Sidelink Control Signaling for Malicious Collision Mitigation

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Solution Overview

Problem

Sidelink communications are vulnerable to malicious attacks, particularly intelligent attacks that cause intentional collisions on specific resources, which are difficult to detect due to their selective and low-power nature.

Innovation Solution

Implementing a method where a first apparatus modifies sidelink control information (SCI) to include secret indications for a secret sidelink resource allocation, which is offset from the original resources, allowing only legitimate devices to recognize and utilize these resources while attackers are unable to interpret the changes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If sidelink control information is transmitted using standard unmodified formats, then communication compatibility and ease of operation are maintained, but the system becomes vulnerable to intelligent malicious attacks that cause intentional collisions on specific resources

Engineering Contradiction:

Improveresistance to malicious attacksVSAvoidmodification of sidelink control information

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent modifies parameters within the sidelink control information message format, specifically changing resource allocation indications from standard to secret offsets. This allows legitimate devices to interpret the modified SCI correctly while attackers cannot determine the actual resource locations, thus improving reliability against attacks without fundamentally changing the communication protocol structure

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent introduces an intermediary encoding layer where the SCI message contains offset values that are not directly the resource locations but mathematical relationships to them. This intermediary representation protects the actual resource allocation information from attackers while allowing legitimate receivers to decode the true locations through known relationships

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If secret indications are introduced in sidelink control information to protect against attacks, then communication security is improved, but detection and measurement of attack patterns becomes more difficult

Engineering Contradiction:

Improvecommunication securityVSAvoiddetection of attack patterns

Core Design Contradiction:

ReliabilityVSDifficulty of detecting and measuring

Solution Approach 1:

By changing the parameter representation from direct resource locations to offset-based secret indications, the patent makes it difficult for attackers to measure and detect attack patterns. Legitimate devices can detect attacks through performance metrics while attackers cannot correlate their collisions with specific resource allocations due to the obscured parameter relationships

Inventive Principle:

Principle #35Parameter changes

3Ease of operation

If standard sidelink resources are used without modification, then ease of operation and device compatibility are maintained, but intelligent attacks can selectively target specific resources causing harmful collisions

Engineering Contradiction:

Improvedevice compatibilityVSAvoidintelligent malicious attacks

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent maintains ease of operation by keeping the overall SCI message structure compatible with standard formats, while changing only the specific parameter values (resource allocation offsets). This allows devices to operate with standard protocols while the modified parameters provide protection against intelligent attacks that cannot interpret the secret offset relationships

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS12587561B2Mitigation of malicious attacks in sidelink communications

Publication Date: 2026.03.24 NOKIA TECHNOLOGIES OY

AI summary

There is provided an apparatus which is a first apparatus, configured to communicate with at least one second apparatus via sidelink resources associated with unmodified sidelink control information, the apparatus comprising means for: detecting a possibility of a malicious attack on the sidelink resources or receiving an instruction to modify a sidelink control information message; transmitting, to the at least one second apparatus, a modified sidelink control information message indicative of at least one secret indication.