CONTROLLING START TIMING OF NETWORK LOAD PREDICTION

It is enabled that network load prediction for executing scale-out of an element included in a communication system is started at an appropriate timing. A policy manager (90) determines whether network load prediction is required based on performance index value data and a determination criterion which is based on a usage amount of computer resources. An AI (70) starts network load prediction in response to a determination that the network load prediction is required. After the network load prediction is started, the policy manager (90) determines whether scale-out is required based on a network load prediction result. The policy manager (90), a life cycle manager (94), a container manager (78), and a configuration manager (76) execute scale-out of the element included in the communication system in response to a determination that the scale-out is required.