Carrier-Group DRX Wake Control for Lower UE Power Use

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Solution Overview

Problem

The combination of two DRX configurations and a wake-up signal in 5G mobile communication is not effectively utilized, limiting the flexibility of base station configuration and hindering the reduction of user equipment (UE) power consumption.

Innovation Solution

Implementing a method where a terminal device configures carriers into two groups, each with distinct DRX configurations, and determines whether to monitor DCP on one group while waking up or sleeping on the other group based on specific rules or network indications, thereby optimizing power consumption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the UE monitors DCP on all carrier groups, then the network scheduling flexibility is improved, but the UE power consumption increases

Engineering Contradiction:

Improvenetwork scheduling flexibilityVSAvoidUE power consumption

Core Design Contradiction:

Adaptability or versatilityVSUse of energy by moving object

Solution Approach 1:

The patent divides carriers into two groups (first group and second group) with different DRX configurations. The UE monitors DCP only on the first group of carriers while skipping monitoring on the second group, segmenting the monitoring task to reduce power consumption while maintaining scheduling flexibility through selective monitoring.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different DRX configurations are applied to different carrier groups. The first group of carriers uses a first DRX configuration with monitoring, while the second group uses a second DRX configuration without monitoring, allowing local optimization of power consumption based on carrier group characteristics.

Inventive Principle:

Principle #3Local quality

2Use of energy by moving object

If two DRX configurations are used without wake-up signal combination, then the power saving function is improved, but the base station configuration flexibility deteriorates

Engineering Contradiction:

ImproveUE power saving functionVSAvoidbase station configuration flexibility

Core Design Contradiction:

Use of energy by moving objectVSAdaptability or versatility

Solution Approach 1:

The patent combines two DRX configurations with wake-up signal monitoring in a unified framework. The base station can configure the UE to monitor DCP on the first group of carriers and skip monitoring on the second group, merging multiple power saving mechanisms to achieve both flexibility and power efficiency.

Inventive Principle:

Principle #5Merging (Combining)

3Use of energy by moving object

If the UE skips DCP monitoring on one carrier group, then the power consumption is reduced, but the monitoring reliability may deteriorate

Engineering Contradiction:

ImproveUE power consumptionVSAvoidDCP monitoring reliability

Core Design Contradiction:

Use of energy by moving objectVSReliability

Solution Approach 1:

The patent implements a feedback mechanism where the UE reports its DRX configuration and monitoring status to the network. The network uses this feedback to adjust scheduling decisions, ensuring that skipping DCP monitoring on the second group of carriers does not compromise reliability through improper network assumptions.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS12495465B2Communication method and device

Publication Date: 2025.12.09 HUAWEI TECH CO LTD

AI summary

This disclosure relates to a communication method and a device. When a terminal device determines not to monitor DCP on a first DCP monitoring occasion, the terminal device wakes up on a first group of carriers within first DRX on duration associated with the first DCP monitoring occasion, and wakes up or sleeps on a second group of carriers within second DRX on duration associated with the first DCP monitoring occasion. The first group of carriers includes one or more carriers configured for the terminal device, a first DRX configuration is applied to the first group of carriers, the first DRX on duration corresponds to the first DRX configuration, the second group of carriers includes one or more carriers configured for the terminal device, a second DRX configuration is applied to the second group of carriers, and the second DRX on duration corresponds to the second DRX configuration.