Base Station Cell Group Interference Coordination

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Solution Overview

Problem

Current full-duplex solutions in Rel-18 primarily focus on base stations, leading to strong cross-link interference between base stations, which is not effectively managed as measurement and coordination are limited to terminal sides.

Innovation Solution

An interference coordination method and apparatus that allows base stations to determine their cell groups and perform full-duplex operations based on target configuration information, thereby coordinating cross-link interference within the cell group.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If base stations adopt full-duplex mechanism, then communication efficiency is improved, but cross-link interference between base stations increases

Engineering Contradiction:

Improvecommunication efficiencyVSAvoidcross-link interference

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent segments base stations into different cell groups based on their full-duplex operation characteristics and interference relationships. By dividing the network into multiple cell groups, the system can apply different configuration information to different groups, thereby managing cross-link interference more effectively while maintaining full-duplex operation benefits within each group.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent changes operational parameters by introducing configuration information that specifies full-duplex operation modes for different cell groups. This parameter change allows base stations to adjust their transmission and reception behavior based on their group membership, reducing cross-link interference while preserving communication efficiency.

Inventive Principle:

Principle #35Parameter changes

2Adaptability or versatility

If base stations perform full-duplex operation independently, then operational flexibility is improved, but interference coordination capability deteriorates

Engineering Contradiction:

Improveoperational flexibilityVSAvoidinterference coordination capability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent introduces an intermediary mechanism through cell group configuration information that mediates between individual base station operational flexibility and network-wide interference coordination. This intermediary layer allows base stations to maintain operational independence while being guided by centralized configuration to achieve coordinated interference management.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent adds a new dimension to interference coordination by organizing base stations into cell groups rather than treating them as individual units. This dimensional change from individual-based to group-based coordination enables simultaneous operational flexibility at the individual level and coordinated interference management at the group level.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Data Source

PatentUS20250071790A1Interference coordination method, apparatus, and storage medium

Publication Date: 2025.02.27 BEIJING XIAOMI MOBILE SOFTWARE CO LTD

AI summary

An interference coordination method is performed by a first base station, and includes: determining a cell group to which the first base station belongs; and performing a full-duplex operation based on target configuration information; wherein the target configuration information indicates configuration information for base stations in the cell group to which the first base station belongs to perform the full-duplex operation.