How does 802.11r work

The BSS Max Idle Service helps clients and access points efficiently decide how long to remain associated when no traffic is being transmitted. The device uses this information to preserve device battery life. When you combine Most Wi-Fi network hardware vendors support You need to enable and configure these features on your Wi-Fi router before your network can use them.

Setup varies, so check your Wi-Fi router's manual for details. The lists below show which iOS devices support To use To use adaptive Information about products not manufactured by Apple, or independent websites not controlled or tested by Apple, is provided without recommendation or endorsement. The beacon request frame is sent by an AP to request a client to report the list of beacons heard by the client on all channels. You can enable It extends radio measurements to define mechanisms for wireless network management of stations including BSS transition management.

Opportunistic Key Caching. Fast BSS Transition Radio Resource Management BSS Transition Management Click the Security tab. Slide to Enterprise security level. On selecting a security level, the authentication options applicable to Enterprise network are displayed. Click Next and then click Finish. Under Fast Roaming , select the The AP sends a Neighbor report to the station with a list of the APs in its scan table and information about the channels on which they are operating, thus saving the station from having to perform a full scan.

For this protocol to be effective, the access point must have performed a previous scan and received updated information on neighbors. The access point takes the initiative in roaming and asks the station for its perspective of the network.

The station will inform the access point of the neighbors listed in its scan table, sending the RCPI value or signal strength and channel of the access points it has within range. Using the This helps the station identify the best AP from the list of candidates sent. In a network where APs are able to communicate with each other, this can lead to a very reliable set of APs. Finally, we will look at a case where the Figure 2 : Network scenario in which there are multiple access points and the roaming decision is assisted by the connected access point using In figure 2, the station changes location and once it decides to roam it requests information on neighbors through the This provides it with information about nearby APs and the channels where they are operating.

The client can request a list of candidates through the If the roaming decision is made by the AP, a Beacon request will be sent through the Based on the response, the AP will decide roaming guidance with a list of candidates.

Once the candidates are sent, the station will re-associate with one of the access points on the list.