Delay prediction device, delay prediction system, delay prediction method, and recording medium

A delay prediction method comprising:

• estimating a probability distribution of a first communication delay state by using a result of measuring a communication delay of a packet in a network;
• identifying whether a state of the communication delay is the first communication delay state or a second communication delay state in which the communication delay is greater than the communication delay in the first communication delay state;
• estimating a probability distribution of the second communication delay state;
• and
• predicting a probability distribution of a future communication delay, based on a probability distribution of the first communication delay state and a probability distribution of the second communication delay state.

A non-transitory computer-readable recording medium storing a program for causing a computer to execute:

• estimating a probability distribution of a first communication delay state by using a result of measuring a communication delay of a packet in a network;
• identifying whether a state of the communication delay is the first communication delay state or a second communication delay state in which the communication delay is greater than the communication delay in the first communication delay state;
• estimating a probability distribution of the second communication delay state;
• and
• predicting a probability distribution of a future communication delay, based on a probability distribution of the first communication delay state and a probability distribution of the second communication delay state.