LP-WUS Paging for Low-Power Terminal Wake-Up Reliability

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Solution Overview

Problem

Existing communication technologies face challenges in implementing a paging scheme that reduces power consumption in terminals, as current methods require the main communication module to be in an awake state, which is not conducive to power saving.

Innovation Solution

A paging method utilizing a low power wake-up signal (LP-WUS) is introduced to assist in paging terminals, where the LP-WUS carries paging messages or indicates terminals to receive messages from a network side device, reducing the need for the main communication module to be active.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the main communication module is kept in an awake state to monitor paging messages, then the terminal can receive paging information timely, but the power consumption increases significantly

Engineering Contradiction:

Improvepaging reception reliabilityVSAvoidterminal power consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The terminal's receiving module is segmented into two independent parts: a low-power wake-up receiving module that continuously monitors for wake-up signals, and a main communication module that remains in sleep mode and only activates when needed. This segmentation allows the system to maintain paging reception capability while dramatically reducing power consumption during idle periods.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The network side device transmits a wake-up signal before the terminal needs to receive the actual paging message. This preliminary action triggers the terminal's main communication module to wake up in advance, ensuring it is ready to receive the paging message without requiring continuous monitoring, thus balancing timely reception with power savings.

Inventive Principle:

Principle #10Preliminary action

2Use of energy by moving object

If the terminal uses a low power wake-up receiving module to monitor LP-WUS, then energy consumption is reduced, but the complexity of the communication system increases

Engineering Contradiction:

Improveterminal energy consumptionVSAvoidcommunication system complexity

Core Design Contradiction:

Use of energy by moving objectVSDevice complexity

Solution Approach 1:

A wake-up signal mechanism is introduced as an intermediary between the network side device and the terminal's main communication module. This intermediary layer enables asynchronous communication where the terminal can remain in a low-power state while still being able to receive paging information, reducing the need for continuous synchronization and lowering overall system complexity despite the addition of the wake-up signal functionality.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS20260019994A1Paging method and communication device

Publication Date: 2026.01.15 VIVO MOBILE COMM CO LTD

AI summary

A paging method and a communication device are disclosed in the field of communication technologies. The paging method includes: receiving, by a first communication device, paging-related information transmitted by a second communication device, where the paging-related information is used for assisting the first communication device in paging a terminal by using a low power wake-up signal (LP-WUS), and the LP-WUS is used for carrying a paging message, or the LP-WUS indicates the terminal to receive a paging message transmitted by a network side device.