Radio Terminal D2D Inter-Group Communication Security
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Solution Overview
Problem
D2D communication between radio terminals is prone to disconnection due to mobility, and allowing communication between different D2D groups can compromise security, as terminals may not always be within range and may not detect each other, leading to instability and potential security weaknesses.
Innovation Solution
A radio terminal apparatus and method that allows D2D communication with a second group when a predetermined condition is met, such as explicit or implicit permission from a first group, enabling inter-group communication while maintaining security by controlling permission and communication settings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If D2D communication is restricted to within a single D2D communication group, then security is improved, but communication stability deteriorates when terminals move out of range
Solution Approach 1:
The patent introduces a ProSe function as an intermediary that mediates inter-group D2D communication. This function acts as a security gateway that authenticates terminals and manages permission relationships between different D2D groups, enabling stable cross-group communication while maintaining security through controlled access.
Solution Approach 2:
The patent implements dynamic permission management where the ProSe function continuously monitors and updates permission relationships between D2D groups based on current communication needs and security conditions. This allows the system to adaptively enable or disable inter-group communication permissions rather than using static restrictions.
2Reliability
If D2D communication is allowed between different D2D communication groups, then communication stability is improved, but security deteriorates
Solution Approach 1:
The ProSe function serves as a security intermediary that all inter-group D2D communication must pass through. It implements authentication mechanisms and permission verification, ensuring that only authorized terminals can establish connections across D2D group boundaries, thus maintaining security while enabling stable communication.
Solution Approach 2:
The system implements feedback mechanisms where the ProSe function continuously monitors communication status and security conditions between D2D groups. Based on this feedback, it dynamically adjusts permission relationships to maintain both communication stability and security, preventing unauthorized access while allowing legitimate inter-group communication.
Data Source
AI summary
A radio terminal apparatus (113) is configured to perform D2D communication with at least one radio terminal (121-124) belonging to a second group (group 2) when a predetermined condition is satisfied. The predetermined condition includes that a first radio terminal (110) belonging to a first group (group 1) to which the radio terminal apparatus (113) belongs gives the second group (group 2) implicit or explicit permission to perform D2D communication between the first and second groups (groups 1 and 2). It is thus, for example, possible to contribute to improving security of device-to-device (D2D) communication performed between D2D communication groups.