TSN Device Test System Automation and Protocol Interoperability
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Solution Overview
Problem
Existing networking device test systems are not suitable for time-sensitive networking (TSN) devices, lack the ability to automatically generate simulation data, and do not support optimized gateway configuration schemes based on industrial field data or cross-protocol interoperability testing.
Innovation Solution
A test method and system for TSN devices that includes sending test requests and information to a conversion unit, which directs signal generation and timing units to perform tests on networking devices, utilizing simulation or field data, and storing test results to guide future tests and optimize configuration schemes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional networking device test systems are used for TSN devices, then basic connectivity testing can be performed, but they cannot test TSN-specific protocols (802.1AS, 802.1Qbv, 802.1Qbu) or determine latency, jitter, and synchronization accuracy
Solution Approach 1:
The test system is divided into independent functional modules: a control unit for test orchestration, a signal generation unit for creating test traffic, a timing unit for synchronization, and a testing unit for measurement. Each module handles specific TSN protocol aspects, enabling comprehensive testing of 802.1AS, 802.1Qbv, and 802.1Qbu protocols while maintaining system flexibility
Solution Approach 2:
A conversion unit is introduced as an intermediary component that interfaces between the control unit and the networking device under test. This conversion unit handles protocol translation and coordination, enabling the test system to communicate with various TSN devices while maintaining standardized test procedures
2Measurement precision
If manual configuration and testing procedures are used, then test coverage can be comprehensive, but test efficiency is low and time-consuming
Solution Approach 1:
The test system implements automated self-configuration through the control unit, which automatically generates test sequences, configures signal generation parameters, and orchestrates timing based on the selected test type. The system performs autonomous measurement and analysis without requiring manual intervention, thereby maintaining comprehensive test coverage while dramatically improving efficiency
Solution Approach 2:
The system pre-configures test parameters and sequences before actual testing begins. The control unit prepares all necessary test data, signal generation settings, and timing configurations in advance, allowing the testing to proceed immediately with full accuracy without time-consuming manual setup during the actual test execution
3Measurement precision
If standard Ethernet testing methods are used, then general network functionality can be verified, but deterministic transmission characteristics (latency, jitter) cannot be measured
Solution Approach 1:
The timing unit is integrated directly into the test system architecture, combining time measurement capabilities with the signal generation and testing functions. This unified approach allows simultaneous measurement of latency, jitter, and synchronization accuracy without requiring separate complex timing instrumentation, thereby achieving precise deterministic transmission measurement with manageable system complexity
Data Source
AI summary
A test method for a time-sensitive networking device, including steps of: sending a test request and a test goal; converting the test goal into test information; making a determination on a test scenario, wherein when the test scenario is a simulation test, a test indication signal is sent to a networking device under test, and when the test scenario is a field test, no test indication signal is sent; determining whether feedback information is received from the networking device under test within a test duration; in case of the reception, testing the feedback information and outputting a test result. A test system for a time-sensitive networking device, including a networking device testing apparatus, a user terminal and a plurality of networking devices under test. One terminal of the networking device testing apparatus is connected to the user terminal, and another terminal is connected to the plurality of networking devices under test. The networking device testing apparatus includes a power supply, a processing unit, a storage unit, a network interface and a clock module.