MCX Ad-Hoc Group Communication With Encrypted Security Contexts
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Solution Overview
Problem
Existing 5G mobile communication systems lack a method for secure, ad-hoc group communication without relying on pre-configured groups, leading to potential eavesdropping and decryption issues in Mission Critical (MCX) services.
Innovation Solution
A method for controlling ad-hoc group communication with a security context, where an MCX user selects a random group and generates encrypted security context for communication, using an MC service server to authorize and manage participant lists dynamically.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If pre-configured groups are used for group communication, then group establishment is simplified, but security is compromised due to potential eavesdropping and decryption issues
Solution Approach 1:
The patent applies preliminary action by pre-configuring security contexts and encryption keys in the network before ad-hoc group communication occurs. When a user initiates an ad-hoc group call, the system automatically retrieves and distributes the appropriate pre-prepared security contexts to participants, enabling both quick group formation and secure communication without requiring manual security configuration at the time of call setup.
2Reliability
If security context is encrypted for all potential participants, then security is improved, but system complexity and processing overhead increase
Solution Approach 1:
The patent applies local quality by encrypting and distributing security contexts selectively based on specific group identifiers and participant lists rather than universally encrypting for all potential participants. The system generates and stores security contexts with specific encryption parameters tailored to each potential group configuration, reducing overall system complexity while maintaining security for actual ad-hoc groups.
3Adaptability or versatility
If dynamic participant management is implemented, then adaptability is improved, but security management complexity increases
Solution Approach 1:
The patent applies feedback by implementing a server-based architecture that automatically manages security contexts for dynamic participant changes. When participants are added or removed from an ad-hoc group, the system receives feedback about the changed group composition and automatically redistributes appropriate security contexts to current participants, enabling dynamic management without increasing client device complexity.
Data Source
AI summary
The disclosure relates to 5G/6G communication systems for supporting a higher data transmission rate. Embodiments provide a method for controlling an ad-hoc group communication with a security context for MCX services. The method includes sending, by first MC service client device 100, an ad-hoc group communication request message to an MC service server to establish the ad-hoc group communication with a second MC service client device. The MC service server determines whether the ad-hoc group communication is supported and successfully authorized based on the received ad-hoc group communication request. The method includes: receiving an ad-hoc group communication request return message from the MC service server when the ad-hoc group communication is supported and successfully authorized; generating the security context for the second MC service client device for the ad-hoc group communication; and establishing the ad-hoc group communication with the second MC service client device using the generated security context.