Temporary Identifier Transition in Random Access Security
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Solution Overview
Problem
Temporary identifiers in wireless communication systems are vulnerable to interception, leading to security vulnerabilities such as denial-of-service attacks and unauthorized UE tracking, as they are often transmitted in plaintext during connection establishment procedures.
Innovation Solution
A lightweight radio resource control (RRC) procedure is implemented to transition from a first temporary ID to a second temporary ID without performing a full handover, enhancing security by reducing signaling exposure and improving UE privacy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If temporary identifiers are transmitted during connection establishment procedures, then UE can be authenticated and connected to the network, but security is compromised due to plaintext transmission vulnerability
Solution Approach 1:
The patent applies preliminary action by establishing a security context and encrypting the temporary identifier before transmission during the connection establishment procedure. The network entity prepares security parameters in advance and uses them to protect the temporary identifier, preventing interception while maintaining authentication functionality.
2Object-affected harmful factors
If full handover procedure is performed to change temporary ID, then security is improved, but system overhead and complexity increase
Solution Approach 1:
The patent extracts the essential security function from the complete handover procedure. Instead of performing full handover, the system selectively changes only the temporary identifier using a simplified procedure that maintains security benefits while reducing the complexity of mobility management operations.
Solution Approach 2:
The patent segments the handover procedure into a lightweight identifier change mechanism separate from the full handover process. This allows temporary identifier replacement to occur independently without triggering complete handover, thereby reducing system overhead while maintaining security.
3Object-affected harmful factors
If temporary identifier is changed without full handover, then signaling exposure is reduced and UE privacy is improved, but identifier transition complexity increases
Solution Approach 1:
The patent introduces an intermediary security context mechanism that facilitates temporary identifier transition. This intermediary structure enables secure identifier change by providing a controlled environment for authentication and encryption, reducing signaling exposure while managing transition complexity through standardized security protocols.
Data Source
AI summary
Various aspects of the present disclosure relate to methods, apparatuses, and devices for wireless communication. A user equipment (UE) may be configured to transmit a first random access transmission to a base station. The UE may be further configured to receive, in response, a second random access transmission comprising a first temporary identifier, perform a first security procedure using the first temporary identifier for scheduling, and receive a radio resource control (RRC) reconfiguration message that initiates a second security procedure. The RRC reconfiguration message includes a second temporary identifier. These techniques may enhance the protection of temporary identifiers during random access and security transitions.