Hollyhou
09-04-2006, 09:42 PM
Currently, I want to implement Quick Roaming of WLAN(802.11 Network)! But I haven't a good idea about it! And I already read some information, please refer to follow message! (http://www.isoc.org/pubs/int/cisco-1-1.html) Who can provide some documents or give your suggestion to me?
Thanks a lot! :p
================================================== ======
IEEE 802.11 Roaming and Mobility
IEEE 802.11 provides for roaming and mobility of 802.11 client devices and allows clients to roam among multiple 802.11 base stations that may be operating on the same or different frequencies (channels). This is achieved through the use of beacon frames, which are used to synchronize 802.11 devices and, in the infrastructure mode, to associate with a base station.
There are two ways to scan for existing 802.11 networks: active and passive scanning. In active scanning mode, the 802.11 device sends out "probe" frames, soliciting "I am here" responses from existing 802.11 devices. In the passive mode, the devices just listen for beacon frames, which are periodically transmitted by the active devices. In addition, the IEEE 802.11 Task Group F is working on the IAPP, which is to provide better and interoperable mobility and roaming mechanisms.
===========================================
Thanks a lot! :p
================================================== ======
IEEE 802.11 Roaming and Mobility
IEEE 802.11 provides for roaming and mobility of 802.11 client devices and allows clients to roam among multiple 802.11 base stations that may be operating on the same or different frequencies (channels). This is achieved through the use of beacon frames, which are used to synchronize 802.11 devices and, in the infrastructure mode, to associate with a base station.
There are two ways to scan for existing 802.11 networks: active and passive scanning. In active scanning mode, the 802.11 device sends out "probe" frames, soliciting "I am here" responses from existing 802.11 devices. In the passive mode, the devices just listen for beacon frames, which are periodically transmitted by the active devices. In addition, the IEEE 802.11 Task Group F is working on the IAPP, which is to provide better and interoperable mobility and roaming mechanisms.
===========================================