Paging Resource Timing for UE Power Saving Signal Reception

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Solution Overview

Problem

Existing communication systems face challenges in optimizing power consumption for terminal devices, particularly in scenarios where UEs need to monitor for paging messages, as current DRX mechanisms do not adequately address the power-saving needs of UEs in idle or inactive states, leading to inefficient power usage.

Innovation Solution

A method for determining a time interval between a power saving signal and a paging resource, allowing terminal devices to correctly receive power saving signals, which includes determining and sending a time interval for detecting the power saving signal, and using this interval to perform time-frequency synchronization before the paging occasion, thereby optimizing power consumption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the terminal device continuously monitors paging resources to ensure reliable communication, then the reliability of message reception is improved, but the power consumption increases

Engineering Contradiction:

Improvemessage reception reliabilityVSAvoidterminal power consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The terminal device performs discontinuous monitoring of paging resources based on DRX cycles, switching between active monitoring states and sleep states periodically. This allows the device to maintain reliable message reception during active periods while reducing power consumption during sleep periods, directly resolving the contradiction between reliability and energy usage.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The terminal device performs time-frequency synchronization and monitors power saving signals before entering the paging occasion. By preparing in advance during the active period, the device ensures reliable reception setup is complete before transitioning to sleep mode, maintaining reliability while enabling extended sleep periods for power saving.

Inventive Principle:

Principle #10Preliminary action

2Use of energy by moving object

If the terminal device enters discontinuous reception state to save power, then the power consumption is reduced, but the ability to receive power saving signals correctly deteriorates

Engineering Contradiction:

Improveterminal power consumptionVSAvoidpower saving signal reception accuracy

Core Design Contradiction:

Use of energy by moving objectVSReliability

Solution Approach 1:

The device alternates between active monitoring periods and sleep periods in a structured DRX cycle. During active periods, it performs necessary synchronization and signal reception; during sleep periods, it conserves power. This periodic pattern ensures the device is awake and capable of correct signal reception at appropriate intervals while maintaining power savings.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

Before entering the discontinuous reception state, the terminal device performs time-frequency synchronization and checks for power saving signals. By completing these preparatory actions in advance during the active period, the device ensures it has the necessary synchronization information to correctly receive signals when it wakes up, preventing signal reception errors that would occur if it entered sleep state without proper preparation.

Inventive Principle:

Principle #10Preliminary action

3Measurement precision

If the terminal device performs time-frequency synchronization before paging occasion, then the accuracy of signal reception is improved, but the time required for power saving is reduced

Engineering Contradiction:

Improvesignal reception accuracyVSAvoidpower saving duration

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The terminal device performs time-frequency synchronization and power saving signal monitoring as preliminary actions before entering the paging occasion and transitioning to sleep state. By completing these accuracy-critical operations in advance, the device ensures high signal reception accuracy is achieved before the extended power-saving sleep period begins, maximizing both precision and power savings.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The device structures its operation into periodic cycles where synchronization and signal monitoring occur at specific intervals before sleep periods. This periodic pattern ensures that time-frequency accuracy is maintained through regular updates while allowing maximum duration sleep periods in between, balancing reception precision with power saving duration.

Inventive Principle:

Principle #19Periodic action

Data Source

PatentUS12471023B2Resource determination method, terminal device, and network device

Publication Date: 2025.11.11 GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD

AI summary

The present application relates to a resource determination method, a terminal device, and a network device. The resource determination method comprises: a terminal device determining a time interval between a time-domain resource and a paging resource of an energy saving signal; and on the basis of the time interval, the terminal device determining a time-domain resource for detecting the energy saving signal. According to the embodiments of the present application, by means of determining a time interval between a time-domain resource and a paging resource of an energy saving signal, a terminal device can correctly receive the energy saving signal.