Executing appropriate scale-out of an element included in a communication system

Abstract

A communication system is appropriately scaled out. An AI predicts, based on a performance index value before a given reference time point, a network load at a plurality of prediction time points included in a prediction period from the given reference time point until a predetermined time after the given reference time point. A policy manager determines, for each of the plurality of prediction time points, whether a predicted value of the network load at the prediction time point exceeds a threshold value, which increases as a length of time from the reference time point until the prediction time point increases. The policy manager, a life cycle manager, a container manager, and a configuration manager execute scale-out of an element included in the communication system when it is determined that the predicted value exceeds the threshold value at a part or all of the plurality of prediction time points.