IoT Edge Secure Gateway Protocol Translation and Security
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Solution Overview
Problem
Industrial process control and automation systems face challenges in integrating diverse communication protocols and ensuring secure, scalable, and flexible connectivity between IoT devices and cloud-based systems, particularly in maintaining long-term sustainability and ease of maintenance.
Innovation Solution
The implementation of an IoT Edge secure gateway that provides a secure, scalable, and elastic platform with flexible topology and deployment models, supporting multiple communication protocols and offering advanced security features like encryption and certificate-based authentication, while enabling seamless integration with both on-premise and cloud-based systems through a Common Embedded Platform and OPC Unified Architecture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple communication protocols are integrated into the gateway, then protocol compatibility and system integration capability are improved, but device complexity increases
Solution Approach 1:
The patent implements a protocol translation layer that acts as an intermediary between different communication protocols. This translation layer converts messages from various industrial protocols (Modbus, Profibus, etc.) into a standardized internal format, allowing the gateway to support multiple protocols without requiring complex direct integration between each protocol pair. The intermediary layer simplifies the overall system architecture while maintaining high protocol compatibility.
Solution Approach 2:
The gateway is designed with a universal communication interface that can handle multiple protocols through a common processing architecture. The system employs a unified message structure and standardized data representation that works across different protocols, allowing a single gateway device to perform multiple protocol translation functions without requiring separate specialized components for each protocol.
2Reliability
If advanced security features like encryption and certificate-based authentication are implemented, then system security is improved, but processing overhead and device complexity increase
Solution Approach 1:
The gateway performs security authentication and encryption key establishment in advance before actual data transmission begins. Certificate-based authentication is completed during the initial connection phase, and encryption keys are pre-negotiated and cached. This preliminary security setup reduces the processing overhead during normal operation, as subsequent communications can use the pre-established security context without repeated heavy authentication operations.
Solution Approach 2:
The gateway implements automatic certificate management and security policy enforcement without requiring manual intervention. The system self-manages certificate validation, automatic key rotation, and security parameter configuration based on pre-defined policies. This self-service approach to security management reduces operational complexity while maintaining high security standards.
3Ease of operation
If the gateway provides scalable and elastic platform with flexible topology, then system adaptability and ease of maintenance are improved, but device complexity and configuration difficulty increase
Solution Approach 1:
The gateway implements automatic topology discovery and configuration feedback mechanisms that detect the network structure and automatically adjust settings. The system monitors connection status, protocol compatibility, and performance metrics in real-time, providing feedback that enables automatic optimization of communication parameters and topology adaptation. This feedback-driven approach simplifies configuration while maintaining flexible topology support.
Solution Approach 2:
The gateway employs dynamic configuration capabilities that allow the system to adapt its topology and communication parameters in real-time based on network conditions. The platform supports hot-swapping of communication channels, dynamic protocol selection, and adaptive routing that changes based on current system state. This dynamic behavior enables flexible topology management without requiring complex static configuration.
4Reliability
If self-management of traffic loads and mesh redundancy are implemented, then system availability and reliability are improved, but processing complexity and energy consumption increase
Solution Approach 1:
The gateway implements periodic health checks and traffic load assessments at optimized intervals rather than continuous monitoring. The system performs mesh redundancy validation and traffic routing optimization at scheduled periods, reducing the energy consumption associated with constant system-wide monitoring while maintaining high availability through regular updates of system state and routing tables.
Data Source
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AI summary
A method includes receiving (310), by a gateway (160), data from a first device (164) using a first protocol. The first protocol is a cloud based protocol. The method also includes determining (315), by the gateway (160), that the received data is intended for a second device (102a) that uses a second protocol. The method further includes converting (320), by the gateway (160), the received data from the first protocol to the second protocol. In addition, the method includes transmitting (325), by the gateway (160), the received data to the second device (102a) via the second protocol.