Paging Occasion Adaptation for Low-Power UE Wake-Up

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Solution Overview

Problem

Existing wireless communication systems, particularly 5G NR, face challenges in optimizing network energy consumption through unnecessary wake-up operations by user equipment (UE), leading to inefficiencies in power usage.

Innovation Solution

Adapting paging occasion (PO) configurations and low power wake-up sequences (LP-WUS) to modify the low power wake-up signal (LO) configuration, allowing UE to monitor only relevant POs, thereby reducing unnecessary energy consumption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If UE monitors all configured paging occasions (POs) continuously, then network coverage and paging reliability are maintained, but energy consumption increases due to unnecessary wake-up operations

Engineering Contradiction:

ImproveUE energy consumptionVSAvoidpaging reliability

Core Design Contradiction:

Use of energy by moving objectVSReliability

Solution Approach 1:

The patent implements dynamic adaptation of PO configurations based on network conditions and UE activity patterns. The network can modify PO timing, frequency, and aggregation levels through RRC signaling, allowing the system to transition between aggressive energy-saving modes and reliable paging modes as conditions change. This dynamic reconfiguration resolves the contradiction by making monitoring behavior adaptive rather than static.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes multiple parameters including PO periodicity, PO offset, PO duration, and WUS configuration parameters to optimize the balance between energy consumption and paging reliability. By adjusting these parameters based on traffic patterns and network conditions, the system can reduce unnecessary wake-ups while maintaining adequate paging coverage, thus resolving the technical contradiction.

Inventive Principle:

Principle #35Parameter changes

2Measurement precision

If UE monitors POs with updated configurations, then paging detection accuracy improves, but device complexity increases due to configuration management

Engineering Contradiction:

Improvepaging detection accuracyVSAvoidconfiguration management complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent employs feedback mechanisms where the network monitors UE paging detection performance and adjusts PO configurations accordingly. The network receives feedback about missed pages or detection failures and modifies PO parameters to improve detection accuracy. This closed-loop feedback system resolves the contradiction by automatically optimizing detection precision without requiring complex UE-side analysis.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent enables the network to self-adjust PO configurations based on observed traffic patterns and paging success rates. The network autonomously modifies PO parameters without requiring complex UE participation in configuration management, thus improving detection accuracy while keeping device complexity manageable through network-centric control.

Inventive Principle:

Principle #25Self-service

3Loss of energy

If PO configurations are adapted frequently, then network energy efficiency improves, but signaling overhead increases

Engineering Contradiction:

Improvenetwork energy efficiencyVSAvoidsignaling overhead

Core Design Contradiction:

Loss of energyVSQuantity of substance

Solution Approach 1:

The patent implements periodic reevaluation and adaptation of PO configurations rather than continuous modification. The network evaluates the need for configuration changes at predetermined intervals or based on trigger events such as traffic pattern changes. This periodic approach allows the system to improve network energy efficiency through adaptation while limiting signaling overhead by avoiding unnecessary frequent reconfigurations.

Inventive Principle:

Principle #19Periodic action

4Use of energy by moving object

If UE monitors fewer POs to save energy, then energy consumption decreases, but paging coverage is reduced

Engineering Contradiction:

ImproveUE energy consumptionVSAvoidpaging coverage area

Core Design Contradiction:

Use of energy by moving objectVSArea of stationary object

Solution Approach 1:

The patent combines multiple POs into aggregated paging frames or bundles multiple WUS occasions together to provide comprehensive coverage. By merging monitoring opportunities across different time frequencies and aggregating PO resources, the system maintains extended paging coverage area while reducing the total number of individual POs each UE must monitor, thus resolving the contradiction between energy consumption and coverage area.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS20260082327A1Low power wake up sequence and network energy saving paging occasion adaptation

Publication Date: 2026.03.19 QUALCOMM INC

AI summary

The apparatus may be a wireless device such as a user equipment (UE) configured to receive a first PO configuration associated with a first LO configuration, receive a PO adaptation indication of an update to the first configuration of POs associated with one or more PFs, and monitor, based on the received PO adaptation indication, LOs according to an updated LO configuration associated with the updated first configuration of POs. The apparatus, in some aspects, may be a network device configured to transmit a first PO configuration associated with a first LO configuration, transmit a PO adaptation indication of an update to the first configuration of POs associated with one or more PFs, and transmit, based on the received PO adaptation indication, at least one LP-WUS based on an updated LO configuration associated with the updated first configuration of POs.