Wireless Gateway Trusted Processor Isolation
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Solution Overview
Problem
Current wireless communication technologies face challenges in providing flexible data access speeds at various price points while maintaining the security of the wireless network infrastructure, especially with the integration of IoT devices and the transition to 5G cellular communications.
Innovation Solution
A wireless gateway with multiple processors is implemented, featuring a trusted processor operating in a trusted execution environment (TEE) and additional processors in rich execution environments (REEs), which manages communication by blocking unauthorized access to trusted messages and directing them through specific radio spectrum bands to ensure secure communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple processors are used to provide both TEE and REE environments, then security and flexibility are improved, but device complexity increases
Solution Approach 1:
The system is divided into multiple independent processors: a first processor dedicated to TEE operations and second/third processors dedicated to REE operations. Each processor handles specific communication bands and message types, creating clear functional segmentation that improves security while managing complexity through specialization.
Solution Approach 2:
The first processor acts as an intermediary that monitors messages received by second and third processors, determines trust levels, and routes appropriate messages to the first processor for secure handling. This intermediary mechanism enables secure communication without requiring all processors to have full TEE capabilities.
2Reliability
If trusted messages are monitored and redirected through specific radio spectrum bands, then message security is improved, but communication time increases
Solution Approach 1:
The first processor continuously monitors messages received by second and third processors before they are fully processed, determining trust levels in advance. This preliminary monitoring allows trusted messages to be quickly identified and redirected through appropriate communication bands without delaying untrusted message handling.
Solution Approach 2:
Different communication bands are assigned different security qualities: the first radio transceiver handles trusted communication with higher security requirements, while second and third transceivers handle untrusted communication with standard security. This local quality differentiation optimizes communication time by applying enhanced security only where necessary.
Data Source
AI summary
A method of communicating using a wireless gateway. The method comprises receiving a first message in a first radio spectrum band by a first radio transceiver of a wireless gateway, determining by a first processor of the wireless gateway that the first message is a trusted message transmitted by a first source device, transmitting the first message by the first radio transceiver in the first radio spectrum, receiving a second message in a second radio spectrum band by a second radio transceiver of the wireless gateway, determining by the first processor that the second message is a trusted message transmitted by a second source device, and transmitting a third message by the second radio transceiver in the second radio spectrum band to the second source device, wherein the third message directs the second source device to transmit the second message to the wireless gateway in the first radio spectrum band.