Wireless Device Testing With Probabilistic Radio Frame Failures
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Solution Overview
Problem
Existing methods for testing wireless devices fail to simulate and emulate the behavior of access nodes, leading to invalidation of test results due to undefined clear channel assessment failures.
Innovation Solution
A method to limit the number of simulated transmission failures by determining candidate positions for signal transmission based on probabilities and thresholds, ensuring consistent behavior of terminal nodes meets performance requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If clear channel assessment failures are simulated during testing, then test coverage is improved, but test results become invalid due to undefined failure behavior
Solution Approach 1:
The patent changes the parameter of transmission failure simulation by introducing a probability-based mechanism. Instead of undefined failures, the system determines whether to simulate a failure based on a configurable probability parameter, allowing controlled and repeatable test scenarios that maintain result validity while improving test coverage.
Solution Approach 2:
The patent applies preliminary action by pre-defining the conditions and probabilities for transmission failures before testing begins. The test configuration specifies failure probabilities and thresholds in advance, ensuring that when failures occur during testing, they follow predetermined rules that maintain test result validity.
2Measurement precision
If transmission failures are simulated to test terminal node behavior, then performance requirement verification is enhanced, but test consistency deteriorates due to unpredictable failure patterns
Solution Approach 1:
The patent implements feedback by monitoring the number of simulated transmission failures and comparing it against predefined thresholds. When the failure count reaches a threshold, the system provides feedback to adjust or terminate the test, ensuring consistent and controlled testing conditions while still verifying performance requirements under failure scenarios.
Solution Approach 2:
The patent introduces dynamics by making the transmission failure simulation probabilistic rather than static. The configurable probability parameters allow the test to adapt failure patterns dynamically while maintaining overall consistency through predefined constraints and thresholds.
3Measurement precision
If clear channel assessment model is implemented in test cases, then testing accuracy is improved, but device complexity increases due to additional modeling requirements
Solution Approach 1:
The patent applies copying by creating a simplified probabilistic model that replicates the essential behavior of clear channel assessment failures without implementing the full complexity of the actual CCA mechanism. This copy captures the necessary failure patterns for testing while avoiding the complexity of the complete CCA model.
Data Source
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AI summary
An apparatus (10) comprising means for: enabling testing of at least one user equipment (110, 12) over a plurality of radio frames by: determining (202), for at least one candidate position in a current radio frame, if one or more signals are to be transmitted to the at least one user equipment, based, at least in part, on one or more probabilities associated with the at least one candidate position in the current radio frame; if it is determined, for at least one candidate position in the current radio frame, that one or more signals are to be transmitted to the at least one user equipment, transmitting (204) one or more signals to the at least one user equipment using the at least one candidate position in the current radio frame; if it is determined, for at least one candidate position in the current radio frame, that one or more signals are not be transmitted to the at least one user equipment, determining (206) if a maximum number of transmission failures has occurred, wherein a transmission failure is determined to have occurred when it is determined that no signals are to be transmitted in a current radio frame; and if it is determined that a maximum number of transmission failures has occurred, transmitting (208) one or more signals to the at least one user equipment using at least one candidate position in the current radio frame.