WLAN roaming

WLAN roaming allows STAs to move within the coverage areas of APs belonging to the same ESS with nonstop service transmission.

The most obvious advantage of WLAN networks is that a STA can move within a WLAN network without physical media restrictions. WLAN roaming allows STAs to move within a WLAN network without service interruption. An ESS includes multiple APs. When a STA moves from an AP to another, WLAN roaming ensures seamless transition of STA services between APs.

WLAN roaming has the following advantages:

- Retains STAs' IP addresses. After roaming, STAs can still access the initially associated WLAN network and retain their services.

- Avoids packet loss or service interruption caused by long-term authentication.

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