MTC-IWF Authorization for Group Messaging Security
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In Machine-Type Communication (MTC) networks, unauthorized group messages can cause Denial of Service (DoS) attacks and other security threats, such as Man-in-the-Middle (MitM) and replay attacks, due to the lack of proper authorization and security measures for group messaging.
Innovation Solution
A network node within the core network is implemented to receive messages with indicators for group addresses, authorize transmission sources, and use group keys for secure communication, ensuring that only authorized messages are relayed to MTC devices, thereby preventing fraud and ensuring message integrity and confidentiality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If group messaging is enabled in MTC networks, then communication efficiency and device coordination are improved, but security vulnerabilities and DoS attack risks increase
Solution Approach 1:
The patent implements preliminary authorization verification by the MTC-IWF before group messages are processed and distributed. The network node checks whether the transmission source is authorized to send group messages to the target group before allowing the message to proceed through the network, preventing unauthorized messages from causing DoS attacks
Solution Approach 2:
The patent introduces an intermediary authorization mechanism where the MTC-IWF acts as a mediator between the transmission source and the group message routing function. The MTC-IWF verifies authorization credentials and determines whether the sender has permission to communicate with the target group, blocking unauthorized messages before they can impact network security
2Reliability
If authorization verification is implemented for group messages, then network security is improved, but message processing complexity and network node workload increase
Solution Approach 1:
The patent extracts the authorization verification function from the general message processing flow and concentrates it in a dedicated MTC-IWF network node. This separation allows the authorization logic to be independently optimized and managed, reducing the processing burden on other network elements while maintaining security
Solution Approach 2:
The MTC-IWF performs self-service authorization verification by maintaining local authorization data and making independent determination decisions. The network node autonomously verifies transmission sources against stored authorization information without requiring continuous external validation, reducing processing complexity while maintaining security
Data Source
AI summary
A network node (21), which is placed within a core network, receives a message from a transmission source (30) placed outside the core network. The message includes an indicator indicating whether or not the message is addressed to a group of one or more MTC devices attached to the core network. The network node (21) determines to authorize the transmission source (30), when the indicator indicates that the message is addressed to the group. Further, the message includes an ID for identifying whether or not the message is addressed to the group. The MTC device determines to discard the message, when the ID does not coincide with an ID allocated for the MTC device itself. Furthermore, the MTC device communicates with the transmission source (30) by use of a pair of group keys shared therewith.