DRX Power Saving Switching Before On-Duration in Terminals

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Solution Overview

Problem

The existing BWP switching delays and interruptions in Discontinuous Reception (DRX) cycles cause increased data transmission delay and power consumption for terminals.

Innovation Solution

Perform a switching operation to a target power saving mode at a first moment before the on duration of a DRX cycle, with network-side indication and terminal execution, to minimize BWP switching delays and power consumption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If BWP switching is performed during DRX cycle to enable efficient data transmission, then data transmission efficiency is improved, but transmission delay and power consumption increase

Engineering Contradiction:

Improvedata transmission efficiencyVSAvoidtransmission delay

Core Design Contradiction:

ProductivityVSLoss of time

Solution Approach 1:

The patent applies preliminary action by performing BWP switching before the DRX on-duration starts. Specifically, the network device sends indication information to trigger BWP switching at a timing that ensures the switching is completed before the terminal needs to receive data during the on-duration, thereby eliminating switching delay from the data transmission path while maintaining power saving benefits

Inventive Principle:

Principle #10Preliminary action

2Productivity

If BWP switching is performed during DRX cycle to enable efficient data transmission, then data transmission efficiency is improved, but power consumption increases

Engineering Contradiction:

Improvedata transmission efficiencyVSAvoidpower consumption

Core Design Contradiction:

ProductivityVSUse of energy by moving object

Solution Approach 1:

The patent applies preliminary action by performing BWP switching before the DRX on-duration starts. The network device sends indication information to trigger BWP switching at a timing that ensures the switching is completed before the terminal needs to receive data during the on-duration, thereby eliminating switching delay from the data transmission path while maintaining power saving benefits

Inventive Principle:

Principle #10Preliminary action

3Adaptability or versatility

If BWP switching is performed during DRX cycle, then data transmission capability is improved, but switching interruption increases

Engineering Contradiction:

Improvedata transmission capabilityVSAvoidswitching interruption

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent applies preliminary action by performing BWP switching before the DRX on-duration starts. The network device sends indication information to trigger BWP switching at a timing that ensures the switching is completed before the terminal needs to receive data during the on-duration, thereby eliminating switching interruption during data transmission while maintaining the ability to switch BWPs when needed

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS12557019B2Power saving mode switching method, terminal, and network side device

Publication Date: 2026.02.17 VIVO MOBILE COMM CO LTD

AI summary

A power saving mode switching method, a terminal, and a network side device are provided. The power saving mode switching method, which may be performed by the terminal, includes: perform a switching operation at a first moment before on duration of a DRX cycle, where the switching operation is used to switch a first cell of the terminal to a target power saving mode.