Multi-TRP CSI Measurement for Non-Serving Cell Interference

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Solution Overview

Problem

Existing wireless communication systems lack the capability for user equipment (UE) to effectively process and manage interference from non-serving cells, limiting interference management and network optimization.

Innovation Solution

UEs and base stations are configured to evaluate signals from non-serving transmission/reception points (TRPs) to obtain measurement results, enabling improved interference management and network operation through reporting and filter selection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the UE is configured to evaluate signals from non-serving TRPs, then interference management capability is improved, but device complexity increases

Engineering Contradiction:

Improveinterference management capabilityVSAvoidsignal evaluation complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent segments the signal evaluation process into distinct components: identifying non-serving TRPs, evaluating their signals on specific resource elements, and generating measurement reports. This segmentation allows the UE to handle complex interference management by breaking it down into manageable steps, each handled by specialized processing units.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces measurement reports as an intermediary mechanism between the UE and the network. These reports convey interference information from the UE to the network entities, enabling coordinated interference management without requiring the UE to directly control all network parameters. The measurement report acts as a mediator that facilitates information exchange and coordinated action.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Productivity

If multiple distinguishable signals are transmitted simultaneously from different TRDs, then network capacity is improved, but signal differentiation difficulty increases

Engineering Contradiction:

Improvenetwork capacityVSAvoidsignal differentiation difficulty

Core Design Contradiction:

ProductivityVSDifficulty of detecting and measuring

Solution Approach 1:

The patent applies local quality by assigning different characteristics to signals from different TRDs. Each TRD transmits signals with distinctive properties (such as different reference signal configurations or resource element mappings) that enable the UE to locally identify and differentiate between them. This allows multiple signals to coexist without mutual interference in the measurement process.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent uses signal differentiation mechanisms analogous to color changes - each TRD employs unique identifying characteristics (such as specific reference signal patterns or modulation properties) that allow the UE to visually distinguish (detect) between different TRD signals. This differentiation enables simultaneous transmission from multiple TRDs while maintaining measurable distinction between their signals.

Inventive Principle:

Principle #32Color changes

Data Source

PatentUS20260032502A1CSI and Multi-TRP

Publication Date: 2026.01.29 FRAUNHOFER GESELLSCHAFT ZUR FORDERUNG DER ANGEWANDTEN FORSCHUNG EV

AI summary

A device such as a base station or a user equipment, UE, is configured for operating in a wireless communication network. The device is configured for evaluating a set of resource elements, RE, of the wireless communication network for a reception of a signal transmitted from a transmission/reception device, TRD, not serving the device to obtain a measurement result and is configured for providing a report based on the measurement result; or configured for using the measurement result for future operation of the device in the wireless communication network.