| CPC H04L 41/147 (2013.01) [H04W 24/02 (2013.01)] | 20 Claims |

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1. A computer-implemented method of forecasting performance issues associated with cells in a wireless network, the method performed by a network optimization function associated with the wireless network and comprising:
for each of a plurality of cells in the wireless network, obtaining first time-series data representing a plurality of key performance indicators (KPIs) at a first plurality of past time points;
applying a multi-layer forecasting model to the first time-series data to determine second time-series data representing the plurality of KPIs for each of the plurality of cells at a second plurality of future time points, wherein applying the multi-layer forecasting model to the first time-series data comprises:
for each particular KPI, applying a first layer to predict a linear pattern in the first time-series data;
for each particular KPI, applying a second layer to predict a periodic pattern in the first time-series data; and
applying a third layer to predict further patterns in the plurality of KPIs based on the first time-series data, the predicted linear patterns, and the predicted periodic patterns; and
based on the second time-series data, determining respective probabilities of occurrence for a respective plurality of different performance issues, associated with the plurality of cells, during one or more future time periods that include the second plurality of future time points.
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