WLAN Roaming

Wi-Fi Roaming refers to the transition of a wireless client from one access point to another within a continuous wireless network. The transition is generally initiated by the client, for example when the signal quality of the current access point decreases and a more suitable access point becomes available. The objective is to maintain connectivity with minimal interruption as users move through a building or site. Technologies such as IEEE 802.11k, 802.11v and 802.11r can support access point selection and faster transitions. Wi-Fi Roaming is particularly relevant for time-sensitive applications such as VoIP, video conferencing and mobile business applications. Appropriate access point placement, Wi-Fi coverage, channel planning and configuration are important requirements for reliable roaming performance.