L1 Measurement Reporting Triggers for Low-Signaling Mobility

Solution Overview

Problem

Existing wireless communication systems face inefficiencies in event-based Layer 1 (L1) measurement reporting due to undefined triggering events and start/stop conditions, leading to excessive signaling and power consumption in User Equipment (UE) during Layer 1/2-triggered mobility (LTM), which degrades performance.

Innovation Solution

The UE measures Layer 1 metrics in candidate cells and determines if they satisfy triggering event conditions based on comparisons with serving cell metrics, thresholds, or changes, transmitting L1 measurement reports only when specific conditions are met, using a configuration provided by the network node to manage start/stop conditions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If event-based L1 measurement reporting is implemented without defined triggering events and start/stop conditions, then measurement reporting functionality is provided, but excessive signaling and power consumption occur in UE

Engineering Contradiction:

Improvemeasurement reporting functionalityVSAvoidpower consumption

Core Design Contradiction:

ProductivityVSLoss of energy

Solution Approach 1:

The patent defines specific triggering event conditions (e.g., when L1 metric changes exceed a threshold, or when specific event types occur) that change the operational parameters of measurement reporting from continuous to event-driven, thereby reducing power consumption while maintaining necessary functionality

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent introduces dynamic start and stop conditions for measurement reporting based on triggering events, allowing the reporting mechanism to be activated only when necessary rather than operating continuously, thus reducing energy loss while maintaining productivity

Inventive Principle:

Principle #15Dynamics

2Productivity

If event-based L1 measurement reporting is implemented without defined triggering events and start/stop conditions, then measurement reporting functionality is provided, but excessive signaling occurs

Engineering Contradiction:

Improvemeasurement reporting functionalityVSAvoidsignaling

Core Design Contradiction:

ProductivityVSQuantity of substance

Solution Approach 1:

The patent defines specific triggering event conditions (e.g., when L1 metric changes exceed a threshold, or when specific event types occur) that change the operational parameters of measurement reporting from continuous to event-driven, thereby reducing signaling overhead while maintaining necessary functionality

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent introduces dynamic start and stop conditions for measurement reporting based on triggering events, allowing the reporting mechanism to be activated only when necessary rather than operating continuously, thus reducing excessive signaling while maintaining productivity

Inventive Principle:

Principle #15Dynamics

3Speed

If L1 measurement reports are transmitted continuously without event-based triggering, then timely reporting is achieved, but power consumption and signaling increase

Engineering Contradiction:

Improvereporting timelinessVSAvoidpower consumption

Core Design Contradiction:

SpeedVSLoss of energy

Solution Approach 1:

The patent implements periodic measurement with event-based triggering, where measurements are taken continuously but reports are transmitted only when specific events occur, maintaining timeliness of detection while reducing power consumption through selective reporting

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The patent changes the reporting parameter from continuous transmission to event-triggered transmission, allowing timely detection of important changes while reducing overall power consumption by not transmitting during normal conditions

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS12563463B2Event-based layer 1 measurement reporting

Publication Date: 2026.02.24 QUALCOMM INC

AI summary

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may measure a layer 1 (L1) metric in a candidate cell associated with a layer 1 or layer 2 triggered mobility (LTM). The UE may determine that the L1 metric in the candidate cell satisfies a triggering event condition. The UE may transmit, to a network node, an L1 measurement report based at least in part on the L1 metric in the candidate cell satisfying the triggering event condition. Numerous other aspects are described.