Communication Test Device Handling Priority and Non-Priority Frames
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Solution Overview
Problem
Existing communication test devices struggle to provide real-time performance and security when dealing with network standards that include priority and non-priority frames, such as TSN, as they are not specifically designed to handle these frame types.
Innovation Solution
A communication test device is designed with a reception portion for receiving non-priority frames divided into fragments and priority frames, a test portion for testing frames according to predefined rules, a hold portion for maintaining test status information, a transmission portion for transmitting tested frames, and an interception control portion for managing frame interceptions based on test results. This device tests fragments of non-priority frames, interrupts and resumes testing as necessary, and prioritizes testing of priority frames.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a communication test device performs comprehensive testing of all communication frames to ensure security, then security is improved, but real-time performance deteriorates due to increased delay time
Solution Approach 1:
The testing function is segmented based on frame priority: priority frames receive expedited processing with minimal testing delay, while non-priority frames undergo comprehensive security testing. This segmentation allows the system to maintain real-time performance for critical communications while ensuring security testing for non-critical traffic.
Solution Approach 2:
Different testing depths are applied to different frame types: priority frames receive shallow testing to minimize delay, while non-priority frames receive deep comprehensive testing. This local quality approach ensures that security requirements are met for all frames while real-time performance is preserved for priority frames.
2Reliability
If a communication test device processes non-priority frames completely before priority frames arrive, then processing completeness is improved, but real-time performance deteriorates when priority frames require immediate handling
Solution Approach 1:
The testing process dynamically adjusts based on frame priority and arrival timing. When a priority frame arrives during non-priority frame testing, the system interrupts the lower-priority testing to handle the priority frame immediately, then resumes the interrupted testing afterward. This dynamic approach ensures both processing completeness and real-time performance.
Solution Approach 2:
The system performs preliminary testing on non-priority frames when possible, but maintains the capability to interrupt and resume testing as needed. This preliminary action approach allows the system to make progress on non-priority frames without compromising the ability to respond immediately to priority frames.
3Stability of the object's composition
If a communication test device applies the same testing protocol to all frames, then consistency is improved, but adaptability to priority-based network standards deteriorates
Solution Approach 1:
The testing protocol is adapted locally based on frame priority: priority frames receive a streamlined testing protocol to minimize delay, while non-priority frames receive the full comprehensive testing protocol. This maintains consistency within each frame category while adapting to the priority-based network standard requirements.
Solution Approach 2:
The testing protocol dynamically changes based on the frame priority indicator. The system detects frame priority and automatically selects the appropriate testing depth and processing path, enabling adaptability to priority-based network standards while maintaining systematic testing approaches for each frame type.
Data Source
AI summary
A communication test device may comprise a reception portion that receives a non-priority frame that may be divided into a plurality of fragments and a priority frame that is not divided as communication frames, a test portion that tests the communication frames in accordance with a predefined test rule and determines whether the communication frame is an invalid frame, a hold portion that holds status information indicating a status of the test by the test portion, a transmission portion that transmits the communication frame tested in the test portion, and/or an interception control portion that controls interception of the communication frame based on a determination result of the test portion.