In the case of multiple access points with the same SSID and key, the end device decides when to switch to another access point with better reception. When an end device connects to a WiFi, it must first authenticate itself and get an IP address from the DHCP server, which takes a little time. Normally, when switching from one access point to another, the device would have to go through the entire login process again and stop data traffic until the connection is complete. The 802.11r standard simplifies the connection process by shortening the login process when switching from one access point to another. Time-consuming tasks are eliminated. Without the need to fetch a new IP address from the DHCP server, the process of switching from one access point to another can be reduced to the point where the connection change results in no noticeable interruption.