Beacon Detection for Wireless Interference Testing
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Solution Overview
Problem
Current testing methods for wireless communication systems do not effectively detect interference between different radio bands, leading to potential issues in device performance even if individual radios pass tests.
Innovation Solution
A testing structure and process that detects beacon transmission signals from devices under test, counts pulses, and compares them to expected values to identify inconsistencies, indicating potential interference between radio bands, allowing for further testing to address and eliminate interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If individual radio performance testing is performed, then each radio can be tested separately, but interference between different radio bands cannot be detected
Solution Approach 1:
The patent combines multiple radio bands into a single testing environment where all radios operate simultaneously. The beacon detection system aggregates signals from multiple bands and compares expected versus actual beacon counts to detect interference between bands, resolving the contradiction by enabling simultaneous multi-band testing while maintaining individual radio performance assessment.
Solution Approach 2:
The patent introduces a beacon detection system as an intermediary that mediates between the radios and the testing equipment. This intermediary system receives beacon signals from multiple radio bands, processes them centrally, and provides interference detection capabilities without requiring complex direct measurement between each radio pair, thus simplifying the testing architecture.
2Measurement precision
If complex waveform analysis software and hardware is used, then interference can be detected with high precision, but device complexity and cost increase
Solution Approach 1:
The patent extracts the essential interference detection function from complex waveform analysis by focusing solely on beacon signal detection and counting. Instead of analyzing entire waveforms, the system extracts only the beacon pulses from the radio signals, counts them over a measurement period, and compares against expected values to detect interference, thereby achieving precision without complexity.
Solution Approach 2:
The patent segments the radio signal analysis into discrete beacon pulse detection events. Rather than processing continuous waveforms, the system identifies and counts individual beacon pulses, transforming the complex continuous signal analysis into a simpler discrete event counting process that maintains detection precision while reducing system complexity.
Data Source
AI summary
A receiver is provided that receives signals from a device under test (DUT) for one or more modes of operation. For each mode, the system detects beacon transmission signals from the DUT, and counts the number of beacons for a period of time. If the count is not consistent with an expected count, e.g. a stored value, the system may preferably provide an output to indicate that there is a problem with the DUT. If the count is consistent with the expected count, the system may preferably perform further testing for other modes of operation. If the count output of the DUT is consistent with expected counts over each of the operation modes, the system may provide an indication that the DUT has passed the beacon tests.