Method and apparatus for detecting and correcting passive intermodulation (PIM)
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsZhongwen Zhu, Manoj Kopparambil Nambiar
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Abstract
The disclosure relates to a method, apparatus and computer readable media, for detecting and correcting passive intermodulation (PIM). The method comprises receiving a radio frequency (RF) signal. The method comprises providing the RF signal to a first and a second PIM detectors. The method comprises, upon detection of PIM by at least one of the first and second PIM detectors, for which, based on a schedule, the detection of PIM is applicable at a time of detection of PIM, activating PIM correction.
Claims20
A method for detecting and correcting passive intermodulation (PIM), comprising:
- receiving a radio frequency (RF) signal;
- providing the RF signal to a legacy PIM detector (PIMD) and a model-based PIM detector, wherein the model-based PIM detector comprises a features extractor which extracts features from the RF signal and feeds the features into a trained model for detection of PIM and wherein the features extracted from the RF signal comprise minimum, maximum, average, standard deviation of amplitude and frequency measurements of the RF signal, and corresponding PIM or NO-PIM expected outputs correspond to outputs from the model-based PIM detector or from the PIMD;
- and
- upon detection of PIM by at least one of the PIMD and the model-based PIM detector, for which, based on a schedule, the detection of PIM is applicable at a time of detection of PIM, activating PIM correction.
An apparatus for detecting and correcting passive intermodulation (PIM) comprising processing circuits and a memory, the memory containing instructions executable by the processing circuits whereby the apparatus is operative to:
- receive a radio frequency (RF) signal;
- provide the RF signal to a legacy PIM detector (PIMD) and a model-based PIM detector, wherein the model-based PIM detector comprises a features extractor which extracts features from the RF signal and feeds the features into a trained model for detection of PIM and wherein the features extracted from the RF signal comprise minimum, maximum, average, standard deviation of amplitude and frequency measurements of the RF signal, and corresponding PIM or NO-PIM expected outputs correspond to outputs from the model-based PIM detector or from the PIMD;
- and
- upon detection of PIM by at least one of the PIMD and the model-based PIM detector, for which, based on a schedule, the detection of PIM is applicable at a time of detection of PIM, activate PIM correction.
A non-transitory computer readable media having stored thereon instructions for detecting and correcting passive intermodulation (PIM), the instructions comprising:
- receiving a radio frequency (RF) signal;
- providing the RF signal to a legacy PIM detector (PIMD) and a model-based PIM detector, wherein the model-based PIM detector comprises a features extractor which extracts features from the RF signal and feeds the features into a trained model for detection of PIM and wherein the features extracted from the RF signal comprise minimum, maximum, average, standard deviation of amplitude and frequency measurements of the RF signal, and corresponding PIM or NO-PIM expected outputs correspond to outputs from the model-based PIM detector or from the PIMD;
- and
- upon detection of PIM by at least one of the PIMD and the model-based PIM detector, for which, based on a schedule, the detection of PIM is applicable at a time of detection of PIM, activating PIM correction.
Dependencies are inferred from the claim text.