Wake-Up Signal Monitoring for Low-Power 5G Mode Transition

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing communication technologies lack clear methods for notifying a transition to a low power mode during which wake-up signal monitoring is performed, leading to inefficiencies in power consumption and latency, particularly in 5G devices.

Innovation Solution

A method for determining and transitioning to a low power mode is implemented, where a terminal device monitors a wake-up signal, and a network device can request or inform the terminal device to enter this mode through various communication channels, including RRC release messages, paging messages, and dedicated low power control channels.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If the terminal device enters low power mode with WUS monitoring, then power consumption is reduced, but the method for notifying transition is unclear

Engineering Contradiction:

Improvepower consumptionVSAvoidnotification clarity

Core Design Contradiction:

Use of energy by moving objectVSLoss of information

Solution Approach 1:

The patent introduces a wake-up signal receiver as an intermediary component that operates independently from the main radio. This mediator handles WUS monitoring specifically, allowing the main radio to remain off while still enabling clear notification mechanisms through dedicated signaling channels (RRC release messages, paging messages, or dedicated low power control channels) that clearly indicate transition to and from low power mode

Inventive Principle:

Principle #24Intermediary (Mediator)

2Use of energy by moving object

If the main radio is switched off and WUS receiver is switched on, then power consumption is reduced, but transition notification mechanism is insufficient

Engineering Contradiction:

Improvepower consumptionVSAvoidtransition notification mechanism

Core Design Contradiction:

Use of energy by moving objectVSDevice complexity

Solution Approach 1:

The patent segments the communication device into two distinct functional parts: the main radio (switched off during low power mode) and the wake-up signal receiver (remains on). This segmentation allows the notification mechanism to be simplified by using dedicated signaling channels that only need to communicate with the WUS receiver, reducing overall system complexity while maintaining clear transition notifications

Inventive Principle:

Principle #1Segmentation

3Use of energy by moving object

If WUS monitoring is performed in low power mode, then power efficiency is improved, but latency may increase due to unclear transition notification

Engineering Contradiction:

Improvepower efficiencyVSAvoidlatency

Core Design Contradiction:

Use of energy by moving objectVSLoss of time

Solution Approach 1:

The patent implements preliminary action by sending notification messages (RRC release messages, paging messages, or dedicated low power control channel messages) that clearly indicate the transition to low power mode before the device actually enters it. This advance notification allows the device to prepare for the transition, ensuring that when it wakes up, it can quickly resume normal operation without unnecessary delays, thus reducing latency while maintaining power efficiency

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS20260032591A1Method, device and computer storage medium of communication

Publication Date: 2026.01.29 NEC CORP

AI summary

Embodiments of the present disclosure relate to methods, devices and computer readable media of communication. A terminal device determines whether to apply a low power mode during which a wake-up signal monitoring is performed. Based on a determination of applying the low power mode, the terminal device performs an operation associated with the low power mode. In this way, notification of a transition of a LP mode may be achieved.