Wireless Communication MCC Retention for Efficient PLMN Selection

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Solution Overview

Problem

Existing communication systems fail to effectively manage, control, and utilize Mobile Country Code (MCC) information, leading to inefficient power usage, wasted signaling radio resources, and unreliable network registration in user equipment (UE).

Innovation Solution

Implementing a user equipment (UE) and network device that manage and retain MCC information, allowing for improved power saving and reliable communication by retaining MCC information across location changes and using it for PLMN selection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the network node lets NAS procedure proceed without MCC information management, then UE location determination can be initiated, but power consumption increases and signaling radio resources are wasted

Engineering Contradiction:

ImproveUE location determination reliabilityVSAvoidUE power consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The network node performs preliminary action by providing MCC information to the UE before the UE actually needs to perform location determination. This allows the UE to use the provided MCC information for PLMN selection and registration, avoiding unnecessary location determination procedures and associated power consumption while maintaining reliable network registration.

Inventive Principle:

Principle #10Preliminary action

2Productivity

If the network node provides MCC information to UE, then PLMN selection can be optimized, but the complexity of managing and controlling MCC information increases

Engineering Contradiction:

ImprovePLMN selection efficiencyVSAvoidMCC information management complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The network node extracts and provides only the necessary MCC information to the UE, rather than requiring the UE to manage comprehensive MCC databases. This extraction approach simplifies UE complexity while enabling efficient PLMN selection through the provided MCC information.

Inventive Principle:

Principle #2Taking out (Extraction)

3Use of energy by moving object

If the UE retains MCC information across location changes, then power saving is improved, but the accuracy of location-based network selection may be compromised

Engineering Contradiction:

ImproveUE power savingVSAvoidLocation-based network selection accuracy

Core Design Contradiction:

Use of energy by moving objectVSMeasurement precision

Solution Approach 1:

The network node provides feedback by indicating whether the UE is in a location where the provided MCC information is valid. This feedback mechanism allows the UE to retain MCC information for power saving while ensuring accurate network selection by only using the information when the network confirms its validity for the current location.

Inventive Principle:

Principle #23Feedback

Data Source

PatentEP4245067B1Apparatus and method of wireless communication

Publication Date: 2025.07.30 GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD

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AI summary

Apparatuses and methods of wireless communication are provided. A method by a user equipment (UE) includes being configured with a mobile country code (MCC) information from a network device and retaining the MCC information even if the UE moves out of a country or a region where the MCC information is provided. This can solve issues in the prior art, provide a method on management, control, and/or use of MCC information, improve power saving, provide saving of wasted signalling radio resources, provide a good communication performance, and/or provide high reliability.