Analysis of the Relationship Between Server Location and RTT

Round Trip Time (RTT) has a decisive impact on Quality of Experience (QoE) and is therefore used as a key indicator in performance analysis. The location of the remote server is known as the most important indicator of the RTT, which is the basis of the server installation such as CDN and Proxy. However, in modern networks, private networks such as Wi-Fi and home routers are installed at the edge of the network, making it difficult for an ISP to measure its own RTT. In this study, we analyzed the relationship between server location and RTT to cover a private network like a home router. The correlation coefficient between the RTT and the server location over 100 ms is 0.33, which indicates that the distance to the server is the main factor that influences QoE when communicating with specific servers. We have gathered participants for the experiment to collect the data and have analyzed the characteristics of the group. Our research contributes to the field of analyzing the actual performance of the client with the consideration of the private network.