Terminal Wakeup Indication Segmentation for Reliable DRX Detection

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Terminal devices fail to wake up when required due to missed wakeup indications, leading to data receiving and sending delays.

Innovation Solution

Implementing a dual wakeup indication system, comprising a first and second wakeup indication, to ensure terminal devices correctly detect when to wake up, reducing the likelihood of missed wakeup signals.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a single wakeup indication mechanism is used, then the system complexity is low, but the reliability of wake-up detection is insufficient leading to data delays

Engineering Contradiction:

Improvewake-up detection reliabilityVSAvoidwakeup indication system complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent divides the single wakeup indication into two separate indications: first wakeup indication (carried by PDCCH) and second wakeup indication (carried by PDSCH). This segmentation allows the system to use multiple independent detection paths, improving reliability while maintaining manageable complexity through clear functional separation of the two indication mechanisms.

Inventive Principle:

Principle #1Segmentation

2Use of energy by moving object

If the terminal device enters sleep state frequently, then power consumption is reduced, but data receiving and sending delay increases when wakeup is required

Engineering Contradiction:

Improveterminal device power consumptionVSAvoiddata receiving and sending delay

Core Design Contradiction:

Use of energy by moving objectVSLoss of time

Solution Approach 1:

The network device sends the wakeup indication to the terminal device before the terminal device needs to wake up. This preliminary action allows the terminal device to prepare for wake-up in advance, ensuring timely data reception while maintaining sleep state for extended periods, thus balancing power consumption and response time.

Inventive Principle:

Principle #10Preliminary action

3Reliability

If the terminal device monitors PDCCH continuously, then data reception reliability is high, but power consumption increases

Engineering Contradiction:

Improvedata reception reliabilityVSAvoidterminal device power consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent implements discontinuous reception (DRX) mechanism where the terminal device periodically wakes up to monitor PDCCH and then enters sleep state. Combined with the two-stage wakeup indication system, the terminal only performs full PDCCH monitoring when wakeup indications are detected, achieving periodic monitoring that balances reliability and power consumption.

Inventive Principle:

Principle #19Periodic action

Data Source

PatentUS12363637B2Terminal device wakeup method and apparatus, network device, and terminal device

Publication Date: 2025.07.15 HUAWEI TECH CO LTD

AI summary

The present disclosure relates to terminal device wakeup methods and apparatus, network devices, and terminal devices. One example method includes receiving, by a first terminal device, configuration information of a first wakeup indication from a network device, where the first wakeup indication is used to indicate whether the first terminal device is to wake up, detecting, by the first terminal device, the first wakeup indication based on the configuration information, and in response to that the first wakeup indication is not detected, waking up, by the first terminal device, when the configuration information comprises first indication information. The first indication information is used to indicate the first terminal device to wake up when the first wakeup indication is not detected.