UE-to-UE Relay Discovery Message Encryption

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Solution Overview

Problem

Wireless communication systems lack security protection for discovery messages used in UE-to-UE relay discovery, making them vulnerable to attacks where attackers can obtain private information, spoof, or replay these messages, degrading service performance.

Innovation Solution

Implementing encryption and decryption methods using code-sending security parameters (CSSPs) and code-receiving security parameters (CRSPs) for discovery messages, ensuring hop-by-hop and end-to-end security protection during UE-to-UE relay discovery.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If discovery messages are transmitted over-the-air without security protection, then ease of operation and device complexity are maintained at low levels, but security vulnerability increases allowing attackers to obtain private information, spoof, or replay messages

Engineering Contradiction:

Improvesecurity protectionVSAvoidencryption operations

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

Security parameters (CSSPs and CRSPs) are pre-configured in UEs before relay discovery operations. This preliminary setup enables encryption and decryption to be performed automatically during message transmission without requiring complex real-time key management, thus improving security while minimizing additional operational complexity

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent introduces security parameters (CSSPs and CRSPs) as intermediary elements that mediate between the discovery message and the encryption/decryption processes. These parameters act as standardized interfaces that simplify the implementation of security protection without requiring complex custom encryption logic in each UE

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If encryption and decryption operations are implemented for discovery messages, then security protection is improved, but use of energy and device complexity increase

Engineering Contradiction:

Improvesecurity protectionVSAvoidenergy consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent applies different security parameter sets (CSSPs for code-sending, CRSPs for code-receiving) to different roles in the relay discovery process. This localized application of security measures ensures that encryption and decryption operations are performed only where necessary, optimizing energy consumption while maintaining comprehensive security protection

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent utilizes configurable security parameters that can be adjusted based on specific relay service requirements. By allowing parameter optimization, the system can balance security strength with energy consumption, performing encryption/decryption with appropriate complexity only when and where needed

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS20230319551A1Security protection of user equipment (UE)-to-UE relay discovery

Publication Date: 2023.10.05 QUALCOMM INC

AI summary

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may encrypt a discovery message associated with a relay service based at least in part on a set of code-sending security parameters (CSSPs) associated with the relay service. The UE may transmit the encrypted discovery message. In some aspects, a UE may receive an encrypted discovery message. The UE may decrypt the encrypted discovery message based at least in part on a set of code-receiving security parameters (CRSPs) associated with the relay service. Numerous other aspects are provided.