Sidelink Signaling Bearer Integrity Failure Handling

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Solution Overview

Problem

Existing technologies lack effective methods for handling integrity protection failures in sidelink signaling bearers, leading to low security in New Radio (NR) sidelink communication.

Innovation Solution

Implement a security control operation in user equipment upon receiving an integrity check failure indication for a sidelink signaling bearer, including releasing related bearers or connections, discarding configuration information, stopping timers, and reporting failure to network and peer devices.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If integrity check is performed for sidelink signaling bearer transmission, then security of signaling transmission is improved, but there is no handling method for integrity check failure leading to low security

Engineering Contradiction:

Improvesecurity of signaling transmissionVSAvoidhandling method availability

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The patent establishes security control operations to be executed in advance when integrity check failure occurs. The method pre-defines multiple handling options (releasing bearer, discarding configuration, stopping timers, reporting failure) that are ready to be implemented immediately upon detecting an integrity check failure, ensuring security is maintained without operational delays

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent implements a feedback mechanism where the result of integrity check is fed back to trigger appropriate security control operations. When integrity check failure is detected, the system responds by executing predetermined security measures, creating a closed-loop security management system that continuously monitors and responds to security threats

Inventive Principle:

Principle #23Feedback

2Reliability

If security control operations are implemented upon integrity check failure, then security of sidelink communication is improved, but device complexity increases

Engineering Contradiction:

Improvesecurity of sidelink communicationVSAvoidsecurity control operation complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent segments the security control operations into distinct, independent actions: releasing bearer, discarding configuration, stopping timers, and reporting failure. Each operation can be independently selected and executed based on the specific failure scenario, making the complex security management task more manageable and implementable

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent changes the state parameters of the communication system in response to integrity check failure. By modifying parameters such as bearer state, configuration status, timer status, and reporting state, the system achieves security control through parameter management rather than complex operational procedures

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentEP4152789B1Integrity protection failure handling method and user equipment

Publication Date: 2025.10.15 VIVO MOBILE COMM CO LTD

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AI summary

This application provides an integrity protection failure handling method and apparatus, and user equipment. The method includes: performing, by first user equipment, a security control operation in at least a case that an integrity check failure indication for a sidelink signaling bearer is received.