PLMN-Specific Radio Resource Configuration for Multi-Operator Sharing

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Solution Overview

Problem

Existing radio communication systems face challenges in performing flexible communication operations between multiple operators due to limitations in configuring resources and measurements based on Public Land Mobile Network (PLMN) IDs, which hinders efficient frequency utilization and communication quality.

Innovation Solution

A radio communication apparatus and method that supports independent configurations for synchronization signals, random access channels, and resource allocation based on specific PLMN IDs, enabling flexible operations by associating parameters like STC, SMTC, RACH, and resource availability with PLMN IDs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If resource sharing is implemented between multiple operators, then frequency utilization efficiency is improved, but communication operation flexibility is reduced

Engineering Contradiction:

Improvefrequency utilization efficiencyVSAvoidcommunication operation flexibility

Core Design Contradiction:

ProductivityVSAdaptability or versatility

Solution Approach 1:

The patent segments the frequency resource configuration by introducing PLMN-ID-specific parameters (synchronizationSignalBlockPeriodicityList, ssb-PositionsInBurstList, rach-OccasionList, etc.). Each operator's PLMN ID is associated with dedicated configuration sets, allowing independent optimization of synchronization signals, random access channels, and resource allocation while maintaining overall resource sharing infrastructure.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent adds a new dimension of differentiation by introducing PLMN ID as an additional configuration parameter. Instead of uniform resource sharing, the system now operates in a multi-dimensional space where resources are allocated based on both operator identity (PLMN ID) and traditional resource parameters, enabling flexible slicing of frequency resources per operator.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Device complexity

If uniform configuration is used for all operators, then system complexity is reduced, but communication quality enhancement is suppressed

Engineering Contradiction:

Improvesystem configuration complexityVSAvoidcommunication quality

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The patent applies local quality by allowing different configuration parameters (synchronization signal periodicity, SS/PBCH block positions, RACH occasions, resource availability) to be customized per PLMN ID. Each operator can optimize their specific configuration parameters according to their service requirements while sharing the same physical infrastructure, achieving operator-specific quality enhancement without complete system duplication.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS20250280360A1Radio communication apparatus and radio communication method

Publication Date: 2025.09.04 NTT DOCOMO INC

AI summary

A radio communication apparatus according to an aspect of the present disclosure includes: a receiving section that receives specific configuration information associated with a Public Land Mobile Network (PLMN) ID; and a control section that controls, based on the configuration information, at least one of measurement associated with the PLMN ID, random access associated with the PLMN ID, and determination of a resource associated with the PLMN ID. An aspect of the present disclosure allows flexible communication operations to be performed between operators.