The 802.11 standard defines how wireless devices behave when a station (re)associates. Several vendors have developed proprietary inter-AP protocols to facilitate handoff in homogeneous WLANs. To provide guidelines for handoff in multi-vendor environments, the IEEE developed a standard inter-AP specification (IAPP)-- see IEEE 802.11f.
By submitting your personal information, you agree that TechTarget and its partners may contact you regarding relevant content, products and special offers.
More recently, the IEEE addressed security-related handoff delays in this year's 802.11i advanced security specification. 802.11i goes beyond basic roaming by letting stations use cached encryption keys and pre-authenticate with a new AP before losing contact with the previous AP. To learn more, see IEEE 802.11i and the WPA2 specification published by the Wi-Fi Alliance.
Finally, the new IEEE 802.11 task group R is working on fast roaming techniques needed to support latency-sensitive applications like VoIP more effectively. To learn more, see the 802.11 handoff-related presentations on Bernard Aboba's excellent 802.11 resource Web site.
Dig Deeper on Wireless Networking
Have a question for an expert?
Please add a title for your question
Get answers from a TechTarget expert on whatever's puzzling you.