Method and apparatus for determining passive intermodulation signal strength in a communication network

A signal processing apparatus, comprising:

• a processor;
• and
• a memory coupled to the processor, wherein the memory comprises instructions that, when executed by the processor, causes the apparatus to perform operations comprising:
• obtaining first downlink signal data corresponding to each of N cells in a preset bandwidth resource scheduling solution, wherein N is a positive integer greater than 1;
• determining first characteristic data corresponding to each piece of the first downlink signal data;
• and
• determining, based on a preset signal strength evaluation model and the first characteristic data corresponding to each of the N cells, a first passive intermodulation (PIM) signal strength corresponding to a first cell, wherein the signal strength evaluation model is used to output the first PIM signal strength based on input the first characteristic data, and the first cell is one of the N cells;
• wherein the operations further comprise:
• before the determining, based on the preset signal strength evaluation model and the first characteristic data corresponding to each of the N cells, the first PIM signal strength corresponding to the first cell;
• obtaining second downlink signal data corresponding to each of the N cells within a preset time period, wherein none of the N cells has uplink data being received within the preset time period;
• obtaining a second uplink signal strength corresponding to the first cell within the preset time period, and using the second uplink signal strength as a second PIM signal strength;
• determining training characteristic data based on the second downlink signal data corresponding to the N cells within the preset time period;
• and
• performing training based on;
• the training characteristic data;
• the second PIM signal strength within the preset time period;
• and a preset model training function, to obtain the signal strength evaluation model.