Interference Beam Measurement in 5G Wireless Communication

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Solution Overview

Problem

Current wireless communication systems, particularly in 5G networks, face challenges in accurately evaluating beam quality due to the inability to effectively measure interference from neighboring cells, which can lead to poor communication quality.

Innovation Solution

An electronic apparatus and method for wireless communications that determine resources in neighboring cells for interference beam measurement, report resource indicators to the serving cell's base station, and execute interference beam measurements based on configuration information, allowing for a more accurate assessment of beam quality considering interference.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If L1-RSRP measurement is used for beam selection, then beam quality assessment is simplified, but interference from neighboring cells cannot be reflected

Engineering Contradiction:

Improvebeam quality assessmentVSAvoidinterference measurement

Core Design Contradiction:

Ease of operationVSMeasurement precision

Solution Approach 1:

The patent segments the measurement process into two distinct parts: L1-RSRP measurement for serving cell beam quality and L1-RSSI measurement for interference from neighboring cells. This segmentation allows each measurement to focus on its specific purpose, with RSRP evaluating serving beam quality and RSSI capturing total received power including interference, thereby resolving the contradiction between measurement simplicity and interference detection accuracy.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces L1-RSSI as an intermediary measurement that captures the total received power including both serving cell signal and neighboring cell interference. This intermediary metric bridges the gap between simple RSRP measurement and the need for interference awareness, enabling the system to assess both serving beam quality and interference levels without directly measuring interference separately.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Measurement precision

If high-level interference measurement mechanism is used for mobility management, then interference can be measured, but measurement and reporting period is too long for beam management

Engineering Contradiction:

Improveinterference measurementVSAvoidmeasurement and reporting period

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The patent changes the measurement parameters by introducing L1-RSSI with a shorter measurement and reporting period specifically for beam management purposes. While high-level interference measurement uses longer periods suitable for mobility management, L1-RSSI operates with faster timing appropriate for beam-level operations, thus resolving the time loss issue while maintaining measurement precision through the appropriate parameter selection.

Inventive Principle:

Principle #35Parameter changes

3Reliability

If beam with higher L1-RSRP is selected, then serving beam quality appears better, but interferences from neighboring cell may be stronger

Engineering Contradiction:

Improveserving beam qualityVSAvoidinterference from neighboring cell

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent implements feedback by having the UE report both L1-RSRP and L1-RSSI measurements to the network. The network uses these feedback measurements to make informed beam selection decisions, considering both serving beam quality (RSRP) and interference levels (RSSI). This feedback mechanism allows the system to avoid selecting beams that appear good based on RSRP alone but actually suffer from strong neighboring cell interference.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent replaces the simple mechanical beam selection based solely on L1-RSRP threshold comparison with a more sophisticated evaluation that incorporates L1-RSSI measurements. Instead of directly selecting the beam with highest RSRP, the system substitutes this simple mechanism with a combined evaluation that factors in interference levels, thereby reducing the harmful effect of neighboring cell interference on beam selection reliability.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS12317111B2Electronic device and method for wireless communication, and computer-readable storage medium

Publication Date: 2025.05.27 SONY GROUP CORP

AI summary

Provided are an electronic device and method for wireless communication, and a computer-readable storage medium. The electronic device comprises: a processing circuit configured to determine a resource, which is expected to be used for interference beam measurement and which is used for sending a reference signal, of a neighbor cell, wherein the interference beam measurement is used for measuring the degree of interference of a transmitted beam of the neighbor cell in a serving cell; report a resource indicator of the determined resource to a base station of the serving cell; and execute interference beam measurement on the basis of configuration information from the base station.