How to Debug Protocol Conformance Test Failures

+ Protocol Conformance Toolset

Analyze Failed Protocol Test Sequences

Protocol conformance debugging begins with the test result and the signaling activity recorded during execution. Engineers identify the test procedure that produced an unexpected result and inspect the corresponding 5G protocol trace around the point where device behavior diverged from the expected sequence. Protocol log analysis can include activity from physical (PHY), medium access control (MAC), radio link control (RLC), packet data convergence protocol (PDCP), and radio resource control (RRC) layers. Air-interface information, control events, and diagnostic records can provide additional context around the signaling test failure.

Engineers correlate these records with the individual test steps to determine which signaling exchange or protocol event requires further investigation. Rather than repeating an entire test campaign without additional information, the protocol trace can narrow the analysis to the sequence associated with the failed result. Engineers can then modify the device implementation or relevant test configuration and rerun the affected case to determine whether behavior has changed. This creates a repeatable debugging loop that connects 5G conformance testing, test execution, protocol-message inspection, protocol log analysis, implementation updates, and targeted retesting.

Protocol Conformance Debugging Solution

Debugging a failed conformance procedure requires the test verdict and detailed protocol activity recorded during execution. The solution uses the S8704A Protocol Conformance Toolset and its result-analysis workflow to support protocol conformance debugging after an unexpected test result. Engineers can use a 5G protocol trace to inspect LTE or New Radio protocol messages across multiple protocol layers and correlate the signaling sequence with the associated test procedure. Protocol log analysis can provide visibility into air-interface information, control activity, and diagnostic records surrounding a signaling test failure. Engineers performing 5G conformance testing can isolate the relevant portion of the sequence, evaluate unexpected device behavior, make implementation or configuration changes, and rerun the affected procedure. This provides a focused workflow from failed verdict through protocol analysis and targeted retesting.

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