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IEEE 802.11r-2008 or fast BSS transition (FT), is an amendment to the IEEE 802.11 standard to permit continuous connectivity aboard wireless devices in motion, with fast and secure client transitions from one Basic Service Set (abbreviated BSS, and also known as a base station or more colloquially, an access point) to another performed in a nearly seamless manner.
It covers the IEEE 802.11k standard about access point information report, the IEEE 802.11v standard that enable exchanging information about state of network, IEEE 802.11u standard about additional information of a Wi-Fi network, IEEE 802.11r about fast transition roaming between different access points, as well as other technologies specified ...
The term "roaming", also known as "e-roaming", is a concept for charging battery electric vehicles (BEVs) at other charging stations. [3] In practice, e-roaming allows EV drivers to achieve greater interoperability by providing access to public charging points from any owner/operator's EV charging network through a common platform and a single ...
They are commonly used today in their 802.11a, 802.11b, 802.11g and 802.11n versions to provide wireless connectivity in the home, office and some commercial establishments. The IEEE 802.11 standard doesn't specify the communications between access points in order to support users roaming from one access point to another and load balancing .
In contrast to fast roaming supported by IEEE 802.11r-2008, no key negotiation or processing is necessary between the access point and a client device when roaming between antennas on a Wi-Fi over Coax DAS, permitting seamless native handoffs.
IEEE 802.11ai is a Wireless LAN standard from IEEE that since June 2017 [1] provides fast initial link setup (FILS) methods that enable a wireless LAN client to achieve a secure link setup within 100ms, designed to improve dense environments. [1] FILS provides fast roaming without 802.11r. [2]
Wireless LAN (WLAN) channels are frequently accessed using IEEE 802.11 protocols. The 802.11 standard provides several radio frequency bands for use in Wi-Fi communications, each divided into a multitude of channels numbered at 5 MHz spacing (except in the 45/60 GHz band, where they are 0.54/1.08/2.16 GHz apart) between the centre frequency of the channel.
IEEE 802.11k and 802.11r are industry standards that enable seamless Basic Service Set (BSS) transitions in the WLAN environment. The 802.11k standard provides information to discover the best available access point. 802.11k is intended to improve the way traffic is distributed within a network.