RRC State Mismatch Control in 5G IoT Networks

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Solution Overview

Problem

In next-generation communication systems, mismatches in radio resource control (RRC) states between user equipment (UE) and base stations (BS) can occur, leading to instability in communication environments.

Innovation Solution

The method involves identifying the network to access via a BS, receiving specific system information blocks (SIBs) containing access control information, and performing access control based on the received information, depending on the network type.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the UE and BS use different RRC states, then communication flexibility is improved, but communication stability deteriorates

Engineering Contradiction:
Improvecommunication flexibilityVSAvoidcommunication stability
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The patent implements a feedback mechanism where the UE sends an RRC state indication message to the BS to report its current RRC state. The BS uses this feedback information to determine whether to transmit downlink data, thereby preventing data transmission when states are mismatched and maintaining communication stability while preserving flexibility.

Inventive Principle:
Principle #23Feedback

2Speed

If access control information is not verified, then access speed is improved, but network stability deteriorates

Engineering Contradiction:
Improveaccess speedVSAvoidnetwork stability
Core Design Contradiction:
SpeedVSReliability

Solution Approach 1:

The patent applies preliminary action by having the UE perform access control verification before accessing the network. The UE checks access control information in system information blocks and verifies RRC state consistency with the BS before establishing communication, preventing unstable connections while maintaining efficient access.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS12328662B2Method and device for controlling RRC state mismatch issue in next-generation mobile communication system
Publication Date: 2025.06.10 SAMSUNG ELECTRONICS CO LTD
  • US12328662B2 patent drawing
  • US12328662B2 patent drawing
  • US12328662B2 patent drawing

AI summary

The present disclosure relates to a communication technique for converging IoT technology with a 5G communication system for supporting a higher data transmission rate beyond a 4G system, and a system therefor. The present disclosure may be applied to an intelligent service (for example, a smart home, a smart building, a smart city, a smart car or connected car, health care, digital education, retail business, a security and security-related service, etc.) on the basis of 5G communication technology and IoT-related technology. The present disclosure discloses a method and a device for controlling the RRC state mismatch issue of a terminal, and also discloses a method and a device for providing access control configuration information of a terminal.