Remote passive intermodulation detection using nearby transmissions

A wireless telecommunications system, comprising:

• a receiver;
• and
• a processor,
• wherein the wireless telecommunications system is configured to perform, using the processor:
• determining intermodulation product information for a plurality of transmitters;
• receiving downlink power information of the plurality of transmitters;
• determining, using the intermodulation product information and the downlink power information, a Weighted Downlink Power (WDP) signal for an intermodulation product, the WDP signal including a plurality of expected power values;
• and
• determining, using the WDP signal, a PIM Detection Assessment (PIMDA) score of the intermodulation product, wherein a value of the PIMDA score corresponds to interference generated by PIM,
• wherein determining the WDP signal comprises:
• receiving uplink interference information of the receiver, the uplink interference information including a plurality of received interference values;
• generating, using the WDP signal and the uplink interference information, a plurality of linear models for the intermodulation products;
• determining, using the linear models, a plurality of features of the intermodulation product;
• and
• determining, using the plurality of features, the PIMDA score, wherein a value of the PIMDA score corresponds interference generated by PIM and received by the receiver.

A method for remote detection of interference generated by Passive Inter-Modulation (PIM), the method comprising:

• determining intermodulation product information for a plurality of transmitters;
• receiving downlink power information of the plurality of transmitters;
• determining, using the intermodulation product information and the downlink power information, a Weighted Downlink Power (WDP) signal for an intermodulation product, the WDP signal including a plurality of expected power values;
• and
• determining, using the WDP signal, a PIM Detection Assessment (PIMDA) score of the intermodulation product, wherein a value of the PIMDA score corresponds to interference generated by PIM,
• wherein determining the WDP signal comprises:
• identifying respective downlink frequencies of the plurality of transmitters;
• determining, using the downlink power information, an aggregate downlink power signal for each of the downlink frequencies, each aggregate downlink power signal including a plurality of aggregate downlink power values;
• and
• determining the WDP signal of the intermodulation product according to a weighted sum of the aggregate downlink power signals of the downlink frequencies involved in determining the intermodulation product.

A wireless telecommunications system, comprising:

• a receiver;
• and
• a processor,
• wherein the wireless telecommunications system is configured to perform, using the processor:
• determining intermodulation product information for a plurality of transmitters;
• receiving downlink power information of the plurality of transmitters;
• determining, using the intermodulation product information and the downlink power information, a Weighted Downlink Power (WDP) signal for an intermodulation product, the WDP signal including a plurality of expected power values;
• and
• determining, using the WDP signal, a PIM Detection Assessment (PIMDA) score of the intermodulation product, wherein a value of the PIMDA score corresponds to interference generated by PIM,
• wherein determining the WDP signal comprises:
• identifying respective downlink frequencies of the plurality of transmitters;
• determining, using the downlink power information, an aggregate downlink power signal for each of the downlink frequencies, each aggregate downlink power signal including a plurality of aggregate downlink power values;
• determining the WDP signal of the intermodulation product according to a weighted sum of the aggregate downlink power signals of the downlink frequencies involved in determining the intermodulation product.