UE Beam Reporting for sTRP-mTRP Switching Overhead

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Solution Overview

Problem

Existing communication systems face challenges in efficiently managing beam switching between single and multi-transmission reception points (sTRP and mTRP) due to increased signaling overhead and suboptimal load on beam management mechanisms.

Innovation Solution

A user equipment (UE) is configured to provide event-based reporting when specific beam management conditions are met, allowing it to initiate a switch between sTRP and mTRP modes based on signal quality metrics, thereby reducing unnecessary reporting and optimizing communication modes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of energy

If event-based reporting is implemented for beam management, then signaling overhead is reduced, but the complexity of detecting and evaluating beam conditions increases

Engineering Contradiction:

Improvesignaling overheadVSAvoidbeam condition detection

Core Design Contradiction:

Loss of energyVSDifficulty of detecting and measuring

Solution Approach 1:

The UE autonomously detects beam management conditions and triggers reports without continuous network scheduling. The device self-evaluates beam quality metrics (RSRP, SINR) against configured thresholds and autonomously initiates reporting when conditions are met, reducing network signaling overhead while maintaining accurate beam management

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The system changes the reporting parameter from continuous periodic reporting to event-triggered reporting based on beam quality thresholds. When beam conditions (signal quality, interference levels) change beyond configured thresholds, the reporting behavior changes from silent to active, optimizing the balance between overhead reduction and detection accuracy

Inventive Principle:

Principle #35Parameter changes

2Speed

If the UE autonomously manages beam switching, then beam switching speed improves, but the risk of suboptimal beam selection increases

Engineering Contradiction:

Improvebeam switching speedVSAvoidbeam selection optimality

Core Design Contradiction:

SpeedVSReliability

Solution Approach 1:

The UE continuously monitors beam quality metrics (RSRP, SINR, interference) and provides feedback reports to the network when predetermined conditions are met. This feedback mechanism enables fast autonomous beam switching while maintaining reliability through network validation of the reported beam conditions and selection criteria

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The network pre-configures the UE with beam management parameters including quality thresholds, reporting criteria, and candidate beam information before autonomous operation begins. This preliminary configuration ensures the UE has the necessary reference data to make reliable beam selection decisions autonomously without real-time network intervention

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentEP4701090A1Method, apparatus and computer program

Publication Date: 2026.02.25 NOKIA TECHNOLOGIES OY

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AI summary

There is provided an apparatus, method, and computer program for causing an apparatus to perform: reporting, to a network access node, a report indicating that the apparatus has detected that at least one beam management-related condition has been met for a multi-transmission reception point, mTRP, mode of communication, wherein the report comprises an indication that indicates whether a first transmission mode or a second transmission mode is preferred for said modes of communication.