Quality estimation method, quality estimation apparatus, and recording medium

A quality estimation apparatus comprising:

• a memory;
• and
• a processor coupled to the memory and configured to:
• obtain a plurality of packets communicated between a client device at a first point and a server device;
• extract a number of losses indicating the number of lost packets among the plurality of packets by analyzing the plurality of packets;
• determine statistics information of a delay time due to packet loss of the plurality of packets, based on the number of losses and quality information indicating quality of a network used for communication between a client device at a second point and the server device;
• and
• estimate a response time of the server device on operation performed by the client device at the second point based on the determined statistics information.

A non-transitory computer-readable recording medium that causes a quality estimation apparatus to execute a process, the process comprising:

• obtaining a plurality of packets communicated between a client device at a first point and a server device;
• extracting a number of losses indicating the number of lost packets among the plurality of packets by analyzing the plurality of packets;
• determining statistics information of a delay time due to packet loss of the plurality of packets, based on the number of losses and quality information indicating quality of a network used for communication between a client device at a second point and the server device;
• and
• estimating a response time of the server device on operation performed by the client device at the second point based on the determined statistics information.