A-IoT Authentication Relay for Low-Complexity Network Access
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Solution Overview
Problem
Zero-power devices such as Ambient Internet of Things (A-IoT) devices face challenges in accessing networks due to high calculation complexity in authentication and key negotiation processes.
Innovation Solution
A method where a first device calculates a response based on shared keys and identifiers of multiple second devices, transmitting this response to a core network side device for authentication, using various cryptographic functions to reduce complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional authentication and key negotiation processes are used, then network security is maintained, but calculation complexity becomes too high for zero-power devices
Solution Approach 1:
The first device acts as an intermediary that performs authentication calculations on behalf of the second zero-power device. The first device calculates the authentication response using shared keys and identifiers, then transmits this pre-calculated response to the core network side device, eliminating the need for the second device to perform complex cryptographic operations.
Solution Approach 2:
The authentication process is segmented into distinct functional parts: the first device handles complex calculation tasks (calculating authentication responses using shared keys), while the second zero-power device only needs to provide identifiers and receive authentication results. This segmentation allows computationally intensive operations to be performed by capable devices while preserving battery-free operation for simple devices.
2Reliability
If authentication calculations are performed by zero-power devices, then authentication can be completed, but energy consumption increases beyond zero-power capability
Solution Approach 1:
The first device serves as an intermediary that performs all energy-consuming authentication calculations. The second zero-power device only transmits minimal data (identifiers) and receives authentication results, consuming negligible energy. This approach maintains the zero-power characteristic while ensuring successful authentication completion.
3Reliability
If multiple second devices are authenticated individually, then each device gets proper authentication, but communication overhead and time increase
Solution Approach 1:
The first device merges multiple authentication requests into a single calculation process. It collects identifiers from multiple second devices, combines them with shared keys, and generates authentication responses in one unified operation. This batch processing approach maintains individual authentication accuracy while significantly reducing total authentication time and communication overhead.
Data Source
AI summary
An authentication method includes: a first device transmits a first message to a core network side device. The first message carries a first response used by the core network side device to perform authentication related to one or more second devices.