reduces power consumption while keeping the added complexity minimal and manageable.
Data Source
Figure 1A~1B
Figure 2~3A
Figure 3B~3C
AI summary
The present application belongs to the technical field of communications. Disclosed are a paging method and a communication device. The paging method in the embodiments of the present application comprises: a first communication device receiving paging-related information sent by a second communication device, wherein the paging-related information is used for assisting the first communication device in paging a terminal by means of a low-power wake-up signal (LP-WUS), the LP-WUS is used for bearing a paging message, or the LP-WUS is used for instructing the terminal to receive a paging message sent by a network-side device.