Base Station Beam Information Control for Interference Suppression

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Solution Overview

Problem

Existing base station devices do not effectively suppress inter-beam interference, which can occur when beams transmitted by one base station device interfere with communication between another base station device and a terminal device.

Innovation Solution

A base station device is equipped with a control unit that receives acquisition requests for beam information related to a PDU session with a terminal device and transmits beam group information, including relevant beam information, to an Application Function (AF) node via an API, enabling interference control.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If beamforming is performed by a base station device to suppress interference with terminal devices, then interference with non-communicating terminal devices is reduced, but inter-beam interference between base station devices occurs

Engineering Contradiction:

Improveinterference with terminal deviceVSAvoidinter-beam interference

Core Design Contradiction:

Object-affected harmful factorsVSObject-generated harmful factors

Solution Approach 1:

The base station device transmits beam information to the Application Function node, which uses this feedback to determine PDU session maintenance or release decisions, thereby coordinating beam usage across multiple base stations to prevent inter-beam interference

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The Application Function node acts as an intermediary between base station devices, receiving beam information from one base station and using it to control PDU sessions that may cause interference to other base stations' beams

Inventive Principle:

Principle #24Intermediary (Mediator)

2Object-affected harmful factors

If beam information is transmitted to Application Function node to enable interference control, then inter-beam interference is suppressed, but system complexity increases

Engineering Contradiction:

Improveinter-beam interferenceVSAvoidsystem complexity

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The interference control function is extracted from the base station device and relocated to the Application Function node, which makes the PDU session maintenance or release decisions based on received beam information, thereby simplifying the base station device while maintaining interference control capability

Inventive Principle:

Principle #2Taking out (Extraction)

Data Source

PatentUS12309611B2Base station device, application function node, and communication method

Publication Date: 2025.05.20 SONY GROUP CORP

AI summary

A base station device (20) includes a control unit (23). The control unit (23) performs operations including: receiving an acquisition request, which is a request for acquiring beam information related to a PDU session established with a terminal device (40); andtransmitting beam group information including at least one piece of the beam information, the transmission being performed in association with the PDU session in response to the acquisition request.